Updated on 2025/11/30

写真a

 
角井 宏行
 
Organization
Faculty of Environmental, Life, Natural Science and Technology Associate Professor
Position
Associate Professor
External link

Degree

  • Ph.D ( 2009.3   Chiba University )

Research Interests

  • Arabidopsis thaliana

  • Genome-editing

  • Self-incompatibility

  • Pollen Biology

  • Plant Molecular Biology

  • Pear

  • Apple

  • Petunia

  • Cryptomeria japonica

  • Wheat

Research History

  • Okayama University   Graduate School of Environmental, Life, Natural Science and Technology   Associate Professor

    2025.10

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  • The University of Tokyo   Institute for Sustainable Agro-ecosystem Services   Assistant Professor

    2022.12 - 2025.10

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  • Kyoto University   Graduate School of Agriculture, Laboratory of Plant Breeding

    2022.4 - 2022.11

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  • Niigata University   自然科学系   Specially Appointed Assistant Professor

    2019.12 - 2022.3

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    Country:Japan

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  • Yokohama City University   生命ナノシステム科学研究科   Specially Appointed Assistant Professor   Guest researcher in Zurich University

    2016.9 - 2019.11

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  • University of Zurich   Post-doc researcher

    2015.4 - 2016.8

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  • University of Zurich   JSPS Research Fellowships for Young Scientists (Abroad)

    2013.4 - 2015.3

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  • Nagoya University   JSPS Research Fellowships for Young Scientists (PostDoc)

    2010.4 - 2013.3

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  • Chiba University   JSPS Research Fellowships for Young Scientists (DC2)

    2008.4 - 2010.3

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Professional Memberships

  • Japanese Society of Forest Genetics and Tree Breeding

    2021.10

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  • The Molecular Biology Society of Japan

    2021.7

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  • The Japanese Forest Society

    2020.11 - 2022.12

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  • THE BOTANICAL SOCIETY OF JAPAN

    2011

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  • IASPRR (International Association of Sexual Plant Reproduction Research)

    2010.4

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  • JAPANESE SOCIETY OF BREEDING

    2006

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Committee Memberships

  • Frontiers in Plant Science   Review Editor  

    2021.6   

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    Committee type:Academic society

    https://loop.frontiersin.org/people/1072031/overview

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  •   Workshop organizing committee  

    2017.10 - 2018.2   

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    Committee type:Other

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  • Japanese Society of Breeding   Young researchers association/Secretary-General  

    2009 - 2012   

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    Committee type:Academic society

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Papers

  • The latest on study and research abroad during mid- and post-COVID-19 periods

    Hiroyuki Kakui, Mai Minamikawa, Moeko Okada, Shun Sakuma, Mashiro Okada, Kanae Masuda, Takao Komatsuda

    Breeding Research   26 ( 1 )   85 - 90   2024.6

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Japanese Society of Breeding  

    DOI: 10.1270/jsbbr.26.w06

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  • Development and application of a KASP marker for marker-assisted selection against the male-sterile gene MALE STERILITY 4 (MS4) in Japanese cedar (Cryptomeria japonica D. Don)

    Masahiro Watanabe, Saneyoshi Ueno, Yoichi Hasegawa, Satoko Hirayama, Junji Iwai, Hiroyuki Kakui, Yoshinari Moriguchi

    New Forests   55 ( 5 )   1349 - 1362   2024.3

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s11056-024-10036-y

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    Other Link: https://link.springer.com/article/10.1007/s11056-024-10036-y/fulltext.html

  • Dominance in self-compatibility between subgenomes of allopolyploid Arabidopsis kamchatica shown by transgenic restoration of self-incompatibility Reviewed International coauthorship

    Chow-Lih Yew, Takashi Tsuchimatsu, Rie Shimizu-Inatsugi, Shinsuke Yasuda, Masaomi Hatakeyama, Hiroyuki Kakui, Takuma Ohta, Keita Suwabe, Masao Watanabe, Seiji Takayama, Kentaro K. Shimizu

    Nature Communications   14   7618   2023.11

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41467-023-43275-2

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  • Molecular cytological identification of the gametocidal chromosome discovered by Endo and Tsunewaki (1975) in an alloplasmic wheat

    Shuhei Nasuda, Kazuki Murata, Hiroyuki Kakui, Koichi Yamamori, Takanori Yoshikawa

    CYTOLOGIA   88 ( 3 )   167 - 168   2023.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:International Society of Cytology  

    DOI: 10.1508/cytologia.88.167

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  • A single-nucleotide substitution of CjTKPR1 determines pollen production in the gymnosperm plant Cryptomeria japonica Reviewed

    Hiroyuki Kakui, Tokuko Ujino-Ihara, Yoichi Hasegawa, Eriko Tsurisaki, Norihiro Futamura, Junji Iwai, Yuumi Higuchi, Takeshi Fujino, Yutaka Suzuki, Masahiro Kasahara, Katsushi Yamaguchi, Shuji Shigenobu, Masahiro Otani, Masaru Nakano, Masaaki Nameta, Shinsuke Shibata, Saneyoshi Ueno, Yoshinari Moriguchi

    PNAS Nexus   2 ( 8 )   2023.8

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Oxford University Press (OUP)  

    Abstract

    Pollinosis, also known as pollen allergy or hay fever, is a global problem caused by pollen produced by various plant species. The wind-pollinated Japanese cedar (Cryptomeria japonica) is the largest contributor to severe pollinosis in Japan, where increasing proportions of people have been affected in recent decades. The MALE STERILITY 4 (MS4) locus of Japanese cedar controls pollen production, and its homozygous mutants (ms4/ms4) show abnormal pollen development after the tetrad stage and produce no mature pollen. In this study, we narrowed down the MS4 locus by fine mapping in Japanese cedar and found TETRAKETIDE α-PYRONE REDUCTASE 1 (TKPR1) gene in this region. Transformation experiments using Arabidopsis thaliana showed that single-nucleotide substitution (“T” to “C” at 244-nt position) of CjTKPR1 determines pollen production. Broad conservation of TKPR1 beyond plant division could lead to the creation of pollen-free plants not only for Japanese cedar but also for broader plant species.

    DOI: 10.1093/pnasnexus/pgad236

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  • Localization of TWISTED NEEDLES Locus on Linkage Map of Japanese Cedar (Cryptomeria japonica D. Don) Reviewed International journal

    Yoshinari Moriguchi, Ryunosuke Saito, Saneyoshi Ueno, Yoichi Hasegawa, Hiroyuki Kakui, Asako Matsumoto

    forests   13 ( 1524 )   1524 - 1524   2022.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    Sugi (Cryptomeria japonica D. Don) is an important forestry species in Japan. C. japonica ‘Spiralis’ is a mutant with twisted needles. The mutant is called Yore-sugi in Japan and is known as ‘Rasen’ in other countries. The twisted trait is regulated by a dominant gene called TWISTED NEEDLES, and it can be identified by observing the needles within 1 to 2 months after germination. The TWISTED NEEDLES gene may be useful for improving the efficiency of genome editing technology in C. japonica. In this study, we attempted to identify the linkage group of the TWISTED NEEDLES locus and investigate markers that sandwich this locus using the mapping family. First, we identified the linkage group containing the TWISTED NEEDLES locus based on the distortion from the expected segregation ratio using 32 mutant individuals of the mapping family. The segregation distortion showed that the TWISTED NEEDLES locus was located on the 11th linkage group (LG11). Next, a linkage map of LG11 was constructed based on genotype data from the single-nucleotide polymorphism (SNP) markers and double digested restriction site-associated DNA sequencing (ddRAD-seq) using 123 individuals of the MMY-1 family. On this map, six markers were located at the same position as the TWISTED NEEDLES locus. To investigate markers sandwiching the TWISTED NEEDLES locus, a partial linkage map around the TWISTED NEEDLES locus was constructed using 643 individuals of the MMY-1 family. The TWISTED NEEDLES locus was located in the 0.6 cM region between gSNP01822 and the other five markers (Contig_4705-179, Contig_4518-93, Contig_4398-118, gSNP04056, and Contig_4970-113).

    DOI: 10.3390/f13091524

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  • Pollen number studies in Japanese cedar

    Hiroyuki Kakui, Eriko Tsurisaki, Rei Shibata, Hidenori Sassa, Yoshinari Moriguchi

    11 ( 2 )   97 - 103   2022.5

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.32135/fgtb.11.2_97

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  • PRIMA: a rapid and cost-effective genotyping method with single-nucleotide resolution Invited International coauthorship

    Hiroyuki Kakui, Misako Yamazaki, Kentaro K Shimizu

    Experimental Medicine   40 ( 4 )   601 - 608   2022.2

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    Authorship:Lead author   Language:Japanese  

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  • Pollen number and ribosome gene expression altered in a genome-editing mutant of REDUCED POLLEN NUMBER1 gene Reviewed International coauthorship International journal

    Hiroyuki Kakui, Takashi Tsuchimatsu, Misako Yamazaki, Masaomi Hatakeyama, Kentaro K Shimizu

    Frontiers in Plant Science   12 ( 768584 )   2022.1

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Frontiers Media SA  

    The number of pollen grains varies within and between species. However, little is known about the molecular basis of this quantitative trait, in contrast with the many studies available on cell differentiation in the stamen. Recently, the first gene responsible for pollen number variation, <italic>REDUCED POLLEN NUMBER1</italic> (<italic>RDP1</italic>), was isolated by genome-wide association studies of <italic>Arabidopsis thaliana</italic> and exhibited the signature of natural selection. This gene encodes a homolog of yeast Mrt4 (mRNA turnover4), which is an assembly factor of the large ribosomal subunit. However, no further data were available to link ribosome function to pollen development. Here, we characterized the <italic>RDP1</italic> gene using the standard <italic>A. thaliana</italic> accession Col-0. The frameshift mutant, <italic>rdp1-3</italic> generated by CRISPR/Cas9 revealed the pleiotropic effect of <italic>RDP1</italic> in flowering, thus demonstrating that this gene is required for a broad range of processes other than pollen development. We found that the natural Col-0 allele conferred a reduced pollen number against the Bor-4 allele, as assessed using the quantitative complementation test, which is more sensitive than transgenic experiments. Together with a historical recombination event in Col-0, which was identified by sequence alignment, these results suggest that the coding sequence of <italic>RDP1</italic> is the candidate region responsible for the natural phenotypic variation. To elucidate the biological processes in which <italic>RDP1</italic> is involved, we conducted a transcriptome analysis. We found that genes responsible for ribosomal large subunit assembly/biogenesis were enriched among the differentially regulated genes, which supported the hypothesis that ribosome biogenesis is disturbed in the <italic>rdp1-3</italic> mutant. Among the pollen-development genes, three key genes encoding basic helix-loop-helix (bHLH) transcription factors (<italic>ABORTED MICROSPORES</italic> (<italic>AMS</italic>), <italic>bHLH010</italic>, and <italic>bHLH089</italic>), as well as direct downstream genes of <italic>AMS</italic>, were downregulated in the <italic>rdp1-3</italic> mutant. In summary, our results suggest a specialized function of ribosomes in pollen development through <italic>RDP1</italic>, which harbors natural variants under selection.

    DOI: 10.3389/fpls.2021.768584

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  • PRIMA: a rapid and cost-effective genotyping method to detect single-nucleotide differences using probe-induced heteroduplexes Reviewed International coauthorship International journal

    Hiroyuki Kakui, Misako Yamazaki, Kentaro K. Shimizu

    Scientific Reports   11 ( 20741 )   1 - 10   2021.10

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    <title>Abstract</title>Targeted mutagenesis by programmable site-specific nucleases like CRISPR typically produce 1-base pair (bp) insertion or deletion (indel) mutations. Although several methods have been developed to detect such 1-bp indels, each method has pros and cons in terms of cost and/or resolution. Heteroduplex mobility assay (HMA) is a traditional technique detecting small base pair differences but it has a limited resolution of mutation size and the band patterns are often complex. Here, we developed a new method called PRIMA (<underline>Pr</underline>obe-<underline>I</underline>nduced H<underline>MA</underline>) using a short single-stranded DNA molecule as a probe in HMA. By utilizing a 40-mer probe containing a 5-nucleotide deletion, we assessed the mobility of a heteroduplex with a target DNA fragment from a plant, bacterium, and human. This method allowed us to detect a 1-bp indel mutation consistently. We also showed that SNPs can be detected using PRIMA. PRIMA provides a rapid and cost-effective solution for the genotyping.

    DOI: 10.1038/s41598-021-99641-x

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    Other Link: https://www.nature.com/articles/s41598-021-99641-x

  • Factors Affecting the Number of Pollen Grains per Male Strobilus in Japanese Cedar (Cryptomeria japonica) Invited Reviewed

    Hiroyuki Kakui, Eriko Tsurisaki, Rei Shibata, Yoshinari Moriguchi

    Plants   10 ( 5 )   856   2021.4

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    Japanese cedar (Cryptomeria japonica) is the most important timber species in Japan; however, its pollen is the primary cause of pollinosis in Japan. The total number of pollen grains produced by a single tree is determined by the number of male strobili (male flowers) and the number of pollen grains per male strobilus. While the number of male strobili is a visible and well-investigated trait, little is known about the number of pollen grains per male strobilus. We hypothesized that genetic and environmental factors affect the pollen number per male strobilus and explored the factors that affect pollen production and genetic variation among clones. We counted pollen numbers of 523 male strobili from 26 clones using a cell counter method that we recently developed. Piecewise Structural Equation Modeling (pSEM) revealed that the pollen number is mostly affected by genetic variation, male strobilus weight, and pollen size. Although we collected samples from locations with different environmental conditions, statistical modeling succeeded in predicting pollen numbers for different clones sampled from branches facing different directions. Comparison of predicted pollen numbers revealed that they varied &gt;3-fold among the 26 clones. The determination of the factors affecting pollen number and a precise evaluation of genetic variation will contribute to breeding strategies to counter pollinosis. Furthermore, the combination of our efficient counting method and statistical modeling will provide a powerful tool not only for Japanese cedar but also for other plant species.

    DOI: 10.3390/plants10050856

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  • Gene controlling pollen number -Method to identify quantitative gene using genome editing- Invited

    Hiroyuki Kakui, Takashi Tsuchimatsu, Misako Yamazaki, Kentaro K Shimizu

    Bioscience & Industry   79 ( 1 )   32 - 33   2021.1

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    J-GLOBAL

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  • An improved pollen number counting method using a cell counter and mesh columns Reviewed

    Hiroyuki Kakui, Eriko Tsurisaki, Hidenori Sassa, Yoshinari Moriguchi

    Plant Methods   16 ( 124 )   1 - 13   2020.12

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s13007-020-00668-4

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  • Gene controlling the number of pollen grains of Arabidopsis thaliana -The key to balance the pollen number and growth- Invited

    2020.10

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  • Adaptive reduction of male gamete number in the selfing plant Arabidopsis thaliana. Reviewed International journal

    Takashi Tsuchimatsu, Hiroyuki Kakui, Misako Yamazaki, Cindy Marona, Hiroki Tsutsui, Afif Hedhly, Dazhe Meng, Yutaka Sato, Thomas Städler, Ueli Grossniklaus, Masahiro M Kanaoka, Michael Lenhard, Magnus Nordborg, Kentaro K Shimizu

    Nature Communications   11 ( 1 )   2885   2020.6

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    The number of male gametes is critical for reproductive success and varies between and within species. The evolutionary reduction of the number of pollen grains encompassing the male gametes is widespread in selfing plants. Here, we employ genome-wide association study (GWAS) to identify underlying loci and to assess the molecular signatures of selection on pollen number-associated loci in the predominantly selfing plant Arabidopsis thaliana. Regions of strong association with pollen number are enriched for signatures of selection, indicating polygenic selection. We isolate the gene REDUCED POLLEN NUMBER1 (RDP1) at the locus with the strongest association. We validate its effect using a quantitative complementation test with CRISPR/Cas9-generated null mutants in nonstandard wild accessions. In contrast to pleiotropic null mutants, only pollen numbers are significantly affected by natural allelic variants. These data support theoretical predictions that reduced investment in male gametes is advantageous in predominantly selfing species.

    DOI: 10.1038/s41467-020-16679-7

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  • Pollen grain counting using a cell counter

    Hiroyuki Kakui, Misako Yamazaki, Naoto-Benjamin Hamaya, Kentaro K. Shimizu

    Methods in Molecular Biology   2160   1 - 11   2020

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    Language:English   Publishing type:Part of collection (book)   Publisher:Humana Press Inc.  

    DOI: 10.1007/978-1-0716-0672-8_1

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  • Agrobacterium-mediated floral dip transformation of the model polyploid species Arabidopsis kamchatica Reviewed

    Chow-Lih Yew, Hiroyuki Kakui, Kentaro K. Shimizu

    Journal of Plant Research   131 ( 2 )   349 - 358   2018.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Tokyo  

    DOI: 10.1007/s10265-017-0982-9

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  • 次世代の遺伝学と育種 Invited

    高橋有, 山内卓樹, 角井宏行, 寺内良平, 大柳一, 小宮怜奈, 宮武宏治, 内藤健

    育種学研究   15 ( 3 )   115 - 121   2013.9

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    Language:Japanese   Publishing type:Research paper (conference, symposium, etc.)   Publisher:Japanese Society of Breeding  

    DOI: 10.1270/jsbbr.15.115

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  • Identification of an S-RNase binding protein1 (SBP1) homolog of apple (Malus×domestica) Reviewed

    Mai F. Minamikawa, Daisuke Fujii, Hiroyuki Kakui, Nobuhiro Kotoda, Hidenori Sassa

    Plant Biotechnology   30 ( 2 )   119 - 123   2013

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    DOI: 10.5511/plantbiotechnology.13.0109a

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  • Interhaplotypic heterogeneity and heterochromatic features may contribute to recombination suppression at the S locus in apple (Malusdomestica) Reviewed

    Sanhong Wang, Hiroyuki Kakui, Shinji Kikuchi, Takato Koba, Hidenori Sassa

    Journal of Experimental Botany   63 ( 13 )   4983 - 4990   2012.8

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    DOI: 10.1093/jxb/ers176

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  • Structural Features of the S Locus of Apple Reviewed

    Hidenori Sassa, Sanhong Wang, Mai Minamikawa, Hiroyuki Kakui, Shinji Kikuchi, Takato Koba

    Acta Horticulturae   967   89 - 94   2012

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    Web of Science

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  • Sequence divergence and loss-of-function phenotypes of S locus F-box brothers genes are consistent with non-self recognition by multiple pollen determinants in self-incompatibility of Japanese pear (Pyrus pyrifolia) Reviewed

    Hiroyuki Kakui, Masaki Kato, Koichiro Ushijima, Miyoko Kitaguchi, Shu Kato, Hidenori Sassa

    The Plant Journal   68 ( 6 )   1028 - 1038   2011.12

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    DOI: 10.1111/j.1365-313X.2011.04752.x

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  • Development of SCAR and CAPS markers linked to a recessive male sterility gene in lettuce (Lactuca sativa L.) Reviewed

    Mai Hayashi, Aya Ujiie, Hiroaki Serizawa, Hidenori Sassa, Hiroyuki Kakui, Tetsuya Oda, Takato Koba

    Euphytica   180 ( 3 )   429 - 436   2011.8

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    DOI: 10.1007/s10681-011-0417-y

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  • Apple S locus region represents a large cluster of related, polymorphic and pollen-specific F-box genes Reviewed

    Mai Minamikawa, Hiroyuki Kakui, Sanhong Wang, Nobuhiro Kotoda, Shinji Kikuchi, Takato Koba, Hidenori Sassa

    Plant Molecular Biology   74 ( 1-2 )   143 - 154   2010.9

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    DOI: 10.1007/s11103-010-9662-z

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  • Pollen-expressed F-box gene family and mechanism of S-RNase-based gametophytic self-incompatibility (GSI) in Rosaceae Invited Reviewed

    Hidenori Sassa, Hiroyuki Kakui, Mai Minamikawa

    Sexual Plant Reproduction   23 ( 1 )   39 - 43   2010.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00497-009-0111-6

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  • Determination of partial genomic sequences and development of a CAPS system of the S-RNase gene for the identification of 22 S haplotypes of apple (Malus x domestica Borkh.) Reviewed

    Hoytaek Kim, Hiroyuki Kakui, Nobuhiro Kotoda, Yutaka Hirata, Takato Koba, Hidenori Sassa

    MOLECULAR BREEDING   23 ( 3 )   463 - 472   2009.4

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    DOI: 10.1007/s11032-008-9249-4

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  • Polymorphism of SFBB-gamma and its use for S genotyping in Japanese pear (Pyrus pyrifolia) Reviewed

    Hiroyuki Kakui, Takeshi Tsuzuki, Takato Koba, Hidenori Sassa

    Plant Cell Reports   26 ( 9 )   1619 - 1625   2007.9

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    DOI: 10.1007/s00299-007-0386-8

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  • Cloning of a new S-RNase and development of a PCR-RFLP system for the determination of the S-genotypes of Japanese pear Reviewed

    Hoytaek Kim, Hiroyuki Kakui, Takato Koba, Yutaka Hirata, Hidenori Sassa

    Breeding Science   57 ( 2 )   159 - 164   2007.6

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    DOI: 10.1270/jsbbs.57.159

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  • S locus F-Box brothers: Multiple and pollen-specific F-box genes with S haplotype-specific polymorphisms in apple and Japanese pear Reviewed

    Hidenori Sassa, Hiroyuki Kakui, Mayu Miyamoto, Yusuke Suzuki, Toshio Hanada, Koichiro Ushijima, Makoto Kusaba, Hisashi Hirano, Takato Koba

    Genetics   175 ( 4 )   1869 - 1881   2007.4

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    DOI: 10.1534/genetics.106.068858

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Books

Presentations

  • An improved pollen number counting method using a cell counter and mesh columns

    Hiroyuki Kakui, Eriko Tsurisaki, Hidenori Sassa, Yoshinari Moriguchi

    The 138th Meeting of the Japanese Society of Breeding  2020.10.10 

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    Event date: 2020.10.10 - 2020.10.11

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • ゲノムワイド関連解析から探るシロイヌナズナにおける花粉数の進化

    土松隆志, 土松隆志, 土松隆志, 角井宏行, 山崎美紗子, 金岡雅浩, GROSSNIKLAUS Ueli, HEDHLY Afif, MARONA Cindy, MENG Dazhe, 佐藤豊, STADLER Thomas, 筒井大貴, 筒井大貴, LENHARD Michael, NORDBORG Magnus, 清水健太郎

    日本遺伝学会大会プログラム・予稿集  2016.8.22 

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    Event date: 2016.8.22

    Language:Japanese  

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  • GWASから量的形質の進化を探る:シロイヌナズナの生殖形質を例に

    土松隆志, 土松隆志, 土松隆志, 角井宏行, 山崎美紗子, MARONA Cindy, MENG Dazhe, 筒井大貴, 金岡雅浩, STADLER Thomas, LENHARD Michael, NORDBORG Magnus, 清水健太郎

    日本応用動物昆虫学会大会講演要旨  2016.3.10 

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    Event date: 2016.3.10

    Language:Japanese  

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  • GWASによる花粉数を制御する遺伝子の同定と解析

    角井宏行, 土松隆志, 土松隆志, 山崎美紗子, MARONA Cindy, MENG Dazhe, MENG Dazhe, 金岡雅浩, STADLER Thomas, LENHARD Michael, NORDBORG Magnus, NORDBORG Magnus, 清水健太郎

    日本植物学会大会研究発表記録  2015.9.1 

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    Event date: 2015.9.1

    Language:Japanese  

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  • ゲノムワイド関連解析から探る量的形質の進化:シロイヌナズナを例に

    土松隆志, 土松隆志, 土松隆志, 角井宏行, 山崎美紗子, MARONA Cindy, MENG Dazhe, 金岡雅浩, STADLER Thomas, LENHARD Michael, NORDBORG Magnus, 清水健太郎

    日本進化学会大会プログラム・講演要旨集(Web)  2015.8.20 

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    Event date: 2015.8.20

    Language:Japanese  

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  • Research on genes controlling pollen “number” and “viability” in plants Invited

    Hiroyuki Kakui

    2025.11.29 

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    Presentation type:Oral presentation (invited, special)  

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  • Controlling Pollen Number for Agriculture Invited

    Hiroyuki Kakui

    2025.10.24 

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    Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • Analysis of the wheat Gc2 gene using Arabidopsis thaliana

    The 19th Triticeae Meeting Japan  2024.12.21 

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  • DNAの1塩基差を判別するPRIMA法の開発と無花粉スギ原因遺伝子の特定 Invited

    角井宏行

    第120回 日本食品衛生学会 教育講演  2024.11.7 

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  • Single-pollen RNA-Seq analysis of male gametophytes with the induced chromosome breakage by a gametocidal gene

    Koichi Yamamori, Kazuki Murata, Hiroyuki Kakui, Takanori Yoshikawa, Shuhei Nasuda

    3rd International Wheat Congress  2024.9.25 

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  • Live cell imaging of pollen mitosis in wheat to reveal chromosome breakage patterns induced by gametocidal genes

    The 146th Meeting of the Japanese Society of Breeding  2024.9.19 

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  • 埼玉工業大学 先端科学研究所 産学官交流センター講演会 Invited

    角井宏行

    2024.8.23 

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  • 花粉の数を決める遺伝子の探索と DNA1塩基差検出法の開発 Invited

    角井宏行

    東京農工大学セミナー  2024.8.20 

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  • 花粉数を制御して社会貢献を目指す Invited

    Hiroyuki Kakui

    2024.3.8 

  • 君たちはスギ花粉とどう生きるか〜無花粉スギ原因遺伝子を特定して花粉症フリーな社会へ〜 Invited

    角井宏行

    ORIENT 新時代の鼻科学を考える  2024.2.17 

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    File: 2024年2月16日ORIENT_案内状.pdf

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  • DNAの1塩基差を判別できるPRIMA法の開発 Invited

    2024.1.25 

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    File: flyer_240125_ゲノミクスWebinar.pdf

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  • Did the domestication change the pollen number in wheat? International coauthorship

    Hiroyuki Kakui, Naoto-Benjamin Hamaya, Moeko Okada, Katharina Jung, Jilu Nie, Thomas Wicker, Beat Keller, Shuhei Nasuda, Kentaro K. Shimizu

    The 18th Triticeae Meeting of Japan  2023.12.23 

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  • Single pollen RNA-seq analysis of the male gametophyte with induced chromosome breakage by a gametocidal gene in wheat

    Koichi Yamamori, Kazuki Murata, Hiroyuki Kakui, Takanori Yoshikawa, Shuhei Nasuda

    The 18th Triticeae Meeting of Japan  2023.12.23 

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  • Pollen number studies:from basic to applied research

    Hiroyuki Kakui

    KEPLR kick-off meeting Zurich  2023.11.22 

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    File: 20231120 KEPLRposter 2_CompressPdf.pdf

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  • Unravelling the genetic architecture of male reproductive traits in Asian bread wheat (Triticum aestivum L.)

    Naoto-Benjamin Hamaya, Hiroyuki Kakui, Moeko Okada, Katharina Jung, Jilu Nie, Thomas Wicker, Beat Keller, Shuhei Nasuda, Kentaro K. Shimizu

    KEPLR kick-off meeting Zurich  2023.11.21 

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  • A high-throughput phenotyping by UAVs of a wheat NAM population and exploration of effective traits for predicting yield components

    Shunsuke Yoshioka, Ken Kuroki, Miyuki Nitta, Jilu Nie, Masanori Ishii, Hiroyuki Kakui, Moeko Okada, Shotaro Takenaka, Kentaro K. Shimizu, Hiroyoshi Iwata, Wei Guo, Shuhei Nasuda

    KEPLR kick-off meeting Zurich  2023.11.21 

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  • Genome-wide association study for detection of the genes controlling pollen number in polyploid wheat

    Haruki Kojima, Hiroyuki Kakui, Takanori Yoshikawa, Zhuo Su, Jilu Nie, Ken Kuroki, Wei Guo, Shuhei Nasuda

    KEPLR kick-off meeting Zurich  2023.11.21 

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  • Single-cell RNA-seq analysis of the male gametophyte with induced chromosome breakage by a gametocidal gene in wheat

    Koichi Yamamori, Kazuki Murata, Hiroyuki Kakui, Takanori Yoshikawa, Shuhei Nasuda

    KEPLR kick-off meeting Zurich  2023.11.21 

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  • Unravelling the genetic architecture of male reproductive traits in Asian bread wheat

    Symposium University of Tokyo – ETH Zurich – University of Zurich  2023.10.15 

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  • A high-throughput phenotyping of the hexaploid wheat NAM population during tillering stage by UAVs and their correlation with yield-related traits

    The 144th Meeting of the Japanese Society of Breeding  2023.9.17 

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  • Evolution of Male Gamete Number in Bread Wheat (Triticum aestivum L.)

    Naoto-Benjamin Hamaya, Hiroyuki Kakui, Jilu Nie, Moeko Okada, Thomas Wicker, Beat Keller, Shuhei Nasuda, Kentaro K. Shimizu

    International Conference Evolution in Action  2023.6.13 

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  • A High-throughput Phenotyping of Early Growth Patterns of a Hexaploid Wheat NAM Population by a UAV

    Shunsuke Yoshioka, Ken Kuroki, Miyuki Nitta, Jilu Nie, Masanori Ishii, Hiroyuki Kakui, Moeko Okada, Shotaro Takenaka, Kentaro K. Shimizu, Hiroyoshi Iwata, Wei Guo, Shuei Nasuda

    International Conference Evolution in Action  2023.6.12 

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  • PRIMA: PRobe-Induced heteroduplex Mobility Assay, a reliable method to detect single-nucleotide variations time- and cost-effectively

    Misako YAMAZAKI, Hiroyuki Kakui, Kentaro K. Shimizu

    The 33rd International Conference on Arabidopsis Research (ICAR2023)  2023.6.7 

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  • スギゲノム参照配列を用いた雄性不稔遺伝子 (MS3)候補遺伝子の同定

    上野真義, 長谷川陽一, 鶴田燃海, 伊原徳子, 宮澤真一, 角井宏行, 岩井淳治, 平山聡子, 藤野 健, 山口勝司, 鈴木 穣, 豊田 敦, 重信秀治, 笠原雅弘, 森口喜成

    第134回日本森林学会大会  2023.3.25 

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  • Live-cell imaging revealed function of the Gc2 gametocidal system in wheat

    Hiroyuki Kakui, Kazuki Murata, Tomoki Uchino, Yoshikatsu Sato, Yoko Mizuta, Shuhei Nasuda

    The 143rd Meeting of the Japanese Society of Breeding  2023.3.17 

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  • PRIMA: a rapid and cost-effective genotyping method with single-nucleotide resolution

    Hiroyuki Kakui

    Seminar at University of Tokyo  2023.3.7 

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  • Unravelling the genetic architecture of male reproductive traits in Asian bread wheat (Triticum aestivum L.)

    Naoto-Benjamin HamayaHiroyuki KakuiJilu NieMoeko, OkadaThomas WickerBeat KellerShuhei NasudaKentaro, K. Shimizu

    Plant & Animal Genome Conference / PAG 30  2023.1.13 

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  • Analysis of pollen-related traits in tetraploid and hexaploid wheat

    Haruki Kojima, Hiroyuki Kakui, Takanori Yoshikawa, Su Zhuo, Nie Jilu, Ken Kuroki, Wei Guo, Shuhei Nasuda

    The 17th Triticeae Meeting of Japan  2022.12.17 

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  • Analysis of Gc genes in wheat Invited

    Hiroyuki Kakui, Kazuki Murata, Yoshikatsu Sato, Yoko Mizuta, Shuhei Nasuda

    The 17th Triticeae Meeting of Japan  2022.12.17 

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  • Identification and analysis of candidate genes regulating pollen number in A. thaliana

    Naoto-Benjamin Hamaya, Hiroyuki Kakui, Afif Hedhly, Ana Marcela Florez-Rueda, Masaomi Hatakeyama, Misako Yamazaki, Ueli Grossniklaus, Kentaro K. Shimizu

    Symposium of the Zurich-Basel Plant Science Center  2022.12.7 

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  • Single-nucleic acid substitution determines the male-sterility in Japanese cedar

    Hiroyuki Kakui, Tokuko Ujino-Ihara, Yoichi Hasegawa, Eriko Tsurisaki, Norihiro Futamura, Junji Iwai, Yuumi Higuchi, Takeshi Fujino, Yutaka Suzuki, Masahiro Kasahara, Katsushi Yamaguchi, Shuji Shigenobu, Masahiro Otani, Masaru Nakano, Saneyoshi Ueno, Yoshinari Moriguchi

    The 45th Annual Meeting of the Molecular Biology Society of Japan  2022.11.30 

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  • Pollen counting with "Ju-o-Mujin" plant species reveal "Ju-o-Mujin" phenomena

    Hiroyuki Kakui

    The 18th Kyoto University Plant Researchers' Community "Ju-o-Mujin" Workshop  2022.11.22 

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  • Seminar at Tottori University Invited

    Hiroyuki Kakui

    2022.11.7 

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  • Complementation tests and transcriptome analysis of REDUCED POLLEN NUMBER1 in Arabidopsis thaliana

    Hiroyuki Kakui, Takashi Tsuchimatsu, Misako Yamazaki, Kentaro K Shimizu

    The 142nd Meeting of the Japanese Society of Breeding  2022.9.24 

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  • Phenotyping of pollen-related traits and genome-wide association study in the tetraploid wheat core collection

    Kojima Haruki, Hiroyuki Kakui, Takanori Yoshikawa, Su Zhuo

    The 142nd Meeting of the Japanese Society of Breeding  2022.9.24 

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  • 裸子植物で巨大ゲノムをもつスギにおける,無花粉スギMS4原因遺伝子の同定

    Hiroyuki Kakui

    86th Annual Meeting of the Botanical Society of Japan  2022.9.19 

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  • DNAの1塩基差を判別できるPRIMA法の開発と、 花粉数を決定する遺伝子についての研究 Invited

    Hiroyuki Kakui

    第8回生殖若手の会  2022.9.10 

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  • Pollen study, development of PRIMA, and observation of wheat pollen.

    Hiroyuki Kakui

    2022.7.30 

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    Venue:University of Tokyo  

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  • Single-nucleic acid difference controls the pollen production in Japanese cedar, the largest source for severe pollinosis in Japan International conference

    Hiroyuki Kakui, Tokuko Ujino-Ihara, Yoichi Hasegawa, Eriko Tsurisaki, Norihiro Futamura, Junji Iwai, Yuumi Higuchi, Takeshi Fujino, Yutaka Suzuki, Masahiro Kasahara, Katsushi Yamaguchi, Shuji Shigenobu, Masahiro Otani, Masaru Nakano, Saneyoshi Ueno, Yoshinari Moriguchi

    2022.6.24 

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  • Identification and analysis of candidate genes regulating pollen number in A. thaliana International coauthorship International conference

    Naoto-Benjamin Hamaya, Hiroyuki Kakui, Afif Hedhly, Ana Marcela Florez-Rueda, Masaomi Hatakeyama, Misako Yamazaki, Ueli Grossniklaus, Kentaro K. Shimizu

    26th ICSPR  2022.6.23 

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  • A novel non-S-specific self-incompatibility factor of Petunia International conference

    Hidenori Sassa, Hiroki Azuma, Miwako Shimizu, Mana Komori, Daiki Horigome, Hiroyuki Kakui, Mai F. Minamikawa, Shinji Kikuchi, Takato Koba

    26th ICSPR  2022.6.23 

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  • Pollen number is regulated by REDUCED POLLEN NUMBER1 encoding ribosome assembly factor and is characterized by an enriched selection signal among traits related to selfing syndrome in Arabidopsis thaliana Invited International coauthorship International conference

    Hiroyuki Kakui, Takashi Tsuchimatsu, Misako Yamazaki, Masaomi Hatakeyama, Lucas Mohn, Thomas Städler, Michael Lenhard, Magnus Nordborg, Kentaro K Shimizu

    26th ICSPR  2022.6.22 

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  • Study of pollen number with high-throughput phenotyping and genotyping method Invited

    Hiroyuki Kakui

    Seminar at Kobe University  2022.6.10 

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  • 新規フェノタイピング・ジェノタイピング手法の開発と植物種を超えた花粉数制御への挑戦

    Seminar at the University of Tokyo  2022.6.3 

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  • Cell counter and PRIMA reveal pollen mysteries. Invited

    Hiroyuki Kakui

    Seminar at Kihara Institute for Biological Research, Yokohama City University  2022.4.8 

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  • Functional analysis revealed causal gene of MS4 in Japanese cedar Invited

    Hiroyuki Kakui, Tokuko Ujino-Ihara, Yoichi Hasegawa, Eriko Tsurisaki, Norihiro Futamura, Junji Iwai, Yuumi Higuchi, Takeshi Fujino, Yutaka Suzuki, Masahiro Kasahara, Katsushi Yamaguchi, Shuji Shigenobu, Masahiro Otani, Masaru Nakano, Saneyoshi Ueno, Yoshinari Moriguchi

    The 133rd Annual Meeting of Japanese Forest Society  2022.3.28 

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  • Identification of MALE STERILITY 4 gene in Japanese cedar

    Hiroyuki Kakui, Tokuko Ujino-Ihara, Yoichi Hasegawa, Eriko Tsurisaki, Norihiro Futamura, Junji Iwai, Yuumi Higuchi, Takeshi Fujino, Yutaka Suzuki, Masahiro Kasahara, Katsushi Yamaguchi, Shuji Shigenobu, Masahiro Otani, Masaru Nakano, Saneyoshi Ueno, Yoshinari Moriguchi

    The 141st Meeting of the Japanese Society of Breeding  2022.3.21 

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    Venue:Online  

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  • PRIMA: a simple and rapid genotyping method to detect single-nucleotide differences by probe-induced heteroduplex mobility assay

    Hiroyuki KakuiMisako, YamazakiKentaro K Shimizu

    The 44th Annual Meeting of the Molecular Biology Society of Japan  2021.12.2 

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    File: Untitled_1203.pdf

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  • 新規ジェノタイピング・フェノタイピング手法が切り拓く花粉数研究 Invited

    角井宏行

    千葉大学セミナー  2021.11.30 

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  • 電気泳動でDNAの1塩基差を迅速・簡便・安価に判別できるPRIMA法の開発 International coauthorship

    角井宏行, 山﨑美紗子, 清水健太郎

    北陸植物学会 2021年度大会  2021.10.30 

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  • PRIMA: a rapid and cost-effective genotyping method to detect single-nucleotide differences of DNA using probe-induced heteroduplexes

    Hiroyuki Kakui, Misako Yamazaki, Kentaro K Shimizu

    The 140th Meeting of the Japanese Society of Breeding  2021.9.24 

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  • An improved pollen number counting method and factors affecting the pollen number in Japanese cedar

    Hiroyuki Kakui, Eriko Tsurisaki, Rei Shibata, Hidenori Sassa, Yoshinari Moriguchi

    The 85th Annual Meeting of the Botanical Society of Japan  2021.9.20 

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  • Natural variation of the REDUCED POLLEN NUMBER1 (RDP1) gene studied by the quantitative complementation test using the CRISPR/Cas9 system

    Kentaro Shimizu, Hiroyuki Kakui, Takashi Tsuchimatsu, Misako Yamazaki

    31st International Conference on Arabidopsis Research (ICAR2021)  2021.6.24 

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  • “花粉数”から読みとく、植物種・研究分野を超えた現象の理解

    Hiroyuki Kakui

    Society of Trans-disciplinary Plant Sciences  2021.6.4 

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    File: 20210603超会議_compressed.pdf

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  • “花粉数という形質の復興“による、シロイヌナズナからの花粉数を制御する遺伝子の同定、スギ花粉数への理解、NAMを基盤としたコムギの花粉数を制御する遺伝子の同定への挑戦 Invited

    角井 宏行

    京都大学 植物縦横無尽の会  2021.5.10 

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  • Development of efficient pollen number counting method and factors affected to pollen number in Japanese cedar

    Hiroyuki Kakui, Eriko Tsurisaki, Rei Shibata, Hidenori Sassa, Yoshinari Moriguchi

    132nd Meeting of The Japanese Forest Society  2021.3.23 

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  • 花粉数を変える遺伝子の発見 -ゲノム編集,GWAS,トレードオフ解析などを添えて- Invited

    角井宏行

    麦学オンラインセミナー  2021.3.1 

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  • 実践!ゲノム編集プロトコル -pKAMAITACHIベクターを用いた遺伝子破壊変異体の作製- Invited

    角井宏行

    新潟大学 農学部セミナー  2020.6.26 

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  • GWASとCRISPR/Cas9を用いた 花粉数を制御する遺伝子の同定 Invited

    角井宏行

    つくば森林総合研究所セミナー  2019.12.16 

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  • GWASとCRISPR/Cas9を用いた 花粉数を制御する遺伝子の同定 Invited

    角井宏行

    新潟大学セミナー  2019.12.5 

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  • Analysis of pollen number controlling genes Invited

    Hiroyuki Kakui

    Seminar at Kihara Institute for Biological Research, Yokohama City University  2019.11.13 

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  • Analysis of pollen number controlling genes Invited

    Hiroyuki Kakui

    Seminar at Chiba University  2019.11.11 

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  • Identification of pollen number controlling gene and trade-off analysis between pollen number and other traits in Arabidopsis thaliana

    Hiroyuki Kakui, Takashi Tsuchimatsu, Misako Yamazaki, Kentaro Shimizu

    11th Tri-National Arabidopsis Meeting  2019.4.11 

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  • Identification of pollen number controlling gene by GWAS and CRISPR/Cas9

    Hiroyuki Kakui

    Biology 19  2019.2.7 

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  • Is there a trade-off between pollen number and other traits in Arabidopsis thaliana?

    Kakui Hiroyuki, Tsuchimatsu Takashi, Yamazaki Misako, Shimizu Kentaro

    PSC Symposium 2018 “Breakthroughs in Plant Sciences”  2018.12.5 

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  • Pollen number controlling gene revealed by GWAS and CRISPR/Cas9 Invited International conference

    Hiroyuki Kakui

    25th ICSPR (International Conference on Sexual Plant Reproduction) - Plant Reproduction 2018  2018.6.13 

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  • GWASとCRISPR/Cas9が明らかにする自殖シンドローム関連遺伝子 Invited

    Hiroyuki Kakui

    Seminar at Chiba University  2018.6.5 

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  • Identification of pollen number controlling gene by GWAS and CRISPR/Cas9 International conference

    Hiroyuki Kakui

    Plant Development and Evolution: from molecules to ecosystems  2018.2.20 

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  • Identification and transcriptome analysis of pollen number controlling gene, RDP1 International conference

    Hiroyuki Kakui

    Symposium of the Zurich-Basel Plant Science Center  2017.11.30 

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    File: Abstracts_PSC_Symposium_2017_web.pdf

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  • Identification of a gene controlling pollen number by a GWAS and CRISPR mutants International conference

    Hiroyuki Kakui, Takashi Tsuchimatsu, Misako Yamazaki, Cindy Marona, Hiroki Tsutsui, Afif Hedhly, Dazhe Meng, Yutaka Sato, Thomas Stadler, Ueli Grossniklaus, Masahiro Kanaoka, Michael Lenhard, Magnus Nordborg, Kentaro Shimizu

    Symposium on “Detecting the Genomic Signal of Polygenic Adaptation and the Role of Epistasis in Evolution”  2017.8.31 

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    File: Program-Symposium-PolygenicAdaptation-Posters.pdf

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  • Identification of plant gamete number controlling gene by Genome wide association study and CRISPR/Cas9 Invited

    Hiroyuki Kakui

    BEEES seminar  2017.5.16 

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  • Adaptive Reduction of Male Gamete Number in a Selfing Species International conference

    Kakui Hiroyuki, Tsuchimatsu Takashi, Yamazaki Misako, Shimizu Kentaro

    LS2 annual meeting 2017  2017.2.2 

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    File: Booklet_LS2.pdf

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  • Adaptive reduction of male gamete number in a selfing species

    Kakui Hiroyuki, Tsuchimatsu Takashi, Yamazaki Misako, Shimizu Kentaro

    Symposium of Zurich-Basel Plant Science Center: Plants for Health– from research to application  2016.12.1 

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  • Self-incompatibility and evolution of selfing species in plants Invited

    Hiroyuki Kakui

    Seminar at Kihara Institute for Biological Research, Yokohama City University  2016.11.6 

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  • Adaptive reduction of male gamete number in a selfing species

    Hiroyuki Kakui, Takashi Tsuchimatsu, Misako Yamazaki, Cindy Marona, Hiroki Tsutsui, Afif Hedhly, Dazhe Meng, Yutaka Sato, Thomas Städler, Ueli Grossniklaus, Masahiro Kanaoka, Michael Lenhard, Magnus Nordborg, Kentaro K Shimizu

    新学術領域「新種誕生の原理」若手の会  2016.11.2 

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  • Adaptive reduction of male gamete number in a selfing species Invited International conference

    Hiroyuki Kakui

    2nd Swiss-Kyoto Symposium 2016  2016.10.31 

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  • REDUCED POLLEN NUMBER1 isolated by genome-wide association mapping showed recent selection on pollen number

    Takashi Tsuchimatsu, Hiroyuki Kakui, Misako Yamazaki, Cindy Marona, Hiroki Tsutsui, Afif Hedhly, Dazhe Meng, Yutaka Sato, Thomas Städler, Ueli Grossniklaus, Masahiro M Kanaoka, Michael Lenhard, Magnus Nordborg, Kentaro K Shimizu

    ICAR2016  2016.6.30 

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  • The genetic basis of pollen number variation revealed by a genome-wide association study in Arabidopsis thaliana. International conference

    Hiroyuki Kakui

    Symposium of the Zurich-Basel Plant Science Center  2015.12.3 

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  • Identification of pollen number controlling gene Invited

    Hiroyuki Kakui

    Seminar at Nagoya University  2015.9.18 

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  • Identification of pollen number controlling gene Invited

    Hiroyuki Kakui

    Seminar at Okayama University  2015.9.16 

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  • Identification of pollen number controlling gene Invited

    Hiroyuki Kakui

    Seminar at the University of Tokyo  2015.9.14 

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  • 自殖シンドローム:シロイヌナズナにおける自殖に関わる花形質の進化

    土松隆志, 土松隆志, 土松隆志, 角井宏行, 山崎美紗子, MARONA Cindy, MENG Dazhe, 金岡雅浩, STADLER Thomas, LENHARD Michael, NORDBORG Magnus, 清水健太郎

    日本植物学会大会研究発表記録  2015.9.1 

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  • GWASによる花粉数を制御する遺伝子の同定および解析

    角井 宏行

    第128回日本育種学会講演会  2015.9 

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  • The genetic basis of pollen number variation revealed by a genome-wide association study in Arabidopsis thaliana. International conference

    Hiroyuki Kakui

    International Congress on Sexual Plant Reproduction  2014.7.14 

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  • シロイヌナズナの自殖の進化:分子遺伝学と進化生物学を組み合わせたアプローチ

    清水健太郎, 土松隆志, 角井宏行, 山崎美紗子, YEW Chowlih

    日本植物生理学会年会要旨集  2014.3.11 

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  • バラ科果樹の自家不和合性における自己認識と非自己認識

    佐々英徳, 南川舞, 角井宏行

    育種学研究  2013.10.12 

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  • 分子遺伝学とシミュレーションを組み合わせて自殖進化の一般的パターンを探る

    清水健太郎, 土松隆志, 角井宏行, 山崎美紗子, YEW Chow‐lih

    日本分子生物学会年会プログラム・要旨集(Web)  2013 

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  • リンゴS遺伝子座のハプロタイプ間配列多様性とヘテロクロマチン化

    WANG S, 角井宏行, 菊池真司, 木庭卓人, 佐々英徳

    育種学研究  2012.9.14 

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  • ニホンナシにおける自家和合性変異ハプロタイプS4smの花粉側認識機能の解析

    角井宏行, 加藤雅樹, 牛島幸一郎, 加藤修, 北口美代子, 佐々英徳

    日本植物学会大会研究発表記録  2011.9.10 

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  • ニホンナシにおける雌ずい側自家和合性変異ハプロタイプの花粉側特異性の解析

    2011.9 

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  • Analysis of pollen-part S specificity of S4sm, a stylar-part self-compatible S haplotype in Japanese pear.

    角井宏行

    2011.9 

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  • Sequence divergence and loss-of-function phenotypes of SFBB genes are consistent with non-self recognition by multiple pollen determinants in self-incompatibility of Japanese pear.

    Hiroyuki Kakui, Masaki Kato, Koichiro Ushijima, Miyoko Kitaguchi, Shu Kato, Hidenori Sassa

    Annual meeting of American Society of Plant Biology  2011.8 

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  • Structural features of the S locus of apple Invited International conference

    Hidenori Sassa, Sanhong Wang, Mai Minamikawa, Hiroyuki Kakui

    International workshop of Floral biology and S-incompatibility in fruit species  2011.6 

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    Venue:Bologna  

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  • ニホンナシのRNase を介した自家不和合性機構の解析

    角井宏行, 加藤雅樹, 加藤修, 北口美代子, 佐々英徳

    2010.12 

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  • Characterization of S-RNase binding protein1 (SBP1) homolog of apple (Malus × domestica) International conference

    Minamikawa MaiFujii DaisukeKoyano, RyotaKakui HiroyukiKotoda NobuhiroSassa Hidenori

    10th International Congress on Plant Molecular Biology  2010.10 

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    Venue:Jeju island  

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  • ニホンナシにおける雌ずい側自家和合性変異ハプロタイプS4smの花粉側特異性の解析

    角井宏行, 加藤雅樹, 加藤修, 北口美代子, 佐々英徳

    第118回日本育種学会講演会  2010.9.24 

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  • リンゴにおける自家不和合性関連遺伝子SBP1(S‐RNase binding protein1)ホモログの同定と解析

    藤井大輔, 角井宏行, 古藤田信博, 牛島幸一郎, 佐々英徳

    育種学研究  2010.9.24 

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  • Characterization of the F-box gene cluster linked to the S-locus of apple International conference

    Minamikawa Mai, Kakui Hiroyuki, Wang SH, Kotoda Nobuhiro, Kikuchi Shinji, Koba Takato, Sassa Hidenori

    XXI International congress on Sexual Plant Reproduction  2010.8 

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    Venue:Bristol University  

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  • Analysis of pollen-part S specificity of S4sm, a stylar-part self-compatible S haplotype in Japanese pear.

    Hiroyuki Kakui, Masaki Kato, Shu Kato, Miyoko Kitaguchi, Hidenori Sassa

    XXI International Congress on Sexual Plant Reproduction  2010.8 

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  • Analysis of S locus-linked F-box gene cluster in apple.

    International Symposium of Cell-Cell Communication in Plant Reproduction: from pollination to fertilization  2010.3 

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  • Characterization of the F-box gene cluster linked to the S-locus of apple International conference

    Minamikawa M, Kakui H, Kotoda N, Sassa H

    Joint meeting of graduate students  2010 

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    Venue:Mahidol University  

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  • リンゴS遺伝子座に連鎖するF‐box遺伝子群の解析

    南川舞, 角井宏行, 古藤田信博, 佐々英徳

    育種学研究  2009.9.25 

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  • リンゴおよびナシにおける花粉S遺伝子候補の同定と解析 Invited

    角井宏行

    第115回日本育種学会講演会・育種学と農学のこれからを考える17若手会主催研究集会  2009.3 

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  • Characterization of multiple F-box genes linked to the S locus of apple and Japanese pear International conference

    Hidenori Sassa, Hiroyuki Kakui, Mai Minamikawa

    Frontiers of sexual plant reproduction III  2008.10 

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    Venue:Arizona  

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  • S-RNase遺伝子のCAPS分析に よるリンゴ品種 S 対立遺伝子 22 種類の識別

    Kim HT, 角井宏行, 古藤田信博, 木庭卓人, 佐々英徳

    2008.10 

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  • ニホンナシ S 遺伝子座 F-box 遺伝子の配列多様 性とその S 遺伝子型判定法への利用

    角井宏行, 都筑剛, 木庭卓人, 佐々英徳

    日本育種学会 第111回講演会  2007.3 

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  • ニホンナシの花粉で発現するS ハプロタイプ特異的F-box遺伝子群

    角井宏行, 佐々英徳

    遺伝研研究集会/特定領域研究 ゲノム障壁 ワークショップ  2006.11 

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  • ニホンナシ品種‘巾着’、‘大原紅’、‘若光’、 ‘なつひかり’の S 遺伝子型決定と新規 S-RNase の同定

    Kim HT, 角井宏行, 佐々英徳, 木庭卓人

    日本育種学会 第110会講演会  2006.9 

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  • ニホンナシの花粉で発現する S ハプロタイプ 特異的 F-box 遺伝子群

    角井宏行, 佐々英徳, 平野久, 木庭卓人

    日本育種学会 第110回講演会  2006.9 

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  • リンゴ S 遺伝子座の構造解析

    2006.9 

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  • ニホンナシの花粉で発現する Skp1 様遺伝子の単離

    角井宏行, 佐々英徳, 平野久

    日本育種学会 第107・108回講演会  2005.8 

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  • ニホンナシの花粉特異的 F-box 遺伝子

    角井宏行, 宮本摩由, 佐々英徳, 平野久

    日本育種学会 第107・108回講演会  2005.8 

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Industrial property rights

  • Probe induced heteroduplex mobility assay (PRIMA)

    Hiroyuki KakuiMisako YamazakiKentaro K Shimizu

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    Applicant:University of Zurich

    Application no:特願PCT/EP2020/072434  Date applied:2020.8.10

    Country of applicant:Foreign country   Country of acquisition:Domestic , Foreign country

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Awards

  • MBSJ2022 Science Pitch Award

    2022.12  

    Hiroyuki Kakui, Tokuko Ujino-Ihara, Yoichi Hasegawa, Eriko Tsurisaki, Norihiro Futamura, Junji Iwai, Yuumi Higuchi, Takeshi Fujino, Yutaka Suzuki, Masahiro Kasahara, Katsushi Yamaguchi, Shuji Shigenobu, Masahiro Otani, Masaru Nakano, Saneyoshi Ueno, Yoshinari Moriguchi

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  • Presentation award at the 141st meeting of the Japanese Society of Breeding

    2022.5  

    Hiroyuki Kakui, Tokuko Ujino-Ihara, Yoichi Hasegawa, Eriko Tsurisaki, Norihiro Futamura, Junji Iwai, Yuumi Higuchi, Takeshi Fujino, Yutaka Suzuki, Masahiro Kasahara, Katsushi Yamaguchi, Shuji Shigenobu, Masahiro Otani, Masaru Nakano, Saneyoshi Ueno, Yoshinari Moriguchi

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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  • Presentation award at the 140th meeting of the Japanese Society of Breeding

    2021.11  

    Hiroyuki Kakui, Misako Yamazaki, Kentaro K Shimizu

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

    PRIMA: a rapid and cost-effective genotyping method to detect single-nucleotide differences of DNA using probe-induced heteroduplexes

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  • Best poster award

    2021.6   Society of Trans-disciplinary Plant Sciences  

    Hiroyuki Kakui

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  • First prize for the poster award at the SPIRITS symposium

    2018.2   3rd International Plant Sciences Workshop, “Plant development and evolution: from molecules to Ecosystems”  

    Hiroyuki Kakui

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    Award type:Award from international society, conference, symposium, etc.  Country:Switzerland

    Identification of pollen number controlling gene by GWAS and CRISPR/Cas9

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  • 128th Japanese Society of Breeding presentation award

    2016.2  

    Hiroyuki Kakui

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  • 118th Japanese Society of Breeding presentation award

    2010.11  

    Hiroyuki Kakui

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  • Chiba University Ph.D. thesis award

    2009.3   Chiba University  

    Hiroyuki Kakui

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Research Projects

  • Research for pollen number gene by using yeast

    2023.10 - 2024.09

    University of Tokyo  Agricultural Science Emergence Fund (Support Project for Young Researchers) 

    Hiroyuki Kakui

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  • Analysis for the pollen number controlling pathway in wheat

    Grant number:JP22K19172  2022.07 - 2025.03

    Japan Society for the Promotion of Science  KAKENHI 

    Hiroyuki Kakui, Shuhei Nasuda

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  • Analysis for the pollen number controlling pathway in wheat

    Grant number:22K19172  2022.06 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    角井 宏行

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    Grant amount:\6240000 ( Direct expense: \4800000 、 Indirect expense:\1440000 )

    第二年度であるR5年度は、NBRPコムギ・京都大学育種学研究室が育成したNAM集団1060系統およびその親の24系統の葯長・花粉数・花粉サイズを計測した。計測方法として、第一にコムギの穂から開葯直前の葯を採取し実体顕微鏡で写真撮影を行い、画像解析によって葯長を計算した。続いて、採取した葯をtween-20を含む液体中で切断し花粉を液体中に放出させた。この花粉液をカラムによって洗浄したのち、セルカウンターで花粉数および花粉サイズを計測した。この計測は京都大学および共同研究先であるチューリヒ大学でも行なった。花粉数を比較したところ、興味深いことに花粉数は在来種と比べて近代栽培種で有意に少ないことがわかり、栽培化を通じで花粉数が減少したことが考えられた。花粉数が減少した原因として、栽培化による自殖傾向の増加により花粉数が減少したということや、近代種では半矮性形質の導入により植物体全体のサイズの減少が花粉数の減少を引き起こしたということが考えられた。NAM集団のmultiparental QTL解析により花粉数および葯長から有意なピークが得られた。花粉数から得られたピークのひとつは葯長のピークと同領域であることがわかり、さらにその座には半矮性遺伝子であるRht(Reduced height)遺伝子が含まれることがわかった。これは半矮性遺伝子の導入が葯長・花粉数減少に関与するという説を支持するものである。一方で葯長でのみ検出されたピークが複数存在することがわかり、葯長と花粉数の制御が同一の経路で行われている可能性があることが示唆された。

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  • Analyses of reproduction traits in wild wheat Aegilops tauschii

    Grant number:JP22H02307  2022.04 - 2027.03

    Japan Society for the Promotion of Science  KAKENHI 

    Hiroyuki Kakui, Yoshihiro Matsuoka, Moeko Okada

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  • Analyses of reproduction traits in wild wheat Aegilops tauschii.

    Grant number:22H02307  2022.04 - 2027.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    角井 宏行, 松岡 由浩, 岡田 萌子

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    Grant amount:\17550000 ( Direct expense: \13500000 、 Indirect expense:\4050000 )

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  • Analyses of reproduction traits in wild wheat Aegilops tauschii.

    Grant number:23K23573  2022.04 - 2027.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    角井 宏行, 岡田 萌子, 松岡 由浩

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    Grant amount:\17550000 ( Direct expense: \13500000 、 Indirect expense:\4050000 )

    植物の栽培化やその自殖化に伴って生じる自殖シンドロームによって花粉数は減少すると考えられており、実際にいくつかの植物種で花粉数や葯長の減少が観察されている。これらの花粉数を制御する遺伝子について現時点で明らかになっているものはごくわずかである。世界三大穀物であるコムギで花粉数を制御する遺伝子を明らかにすることは収量の向上や安定化が期待でき、農業上においても重要である。本研究では栽培種よりも多様な形質特性をもち、四倍体コムギ(パスタコムギ)や六倍体コムギ(パンコムギ)といった栽培コムギと比較してシンプルなゲノム構造をもつ二倍体の野生種タルホコムギを用いて解析を行い、花粉数や葯長、花粉サイズを制御する遺伝子の同定を試みる。第二年度であるR5年度は、タルホコムギのコアコレクションの約200系統についてR4年度で計測した葯長・花粉数・花粉サイズについて形質の解析およびゲノムワイド関連解析(GWAS)を行なった。その結果、花粉数は1小花あたり数百粒から7000粒と系統間で大きな多様性があることがわかり、野生種の多様性の高さを裏付けるような結果が得られた。GWASの結果、有意なピークが得られた一方で、近傍の複数のマーカーが有意に高いスコアを持つような明らかに有望と思われるような領域は得られなかった。この結果に対しては、系統数をさらに増やすことや採取地が多様な系統を用いることでGWASの精度が向上すると考えられた。

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  • Platform for Advanced Genome Science

    2020.04

    Advanced Genomics Center  Platform for Advanced Genome Science 

    Hiroyuki Kakui

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  • Analysis for the pollen number controlling pathway and application for the crops

    Grant number:19K05976  2019.04 - 2022.03

    Japan Society for the Promotion of Science  KAKENHI  C

    Hiroyuki Kakui

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    Authorship:Principal investigator 

    Grant amount:\4420000 ( Direct expense: \3400000 、 Indirect expense:\1020000 )

    In this study, we developed high-throughput pollen counting method. We found RDP1 as pollen number controlling gene by using GWAS and genome-editing. Transcriptome analysis revealed DEGs in RDP1 mutant. We developed PRIMA, which is enable to distinguish 1-bp difference by PCR and electrophoresis. Furthermore, we identified the causal gene of MS4 in Japanese cedar.

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  • Elucidation of the molecular mechanism for evolution and adaptation in self-incompatibility

    2013.04 - 2015.03

    Japan Society for the Promotion of Science  Research Fellow of the Japan Society for the Promotion of Science (for Abroad) 

    Hiroyuki Kakui

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  • Research Fellow of the Japan Society for the Promotion of Science (for Post-doc)

    Grant number:10J05057  2010 - 2012

    日本学術振興会  科学研究費助成事業 特別研究員奨励費(PD)  特別研究員奨励費

    角井 宏行

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    Grant amount:\2800000 ( Direct expense: \2800000 )

    ペチュニアの花粉管を観察する上での最大の障害は花粉管が伸長するめしべの組織が非常に厚く、自家蛍光が強いため観察が非常に困難であることである。花粉管は培地中でもある程度伸長するため、透明な培地の中での観察も有効であると考えられたが、培地には厚さがあるため花粉管が上下に伸長してしまい顕微鏡で観察する際に焦点がずれてしまうという問題があった。そこで東山ERATOナノ工学グループとの話し合いを行ったところ、マイクロチップを用いることでこの培地の厚さの問題を解決できると考えられた。マイクロチップは透明なシリコン樹脂(PDMS)を型に流し込むことで作製することができる。型は縦、横、高さをマイクロメートル単位で精密に設計できるため、高さを花粉管1本が通れる高さに設計することで花粉管の焦点を合わせたまま観察できるようになった。実際に花粉管がこのマイクロチップ内の通路を通過するかどうかを通路内にペチュニア用の培地で満たした状態で観察したところ、通路内を花粉管が伸長する様子が観察された。
    本研究の目的はS-RNase型の自家不和合性を制御する花粉側の因子であるSLFとめしべ側因子であるS-RNaseの局在を明らかにすることである。SLFとTagRFPが融合したペチュニア形質転換体に続いて本年度ではS-RNaseとGFPが融合した形質転換体を得た。これらの形質転換体のコンストラクトが正常に機能すれば同じタイプの花粉を拒絶するはずであり、自己のタイプを解毒できるSLFをもつ花粉を受粉すると花粉が伸長するはずである。まず自己のタイプの花粉を人工授粉した。その結果、果実部分が肥大せずに枯れることが確認された。これは受精が失敗した時に特有の形態である。今後例数を増やしこの現象が本当に起きているかを確認する。

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  • Research Fellow of the Japan Society for the Promotion of Science (for Ph.D student.)

    Grant number:08J06206  2008 - 2009

    日本学術振興会  科学研究費助成事業 特別研究員奨励費(DC2)  特別研究員奨励費

    角井 宏行

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    Grant amount:\1200000 ( Direct expense: \1200000 )

    <BACクローンを用いたSFBBの単離>
    以前の報告では花粉S遺伝子の候補は1ハプロタイプあたりリンゴで2クローン、ナシからは3クローン得られているが、実際には更に多数のSFBB様配列があることがわかってきた。そこでリンゴ'Florina'のBACライブラリーよりSFBB遺伝子をプローブに用いスクリーニングを行い、SFBBを単離したところ、20のSFBBが単離された。Sハプロタイプの帰属を検定したところS3ハプロタイプに帰属するものが10クローン、S9ハプロタイプに帰属するものが9クローン、Sハプロタイプ特異性がないものが1クローンであった。これらのSFBBがS遺伝子座と連鎖しているかどうかをS3-RNaseおよびS9-RNaseを用いて後代検定したところ、239系統の後代で全てのSFBBが完全に連鎖していることが明らかになった。さらにこれらの遺伝子の発現を解析したところ、すべてのSFBBが花粉で特異的に発現していることが明らかになった。これらの配列を基に系統樹を作製したところ、これらの配列はハプロタイプごとにクラスターを形成するのではなく、ある配列には異なるハプロタイプの配列が近くに位置するという傾向が明らかになった。もし、SFBBが認識には関係しないのであれば配列はランダムに変異すると考えられるため、このような系統関係は見られないと考えられた。S-RNaseタイプの自家不和合性では通常1ハプロタイプあたりS-RNase遺伝子と花粉S遺伝子が1クローンずつ存在すると考えられており、今回のように多数のSFBB様遺伝子がS遺伝子座に連鎖し、かつ花粉特異的に発現している例は初めてである。今後はこれらのSFBBが実際に自家不和合性に関わっているのかどうかを明らかにする予定である。これらの内容を投稿し、現在審査中である。

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  • Achieving zero food risks by improving crop robustness using cyber-physical systems

    Grant number:JPJ009237 

    The Moonshot Program for agriculture, forestry and fisheries 

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    Authorship:Coinvestigator(s) 

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Other research activities

  • License agreement for PRIMA (SHIMADZU corporation, University of Zurich, Yokohama City University)

    2022.04

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    Inventor: Hiroyuki Kakui, Misako Yamazaki, Kentaro K Shimizu
    Patentee: University of Zurich, Yokohama City University
    Licensee: SHIMADZU corporation

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Social Activities

  • 保谷中学校 職場体験 自生植物の花と花粉のSEM観察

    Role(s):Lecturer, Demonstrator

    2023.10.27

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    Type:Research consultation

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  • 相模原中等教育学校高校生のオンラインインタビュー(日経STOCKリーグ関連)

    Role(s):Commentator

    2023.9.26

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    Type:Citizen’s meeting/Assembly

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  • 都立日比谷高校生の研究室訪問による研究紹介

    Role(s):Informant

    2023.8.3

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  • Guided tour of the Molecular Biology Laboratory and explanation of ongoing research at Kentaro Shimizu Group for Art students in the framework of the SNF Agora project Creative Camps together with the Plant Science Center

    Role(s):Lecturer, Demonstrator

    SNF Agora project Creative Camps together with the Plant Science Center  2018.9

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    Type:University open house

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  • Guided tour of the Molecular Biology Laboratory and explanation of ongoing research at Kentaro Shimizu Group (30h) for Kantonsschule Wattwil together with the Life Science Learning Center UZH

    Role(s):Lecturer, Demonstrator

    Life Science Learning Center UZH  2018.6

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    Type:University open house

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Academic Activities

  • 日本育種学会145回講演会 運営委員

    Role(s):Planning, management, etc.

    2024.3.16 - 2024.3.17

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    Type:Academic society, research group, etc. 

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  • 日本育種学会144回講演会第6ワークショップ主任

    Role(s):Planning, management, etc., Panel moderator, session chair, etc.

    角井宏行 岡田萌子 佐久間俊 南川舞  2023.9.16

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    Type:Competition, symposium, etc. 

    コロナ・ポストコロナ期の海外留学・在外研究最新事情
    講演者:岡田萌子、岡田眞銀、増田佳苗、小松田隆夫

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  • UJA2022

    Role(s):Panel moderator, session chair, etc.

    United Japanese researchers Around the world  2022.11.30

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  • Symposium organizer in 79th The Botanical Society Japan

    Role(s):Planning, management, etc.

    Hiroyuki Kakui, Daisuke Maruyama  2015.9

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    Type:Competition, symposium, etc. 

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