研究者詳細 - 最相　大輔

MISC - 最相　大輔

分割表示 114 件中 61 - 80 件目／全件表示 >>

植物ゲノムへ水平伝播された太古のパルティティウイルス配列

千葉壮太郎, 近藤秀樹, 谷明生, 最相大輔, 坂本亘, 兼松聡子, 鈴木信弘

日本植物病理学会報 78 ( 1 ) 2012年

栽培オオムギにおける春化要求性の自然変異:高度秋播性は東アジアに偏在する

最相大輔, 石井誠, 堀清純, 佐藤和広

育種学研究 13 80 2011年9月

QTL解析の実践 : 押さえておきたい3つのキーワード「連続分布」「分散」「遺伝率」

最相大輔, 堀清純

種生物学研究 34 51 - 62 2011年7月

Widespread Endogenization of Genome Sequences of Non-Retroviral RNA Viruses into Plant Genomes

Sotaro Chiba, Hideki Kondo, Akio Tani, Daisuke Saisho, Wataru Sakamoto, Satoko Kanematsu, Nobuhiro Suzuki

PLOS PATHOGENS 7 ( 7 ) e1002146 2011年7月

記述言語：英語出版者・発行元：PUBLIC LIBRARY SCIENCE

Non-retroviral RNA virus sequences (NRVSs) have been found in the chromosomes of vertebrates and fungi, but not plants. Here we report similarly endogenized NRVSs derived from plus-, negative-, and double-stranded RNA viruses in plant chromosomes. These sequences were found by searching public genomic sequence databases, and, importantly, most NRVSs were subsequently detected by direct molecular analyses of plant DNAs. The most widespread NRVSs were related to the coat protein (CP) genes of the family Partitiviridae which have bisegmented dsRNA genomes, and included plant-and fungus-infecting members. The CP of a novel fungal virus (Rosellinia necatrix partitivirus 2, RnPV2) had the greatest sequence similarity to Arabidopsis thaliana ILR2, which is thought to regulate the activities of the phytohormone auxin, indole-3-acetic acid (IAA). Furthermore, partitivirus CP-like sequences much more closely related to plant partitiviruses than to RnPV2 were identified in a wide range of plant species. In addition, the nucleocapsid protein genes of cytorhabdoviruses and varicosaviruses were found in species of over 9 plant families, including Brassicaceae and Solanaceae. A replicase-like sequence of a betaflexivirus was identified in the cucumber genome. The pattern of occurrence of NRVSs and the phylogenetic analyses of NRVSs and related viruses indicate that multiple independent integrations into many plant lineages may have occurred. For example, one of the NRVSs was retained in Ar. thaliana but not in Ar. lyrata or other related Camelina species, whereas another NRVS displayed the reverse pattern. Our study has shown that single-and double-stranded RNA viral sequences are widespread in plant genomes, and shows the potential of genome integrated NRVSs to contribute to resolve unclear phylogenetic relationships of plant species.

DOI： 10.1371/journal.ppat.1002146

Web of Science

researchmap

Natural variation of barley vernalization requirements : Implication of quantitative variation of inter growth habit as an adaptive trait in East Asia.

最相大輔

Plant and Cell Physiology 52 ( 5 ) 775 - 84 2011年5月

Barley: Emergence as a New Research Material of Crop Science

Daisuke Saisho, Kazuyoshi Takeda

PLANT AND CELL PHYSIOLOGY 52 ( 5 ) 724 - 727 2011年5月

オオムギ種子の耐水性の地理的分布

最相大輔, 石井誠, 佐藤和宏, 武田和義

育種学研究 13 2011年

非レトロRNAウイルス由来の植物染色体配列

近藤秀樹, 千葉壮太郎, 谷明生, 最相大輔, 坂本亘, 兼松聡子, 鈴木信弘

日本植物病理学会大会プログラム・講演要旨予稿集 2011 2011年

Uzu, a barley semi-dwarf gene, suppresses plant regeneration in calli derived from immature embryos

Kazuhide Rikiishi, Daisuke Saisho, Kazuyoshi Takeda

Proceedings of the 10th international barley genetics symposium 679 - 686 2010年

非パラレトロRNAウイルス由来の植物染色体遺伝子

千葉壮太郎, 近藤秀樹, 谷明生, 最相大輔, 坂本亘, 兼松聡子, 鈴木信弘

日本ウイルス学会学術集会プログラム・抄録集 58th 2010年

皮性・裸性を支配するNud遺伝子の多型からみた栽培オオムギの起源

武田真, 辻野泰弘, 湯尾崇央, 最相大輔, 漆川直希, 春山直人, 大関美香

育種学研究 12 2010年

六条オオムギの進化過程

最相大輔, MOHAMMAD Pourkheirandish, 小松田隆夫

育種学研究 11 2009年

TriMEDB: A database to integrate transcribed markers and facilitate genetic studies of the tribe Triticeae

Keiichi Mochida, Daisuke Saisho, Takuhiro Yoshida, Tetsuya Sakurai, Kazuo Shinozaki

BMC PLANT BIOLOGY 8 72 2008年6月

記述言語：英語出版者・発行元：BIOMED CENTRAL LTD

Background: The recent rapid accumulation of sequence resources of various crop species ensures an improvement in the genetics approach, including quantitative trait loci (QTL) analysis as well as the holistic population analysis and association mapping of natural variations. Because the tribe Triticeae includes important cereals such as wheat and barley, integration of information on the genetic markers in these crops should effectively accelerate map-based genetic studies on Triticeae species and lead to the discovery of key loci involved in plant productivity, which can contribute to sustainable food production. Therefore, informatics applications and a semantic knowledgebase of genome-wide markers are required for the integration of information on and further development of genetic markers in wheat and barley in order to advance conventional marker-assisted genetic analyses and population genomics of Triticeae species.
Description: The Triticeae mapped expressed sequence tag (EST) database (TriMEDB) provides information, along with various annotations, regarding mapped cDNA markers that are related to barley and their homologues in wheat. The current version of TriMEDB provides map-location data for barley and wheat ESTs that were retrieved from 3 published barley linkage maps (the barley single nucleotide polymorphism database of the Scottish Crop Research Institute, the barley transcript map of Leibniz Institute of Plant Genetics and Crop Plant Research, and HarvEST barley ver. 1.63) and 1 diploid wheat map. These data were imported to CMap to allow the visualization of the map positions of the ESTs and interrelationships of these ESTs with public gene models and representative cDNA sequences. The retrieved cDNA sequences corresponding to each EST marker were assigned to the rice genome to predict an exon-intron structure. Furthermore, to generate a unique set of EST markers in Triticeae plants among the public domain, 3472 markers were assembled to form 2737 unique marker groups as contigs. These contigs were applied for pairwise comparison among linkage maps obtained from different EST map resources.
Conclusion: TriMEDB provides information regarding transcribed genetic markers and functions as a semantic knowledgebase offering an informatics facility for the acceleration of QTL analysis and for population genetics studies of Triticeae.

DOI： 10.1186/1471-2229-8-72

Web of Science

researchmap

Uzu, a barley semi-dwarf gene, suppresses plant regeneration in calli derived from immature embryos

Kazuhide Rikiishi, Daisuke Saisho, Kazuyoshi Takeda

BREEDING SCIENCE 58 ( 2 ) 149 - 155 2008年6月

記述言語：英語出版者・発行元：JAPANESE SOC BREEDING

Barley includes semi-dwarf varieties, called uzu, which are localized in parts of southwestern Japan, the Southern Korea peninsula, and coastal areas of China. The uzu phenotype possesses dark green leaves and short coleoptiles, awns, and panicles. It is controlled by a single recessive gene: uzu. Uzu results from a mutation in the brassinosteroid receptor kinase gene (HvBR11). Brassinosteroid synergistically acts with auxin on plant morphology, which is an important plant hormone for tissue culture. For this study, tissue Culture traits, including callus growth and shoot regeneration capability, were examined in F-2 populations derived from crosses between normal and uzu lines, and in isogenic lines for the uzu gene. The uzu genotype shows a lower percentage of shoot regeneration than the normal genotype in F, populations and isogenic lines. The uzu gene negatively affects shoot regeneration. No significant differences were Found In callus growth capability between uzu and normal genotypes. Uzu isogenic lines show higher sensitivity to exogenous auxin for callus initiation than normal lines, when immature embryos were incubated on media supplemented with several concentrations of 2,4-D under culture at higher temperature (25 degrees C). Tissue Culture traits of uzu might be regulated through cross-talk between brassinosteroid and auxin.

DOI： 10.1270/jsbbs.58.149

Web of Science

researchmap

Barley grain with adhering hulls is controlled by an ERF family transcription factor gene regulating a lipid biosynthesis pathway. 国際誌

Shin Taketa, Satoko Amano, Yasuhiro Tsujino, Tomohiko Sato, Daisuke Saisho, Katsuyuki Kakeda, Mika Nomura, Toshisada Suzuki, Takashi Matsumoto, Kazuhiro Sato, Hiroyuki Kanamori, Shinji Kawasaki, Kazuyoshi Takeda

Proceedings of the National Academy of Sciences of the United States of America 105 ( 10 ) 4062 - 7 2008年3月

記述言語：英語

In contrast to other cereals, typical barley cultivars have caryopses with adhering hulls at maturity, known as covered (hulled) barley. However, a few barley cultivars are a free-threshing variant called naked (hulless) barley. The covered/naked caryopsis is controlled by a single locus (nud) on chromosome arm 7HL. On the basis of positional cloning, we concluded that an ethylene response factor (ERF) family transcription factor gene controls the covered/naked caryopsis phenotype. This conclusion was validated by (i) fixation of the 17-kb deletion harboring the ERF gene among all 100 naked cultivars studied; (ii) two x-ray-induced nud alleles with a DNA lesion at a different site, each affecting the putative functional motif; and (iii) gene expression strictly localized to the testa. Available results indicate the monophyletic origin of naked barley. The Nud gene has homology to the Arabidopsis WIN1/SHN1 transcription factor gene, whose deduced function is control of a lipid biosynthesis pathway. Staining with a lipophilic dye (Sudan black B) detected a lipid layer on the pericarp epidermis only in covered barley. We infer that, in covered barley, the contact of the caryopsis surface, overlaid with lipids to the inner side of the hull, generates organ adhesion.

DOI： 10.1073/pnas.0711034105

PubMed

researchmap

東アジアに局在するオオムギ半矮性系統”渦”の進化的・形態的・生理的な多様性解析

武田和義, 力石和英, 最相大輔

平成16年度〜平成18年度科学研究費補助金基盤研究B 研究成果報告書 1 - 110 2008年

Molecular phylogeography of domesticated barley traces expansion of agriculture in the Old World

Daisuke Saisho, Michael D. Purugganan

GENETICS 177 ( 3 ) 1765 - 1776 2007年11月

記述言語：英語出版者・発行元：GENETICS

Barley (Hordeum vulgare ssp. vulgare) was first cultivated 10,500 years ago in the Fertile Crescent and is one of the founder crops of Eurasian agriculture. Phylogeographic analysis of five nuclear loci and morphological assessment of two traits in >250 domesticated barley accessions reveal that landraces found in South and East Asia are genetically distinct from those in Europe and North Africa. A Bayesian population structure assessment method indicates that barley accessions are subdivided into six clusters and that barley landraces from 10 different geographical regions of Eurasia and North Africa show distinct patterns of distribution across these clusters. Using haplotype frequency data, it appears that the Europe/North Africa landraces are most similar to the Near East population (F-ST = 0.15) as well as to wild barley (F-ST = 0.11) and are strongly differentiated from all other Asian populations (F-ST = 0.34-0.74). A neighbor-joining analysis using these F-ST estimates also supports a division between European, North African, and Near East barley types from more easterly Asian accessions. There is also differentiation in the presence of a naked caryopsis and spikelet row number between eastern and western barley accessions. The data support the differential migration of barley from two domestication events that led to the origin of barley - one in the Fertile Crescent and another farther east, possibly at the eastern edge of the Iranian Plateau - with European and North African barley largely originating from the former and much of Asian barley arising from the latter. This suggests that cultural diffusion or independent innovation is responsible for the expansion of agriculture to areas of South and East Asia during the Neolithic revolution.

DOI： 10.1534/genetics.107.079491

Web of Science

researchmap

Construction and Characterization of a Bacterial Artificial Chromosome (BAC) Library from Japanese Malting Barley ‘Haruna Nijo’.

Saisho, D, E. Myoraku, S. Kawasaki, K. Sato, K. Takeda

Breed. Sci. 57 ( 1 ) 29 - 38 2007年3月

草型変異から見たイネとオオムギの栽培化．

浅野賢治, 最相大輔, 芦苅基行, 松岡信

蛋白質核酸酵素 52 ( 15 ) 1931 - 1936 2007年

酸化ストレスとミトコンドリア機能—二層膜オルガネラの遺伝学 ; オルガネラダイナミクス植物ミトコンドリアダイナミクスと環境応答

目黒直樹, 最相大輔, 中園幹生

蛋白質核酸酵素 / 共立出版株式会社 [編] 50 ( 14 ) 1879 - 1882 2005年11月

　前のページ - 次のページ　

<最相 大輔>

MISC - 最相 大輔

<最相　大輔>

MISC - 最相　大輔