研究者詳細 - 平山　隆志

論文 - 平山　隆志

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Identification and characterization of functional DOG1 residues regulating the abscisic acid response in Arabidopsis

Noriyuki Nishimura, Wataru Tsuchiya, Nahomi Suzuki, Takashi Hirayama, Toshimasa Yamazaki

The Plant Journal 2025年4月

Responses of the marine filamentous red alga ‘Bangia’ sp. ESS1 to recurrent changes in seawater concentration 査読

Puja Kumari, Ryo Matsushima, Takashi Hirayama, Koji Mikami

Algal Research 80 103551 - 103551 2024年6月

Synchronization between chloroplastic and cytosolic protein synthesis for photosynthesis complex assembly

Taisei Wakigawa, Tomoya Fujita, Naohiro Kawamoto, Yukio Kurihara, Yuu Hirose, Takashi Hirayama, Hirotaka Toh, Tomoko Kuriyama, Atsushi Hashimoto, Eriko Matsuura-Suzuki, Keiichi Mochida, Minoru Yoshida, Minami Matsui, Shintaro Iwasaki

2024年5月

Application of Trehalose Mitigates Short-Styled Flowers in Solanaceous Crops 査読

Izumi C. Mori, Takakazu Matsuura, Masahiro Otao, Lia Ooi, Yasuyo Nishimura, Takashi Hirayama

Journal of Agricultural and Food Chemistry 71 ( 14 ) 5476 - 5482 2023年4月

Exome-wide variation in a diverse barley panel reveals genetic associations with ten agronomic traits in Eastern landraces 査読

June-Sik Kim, Kotaro Takahagi, Komaki Inoue, Minami Shimizu, Yukiko Uehara-Yamaguchi, Asaka Kanatani, Daisuke Saisho, Ryuei Nishii, Alexander E. Lipka, Takashi Hirayama, Kazuhiro Sato, Keiichi Mochida

Journal of Genetics and Genomics 2022年12月

FE UPTAKE‐INDUCING PEPTIDE1 maintains Fe translocation by controlling Fe deficiency response genes in the vascular tissue of Arabidopsis 査読国際誌

Satoshi Okada, Gui J. Lei, Naoki Yamaji, Sheng Huang, Jian F. Ma, Keiichi Mochida, Takashi Hirayama

Plant, Cell & Environment 45 ( 11 ) 3322 - 3337 2022年11月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Wiley

FE UPTAKE-INDUCING PEPTIDE1 (FEP1), also named IRON MAN3 (IMA3) is a short peptide involved in the iron deficiency response in Arabidopsis thaliana. Recent studies uncovered its molecular function, but its physiological function in the systemic Fe response is not fully understood. To explore the physiological function of FEP1 in iron homoeostasis, we performed a transcriptome analysis using the FEP1 loss-of-function mutant fep1-1 and a transgenic line with oestrogen-inducible expression of FEP1. We determined that FEP1 specifically regulates several iron deficiency-responsive genes, indicating that FEP1 participates in iron translocation rather than iron uptake in roots. The iron concentration in xylem sap under iron-deficient conditions was lower in the fep1-1 mutant and higher in FEP1-induced transgenic plants compared with the wild type (WT). Perls staining revealed a greater accumulation of iron in the cortex of fep1-1 roots than in the WT root cortex, although total iron levels in roots were comparable in the two genotypes. Moreover, the fep1-1 mutation partially suppressed the iron overaccumulation phenotype in the leaves of the oligopeptide transporter3-2 (opt3-2) mutant. These data suggest that FEP1 plays a pivotal role in iron movement and in maintaining the iron quota in vascular tissues in Arabidopsis.

DOI： 10.1111/pce.14424

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/pce.14424

Plant Hormonomics: A Key Tool for Deep Physiological Phenotyping to Improve Crop Productivity. 招待査読

Takashi Hirayama, Keiichi Mochida

Plant & cell physiology 2022年5月

担当区分：筆頭著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Agriculture is particularly vulnerable to climate change. To cope with the risks posed by climate-related stressors to agricultural production, global population growth, and changes in food preferences, it is imperative to develop new climate-smart crop varieties with increased yield and environmental resilience. Molecular genetics and genomic analyses have revealed that allelic variations in genes involved in phytohormone-mediated growth regulation have greatly improved productivity in major crops. Plant science has remarkably advanced our understanding of the molecular basis of various phytohormone-mediated events in plant life. These findings provide essential information for improving the productivity of crops growing in changing climates. In this review, we highlight the recent advances in plant hormonomics (multiple phytohormone profiling) and discuss their application to crop improvement. We present plant hormonomics as a key tool for deep physiological phenotyping, focusing on representative plant growth regulators associated with the improvement of crop productivity. Specifically, we review advanced methodologies in plant hormonomics, highlighting mass spectrometry- and nanosensor-based plant hormone profiling techniques. We also discuss the applications of plant hormonomics in crop improvement through breeding and agricultural management practices.

DOI： 10.1093/pcp/pcac067

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PARN-like Proteins Regulate Gene Expression in Land Plant Mitochondria by Modulating mRNA Polyadenylation 招待査読

Takashi Hirayama

International Journal of Molecular Sciences 22 ( 19 ) 10776 - 10776 2021年10月

Genetic Elucidation for Response of Flowering Time to Ambient Temperatures in Asian Rice Cultivars 査読

Kiyosumi Hori, Daisuke Saisho, Kazufumi Nagata, Yasunori Nonoue, Yukiko Uehara-Yamaguchi, Asaka Kanatani, Koka Shu, Takashi Hirayama, Jun-ichi Yonemaru, Shuichi Fukuoka, Keiichi Mochida

International Journal of Molecular Sciences 22 ( 3 ) 1024 - 1024 2021年1月

掲載種別：研究論文（学術雑誌）出版者・発行元：{MDPI} {AG}

Climate resilience of crops is critical for global food security. Understanding the genetic basis of plant responses to ambient environmental changes is key to developing resilient crops. To detect genetic factors that set flowering time according to seasonal temperature conditions, we evaluated differences of flowering time over years by using chromosome segment substitution lines (CSSLs) derived from japonica rice cultivars “Koshihikari” × “Khao Nam Jen”, each with different robustness of flowering time to environmental fluctuations. The difference of flowering times in 9 years’ field tests was large in “Khao Nam Jen” (36.7 days) but small in “Koshihikari” (9.9 days). Part of this difference was explained by two QTLs. A CSSL with a “Khao Nam Jen” segment on chromosome 11 showed 28.0 days’ difference; this QTL would encode a novel flowering-time gene. Another CSSL with a segment from “Khao Nam Jen” in the region around Hd16 on chromosome 3 showed 23.4 days” difference. A near-isogenic line (NIL) for Hd16 showed 21.6 days’ difference, suggesting Hd16 as a candidate for this QTL. RNA-seq analysis showed differential expression of several flowering-time genes between early and late flowering seasons. Low-temperature treatment at panicle initiation stage significantly delayed flowering in the CSSL and NIL compared with “Koshihikari”. Our results unravel the molecular control of flowering time under ambient temperature fluctuations.

DOI： 10.3390/ijms22031024

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Temperature-dependent fasciation mutants provide a link between mitochondrial RNA processing and lateral root morphogenesis. 査読

Kurataka Otsuka, Akihito Mamiya, Mineko Konishi, Mamoru Nozaki, Atsuko Kinoshita, Hiroaki Tamaki, Masaki Arita, Masato Saito, Kayoko Yamamoto, Takushi Hachiya, Ko Noguchi, Takashi Ueda, Yusuke Yagi, Takehito Kobayashi, Takahiro Nakamura, Yasushi Sato, Takashi Hirayama, Munetaka Sugiyama

eLife 10 2021年1月

掲載種別：研究論文（学術雑誌）出版者・発行元：eLife Sciences Publications, Ltd

Although mechanisms that activate organogenesis in plants are well established, much less is known about the subsequent fine-tuning of cell proliferation, which is crucial for creating properly structured and sized organs. Here we show, through analysis of temperature-dependent fasciation (TDF) mutants of Arabidopsis, <italic>root redifferentiation defective 1</italic> (<italic>rrd1</italic>), <italic>rrd2</italic>, and <italic>root initiation defective 4</italic> (<italic>rid4</italic>), that mitochondrial RNA processing is required for limiting cell division during early lateral root (LR) organogenesis. These mutants formed abnormally broadened (i.e. fasciated) LRs under high-temperature conditions due to extra cell division. All TDF proteins localized to mitochondria, where they were found to participate in RNA processing: RRD1 in mRNA deadenylation, and RRD2 and RID4 in mRNA editing. Further analysis suggested that LR fasciation in the TDF mutants is triggered by reactive oxygen species generation caused by defective mitochondrial respiration. Our findings provide novel clues for the physiological significance of mitochondrial activities in plant organogenesis.

DOI： 10.7554/elife.61611

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The barley pan-genome reveals the hidden legacy of mutation breeding 査読

Jayakodi, M., Padmarasu, S., Haberer, G., Bonthala, V.S., Gundlach, H., Monat, C., Lux, T., Kamal, N., Lang, D., Himmelbach, A., Ens, J., Zhang, X.-Q., Angessa, T.T., Zhou, G., Tan, C., Hill, C., Wang, P., Schreiber, M., Boston, L.B., Plott, C., Jenkins, J., Guo, Y., Fiebig, A., Budak, H., Xu, D., Zhang, J., Wang, C., Grimwood, J., Schmutz, J., Guo, G., Zhang, G., Mochida, K., Hirayama, T., Sato, K., Chalmers, K.J., Langridge, P., Waugh, R., Pozniak, C.J., Scholz, U., Mayer, K.F.X., Spannagl, M., Li, C., Mascher, M., Stein, N.

Nature 588 ( 7837 ) 284 - 289 2020年12月

BdWRKY38 is required for the incompatible interaction of Brachypodium distachyon with the necrotrophic fungus Rhizoctonia solani 査読国際誌

Yusuke Kouzai, Minami Shimizu, Komaki Inoue, Yukiko Uehara‐Yamaguchi, Kotaro Takahagi, Risa Nakayama, Takakazu Matsuura, Izumi C. Mori, Takashi Hirayama, Sobhy S. H. Abdelsalam, Yoshiteru Noutoshi, Keiichi Mochida

The Plant Journal 104 ( 4 ) 995 - 1008 2020年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Wiley

Rhizoctonia solani is a soil-borne necrotrophic fungus that causes sheath blight in grasses. The basal resistance of compatible interactions between R. solani and rice is known to be modulated by some WRKY transcription factors (TFs). However, genes and defense responses involved in incompatible interaction with R. solani remain unexplored, because no such interactions are known in any host plants. Recently, we demonstrated that Bd3-1, an accession of the model grass Brachypodium distachyon, is resistant to R. solani and, upon inoculation with the fungus, undergoes rapid induction of genes responsive to the phytohormone salicylic acid (SA) that encode the WRKY TFs BdWRKY38 and BdWRKY44. Here, we show that endogenous SA and these WRKY TFs positively regulate this accession-specific R. solani resistance. In contrast to a susceptible accession (Bd21), the infection process in the resistant accessions Bd3-1 and Tek-3 was suppressed at early stages before the development of fungal biomass and infection machinery. A comparative transcriptome analysis during pathogen infection revealed that putative WRKY-dependent defense genes were induced faster in the resistant accessions than in Bd21. A gene regulatory network (GRN) analysis based on the transcriptome dataset demonstrated that BdWRKY38 was a GRN hub connected to many target genes specifically in resistant accessions, whereas BdWRKY44 was shared in the GRNs of all three accessions. Moreover, overexpression of BdWRKY38 increased R. solani resistance in Bd21. Our findings demonstrate that these resistant accessions can activate an incompatible host response to R. solani, and BdWRKY38 regulates this response by mediating SA signaling.

DOI： 10.1111/tpj.14976

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/tpj.14976

Exploration of Life-Course Factors Influencing Phenotypic Outcomes in Crops 査読

Keiichi Mochida, Alexander E Lipka, Takashi Hirayama

Plant and Cell Physiology 61 ( 8 ) 1381 - 1383 2020年8月

Decoding Plant–Environment Interactions That Influence Crop Agronomic Traits 査読

Keiichi Mochida, Ryuei Nishii, Takashi Hirayama

Plant and Cell Physiology 61 ( 8 ) 1408 - 1418 2020年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Oxford University Press (OUP)

<title>Abstract</title>To ensure food security in the face of increasing global demand due to population growth and progressive urbanization, it will be crucial to integrate emerging technologies in multiple disciplines to accelerate overall throughput of gene discovery and crop breeding. Plant agronomic traits often appear during the plants’ later growth stages due to the cumulative effects of their lifetime interactions with the environment. Therefore, decoding plant–environment interactions by elucidating plants’ temporal physiological responses to environmental changes throughout their lifespans will facilitate the identification of genetic and environmental factors, timing and pathways that influence complex end-point agronomic traits, such as yield. Here, we discuss the expected role of the life-course approach to monitoring plant and crop health status in improving crop productivity by enhancing the understanding of plant–environment interactions. We review recent advances in analytical technologies for monitoring health status in plants based on multi-omics analyses and strategies for integrating heterogeneous datasets from multiple omics areas to identify informative factors associated with traits of interest. In addition, we showcase emerging phenomics techniques that enable the noninvasive and continuous monitoring of plant growth by various means, including three-dimensional phenotyping, plant root phenotyping, implantable/injectable sensors and affordable phenotyping devices. Finally, we present an integrated review of analytical technologies and applications for monitoring plant growth, developed across disciplines, such as plant science, data science and sensors and Internet-of-things technologies, to improve plant productivity.

DOI： 10.1093/pcp/pcaa064

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その他リンク： http://academic.oup.com/pcp/article-pdf/61/8/1408/33662755/pcaa064.pdf

Life-course monitoring of endogenous phytohormone levels under field conditions reveals diversity of physiological states among barley accessions. 査読

Takashi Hirayama, Daisuke Saisho, Takakazu Matsuura, Satoshi Okada, Kotaro Takahagi, Asaka Kanatani, Jun Ito, Hiroyuki Tsuji, Yoko Ikeda, Keiichi Mochida

Plant & cell physiology 61 ( 8 ) 1438 - 1448 2020年4月

担当区分：筆頭著者,　最終著者記述言語：英語掲載種別：研究論文（学術雑誌）

Agronomically important traits often develop during the later stages of crop growth as consequences of various plant-environment interactions. Therefore, the temporal physiological states that change and accumulate during the crop's life course can significantly affect the eventual phenotypic differences in agronomic traits among crop varieties. Thus, to improve productivity, it is important to elucidate the associations between temporal physiological responses during the growth of different crop varieties and their agronomic traits. However, data representing the dynamics and diversity of physiological states in plants grown under field conditions is sparse. In this study, we quantified the endogenous levels of five phytohormones-auxin, cytokinins, abscisic acid, jasmonate, and salicylic acid-in the leaves of eight diverse barley (Hordeum vulgare) accessions grown under field conditions sampled weekly over their life course to assess the ongoing fluctuations in hormone levels in the different accessions under field growth conditions. Notably, we observed enormous changes over time in the development-related plant hormones, such as auxin and cytokinins. Using 3' RNA-seq-based transcriptome data from the same samples, we investigated the expression of barley genes orthologous to known hormone-related genes of Arabidopsis throughout the life course. These data illustrated the dynamics and diversity of the physiological states of these field-grown barley accessions. Together our findings provide new insights into plant-environment interaction, highlighting that there is cultivar diversity in physiological responses during growth under field conditions.

DOI： 10.1093/pcp/pcaa046

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Hormonal and transcriptional analyses of fruit development and ripening in different varieties of black pepper (Piper nigrum)

Choy-Yuen Khew, Izumi C. Mori, Takakazu Matsuura, Takashi Hirayama, Jennifer Ann Harikrishna, Ee-Tiing Lau, Zehnder Jarroop Augustine Mercer, Siaw-San Hwang

Journal of Plant Research 133 ( 1 ) 73 - 94 2020年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Springer Science and Business Media {LLC}

Black pepper (Piper nigrum L.) is one of the most popular and oldest spices in the world with culinary uses and various pharmacological properties. In order to satisfy the growing worldwide demand for black pepper, improved productivity of pepper is highly desirable. A primary constraint in black pepper production is the non-synchronous nature of flower development and non-uniform fruit ripening within a spike. The uneven ripening of pepper berries results in a high labour requirement for selective harvesting contributes to low productivity and affects the quality of the pepper products. In Malaysia, there are a few recommended varieties for black pepper planting, each having some limitations in addition to the useful characteristics. Therefore, a comparative study of different black pepper varieties will provide a better understanding of the mechanisms regulates fruit development and ripening. Plant hormones are known to influence the fruit development process and their roles in black pepper flower and fruit development were inferred based on the probe-based gene expression analysis and the quantification of the multiple plant hormones using high-performance liquid chromatography coupled to tandem mass spectrometry (HPLC-MS/MS). In this study, jasmonic acid and salicylic acid were found to play roles in flowering and fruit setting, whereas auxin, gibberellin and cytokinins are important for fruit growth. Abscisic acid has positive role in fruit maturation and ripening in the development process. Distinct pattern of plant hormones related gene expression profiles with the hormones accumulation profiles suggested a complex network of regulation is involved in the signaling process and crosstalk between plant hormones was another layer of regulation in the black pepper fruit development mechanisms. The current study provides clues to help in elucidating the timing of the action of each specific plant hormone during fruit development and ripening which could be applied to enhance our ability to control the ripening process, leading to improving procedures for the production and post-harvest handling of pepper fruits.

DOI： 10.1007/s10265-019-01156-0

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Plant hormone profiling in developing seeds of common wheat (Triticum aestivum L.). 査読

Takakazu Matsuura, Izumi C Mori, Eiko Himi, Takashi Hirayama

Breeding science 69 ( 4 ) 601 - 610 2019年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

This study examined contents of nine plant hormones in developing seeds of field-grown wheat varieties (Triticum aestivum L.) with different seed dormancy using liquid chromatography-mass spectrometry. The varieties showed marked diversity in germination indices at 15°C and 20°C. Contents of the respective hormones in seeds showed a characteristic pattern during seed maturation from 30-day post anthesis to 60-day post anthesis. Principal component analysis and hierarchical clustering analysis revealed that plant hormone profiles were not correlated with dormancy levels, indicating that hormone contents were not associated with preharvest sprouting (PHS) susceptibility. Indole acetic acid (IAA) contents of mature seeds showed positive correlation with the germination index, but no other hormone. Response of embryo-half seeds to exogenous abscisic acid (ABA) indicates that ABA sensitivity is correlated with whole-seed germinability, which can be explained in part by genotypes of MOTHER OF FT AND TFL (MFT) allele modulating ABA signaling of wheat seeds. These results demonstrate that variation in wheat seed dormancy is attributable to ABA sensitivity of mature seeds, but not to ABA contents in developing seeds.

DOI： 10.1270/jsbbs.19030

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Regulation of the poly(A) status of mitochondrial mRNA by poly(A) specific ribonuclease is conserved among land plants. 査読

Kanazawa M, Ikeda Y, Nishihama R, Yamaoka S, Lee NH, Yamato KT, Kohchi T, Hirayama T

Plant & Cell Physiology 61 ( 3 ) 470 - 480 2019年11月

Transcriptome analysis and identification of a transcriptional regulatory network in the response to H<inf>2</inf>O<inf>2</inf> 査読

Ayaka Hieno, Hushna Ara Naznin, Keiko Inaba-Hasegawa, Tomoko Yokogawa, Natsuki Hayami, Mika Nomoto, Yasuomi Tada, Takashi Yokogawa, Mieko Higuchi-Takeuchi, Kosuke Hanada, Minami Matsui, Yoko Ikeda, Yuko Hojo, Takashi Hirayama, Kazutaka Kusunoki, Hiroyuki Koyama, Nobutaka Mitsuda, Yoshiharu Y. Yamamoto

Plant Physiology 180 ( 3 ) 1629 - 1646 2019年7月

Overexpression of Prunus DAM6 inhibits growth, represses bud break competency of dormant buds and delays bud outgrowth in apple plants 査読

Yamane, Hisayo, Wada, Masato, Honda, Chikako, Matsuura, Takakazu, Ikeda, Yoko, Hirayama, Takashi, Osako, Yutaro, Gao-Takai, Mei, Kojima, Mikiko, Sakakibara, Hitoshi, Tao, Ryutaro

PLOS ONE 14 ( 4 ) e0214788 2019年4月

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論文 - 平山 隆志

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論文 - 平山　隆志