Updated on 2024/10/17

写真a

 
NAGAI Keisuke
 
Organization
Bioscience and Biotechnology Center Assistant Professor
Graduate School
Graduate School of Bioagricultural Sciences
Title
Assistant Professor
Contact information
メールアドレス
External link

Degree 1

  1. 博士（農学） （ 2012.4   名古屋大学 ） 

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Research Areas 1

  1. Environmental Science/Agriculture Science / Science in plant genetics and breeding

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Current Research Project and SDGs 2

  1. 作物の耐水性メカニズムの解明と応用

  2. 作物の収量増加を目指した研究

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Research History 3

  1. Nagoya University   Bioscience and Biotechnology Center   Assistant Professor

    2019.4

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  2. Nagoya University   Bioscience and Biotechnology Center Development and Applied Division   Assistant Professor

    2017.4 - 2019.3

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  3. Nagoya University   Bioscience and Biotechnology Center Development and Applied Division   Assistant Professor

    2017.4 - 2019.3

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Professional Memberships 8

  1. 日本植物学会

  2. 日本育種学会

  3. 日本植物生理学会

  4. International society for plant low oxygen research

  5. 日本育種学会

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  6. 日本植物生理学会

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  7. 日本植物学会

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  8. International society for plant low oxygen research

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Awards 4

  1. 2021年度日本育種学会奨励賞

    2021   日本育種学会   イネ節間伸長の分子機構解明

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

  2. 2021年度日本育種学会奨励賞

    2021   日本育種学会   イネ節間伸長の分子機構解明

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

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  3. The 13th International society of plant anaerobiosis conference, Best poster award

    2019.6   International society of plant anaerobiosis   Antagonistic regulatory mechanism by accelerating and decelerating factors in internode elongation of rice for flooding adaptation.

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    Award type：Award from international society, conference, symposium, etc.  Country：Taiwan, Province of China

  4. 第126回講演会日本育種学会優秀発表賞

    2014.9   日本育種学会  

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    Country：Japan

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Papers 29

  1. Leaf Gas Film 1 promotes glycerol ester accumulation and formation of a tight root barrier to radial O2 loss in rice. International journal

    Juan de la Cruz Jiménez, Siti Noorrohmah, Kiran Suresh, Viktoria V Zeisler-Diehl, Lucas León Peralta Ogorek, Max Herzog, Elisa Pellegrini, Keisuke Nagai, Motoyuki Ashikari, Hirokazu Takahashi, Ole Pedersen, Lukas Schreiber, Mikio Nakazono

    Plant physiology     2024.8

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

    Rice (Oryza sativa L.) and many other wetland plants form an apoplastic barrier in the outer parts of the roots to restrict radial O2 loss to the rhizosphere during soil flooding. This barrier facilitates longitudinal internal O2 diffusion via gas-filled tissues from shoot to root apices, enabling root growth in anoxic soils. We tested the hypothesis that Leaf Gas Film 1 (LGF1), which influences leaf hydrophobicity in rice, plays a crucial role in tight outer apoplastic barriers formation in rice roots. We examined the roots of a rice mutant (dripping wet leaf 7, drp7) lacking functional LGF1, its wild type, and an LGF1 overexpression line for their capacity to develop outer apoplastic barriers that restrict radial O2 loss. We quantified the chemical composition of the outer part of the root and measured radial O2 diffusion from intact roots. The drp7 mutant exhibited a weak barrier to radial O2 loss compared to the wild type. However, introducing functional LGF1 into the mutant fully restored tight barrier function. The formation of a tight barrier to radial O2 loss was associated with increased glycerol ester levels in exodermal cells, rather than differences in total root suberization or lignification. These results demonstrate that, in addition to its role in leaf hydrophobicity regulation, LGF1 plays an important role in controlling the function of the outer apoplastic barriers in roots. Our study suggests that increased deposition of glycerol esters in the suberized root exodermis establishes a tight barrier to radial O2 loss in rice roots.

    DOI： 10.1093/plphys/kiae458

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  2. Regulator of Awn Elongation 3, an E3 ubiquitin ligase, is responsible for loss of awns during African rice domestication. International journal

    Kanako Bessho-Uehara, Kengo Masuda, Diane R Wang, Rosalyn B Angeles-Shim, Keisuke Obara, Keisuke Nagai, Riri Murase, Shin-Ichiro Aoki, Tomoyuki Furuta, Kotaro Miura, Jianzhong Wu, Yoshiyuki Yamagata, Hideshi Yasui, Michael B Kantar, Atsushi Yoshimura, Takumi Kamura, Susan R McCouch, Motoyuki Ashikari

    Proceedings of the National Academy of Sciences of the United States of America   Vol. 120 ( 4 ) page： e2207105120   2023.1

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

    Two species of rice have been independently domesticated from different ancestral wild species in Asia and Africa. Comparison of mutations that underlie phenotypic and physiological alterations associated with domestication traits in these species gives insights into the domestication history of rice in both regions. Asian cultivated rice, Oryza sativa, and African cultivated rice, Oryza glaberrima, have been modified and improved for common traits beneficial for humans, including erect plant architecture, nonshattering seeds, nonpigmented pericarp, and lack of awns. Independent mutations in orthologous genes associated with these traits have been documented in the two cultivated species. Contrary to this prevailing model, selection for awnlessness targeted different genes in O. sativa and O. glaberrima. We identify Regulator of Awn Elongation 3 (RAE3) a gene that encodes an E3 ubiquitin ligase and is responsible for the awnless phenotype only in O. glaberrima. A 48-bp deletion may disrupt the substrate recognition domain in RAE3 and diminish awn elongation. Sequencing analysis demonstrated low nucleotide diversity in a ~600-kb region around the derived rae3 allele on chromosome 6 in O. glaberrima compared with its wild progenitor. Identification of RAE3 sheds light on the molecular mechanism underlying awn development and provides an example of how selection on different genes can confer the same domestication phenotype in Asian and African rice.

    DOI： 10.1073/pnas.2207105120

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  3. Deep fluorescence observation in rice shoots via clearing technology Reviewed

      Vol. 184   2022.6

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  4. SNORKEL genes relating to flood tolerance were pseudogenized in normal cultivated rice Reviewed International journal

    Keisuke Nagai, Yusuke Kurokawa, Yoshinao Mori, Anzu Minami, Stefan Reuscher, Jianzhong Wu, Takashi Matsumoto, Motoyuki Ashikari

    Plants   Vol. 11 ( 3 ) page： 376 - 376   2022.1

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

    SNORKEL1 (SK1) and SNORKEL2 (SK2) are ethylene responsive factors that regulate the internode elongation of deepwater rice in response to submergence. We previously reported that normal cultivated rice lacks SK genes because the Chromosome 12 region containing SK genes was deleted from its genome. However, no study has analyzed how the genome defect occurred in that region by comparing normal cultivated rice and deepwater rice. In this study, comparison of the sequence of the end of Chromosome 12, which contains SK genes, between normal and deepwater rice showed that complicated genome changes such as insertions, deletions, inversions, substitutions, and translocation occurred frequently in this region. In addition to SK1 and SK2 of deepwater rice, gene prediction analysis identified four genes containing AP2/ERF domains in normal cultivated rice and six in deepwater rice; we called these genes SK-LIKE (SKL) genes. SKs and SKLs were present in close proximity to each other, and the SKLs in normal cultivated rice were in tandem. These predicted genes belong to the same AP2/ERF subfamily and were separated into four types: SK1, SK2, SKL3, and SKL4. Sequence comparison indicated that normal cultivated rice possesses a gene with high homology to SK2, which we named SKL1. However, none of the predicted SKLs except for SKL3s were expressed during submergence. Although SKL3s were expressed in both normal and deepwater rice, normal rice does not undergo internode elongation, suggesting that its expression does not contribute to internode elongation. Plants overexpressing SKL1, which showed the most homology to SK2, underwent internode elongation similar to plants overexpressing SK1 and SK2 under normal growth conditions. A yeast one-hybrid assay showed that the C-end of SKL1 has transcription activity, as do the C-ends of SK1 and SK2. Our results suggested that SKLs were derived via gene duplication, but were not expressed and pseudogenized in normal cultivated rice during sequence evolution.

    DOI： 10.3390/plants11030376

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  5. Noninvasive imaging of hollow structures and gas movement revealed the gas partial-pressure-gradient-driven long-distance gas movement in the aerenchyma along the leaf blade to submerged organs in rice. Reviewed International journal

    Yong-Gen Yin, Yoshinao Mori, Nobuo Suzui, Keisuke Kurita, Mitsutaka Yamaguchi, Yuta Miyoshi, Yuto Nagao, Motoyuki Ashikari, Keisuke Nagai, Naoki Kawachi

    The New phytologist   Vol. 232 ( 5 ) page： 1974 - 1984   2021.9

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

    Rice (Oryza sativa) plants have porous or hollow organs consisting of aerenchyma, which is presumed to function as a low-resistance diffusion pathway for air to travel from the foliage above the water to submerged organs. However, gas movement in rice plants has yet to be visualized in real time. In this study involving partially submerged rice plants, the leaves emerging from the water were fed nitrogen-13-labeled nitrogen ([13 N]N2 ) tracer gas, and the gas movement downward along the leaf blade, leaf sheath, and internode over time was monitored. The [13 N]N2 gas arrived at the bottom of the plant within 10 min, which was 20 min earlier than carbon-11 photoassimilates. The [13 N]N2 gas movement was presumably mediated by diffusion along the aerenchyma network from the leaf blade to the root via nodes functioning as junctions, which were detected by X-ray computed tomography. These findings imply the diffusion of gas along the aerenchyma, which does not consume energy, has enabled plants to adapt to aquatic environments. Additionally, there were no major differences in [13 N]N2 gas movement between paddy rice and deepwater rice plants, indicative of a common aeration mechanism in the two varieties, despite the difference in their response to flooding.

    DOI： 10.1111/nph.17726

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  6. Antagonistic regulation of the gibberellic acid response during stem growth in rice

    Nagai Keisuke, Mori Yoshinao, Ishikawa Shin, Furuta Tomoyuki, Gamuyao Rico, Niimi Yoko, Hobo Tokunori, Fukuda Moyuri, Kojima Mikiko, Takebayashi Yumiko, Fukushima Atsushi, Himuro Yasuyo, Kobayashi Masatomo, Ackley Wataru, Hisano Hiroshi, Sato Kazuhiro, Yoshida Aya, Wu Jianzhong, Sakakibara Hitoshi, Sato Yutaka, Tsuji Hiroyuki, Akagi Takashi, Ashikari Motoyuki

    NATURE   Vol. 584 ( 7819 ) page： 109 - +   2020.8

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  7. Metabolite and Phytohormone Profiling Illustrates Metabolic Reprogramming as an Escape Strategy of Deepwater Rice during Partially Submerged Stress

    Fukushima Atsushi, Kuroha Takeshi, Nagai Keisuke, Hattori Yoko, Kobayashi Makoto, Nishizawa Tomoko, Kojima Mikiko, Utsumi Yoshinori, Oikawa Akira, Seki Motoaki, Sakakibara Hitoshi, Saito Kazuki, Ashikari Motoyuki, Kusano Miyako

    METABOLITES   Vol. 10 ( 2 )   2020.2

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  8. Evaluation of backcrossed pyramiding lines of the yield-related gene and the bacterial leaf blight resistant genes Reviewed

    Shuto Yamada, Yusuke Kurokawa, Keisuke Nagai, Rosalyn B Angeles-Shim, Hideshi Yasui, Naruto Furuya, Atsushi Yoshimura, Kazuyuki Doi, Motoyuki Ashikari, Hidehiko Sunohara

    J Internatio. Coop. Agri. Dev.   Vol. 18   page： 18 - 28   2020

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  9. Diel O-2 Dynamics in Partially and Completely Submerged Deepwater Rice: Leaf Gas Films Enhance Internodal O-2 Status, Influence Gene Expression and Accelerate Stem Elongation for 'Snorkelling' during Submergence Reviewed

    Mori Yoshinao, Kurokawa Yusuke, Koike Masaya, Malik Al Imran, Colmer Timothy David, Ashikari Motoyuki, Pedersen Ole, Nagai Keisuke

    PLANT AND CELL PHYSIOLOGY   Vol. 60 ( 5 ) page： 973-985   2019.5

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

    DOI： 10.1093/pcp/pcz009

    Web of Science

  10. Ethylene-gibberellin signaling underlies adaptation of rice to periodic flooding

    Kuroh Takeshi, Nagai Keisuke, Gamuyao Rico, Wang Diane R., Furuta Tomoyuki, Nakamori Masanari, Kitaoka Takuya, Adachi Keita, Minami Anzu, Mori Yoshinao, Mashiguchi Kiyoshi, Seto Yoshiya, Yamaguchi Shinjiro, Kojima Mikiko, Sakakibara Hitoshi, Wu Jianzhong, Ebana Kaworu, Mitsuda Nobutaka, Ohme-Takagi Masaru, Yanagisawa Shuichi, Yamasaki Masanori, Yokoyama Ryusuke, Nishitani Kazuhiko, Mochizuki Toshihiro, Tamiya Gen, McCouch Susan R., Ashikari Motoyuki

    SCIENCE   Vol. 361 ( 6398 ) page： 181-185   2018.7

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

    DOI： 10.1126/science.aat1577

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  11. Rice leaf hydrophobicity and gas films are conferred by a wax synthesis gene (LGF1) and contribute to flood tolerance

    Kurokawa Yusuke, Nagai Keisuke, Phung Danh Huan, Shimazaki Kousuke, Qu Huangqi, Mori Yoshinao, Toda Yosuke, Kuroha Takeshi, Hayashi Nagao, Aiga Saori, Itoh Jun-ichi, Yoshimura Atsushi, Sasaki-Sekimoto Yuko, Ohta Hiroyuki, Shimojima Mie, Malik Al Imran, Pedersen Ole, Colmer Timothy David, Ashikari Motoyuki

    NEW PHYTOLOGIST   Vol. 218 ( 4 ) page： 1558-1569   2018.6

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

    DOI： 10.1111/nph.15070

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  12. Time-Course Transcriptomics Analysis Reveals Key Responses of Submerged Deepwater Rice to Flooding

    Minami Anzu, Yano Kenji, Gamuyao Rico, Nagai Keisuke, Kuroha Takeshi, Ayano Madoka, Nakamori Masanari, Koike Masaya, Kondo Yuma, Niimi Yoko, Kuwata Keiko, Suzuki Takamasa, Higashiyama Tetsuya, Takebayashi Yumiko, Kojima Mikiko, Sakakibara Hitoshi, Toyoda Atsushi, Fujiyama Asao, Kurata Nori, Ashikari Motoyuki, Reuscher Stefan

    PLANT PHYSIOLOGY   Vol. 176 ( 4 ) page： 3081-3102   2018.4

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

    DOI： 10.1104/pp.17.00858

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  13. Breeding applications and molecular basis of semi-dwarfism in rice Reviewed

    Keisuke Nagai, Ko Hirano, Rosalyn B. Angeles-Shim, Motoyuki Ashikari

    Rice Genomics, Genetics and Breeding     page： 155 - 176   2018.3

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    Language：English   Publishing type：Part of collection (book)   Publisher：Springer Singapore  

    The green revolution in rice was defined by an unprecedented increase in rice production that saved the world from an impending famine in the 1960s. Driving this revolution was the semi-dwarf 1 (sd1) gene conferring the semidwarf phenotype to the rice plant. The shorter stature conferred by sd1 gives the plants resistance to lodging even under heavy doses of nitrogen fertilizer. IR8 carrying sd1, also known as the miracle rice, was the first high-yielding rice variety that came out as a result of intensive research and breeding efforts that capitalize on the use of the semi-dwarf trait to significantly improve rice yield. Although the rice green revolution gene has been used for breeding for decades, the sd1 gene was not identified for a long time. Advancement of rice genomics facilitated the discovery that SD1 encodes the GA biosynthesis gene, GA20ox2. Genome sequencing revealed that several of the varieties used as donor lines in breeding for the semidwarf phenotype in rice possess different alleles of sd1. Apart from breeding applications, dwarf mutants have also been instrumental in uncovering the molecular mechanisms underlying gibberellin biosynthesis and signaling.

    DOI： 10.1007/978-981-10-7461-5_9

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  14. eQTLs Regulating Transcript Variations Associated with Rapid Internode Elongation in Deepwater Rice

    Kuroha Takeshi, Nagai Keisuke, Kurokawa Yusuke, Nagamura Yoshiaki, Kusano Miyako, Yasui Hideshi, Ashikari Motoyuki, Fukushima Atsushi

    FRONTIERS IN PLANT SCIENCE   Vol. 8   2017.10

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

    DOI： 10.3389/fpls.2017.01753

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  15. Hormone Distribution and Transcriptome Profiles in Bamboo Shoots Provide Insights on Bamboo Stem Emergence and Growth

    Gamuyao Rico, Nagai Keisuke, Ayano Madoka, Mori Yoshinao, Minami Anzu, Kojima Mikiko, Suzuki Takamasa, Sakakibara Hitoshi, Higashiyama Tetsuya, Ashikari Motoyuki, Reuscher Stefan

    PLANT AND CELL PHYSIOLOGY   Vol. 58 ( 4 ) page： 702-716   2017.4

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

    DOI： 10.1093/pcp/pcx023

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  16. A new outlook on sporadic flowering of bamboo

    Gamuyao Rico, Nagai Keisuke, Ashikari Motoyuki, Reuscher Stefan

    PLANT SIGNALING & BEHAVIOR   Vol. 12 ( 7 )   2017

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

    DOI： 10.1080/15592324.2017.1343780

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  17. Construction of a versatile SNP array for pyramiding useful genes of rice Reviewed International coauthorship

    Yusuke Kurokawa, Tomonori Noda, Yoshiyuki Yamagata, Rosalyn Angeles-Shim, Hidehiko Sunohara, Kanako Uehara, Tomoyuki Furuta, Keisuke Nagai, Kshirod Kumar Jena, Hideshi Yasui, Atsushi Yoshimura, Motoyuki Ashikari, Kazuyuki Doi

      Vol. 242   page： 131 - 139   2016

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

    DOI： doi.org/10.1016/j.plantsci.2015.09.008

  18. Loss of function at RAE2, a previously unidentified EPFL, is required for awnlessness in cultivated Asian rice Reviewed

    Kanako Bessho-Uehara, Diane R. Wang, Tomoyuki Furuta, Anzu Minami, Keisuke Nagai, Rico Gamuyao, Kenji Asano, Rosalyn B. Angeles-Shim, Yoshihiro Shimizu, Madoka Ayano, Norio Komeda, Kazuyuki Doi, Kotaro Miura, Yosuke Toda, Toshinori Kinoshita, Satohiro Okuda, Tetsuya Higashiyama, Mika Nomoto, Yasuomi Tada, Hidefumi Shinohara, Yoshikatsu Matsubayashi, Anthony Greenberg, Jianzhong Wu, Hideshi Yasui, Atsushi Yoshimura, Hitoshi Mori, Susan R. McCouch, and Motoyuki Ashikari

    Proc. Natl. Acad. Sci. USA   Vol. 113 ( 32 ) page： 8969 - 8974   2016

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

    DOI： doi.org/10.1073/pnas.1604849113

  19. Development of chromosome segment substitution lines harboring Oryza nivara genomic segments in Koshihikari and evaluation of yield-related traits Reviewed International coauthorship

      Vol. 66 ( 5 ) page： 845 - 850   2016

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

    DOI： doi.org/10.1270/jsbbs.16131

  20. Convergent loss of awn in two cultivated rice species Oryza sativa and Oryza glaberrima is caused by mutations in different loci

    Tomoyuki Furuta, Norio Komeda, Kenji Asano, Kanako Uehara, Rico Gamuyao, Rosalyn B. Shim-Angeles, Keisuke Nagai, Kazuyuki Doi, Diane R. Wang, Hideshi Yasui, Atsushi Yoshimura, Jianzhong Wu, Susan R. McCouch and Motoyuki Ashikari

    Genes Genomes Genetics     2015.9

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

    DOI： 10.1534/g3.115.020834

  21. Rare allele of a previously unidentified histone H4 acetyltransferase enhances grain weight, yield, acetyltransferase enhances grain weight, yield, and plant biomass in rice

    Xian Jun Songa, Takehi Kuroha, Madoka Ayano, Tomoyuki Furuta, Keisuke Nagai, Norio Komeda, Shuhei Segami, Kotaro Miura, Daisuke Ogawa, Takumi Kamura, Takamasa Suzuki, Tetsuya Higashiyamad, Masanori Yamasaki, Hitoshi Mori, Yoshiaki Inukai, Jianzhong Wu, Hidemi Kitano, Hitoshi Sakakibara, Steven E. Jacobsen, and Motoyuki Ashikaria

    PNAS     2015.1

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

    DOI： 10.1073/pnas.1421127112

  22. QTL analysis of internode elongation in response to gibberellin in deepwater rice.

    Nagai K, Kondo Y, Kitaoka T, Noda T, Kuroha T, Angeles-Shim RB, Yasui H, Yoshimura A, Ashikari M.

    AoB Plants     2014.6

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

    DOI： 10.1093/aobpla/plu028

  23. Gibberellin biosynthesis and signal transduction is essential for internode elongation in deepwater rice.

    Ayano M, Kani T, Kojima M, Sakakibara H, Kitaoka T, Kuroha T, Angeles-Shim RB, Kitano H, Nagai K, Ashikari M.

    Plant Cell Environment     2014.5

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

    DOI： 10.1111/pce.12377

  24. Two novel QTLs regulate internode elongation in deepwater rice during the early vegetative stage.

    Nagai K, Kuroha T, Ayano M, Kurokawa Y, Angeles-Shim RB, Shim JH, Yasui H, Yoshimura A, Ashikari M.

    Breeding Science     2012.6

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

    DOI： doi: 10.1270/jsbbs.62.178

  25. イネの洪水における異なる2つの生存戦略

    永井 啓祐, 服部 洋子, 芦苅 基行

    化学と生物   Vol. 49 ( 4 ) page： 222-224   2012.3

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    Language：Japanese  

  26. Rice growth adapting to deepwater.

    Hattori Y, Nagai K, Ashikari M.

    Curr Opin Plant Biol.     2011.2

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    Language：English  

    DOI： 10.1016/j.pbi.2010.09.008

  27. Stunt or elongate? Two opposite strategies by which rice adapts to floods

    Nagai K, Hattori Y, Ashikari M.

    J Plant Res     2010

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    Language：English  

    DOI： 10.1007/s10265-010-0332-7.

  28. The ethylene response factors SNORKEL1 and SNORKEL2 allow rice to adapt to deep water

    Hattori Y, Nagai K, Furukawa S, Song XJ, Kawano R, Sakakibara H, Wu J, Matsumoto T, Yoshimura A, Kitano H, Matsuoka M, Mori H, Ashikari M.

    Nature     2009

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

    DOI： 10.1038/nature08258

  29. Mapping of three QTLs that regulate internode elongation in deepwater rice

    Yoko Hattori, Keisuke Nagai, Hitoshi Mori, Hidemi Kitano, Makoto Matsuoka, Motoyuki Ashikari

    Breeding Science     2008

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

    DOI： 10.1270/jsbbs.58.39

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MISC 12

  1. Molecular mechanism of internode elongation in rice Invited Reviewed

    Keisuke Nagai, Motoyuki Ashikari

    Breeding Science     2023.6

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    Authorship：Lead author,　Corresponding author   Language：English  

    DOI： https://doi.org/10.1270/jsbbs.22086

  2. Can the wild perennial, rhizomatous rice species Oryza longistaminata be a candidate for de novo domestication? Reviewed International coauthorship

    Shuai Tong, Motoyuki Ashikari, Keisuke Nagai and Ole Pedersen

    Rice     2023.3

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    Authorship：Corresponding author   Language：English  

    DOI： https://doi.org/10.1186/s12284-023-00630-7

  3. Can the wild perennial, rhizomatous rice species Oryza longistaminata be a candidate for de novo domestication? Reviewed International coauthorship

    Shuai Tong, Motoyuki Ashikari, Keisuke Nagai, Ole Pedersen

    Rice     2023.3

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    Authorship：Corresponding author   Language：English  

    DOI： 10.1186/s12284-023-00630-7

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  4. Molecular mechanism of internode elongation in rice

    Keisuke Nagai, Motoyuki Ashikari

    Breeding Science   Vol. 73 ( 2 ) page： 108 - 116   2023

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    Authorship：Lead author,　Corresponding author   Publisher：Japanese Society of Breeding  

    DOI： 10.1270/jsbbs.22086

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  5. Elucidation of molecular mechanism of internode elongation in rice

    Nagai Keisuke

    Breeding Research   Vol. advpub   2022

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    Language：Japanese   Publisher：Japanese Society of Breeding  

    DOI： 10.1270/jsbbr.22j09

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  6. イネの茎伸長による洪水耐性機構の分子メカニズム : 浮イネの茎伸長—Molecular Mechanism of Rice Stem Elongation against a Periodic Flood : Stem Elongation in Deepwater Rice

    芦苅 基行, 永井 啓祐

    化学と生物 : 日本農芸化学会会誌 : 生命・食・環境 / 日本農芸化学会 編   Vol. 59 ( 12 ) page： 586 - 597   2021.12

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    Language：Japanese   Publisher：日本農芸化学会 ; 1962-  

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  7. イネの茎伸長の開始を制御する2つのスイッチ因子の発見と農業的応用—Discovery of two switch factors controlling the initiation of internode elongation in rice and agronomic application—特集 最近の農林水産研究成果トピックス

    永井 啓祐

    JATAFFジャーナル = JATAFF journal : 農林水産技術   Vol. 9 ( 10 ) page： 7 - 11   2021.10

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    Language：Japanese   Publisher：農林水産・食品産業技術振興協会  

    CiNii Books

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  8. イネの茎伸長を制御するアクセル因子とブレーキ因子の発見

    永井 啓祐, 芦苅 基行

    バイオサイエンスとインダストリー / バイオサイエンスとインダストリー編集委員会 編   Vol. 79 ( 1 ) page： 8 - 11   2021

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    Language：Japanese   Publisher：バイオインダストリー協会  

    CiNii Books

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  9. 特集記事 2017年第61回シンポジウム（シンポジウム・ワークショップ）報告:育種学と農学のこれからを考える34-形態をキーワードに育種を再考する- Invited Reviewed

    別所–上原奏子, 吉津祐貴, 斉藤希, 坂本莉沙, 矢部志央理, 山地直樹, 永井啓祐

    育種学研究   Vol. 20 ( 1 ) page： 69 - 75   2018

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  10. 浮イネ生存戦略におけるジベレリン応答性因子の探索 Reviewed

    永井啓祐, 黒羽剛, 芦苅基行

    化学と生物   Vol. 54   page： 198 - 204   2016

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    Authorship：Lead author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    DOI： doi.org/10.1271/kagakutoseibutsu.54.198

  11. ゲノム情報を利用したイネの育種

    永井啓祐, 黒川裕介, 土井一行, 芦苅基行

    国際農林業協力   Vol. 38   page： 2 - 11   2015

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    Authorship：Lead author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)  

  12. イネの洪水における異なる２つの生存戦略 エチレン情報伝達を介した深水洪水と冠水洪水に対する耐性機構

    永井 啓祐, 服部 洋子, 芦苅 基行

    化学と生物     2011.4

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    Authorship：Lead author  

    DOI： https://doi.org/10.1271/kagakutoseibutsu.49.222

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To the head of MISC.▲

Presentations 43

  1. Elucidation of water tolerant mechanism by gas permeability in rice node International conference

    Keisuke Nagai

    The 14th International Society of Plant Anaerobiosis Conference  2022.9.28  International Society of Plant Anaerobiosis

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    Event date： 2022.9

    Language：English   Presentation type：Oral presentation (general)  

    Country：Germany  

  2. Elucidation of water tolerant mechanism by gas permeability in rice node International conference

    Keisuke Nagai

    The 14th International Society of Plant Anaerobiosis Conference  2022.9.28  International Society of Plant Anaerobiosis

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    Event date： 2022.9

    Language：English   Presentation type：Oral presentation (general)  

    Country：Germany  

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  3. イネ節間伸長の分子機構の解明 Invited

    永井啓祐

    日本育種学会 第141回講演会  2022.3.20 

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    Event date： 2022.3

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

  4. 節間伸長促進因子SNORKEL-LIKEsの偽遺伝子化による水田イネ短稈化機構の解明

    永井啓祐、芦苅基行

    日本育種学会 第141回講演会  2022.3.20 

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    Event date： 2022.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  5. イネ節間におけるジベレリンに応答した拮抗的伸長制御機構

    永井啓祐

    日本育種学会第139回講演会  2021.3.20 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  6. イネ節間におけるジベレリンに応答した拮抗的伸長制御機構

    永井啓祐

    日本育種学会第139回講演会  2021.3.20 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Oral presentation (general)  

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  7. The regulation of phase transition in rice internode

    2021.3.15 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  8. The regulation of phase transition in rice internode

    2021.3.15 

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    Event date： 2021.3

    Language：Japanese   Presentation type：Oral presentation (general)  

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  9. イネ節間伸長の開始制御機構の解明

    永井啓祐

    日本育種学会第138回講演会  2020.10.10 

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    Event date： 2020.10

    Language：Japanese   Presentation type：Oral presentation (general)  

  10. イネ節間伸長の開始制御機構の解明

    永井啓祐

    日本育種学会第138回講演会  2020.10.10 

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    Event date： 2020.10

    Language：Japanese   Presentation type：Oral presentation (general)  

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  11. ACE1とDEC１によるイネ節間伸長のantagonistic制御2

    永井啓祐

    日本植物学会第84回大会  2020.9.19 

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    Event date： 2020.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  12. ACE1とDEC１によるイネ節間伸長のantagonistic制御2

    永井啓祐

    日本植物学会第84回大会  2020.9.19 

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    Event date： 2020.9

    Language：Japanese   Presentation type：Oral presentation (general)  

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  13. イネ節間伸長における拮抗的制御機構

    永井啓祐

    第61回日本植物生理学会年会  2020.3.20 

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    Event date： 2020.3

    Language：Japanese   Presentation type：Symposium, workshop panel (public)  

  14. イネ節間伸長における拮抗的制御機構

    永井啓祐

    第61回日本植物生理学会年会  2020.3.20 

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    Event date： 2020.3

    Language：Japanese   Presentation type：Symposium, workshop panel (public)  

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  15. Internode elongation for adaptation to flooding environment International conference

    Keisuke Nagai

    Seminar of research review, JICA RGBM  2019.11.20 

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    Event date： 2019.11

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

  16. Internode elongation for adaptation to flooding environment International conference

    Keisuke Nagai

    Seminar of research review, JICA RGBM  2019.11.20 

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    Event date： 2019.11

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

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  17. Antagonistic regulatory mechanism by accelerating and decelerating factors in internode elongation of rice for flooding adaptation. International conference

    Keisuke Nagai

    The 13th International Society of Plant Anaerobiosis Conference  2019.6.3 

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    Event date： 2019.6

    Language：English   Presentation type：Oral presentation (general)  

  18. Antagonistic regulatory mechanism by accelerating and decelerating factors in internode elongation of rice for flooding adaptation. International conference

    Keisuke Nagai

    The 13th International Society of Plant Anaerobiosis Conference  2019.6.5 

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    Event date： 2019.6

    Language：English   Presentation type：Poster presentation  

  19. Antagonistic regulatory mechanism by accelerating and decelerating factors in internode elongation of rice for flooding adaptation. International conference

    Keisuke Nagai

    The 13th International Society of Plant Anaerobiosis Conference  2019.6.5 

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    Event date： 2019.6

    Language：English   Presentation type：Poster presentation  

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  20. Antagonistic regulatory mechanism by accelerating and decelerating factors in internode elongation of rice for flooding adaptation. International conference

    Keisuke Nagai

    The 13th International Society of Plant Anaerobiosis Conference  2019.6.3 

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    Event date： 2019.6

    Language：English   Presentation type：Oral presentation (general)  

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  21. イネ節の効率的な気体透過性による耐水性機構の解明 Invited

    永井啓祐

    第34回資源植物科学シンポジウム、第10回植物ストレス科学研究シンポジウム  2018.3.5 

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    Event date： 2018.3

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

  22. イネ節の効率的な気体透過性による耐水性機構の解明 Invited

    永井啓祐

    第34回資源植物科学シンポジウム、第10回植物ストレス科学研究シンポジウム  2018.3.5 

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    Event date： 2018.3

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  23. イネがイネであるために〜茎の形態から〜

    永井啓祐

    第3回農学中手の会  2017.12.1 

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    Event date： 2017.12

    Language：Japanese  

  24. イネがイネであるために〜茎の形態から〜

    永井啓祐

    第3回農学中手の会  2017.12.1 

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    Event date： 2017.12

    Language：Japanese  

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  25. イネが水田で生きるためには〜コンペイ糖状細胞の発見とガス交換の仕組み〜

    永井啓祐

    2017年遺伝学研究所研究会「イネ分子遺伝学の方向性」  2017.11.24 

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    Event date： 2017.11

    Language：Japanese  

  26. イネが水田で生きるためには〜コンペイ糖状細胞の発見とガス交換の仕組み〜

    永井啓祐

    2017年遺伝学研究所研究会「イネ分子遺伝学の方向性」  2017.11.24 

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    Event date： 2017.11

    Language：Japanese  

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  27. Oxygen transport through rice node tissue International conference

    Keisuke Nagai

    IGER symposium on Long0distance signaling in plant  2017.11.21 

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    Event date： 2017.11

    Language：English   Presentation type：Poster presentation  

  28. Oxygen transport through rice node tissue International conference

    Keisuke Nagai

    IGER symposium on Long0distance signaling in plant  2017.11.21 

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    Event date： 2017.11

    Language：English   Presentation type：Poster presentation  

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  29. 植物が水辺で生きる Invited

    永井啓祐

    日本育種学会第132回講演会  2017.10.7 

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    Event date： 2017.10

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

  30. 植物が水辺で生きる Invited

    永井啓祐

    日本育種学会第132回講演会  2017.10.7 

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    Event date： 2017.10

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  31. Anatomic analysis of aerenchyma in grasses International conference

    Keisuke Nagai

    12th international society for plant anaerobiosis  2016.9.5 

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    Event date： 2016.9

    Language：English   Presentation type：Poster presentation  

  32. イネ科植物における節間通気組織の形態学的解析

    永井啓祐

    イネ遺伝学・分子生物学ワークショップ  2016.7.4 

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    Event date： 2016.7

    Language：Japanese   Presentation type：Poster presentation  

  33. Elucidating the molecular mechanism of cell propagation and cell elongation at the intercalary meristem in rice

    Keisuke Nagai

    2015.12.4 

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    Event date： 2015.12

    Language：English   Presentation type：Symposium, workshop panel (public)  

  34. A novel gibberellin response gene triggers internode elongation in deepwater rice

    Keisuke Nagai

    2015.3.15 

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    Event date： 2015.3

    Language：English   Presentation type：Symposium, workshop panel (public)  

  35. 新規ヒストンH4アセチルトランスフェラーゼによる転写制御を介したイネ有用農業形質の制御機構の解明

    永井啓祐

    日本育種学会 第126回講演会  2014.9.26 

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    Event date： 2014.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  36. イネにおけるジベレリン応答性に関するQTL解析

    永井啓祐

    日本育種学会第125回講演会  2014.3.22 

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    Event date： 2014.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  37. Gibberellin responsive gene regulates the lowest elongated internode in deepwater rice International conference

    Keisuke Nagai

    11th conference of the international society for plant anaerobiosis  2013.10.6 

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    Event date： 2013.10

    Language：English   Presentation type：Poster presentation  

  38. SNORKEL genes regulating deepwater response are directly targeted by EIL1 in deepwater rice International conference

    2013.3.18 

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    Event date： 2013.3

    Language：English   Presentation type：Poster presentation  

  39. 浮イネ遺伝子Snorkel以外の新規浮イネ性制御遺伝子の遺伝学的解析

    永井啓祐

    第５１回日本植物生理学会年会  2010.3.18 

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    Event date： 2010.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  40. 不良環境下における浮イネの環境適応性の遺伝学的解析

    永井啓祐

    日本育種学会第116回講演会  2009.9.25 

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    Event date： 2009.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  41. 浮イネ遺伝子Snorkel1およびSnorkel2の単離とその機能解析

    永井啓祐

    第50回日本植物生理学会年会  2009.3.23 

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    Event date： 2009.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  42. イネ節間伸長の分子機構の解明 Invited

    永井啓祐

    日本育種学会 第141回講演会  2022.3.20 

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    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  43. 節間伸長促進因子SNORKEL-LIKEsの偽遺伝子化による水田イネ短稈化機構の解明

    永井啓祐, 芦苅基行

    日本育種学会 第141回講演会  2022.3.20  日本育種学会

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    Language：Japanese   Presentation type：Oral presentation (general)  

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Research Project for Joint Research, Competitive Funding, etc. 1

  1. アフリカ栽培イネ Oryza glaberrima の洪水耐性機構の解明

    令和5年度岡山大学資源植物科学研究所共同研究 

To the head of Research Project for Joint Research, Competitive Funding, etc..▲

KAKENHI (Grants-in-Aid for Scientific Research) 8

  1. 有用遺伝子探索を革新するオミクスベースクローニング法の実証

    2023.4 - 2027.3

    日本学術振興会  科学研究費助成事業   基盤研究（B）

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    Authorship：Coinvestigator(s) 

  2. 有用遺伝子探索を革新するオミクスベースクローニング法の実証

    2023.4 - 2027.3

    日本学術振興会  科学研究費助成事業  基盤研究（B）

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    Authorship：Coinvestigator(s) 

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  3. イネの茎をモデルとした新規作物耐水性機構の解明

    2023.4 - 2026.3

    国立研究開発法人 科学技術振興機構  創発的研究支援事業 

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    Authorship：Principal investigator 

  4. イネの茎をモデルとした新規作物耐水性機構の解明

    2023.4 - 2026.3

    国立研究開発法人 科学技術振興機構  創発的研究支援事業 

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    Authorship：Principal investigator 

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  5. イネの茎における新規耐水性機構の解明と育種応用に向けた分子基盤の構築

    Grant number：22H02309  2022.4 - 2026.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    Authorship：Principal investigator 

  6. Elucidation of molecular mechanism of water stress tolerance in rice internode.

    Grant number：19K15815  2019.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists  Grant-in-Aid for Early-Career Scientists

    Keisuke Nagai

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    Normal paddy rice drowns due to oxygen deprivation during flood. On the other hand, deepwater rice can survive in flooding environment because its internodes elongate rapidly, allowing the leaf tips to rise to the water surface and take up oxygen during flooding. Although it has been known that gibberellin, a plant hormone, is involved in elongation of deepwater rice, the detailed molecular mechanism has not yet been elucidated. In this study, I found two genes that regulate cell division in the internodes in response to gibberellin and elucidated the regulatory mechanism of internode elongation in rice by gibberellin.

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  7. Elucidation of molecular mechanism of flood tolerance by internode elongation in deepwater rice

    Grant number：16K18565  2016.4 - 2019.3

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

    Nagai Keisuke

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    Under flooding condition, normal paddy rice cannot grow due to lack of oxygen. On the other hand, deepwater rice put out the tip of the leaves to water surface by inducing rapid internode elongation with the rise of water level under flood condition, and prevents poor growth due to oxygen deficiency. In addition, floods have occurred in various parts of the world due to the global environmental change in recent years, and agricultural losses are becoming serious. Therefore, I aimed to elucidate the molecular mechanism of internode elongation of deepwater rice, and to apply the knowledges to the breeding of flood tolerant rice.

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  8. アフリカ栽培イネ Oryza glaberrima の洪水耐性機構の解明

    令和5年度岡山大学資源植物科学研究所共同研究 

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To the head of KAKENHI (Grants-in-Aid for Scientific Research).▲
 

Teaching Experience (On-campus) 8

  1. 農学セミナー2

    2023

  2. 生物学実験

    2023

  3. 生物学実験

    2022

  4. 農学セミナー2

    2022

  5. 生物学実験

    2021

  6. 農学セミナー2

    2021

  7. 生物学実験

    2020

  8. 農学セミナー2

    2020

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To the head of Teaching Experience (On-campus).▲

Teaching Experience (Off-campus) 10

  1. 生物学実験

    2023 （Nagoya University）

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    Level：Undergraduate (liberal arts) 

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  2. 農学セミナー2

    2023 （Nagoya University）

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    Level：Undergraduate (specialized) 

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  3. 生活の中の科学

    2022.4 - 2022.7 （Nagoya Keizai University）

  4. 生活の中の科学

    2022.4 - 2022.7 （Nagoya Keizai University）

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  5. 生物学実験

    2022 （Nagoya University）

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    Level：Undergraduate (liberal arts) 

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  6. 農学セミナー2

    2022 （Nagoya University）

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    Level：Undergraduate (specialized) 

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  7. 生物学実験

    2021 （Nagoya University）

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    Level：Undergraduate (liberal arts) 

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  8. 農学セミナー2

    2021 （Nagoya University）

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    Level：Undergraduate (specialized) 

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  9. 生物学実験

    2020 （Nagoya University）

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    Level：Undergraduate (specialized) 

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  10. 農学セミナー2

    2020 （Nagoya University）

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    Level：Undergraduate (specialized) 

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To the head of Teaching Experience (Off-campus).▲