Researchers Information
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Research Activities

Books, Original Papers & Review Papers
Name
HAYAKAWA Toshihiko
Affiliation
Graduate School of Agriculture
Division of Life Science
Department of Applied Plant Science
Laboratory of Plant Cell Biochemistry
Assigned Class
Graduate School of Agriculture
Division of Life Science
Department of Applied Plant Science
Laboratory of Plant Cell Biochemistry

Title
Associate Professor
Date of Birth
1965.04
Academic Degree
Doctor of Philosophy (Agriculture)
Research Fields
  • Plant physiology/molecule
  • Plant nutrient science/soil studies
  • Applied molecular cell biology
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Research Subjects
  • Molecular physiological studies on the mechanism of signal transduction for expression of nitrogen-assimilatory genes in higher plants.(1999-)
  • Molecular physiological studies on the mechanism for expression of nitrogen-assimilatory genes in higher plants.(1993-1999)
  • Molecular physiological studies on the NADH-dependent glutamate synthase in rice plants.(1992-1993)
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Keywords
plant, nitrogen metabolism, nitrogen remobilization, gene expression, signal transduction, Nitrogen/carbon signal
Academic Society Membership
  • The Japanese Society of Plant Physiologists
  • The Japanese Society of Soil Science and Plant Nutrition
  • The Japanese Society of Plant Cell and Molecular Biology
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Activity of Academic Society (Post)
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    Books

    Nitrogen Assimilation in Plants..[Research Signpost, Kerala, India.,(2010)]Soichi Kojima*, Tosihiko Hayakawa, Nicolaus von Wirén, Tomoyuki Yamaya*. Edited by Takuji Ohyama and Kuni Sueyoshi.
    ISBN978-81-308-0406-4


    Improvement of productivity and quality of rice in relation to nutrition and physiology..[Hakuyusha Co., LTD,(2006)]Amane Makino, Toshihiko Hayakawa*, Tomoyuki Yamaya, Jian Feng Ma, Ho Ando, Motohiko Kondo, Satoshi Masaki, Yoshihiro Kaneta, Tadahiko Mae, Hiroaki Hayashi, Takuji Ohyama


    The Plant Cell Technology Series, an extra issue of The Cell Technology 11. Responses of plants to environments. The strategy to survive and its molecular mechanism..[SHUJUNSHA Co., Ltd., Tokyo, Japan,(1999)]Watanabe A., Shinozaki K., Terashima I., and the others


    The Plant Cell Technology Series, an extra issue of The Cell Technology 6. Experimental protocols for observation of plant cells- from the gene expression to the intracellular structure and function..[SHUJUNSHA Co., Ltd., Tokyo, Japan,(1997)]Fukuda H., Nishimura M., Nakamura K., and the others


    Comparison of contents for cytosolic-glutamine synthetase and NADH-dependent glutamate synthase proteins in leaves of japonica, indica, and javanica rice plants. T. Ando et al. (Eds.), Plant nutrition-for sustainable food production and environment..[Kluwer Academic Publishers. Printed in Japan.,(1997)]Yamaya T., Obara M., Hayakawa T., Sato T.


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    Original Papers

    Lack of ACTPK1, an STY kinase, enhances ammonium uptake and use, and promotes growth of rice seedlings under sufficient external ammonium.[The Plant Journal,93(6),(2018),992-1006]Marcel Pascal Beier, Mitsuhiro Obara, Akiko Taniai, Yuki Sawa, Jin Ishizawa, Haruki Yoshida, Narumi Tomita, Tsuyoshi Yamanaka, Yawara Ishizuka, Syuko Kudo, Akira Yoshinari, Shiho Takeuchi, Soichi Kojima, Tomoyuki Yamaya, Toshihiko Hayakawa*
    10.1111/tpj.13824


    Lack of cytosolic glutamine synthetase1;2 activity reduces nitrogen-dependent biosynthesis of cytokinin required for axillary bud outgrowth in rice seedlings.[Plant and Cell Physiology,58(4),(2017),679-690]Miwa Ohashi, Keiki Ishiyama, Soichi Kojima, Mikiko Kojima, Hitoshi Sakakibara, Tomoyuki Yamaya, Toshihiko Hayakawa*
    10.1093/pcp/pcx022


    Outgrowth of Rice Tillers Requires Availability of Glutamine in the Basal Portions of Shoots.[Rice,11(31),(2018),1-11]Miwa Ohashi*, Keiki Ishiyama, Soichi Kojima, Noriyuki Konishi, Kazuhiro Sasaki, Mitsue Miyao, Toshihiko Hayakawa, Tomoyuki Yamaya
    10.1186/s12284-018-0225-2


    Reduction in sucrose contents by downregulation of fructose-1,6-bisphosphatase 2 causes tiller outgrowth cessation in rice mutants lacking glutamine synthetase1;2..[Rice (New York, N.Y.),11(1),(2018),65-]Ohashi M, Ishiyama K, Kusano M, Fukushima A, Kojima S, Hayakawa T, Yamaya T
    10.1186/s12284-018-0261-y
    http://www.ncbi.nlm.nih.gov/pubmed/30578468


    Lack of cytosolic glutamine synthetase1;2 in vascular tissues of axillary buds causes severe reduction in their outgrowth and disorder of metabolic balance in rice seedlings.[The Plant Journal,81(2),(2015),347-356]Miwa Ohashi, Keiki Ishiyama, Miyako Kusano, Atsushi Fukushima, Soichi Kojima, Atsushi Hanada, Keiichi Kanno, Toshihiko Hayakawa, Yoshiya Seto, Junko Kyozuka, Shinjiro Yamaguchi, Tomoyuki Yamaya*
    10.1111/tpj.12731


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    Review Papers

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    Honours, Awards and Prizes
    • Outstanding Poster Award of 1st International Symposium on the Nitrogen Nutrition of Plants (Nitrogen 2010).(2010)
    • 日本土壌肥料学会2010年度北海道大会 ベストポスター賞(2010)
    • 日本土壌肥料学会2007年度東京大会 ポスター賞(2007)
    • Best article award in 2004, Japanese Society for Plant Cell and Molecular Biology.(2004)
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    Updated on
    2019.03.29
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