Group of Environmental Response Systems

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Faculty staff

Prof. Dr. Takashi HIRAYAMA
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Assoc. Prof. Dr. Izumi MORI
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Assist. Prof. Dr. Yoko IKEDA
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Lectures: Environmental Stress Response Systems, Advanced Signaling Mechanisms, Plant Molecular Cell Physiology
Keywords: Environment; Stress response; Phytohormones; Signal transduction

Summary of main research topics

Uncovering secrets of plants: how plants ‘know’ their surroundings and ‘think up’ ways to cope with them
Being sessile, plants must adapt to all environmental changes or perish. Plants are already well-known to recognize environmental fluctuations and to respond promptly to such changes. Nevertheless, it remains unclear how plants dissect and integrate environmental signals and make a decision to render an optimal response even with no information-integration systems such as those of our central nervous system. To address this question, our group investigates environmental stress response systems of plants using physiological, molecular biological, and molecular genetic approaches. Among stress responses, we emphasize the study of stress-associated plant hormone signaling. Our ultimate goal is to take advantage of the research outcomes to create stress-tolerant crops.

Latest publications (for complete and most current publications visit group pages)

(1) Mori, I. C., Ikeda, Y., Matsuura, T., Hirayama, T. and Mikami, K. Phytohormones in red seaweeds: a technical review of methods for analysis and a consideration of genomic data. Botanica Marina. 60: 153-170. (2017. 4.)
(2) Ikeda, Y., Pélissier, T., Bourguet, P., Becker, C., Pouch-Pélissier, M. N., Pogorelcnik, R., Weingartner, M., Weigel, D., Deragon, J. M. and Mathieu, O. Arabidopsis proteins with a transposon-related domain act in gene silencing. Nature Commun. 8: 15122. (2017. 5.)
(3) Shimada, T., Endo, T,. Rodríguez, A., Fujii, H., Goto, S., Matsuura, T., Hojo, Y., Ikeda, Y., Mori, I. C., Fujikawa, T., Peña, L. and Omura, M. Ectopic accumulation of linalool confers resistance to Xanthomonas citri subsp. citri in transgenic sweet orange plants. Tree Physiol. 37: 654-664. (2017. 5.)
(4) Gupta, A., Hisano, H., Hojo, Y., Matsuura, T., Ikeda, Y., Mori, I. C. and Senthil-Kumar, M. Global profiling of phytohormone dynamics during combined drought and pathogen stress in Arabidopsis thaliana reveals ABA and JA as major regulators. Sci. Rep. 7: 4017. (2017. 6.)
(5) Khokon, M.A.R., Salam, M.A., Jammes, F., Ye, W.X., Hossain, M.A., Okura, E., Nakamura, Y., Mori, I.C., Kwak, J.M. and Murata, Y. MPK9 and MPK12 function in SA-induced stomatal closure in Arabidopsis thaliana. Biosci. Biotech. Biochem. 81: 1394-1400. (2017. 7.)
(6) Ishiga, Y., Watanabe, M., Ishiga, T., Tohge, T., Matsuura, T., Ikeda, Y., Hofgen, R., Fernie, A. R. and Mysore, K. S. The SAL-PAP chloroplast retrograde pathway contributes to plant immunity by regulating glucosinolate pathway and phytohormone signaling. Mol. Plant Microbe Interact. 30: 829-841. (2017. 8.)
(7) Bowman J. L., et al. (112名省略, Ikeda, Y. : 47番目) Insights into land plant evolution garnered from the Marchantia polymorpha genome. Cell 171: 287-304. (2017. 10.)
(8) 提箸祥幸・保田 浩・北條優子・松浦恭和・森 泉・佐藤 裕 イネの低温初期伸長性に植物ホルモンが及ぼす影響. 日本作物学会紀事86: 367-374. (2017. 10.)
(9) Iida, M., Takano, S., Matsuura, T., Mori, I. C. and Takagi, S. Circumnutation and distribution of phytohormones in Vigna angularis epicotyls. J. Plant Res. doi: 10.1007/s10265-017-0972-y. (2017. 8. Online preview)