Group of Environmental Response Systems

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) Fukao, Y., Kobayashi, M., Zarger, S.M., Kurata, R., Fukui, R., Mori, I.C. and Ogata, Y. Quantitative proteomic analysis of the response to zinc, magnesium, and calcium deficiency in specific cell types of Arabidopsis roots. Proteomics 4: 1. (2016. 1.)
(2) Yoshida, R., Mori, I.C., Kamizono, N., Shichiri, Y., Shimatani, T., Miyata, F., Honda, K. and Iwai, S. Glutamate functions in stomatal closure in Arabidopsis and fava bean. J. Plant Res. 129: 39-49. (2016. 1.)
(3) Hisano, H., Matsuura, T., Mori, I.C., Yamane, M. and Sato, K. Endogenous hormone levels affect the regeneration ability of callus derived from different organs in barley. Plant Physiology and Biochemistry 99: 66-72. (2016. 2.)
(4) Takagi, H., Ishiga, H., Watanabe, S., Konishi, T., Egusa, M., Akiyoshi, N., Matsuura, T., Mori, I.C., Hirayama, T., Kaminaka, H., Shimada, H. and Sakamoto, A. Allantoin, a stress-related purine metabolite, can activate jasmonate signaling in a MYC2-regulated and abscisic acid-dependent manner, J. Exp. Bot. 67: 2519-2532. (2016. 3.)
(5) Hayashi, S. and Hirayama, T. ahg12 is a dominant proteasome mutant that affects multiple regulatory systems for germination of Arabidopsis. Scientific Rep. 6: 25351. (2016. 4.)
(6) Ishiga, Y., Ishiga, T., Ikeda, Y., Matsuura, T. and Mysore, K.S. NADPH-dependent thioredoxin reductase C plays a role in nonhost disease resistance against Pseudomonas syringae pathogens by regulating chloroplast- generated reactive oxygen species. Peer J. 4: e1938. (2016. 4.)
(7) Rigal, M., Becker, C., Pélissier T., Pogorelcnik, R., Devos, J., Ikeda, Y., Weigel, D. and Mathieu, O. Epigenome confrontation triggers immediate reprogramming of DNA methylation and transposon silencing in Arabidopsis thaliana F1 epihybrids. Proc. Natl. Acad. Sci. USA. 113: 2083-2092. (2016. 4.)
(8) Mikami, K., Mori, I.C., Matsuura, T., Ikeda, Y., Kojima, M., Sakakibara, H. and Hirayama, T. Comprehensive quantification and genome survey reveal the presence of novel phytohormone action modes in red seaweeds. J. Applied Phycology 28: 2539-2548. (2016. 8.)
(9) Yin, Y., Adachi, Y., Nakamura, Y., Munemasa, S., Mori, I.C. and Murata, Y. Involvement of OST1 protein kinase and PYR/PYL/RCAR receptors in methyl jasmonate-induced stomatal closure in Arabidopsis guard cells. Plant Cell Physiol. 57: 1779-1790. (2016. 8.)