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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Assoc. 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) Hori, K., Saisho, D., Nagata, K., Nonoue, Y., Uehara-Yamaguchi, Y., Kanatani, A., Shu, K., Hirayama, T., Yonemaru, J., Fukuoka, S. and Mochida, K. Genetic Elucidation for Response of Flowering Time to Ambient Temperatures in Asian Rice Cultivars. Int. J. Mol. Sci. 22: 1024. (2021. 1.)
(2) Otsuka, K., Mamiya, A., Konishi, M., Nozaki, M., Kinoshita, A., Tamaki, H., Arita, M., Saito, M., Yamamoto, K., Hachiya, T., Noguchi, K., Ueda, T., Yagi, Y., Kobayashi, T., Nakamura, T., Sato, Y., Hirayama, T. and Sugiyama, M. Temperaturedependent fasciation mutants provide a link between mitochondrial RNA processing and lateral root morphogenesis. eLife 10: e61611. (2021. 1.)
(3) Wakamatsu, A., Mori, I. C., Matsuura, T., Taniwaki, Y., Ishii, R. and Yoshida, R. Possible roles for phytohormones in controlling the stomatal behavior of Mesembryantheum crystallinum during the salt-induced transition from C3 to crassulacean acid metabilism. J. Plant Physiol. 262: 153448. (2021. 7.)
(4) Mori, I. C, Arias-Barreiro, C. R., Ooi, L., Lee, N. H., Sobahan, M. A., Nakamura, Y., Hirai, Y. and Murata, Y. Cadmium uptake via apoplastic bypass flow in Oryza sativa. J. Plant Res. 134: 1139-1148. (2021. 9.)
(5) Hirayama, T. PARN-like Proteins Regulate Gene Expression in Land Plant Mitochondria by Modulating mRNA Polyadenylation. Int. J. Mol. Sci. 22: 10766. (2021. 10.)
(6) Hirosawa, Y., Tada, A., Matsuura, T., Mori, I. C., Ogura, Y., Hayashi, T., Uehara, S., Ito-Inaba, Y. and Inaba, T. Salicylic Acid Acts Antagonistically to Plastid Retrograde Signaling by Promoting the Accumulation of Photosynthesisassociated Proteins in Arabidopsis. Plant Cell Physiol. 62: 1728-1744. (2021. 12.)
(7) Hisano, H., Hoffie, R. E., Abe, F., Munemori, H., Matsuura, T., Endo, M., Mikami, M., Nakamura, S., Kumlehn, J. and Sato, K. Regulation of germination by targeted mutagenesis of grain dormancy genes in barley. Plant Biotechnol. J. doi: 10.1111/pbi.13692 (2021. 8. Online preview)
(8) Shiono, K., Yoshikawa, M., Kreszies, T., Yamasa, S. Hojo, Y., Matsuura, T, Mori, I. C., Schreiber, L. and Yoshioka, T. Abscisic acid is required for exodermal suberization to form a barrier to radical oxygen loss in the adventitious roots of rice (Oryza sativa). New Phytol. (2021. 11. Online preview)

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