Group of Environmental Response Systems

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Faculty staff

Prof. Dr. Takashi HIRAYAMA
E-mail: hira-tATokayama-u.ac.jp
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Assoc. Prof. Dr. Izumi MORI
E-mail:imoriATokayama-u.ac.jp
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Assoc. Prof. Dr. Yoko IKEDA
E-mail:yikedaATokayama-u.ac.jp
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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.
ERS

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

(1) Ooi, L. Matsuura, T., Munemasa, S., Murata, Y., Katsuhara, M., Hirayama, T. and Mori, I.C. The mechanism of SO2-induced stomatal closure differs from O3 and CO2 responses and is mediated by nonapoptotic cell death in guard cells. Plant Cell and Environment 42: 467-447. DOI: 10.1111/pce.13406 (2019. 2.)
(2) Yamane, H., Wada, M., Honda, C., Matsuura, T., Ikeda, Y., Hirayama, T., Osako, Y., Gao-Takai, M., Kojima, M., Sakakibara, H. and Tao, R. Overexpression of Prunus DAM6 inhibits growth, represses bud break competency of dormant buds and delays bud outgrowth in apple plants. PLoS One e0214788. doi.org/10.1371/journal.pone. 0214788 (2019. 4.)
(3) 森 泉 アマノリ類の植物ホルモン. In アマノリ生物学の最前線, 三上浩司編, GlobeEdit pp. 177-206. ISBN: 978-6139413577 (2019. 5.)
(4) Takino, H., Kitajima, S., Hirano, S., Oka, M., Matsuura, T., Ikeda, Y., Kojima, M., Takebayashi, Y., Sakakibara, H. and Mino, M. Global transcriptome analyses reveal that infection with chrysanthemum stunt viroid (CSVd) affects gene expression profile of chrysanthemum plants, but the genes involved in plant hormone metabolism and signaling may not be silencing target of CSVd-siRNAs. Plant Gene. 18: 100181. doi.org/10.1016/j.plgene. 2019.100181 (2019. 6.)
(5) Hieno, A., Naznin, H.A., Inaba-Hasegawa, K., Yokogawa, T., Hayami, N., Nomoto, M., Tada, Y., Yokogawa, T., Higuchi-Takeuchi, M., Hanada, K., Matsui, M., Ikeda, Y., Hojo, Y., Hirayama, T., Kusunoki, K., Koyama, H, Mitsuda, N. and Yamamoto, Y.Y. Transcriptome analysis and identification of a transcriptional regulatory network in the response to H2O2. Plant Physiology 160: 1629-1646. doi.org/10.1104/pp.18.01426 (2019. 7.)
(6) Biswas, M.S., Fukaki, H., Mori, I.C., Nakahara, K. and Mano, J. Reactive oxygen species and reactive carbonyl species constitute a feed-forward loop in auxin signaling for lateral root formation. The Plant Journal 100: 536-548. doi: 10.1111/tpj.14456 (2019. 11.)
(7) Mitalo, O., Tosa, Y., Tokiwa, S., Kondo, Y., Azimi, A., Hojo, Y., Matsuura, T., Mori, I.C., Nakano, R., Akagi, T., Ushijima, K., Kubo, Y. 2019. ‘Passe Crassane’ pear fruit (Pyrus communis L.) ripening: Revisiting the role of low temperature via integrated physiological and transcriptome analysis. Postharvest Biology and Technology 158: 110949. doi.org/10.1016/j.postharvbio.2019.110949 (2019. 12.)
(8) 西村宜之・土屋 渉・平山隆志・山崎俊正 アブシシン酸が働くための新たな仕組み, 植物が生育環境の変化に適応するための生存戦略.化学と生物 57: 736-742. (2019. 12.)
(9) Matsuura, T., Mori, I.C., Himi, E. and Hirayama, T. Plant hormone profiling in developing seeds of common wheat (Triticum aestivum L.). Breeding Science doi.org/10.1270/jsbbs.19030 (2019. 10. Online preview)
(10) Kanazawa, M., Ikeda, Y., Nishihama, R., Yamaoka, S., Lee, N.H., Yamato, K.T., Kohchi, T.and Hirayama, T. Regulation of the poly (A) status of mitochondrial mRNA by poly (A) specific ribonuclease is conserved among land plants. Plant Cell Physiology doi.org/10.1093/pcp/pcz212 (2019. 11. Online preview)