今村（陣田） 綾
（いまむら（じんだ）・あや）
Aya Imamura-Jinda
略歴
- 名古屋大学大学院生命農学研究科博士課程修了
- 日本学術振興会特別研究員を経て本学へ
植物遺伝学研究室
卒業研究テーマ例
- シロイヌナズナの成長や分化制御についての研究
- イネのサイトカイニン情報伝達の調節機構に関する研究
- イネの種子形成調節についての研究
植物ホルモン"サイトカイニン"の情報伝達と生理作用の解析
イネの環境変化に応答した形態形成制御の解析
穀物植物の貯蔵機能の解析
- 研究の応用領域
- 植物品種改良
植物育種の技術開発 - 産官学連携で求めるパートナー
- 植物の分子遺伝学、生理学、生化学分野の基礎研究者
植物育種の技術開発に携わる従事者・団体・企業
Characterization of phytohormon, cytokinin signal transduction system and physiological functions of cytokinin
Regulation of the growth and development of Oryza sativa in response to environment stress
Mechanism of a storage system of cereal plant.
focus:
Various plant hormones (phytohormone) are widely used regulating plant physiological process and development process which is essential to survive on the germinated place. When a signal which is generated in response to an environmental change, is sensed by the specific receptor, this is transduced inside cells in order to amplify the intracellular signal and trigger the cellular responses such as genes expressions. In these processes, there are still many questions about how the phytohormone is produced and received by specific receptor in response to environmental signals and how the intracellular signals are transduced. I have interests with Cytokinin signaling, “His-Asp phosphorelay signal transduction system” and its effects in higher plant, Oryza sativa. As for cytokinin, Histidine Kinase were identified and characterized as cytokinin receptors in model plant Arabidopsis thaliana. And this signal transduction system is composed of 3 kinds of factor which are Histidine kinase receptor, a signal mediating factor Histidine-containing phosphotransfer (Hpt) protein and Response Regulator (HK-HPt-RR). As a result of signal transduction, targeted some genes are expressed. I have been interested in the cytokinin-regulated specific molecular mechanism of this signal transduction in respond to some environmental stress such a salt, a low temperature, a drought or light signals. And I believe this research will bring the hint to develop cereal plants adaptability against coming environmental changes.
Harauchi, Y., Kajimoto, T., Ohta, E., Kawachi, H., Imamura-Jinda, A. and Ohta, S., Prenylated purine alkaloids from seeds of Gleditsia japonica Phytochemistry 143 (2017) 145-150
Nakagawa, U., Suzuki, D., Ishikawa, M., Sato, H., Kamemura, K. and Imamura, A., Acetylation of a-Tubulin on Lys40 Is a Widespread Post-Translational Modif ication in Angiosperms Biosci. Biotechnol. Biochem, 77(7), 1602-1605 (2013)
Nakagawa, U., Kamemura, K. and Imamura, A., Regulated Changes in the Acetylation of a-Tubulin on Lys40 during Growth and Organ Development in Fast Plants, Brassica rapa L. Biosci. Biotechnol. Biochem, 77(11), 2228-2233 (2013)
Yokoyama, A., Yamashino,T., Amano, Y. Tajima, Y., Imamura, A., Sakakibara, H. and Mizuno, T., Type-B ARR transcription factors, ARR10 and ARR12, are implicated in cytokinin-mediated regulation of protoxylem dif f erentiation in roots of Arabidopsis thaliana. Plant Cell Physiol., 48(1), 84-96 (2007)
Tajima, Y., Imamura, A., Kiba, T., Amano, Y., Yamashino, T. and Mizuno., T., Comparative studies on the type-B response regulators revealing their distinctive properties in the His-to-Asp phosphorelay signal transduction of Arabidopsis thaliana. Plant Cell Physiol., 45, 28-39 (2004)