Multidimensional exploration of logics of plant sexual development and reproduction

2017 Fiscal Year Final Research Report

• Project Area: Multidimensional Exploration of Logics of Plant Development
• Project/Area Number: 25113005
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Biological Sciences
• Research Institution: Kyoto University
• Principal Investigator: Araki Takashi 京都大学, 生命科学研究科, 教授 (00273433)
• Co-Investigator(Renkei-kenkyūsha): YAMATO Katsuyuki T. 近畿大学, 生物理工学部, 教授 (50293915) ; ENDO Motomu 京都大学, 大学院生命科学研究科, 准教授 (80551499) ; NIWA Masaki 京都大学, 大学院生命科学研究科, 助教 (40756780) ; TAOKA Ken-ichiro 横浜市立大学, 木原生物学研究所, 特任助教 (00467698)
• Research Collaborator: NIWA Masaki , ポスドク ; HIGO Asuka , ポスドク ; INOUE Keisuke , ポスドク ; TOMITA Yuki , 技術補佐員
• Project Period (FY): 2013-06-28 – 2018-03-31
• Keywords: 有性生殖 / 花成 / 代謝 / シロイヌナズナ / ゼニゴケ / 生殖器形成 / 配偶子形成

Outline of Final Research Achievements

In order to understand underlying logic of plant developmental process leading to successful sexual reproduction, (1) metabolic basis of regulation of floral transition (in Arabidopsis) and (2) whole process of sexual reproduction from the induction to fertilization and embryogenesis (in Marchantia) were studied. Main achievement includes elucidation of a regulatory pathway of flowering by potassium, elucidation of temporal aspect of florigen (FT protein) transport, identification of specific amino acid residues involved in FT transport, establishment of transcriptional framework for male sexual organ and gamete development, identification of factors involved in germline segregation, identification of factors involved in sperm cell differentiation, identification of factors involved in regulation of induction of sexual development in response to environmental stimuli, and novel findings on fertilization, early stages of embryogenesis and sporogenesis.

Free Research Field

植物の発生生物学