Molecular mechanism of growth angle control of lateral organs in response to gravity direction

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04388
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Plant molecular biology/Plant physiology
• Research Institution: Nagoya University
• Principal Investigator: Morita Miyo 名古屋大学, 生命農学研究科, 教授 (10314535)
• Research Collaborator: Taniguchi Masatoshi 名古屋大学, 大学院生命農学研究科, 研究員 ; Furutani Masahiko 名古屋大学, 大学院生命農学研究科, 特任助教 ; Nishimura Takeshi 名古屋大学, 大学院生命農学研究科, 特任助教 ; Kubota Kenta 名古屋大学, 大学院生命農学研究科, 大学院生 ; Oshida Ryuichiro 名古屋大学, 大学院生命農学研究科, 大学院生 ; Mori Akiko 名古屋大学, 大学院生命農学研究科, 大学院生 ; Kondo Chiemi 名古屋大学, 大学院生命農学研究科, 大学生
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 重力屈性 / 器官の伸長方向制御

Outline of Final Research Achievements

DLLs genes are involved in the signaling process within statocytes in gravitropism of Arabidopsis. The genes also make the lateral shoots grow upward. AtTAC1 shows sequence similarity to DLLs except for lacking CDL sequence which is essential for molecular function of DLLs. Interestingly, AtTAC1 plays a role in downward growth of lateral shoots, that is, an opposite effect on the direction of shoot growth. Our aim is to understand how gravitropism of main axes and plageotropism of lateral shoots are unified. In this study, we determined the gene structures of DLLs family including CCP1-3 and of AtTAC1, and analyzed their physiological functions in growth angle control.

Free Research Field

植物分子遺伝学