Developmental mechanism for plant growth by gene duplications and mutations

2015 Fiscal Year Final Research Report

• Project Area: Correlative gene system: establishing next-generation genetics
• Project/Area Number: 23113005
• 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: Nagoya University
• Principal Investigator: MATSUOKA Makoto 名古屋大学, 生物機能開発利用研究センター, 教授 (00270992)
• Co-Investigator(Kenkyū-buntansha): MAKAJIMA Masatoshi 東京大学, 生命農学研究科, 准教授 (50237278)
• Project Period (FY): 2011-04-01 – 2016-03-31
• Keywords: 育種学 / 遺伝学 / 遺伝子 / 植物

Outline of Final Research Achievements

In this project, we studied the evolution of gibberellin (GA) synthesis and its signaling system in the process of plant evolution, and revealed the following new insights. 1. Although Physcomitrella patens does not have GA or its perception system, it contains a member of GA signaling pathway, GAMYB, which functions as a transacting factor in GA signaling in flowering plants. GAMYB in moss is essential for development of male organ, antheridium, which is essentially same as its function in flowering plants. 2. Lygodium japonicum, a fern, produces derivatives of GA for antheridium development. We revealed that this plant developed a novel unique secretion/perception system of antheridiogen by modifying the GA synthesis pathway. 3. We revealed that Arabidopsis, a species of Brassicales, contains a unique and complex system for GA perception by different combinations with 3 GA receptors and 5 DELLA-GA suppressor proteins.

Free Research Field

作物遺伝育種