|Budget Amount *help
¥119,600,000 (Direct Cost: ¥92,000,000、Indirect Cost: ¥27,600,000)
Fiscal Year 2020: ¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000)
Fiscal Year 2019: ¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000)
Fiscal Year 2018: ¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000)
Fiscal Year 2017: ¥29,250,000 (Direct Cost: ¥22,500,000、Indirect Cost: ¥6,750,000)
Fiscal Year 2016: ¥31,850,000 (Direct Cost: ¥24,500,000、Indirect Cost: ¥7,350,000)
|Outline of Final Research Achievements
Gibberellins (GAs) are perceived by its nuclear receptor GID1. Previously, we found that the induction of antheridium in ferns is mediated by the GID1-GA system (Science 2014). Therefore, it is considered that GA was born as a reproductive hormone. In addition, the structural analysis of GID1-GA let me know that the structural information was important for understanding the evolutional function of GA.
In this study, we (1) investigated GA-GID1 binding from ferns to seed plants, and (2) performed structural and functional analyses of GA synthesis and inactivation enzymes. Based on these analyses, we hypothesized that an evolutionary arms race occurs in the mechanism of GA production and inactivation in plant reproduction.