| Budget Amount *help |
¥101,660,000 (Direct Cost: ¥78,200,000、Indirect Cost: ¥23,460,000)
Fiscal Year 2015: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2014: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2013: ¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2012: ¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2011: ¥31,070,000 (Direct Cost: ¥23,900,000、Indirect Cost: ¥7,170,000)
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| 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.
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