| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Outline of Final Research Achievements |
We found five cyclin-related genes and two cyclin-dependent kinases (CDKs) genes from data base of cucumber (Cucumis sativus L.) genome. Two cyclin-related genes were expressed specifically in the area containing arrested stamen primordia (ACASP) in female flower buds, but was barely detected in male flower buds in monoecious cucumber. Expression of the other five genes was detected in the ACASP but not in pistils of female flower buds. Expression of all seven genes was elevated 2-5 times within 6 hours transiently following the application of ethephon, an ethylene-releasing agent, to the shoot apices. These results suggest that these seven cell cycle-related genes play a role in the arrest of stamens of female flowers in monoecious cucumber. The mechanism that cell growth is restrained and finally cells die although cell division rates remained high in ACASP of female flowers should be clarified.
|
