2010 Fiscal Year Final Research Report
Analysis of oscillatory mechanism of the circadian clock and its function in hemimetabolous insects
| Project/Area Number |
19370029
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Animal physiology/Animal behavior
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| Research Institution | Okayama University |
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Principal Investigator |
TOMIOKA Kenji Okayama University, 大学院・自然科学研究科, 教授 (30136163)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 概日リズム / 光周性 / 体内時計 / 時計遺伝子 / RNAi |
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| Research Abstract |
Oscillatory mechanisms of circadian clocks in hemimetabolous insects are studied at a molecular level. The results show that the oscillatory mechanism is based on cyclic expression of so-called clock genes but resembles those of vertebrates rather than those of holometabolous insects in terms of the role of cycle and timeless genes. For the photoperiodic time-measurement, it is revealed that the circadian clock is indispensable and the opsins are the most likely photoperiodic receptors.
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