| Project/Area Number |
23770274
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Evolutionary biology
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
HOJO Masaru 琉球大学, 熱帯生物圏研究センター, 研究員 (80569898)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 機能進化 / Distal-less / ジテルペン合成 / ゲラニルゲラニル二リン酸 / RNA-Seq / 次世代シークエンサー / 発現解析 / ゲラニルゲラニル二リン酸合成酵素 / テルペノイド / 化学的防衛 / カースト分化 / シロアリ / ヒドロキシメチルグルタリルCoA / HMG-CoA合成酵素 / HMG-CoAレダクターゼ / RNA干渉 |
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| Research Abstract |
To clarify the diversity and evolutional mechanisms of termite defensive system, I searched for the genes involved with the development of horn-like frontal projection (nasus) and the synthesis of cembrene-derived polycyclic diterpenes by using Nasutitermes takasagoensis which is the most derived termite species. The results indicated that a homeobox gene Distal-less is related to the development of the nasus. Moreover, all genes involved with the precursor of diterpene were determined using next generation sequencer. Especially, geranylgeranyl diphosphate synthase genes were duplicated repeatedly. These results suggest that the synthesis of diterpene is to contribute to the acquisition of a novel defensive system in a termite lineage, coupled with the acquisition of adaptive defensive behaviors.
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