| Project/Area Number |
21657024
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Biodiversity/Systematics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
NOZAKI Hisayoshi 東京大学, 大学院・理学系研究科, 准教授 (40250104)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥3,350,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2009: ¥500,000 (Direct Cost: ¥500,000)
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| Keywords | 大系統 / 大分類 / 植物界 / 色素体一次共生 / 色素体二次共生 / 細胞内共生的遺伝子水平伝達 |
|---|
| Research Abstract |
Based on the re-examinations and re-analyses of the sequence data previously used for macrophylogeny of eukaryotes as well as on the construction of EST data from the free-living, plastid-lacking euglenoid Peranema, it was suggested that the fast evolving genes from intracellular endoparasites, ciliates etc. may have mislead the nonmonophyly of the primary phototrophs. Since our nuclear genome analyses also demonstrated the possible cryptic secondary or tertiary endosymbiosis of a red alga before the secondary endosymbiosis of a green alga in Chlorarachniophyta or Euglenophyta, respectively, the concept of the secondary phototrophs is now renewing.
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