| Project/Area Number |
23770093
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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 |
Biodiversity/Systematics
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| Research Institution | Japan Women's University |
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Principal Investigator |
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 生殖隔離 / 種分化 / 性フェロモン / ミカヅキモ / 藻類 / ヘテロタリズム / 有性生殖 |
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| Outline of Final Research Achievements |
reproductive isolation. The Closterium peracerosum-strigosum-littorale complex is a unicellular alga, and it is composed of several reproductively isolated mating groups of heterothallic strains. However, only mating groups IIA, IIB, and IE can be maintained.
I performed field studies to obtained reproductively isolated Closterium peracerosum-strigosum-littorale complexes. Then, I established a new mating group, G. I studied the phylogenetic relationship by using DNA sequences of 1506 group I introns of these mating group. According to the alignment, significant phylogenetic relationships were observed among mating groups IE and G, while mating groups IIA and IIB were distant from groups IE and G. Mating group IE was completely sexually isolated from mating group G. However, partial communication of the sex pheromone existed. Finally, I studied a sex pheromone and sexual isolation by comparing RNA-seq data of mating group G with those of mating group IE
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