Diversity and evolution of conjugation style in the alga
| Project/Area Number |
26440223
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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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) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | ミカヅキモ / 種分化 / 生殖様式 / ホモタリズム / ヘテロタリズム / 自殖 / 生殖隔離 / 藻類 / 有性生殖 / 接合 / 性決定遺伝子 |
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| Outline of Final Research Achievements |
Closterium is a unicellular isogamous charophycean alga. In this alga, two types of zygospore formation exist in natural populations. Some individuals form zygospores within single clones (homothallism), whereas others form zygospores between different clones (heterothallism). Using transcriptomic analyses of the homothallic strain, a homolog of CpMinus1 that is a mt- of the heterothallic strain genome-specific gene encoding a transcription factor was isolated and named CpMinus1N. Homothallic cells with knockdown of CpMinus1N showed reduced competence for sexual reproduction and formed a hybrid zygospore with mt+ cells of the closely related heterothallic strain. We suggest that the CpMinus1N gene regulates the type of zygospore formation. In addition, sequence information of CpMinus1N of various strains were determined by performing genomic analyses. The possibility that the homothallic strain evolved from the mt- cell of the heterothallic strain was considered.
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Report
(4 results)
Research Products
(21 results)
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[Journal Article] A Receptor-like Kinase, Related to Cell Wall Sensor of Higher Plants, is required for Sexual Reproduction in the Unicellular Charophycean Alga, Closterium peracerosum-strigosum-littorale Complex2015
Author(s)
Hirano, Naoko; Marukawa, Yuka; Abe, Jun; Hashiba, Sayuri; Ichikawa, Machiko; Tanabe, Yoichi; Ito, Motomi; Nishii, Ichiro; Tsuchikane, Yuki; Sekimoto, Hiroyuki
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Journal Title
Plant and Cell Physiology
Volume: 印刷中
Related Report
Peer Reviewed
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[Presentation] Characterization of a sex-specific receptor-like protein, expressing during the conjugation of heterothallic Closterium peracerosum-strigosum-littorale complex.2015
Author(s)
Kanda, N., Ichikawa, M., Ono, A., Tsuchikane, Y., Abe, J., Sekimoto, H.
Organizer
6th European Phycological Congress
Place of Presentation
London
Year and Date
2015-08-23
Related Report
Int'l Joint Research
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