Genetic basis for parallel evolution of selfing in green algae
| Project/Area Number |
17K15165
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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 | Chiba University |
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Principal Investigator |
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| Research Collaborator |
TSUCHIKANE Yuki
SEKIMOTO Hiroyuki
NISHIYAMA Tomoaki
KAWAGUCHI Yawako
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 自家交配 / 比較ゲノム / 自殖 / 交配様式 / 生殖システム / 集団ゲノム |
|---|
| Outline of Final Research Achievements |
In this study, we investigated the genomic consequences of evolutionary transitions between heterothallism and homothallism in Closterium peracerosum-strigosum-littorale complex, using the genome-wide polymorphism data from many wild samples. We revealed (1) recurrent transitions between mating types, (2) frequent segmental duplications particularly in homothallic strains, and (3) more accumulations of deleterious mutations in homothallic strains.
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| Academic Significance and Societal Importance of the Research Achievements |
自殖の進化は，何度も繰り返し起きた平行進化の好例である．繰り返し起きた自殖がどのような遺伝メカニズムにより生じ，ゲノムにどのような影響を与えるのかといった問題については，今まで被子植物における研究が主だった．本研究で，接合藻類ヒメミカヅキモにおける自殖進化の遺伝的背景を研究する基盤が整ったことで，自殖の平行進化をより広い分類群で解明し，適応進化にみられる普遍性を検討することができるようになると考えられる．
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Report
(3 results)
Research Products
(31 results)
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[Journal Article] Exploring genetic diversity and signatures of horizontal gene transfer in nodule bacteria associated with Lotus japonicus in natural environments2019
Author(s)
Bamba, M., Aoki, S., Kajita, T., Setoguchi H., Watano, Y., Sato, S., and Tsuchimatsu, T.
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Journal Title
Molecular Plant-Microbe Interactions
Volume: 印刷中
Issue: 9
Pages: 1110-1120
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Patterns of polymorphism at the self-incompatibility locus in 1,083 Arabidopsis thaliana genomes.2017
Author(s)
Tsuchimatsu, T., Goubet, P.M., Gallina, S., Holl, A.C., Fobis-Loisy, I., Berges, H., Marande, W., Prat, E., Meng, D., Long, Q., Platzer, A., Nordborg, M., Vekemans, X., Castric, V.
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Journal Title
Molecular Biology and Evolution
Volume: 印刷中
Issue: 8
Pages: 1878-1889
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Genome sequencing reveals the origin of the allotetraploid Arabidopsis suecica.2017
Author(s)
Novikova, P.Y., Tsuchimatsu, T., Simon, S., Nizhynska, V., Voronin, V., Burns, R., Fedorenko, O.M., Holm, S., Sall, T., Prat, E., Marande, W., Castric, V. and Nordborg, M.
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Journal Title
Molecular Biology and Evolution
Volume: 34
Pages: 957-968
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Diversity and horizontal gene transfer of nodule bacteria associated with Lotus japonicus in natural environments2018
Author(s)
Bamba, M., Aoki, S., Kajita, T., Watano, Y., Setoguchi, H., Sato, S., Tsuchimatsu, T.
Organizer
Annual Meeting of the Society for Molecular Biology and Evolution
Related Report
Int'l Joint Research
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