Two problems in the evolution of self-incompatibility:theoretical and empirical studies
Project/Area Number |
25291093
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Ecology/Environment
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Research Institution | Tohoku University |
Principal Investigator |
Sakai Satoki 東北大学, 生命科学研究科, 准教授 (90272004)
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Co-Investigator(Kenkyū-buntansha) |
MAKI MASAYUKI 東北大学, 学術資源研究公開センター, 教授 (60263985)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2015: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
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Keywords | 自家不和合性 / 連鎖 / 識別遺伝子 / 多様性 / S対立遺伝子 / 自家和合性 / 初期進化 / 多様化 / 理論 |
Outline of Final Research Achievements |
We modeled the initial invasion of the first pollen and pistil alleles in gametophytic SI to determine whether these alleles can stably co-exist in a population without tight linkage. We assume pollen and pistil loci each carry an incompatibility allele S and an allele without an incompatibility function N. We assume that pollen with an S allele are incompatible with pistils carrying S alleles, whereas other crosses are compatible. Ovules in pistils carrying an S allele suffer viability costs because recognition consumes resources. We found that the cost of carrying a pistil S allele allows pollen and pistil S alleles to co-exist in a stable equilibrium if linkage is partial. This occurs because parents that carry pistil S alleles but are homozygous for pollen N alleles cannot avoid self-fertilization; however, they suffer viability costs. Hence, pollen N alleles are selected again.
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Report
(4 results)
Research Products
(10 results)
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[Journal Article] Rapid radiation in the Gengduan Mountains region and into Africa with allopolyploidy of Isodon (Lameaceae).2014
Author(s)
Yu, X.-Q., Maki, M., Drew, B. T., Paton, A. J., Li, H.-W., Zhao, J.-L., Cornan, J. G. and Li, J.
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Journal Title
Molecular Phylogenetics and Evolution
Volume: 77
Pages: 183-194
Related Report
Peer Reviewed / Acknowledgement Compliant
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