Difference in flowering time can initiate speciation of nocturnally flowering species

Tomotaka Matsumoto, Akiko A. Yasumoto, Kozue Nitta, Shun K. Hirota, Tetsukazu Yahara, Hidenori Tachida

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

抄録

Isolation mechanisms that prevent gene flow between populations prezygotically play important roles in achieving speciation. In flowering plants, the nighttime flowering system provides a mechanism for isolation from diurnally flowering species. Although this system has long been of interest in evolutionary biology, the evolutionary process leading to this system has yet to be elucidated because of the lack of good model species. However, the genetic mechanisms underlying the differences in flowering times and the traits that attract pollinators between a pair of diurnally and nocturnally flowering species have recently been identified in a few cases. This identification enables us to build a realistic model for theoretically studying the evolution of a nocturnally flowering species. In this study, based on previous experimental data, we assumed a model in which two loci control the flowering time and one locus determines a trait that attracts pollinators. Using this model, we evaluated the possibility of the evolution of a nocturnally flowering species from a diurnally flowering ancestor through simulations. We found that a newly emerging nighttime flowering flower exhibited a sufficiently high fitness, and the evolution of a nocturnally flowering species from a diurnally flowering species could be achieved when hybrid viability was intermediate to low, even in a completely sympatric situation. Our results suggest that the difference in flowering time can act as a magic trait that induces both natural selection and assortative mating and would play an important role in speciation between diurnally and nocturnally flowering species pairs.

元の言語英語
ページ(範囲)61-71
ページ数11
ジャーナルJournal of Theoretical Biology
370
DOI
出版物ステータス出版済み - 4 7 2015

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Speciation
Flowering
flowering
Magic
Internal-External Control
Gene Flow
Genetic Selection
Identification (control systems)
Genes
Population
pollinators
Isolation
Locus
loci
assortative mating
Natural Selection
Viability
natural selection
Model
Fitness

All Science Journal Classification (ASJC) codes

  • Statistics and Probability
  • Medicine(all)
  • Modelling and Simulation
  • Immunology and Microbiology(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Applied Mathematics

これを引用

Difference in flowering time can initiate speciation of nocturnally flowering species. / Matsumoto, Tomotaka; Yasumoto, Akiko A.; Nitta, Kozue; Hirota, Shun K.; Yahara, Tetsukazu; Tachida, Hidenori.

:: Journal of Theoretical Biology, 巻 370, 07.04.2015, p. 61-71.

研究成果: ジャーナルへの寄稿記事

Matsumoto, Tomotaka ; Yasumoto, Akiko A. ; Nitta, Kozue ; Hirota, Shun K. ; Yahara, Tetsukazu ; Tachida, Hidenori. / Difference in flowering time can initiate speciation of nocturnally flowering species. :: Journal of Theoretical Biology. 2015 ; 巻 370. pp. 61-71.
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