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Citation for Study 13735

About Citation title: "The Evolution of Male-Female Sexual Dimorphism Predates the Gender-Based Divergence of the Mating Locus Gene MAT3/RB".
About Study name: "The Evolution of Male-Female Sexual Dimorphism Predates the Gender-Based Divergence of the Mating Locus Gene MAT3/RB".
About This study is part of submission 13735 (Status: Published).

Citation

Hiraide R., Kawai-toyooka H., Hamaji T., Matsuzaki R., Kawafune K., Abe J., Sekimoto H., Umen J., & Nozaki H. 2013. The Evolution of Male-Female Sexual Dimorphism Predates the Gender-Based Divergence of the Mating Locus Gene MAT3/RB. Molecular Biology and Evolution, 30(5): 1038-1040.

Authors

  • Hiraide R.
  • Kawai-toyooka H.
  • Hamaji T.
  • Matsuzaki R. (submitter) Phone +81-29-850-2204
  • Kawafune K.
  • Abe J.
  • Sekimoto H.
  • Umen J.
  • Nozaki H. Phone +81-3-5841-4048

Abstract

The molecular bases for the evolution of male-female sexual dimorphism are possible to study in volvocine algae because they encompass the entire range of reproductive morphologies from isogamy to oogamy. In 1978, Charlesworth suggested the model of a gamete size gene becoming linked to the sex-determining or mating type locus (MT) as a mechanism for the evolution of anisogamy. Here we carried out the first comprehensive study of a candidate MT-linked oogamy gene, MAT3/RB, across the volvocine lineage. We found that evolution of anisogamy/oogamy predates the extremely high male-female divergence of MAT3 that characterizes the Volvox carteri lineage. The data demonstrate very little sex-linked sequence divergence of MAT3 between the two sexes in other volvocine groups, though linkage between MAT3 and the mating locus appears to be conserved. These data implicate genetic determinants other than or in addition to MAT3 in the evolution of anisogamy in volvocine algae.

Keywords

gender-based divergence; gene conversion; male-female sexual dimorphism; MAT3/RB; mating type locus; volvocine algae

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S13735
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