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Verfasst von:Muir, Graham [VerfasserIn]   i
Titel:Does local adaptation cause high population differentiation of Silene Latifolia Y chromosomes?
Verf.angabe:Graham Muir, Roberta Bergero, Deborah Charlesworth, and Dmitry A. Filatov
Umfang:13 S.
Fussnoten:Gesehen am 15.05.2017
Titel Quelle:Enthalten in: Evolution
Jahr Quelle:2011
Band/Heft Quelle:65(2011), 12, S. 3368-3380
ISSN Quelle:1558-5646
Abstract:Natural selection can reduce the effective population size of the nonrecombining Y chromosome, whereas local adaptation of Y-linked genes can increase the population divergence and overall intra-species polymorphism of Y-linked sequences. The plant Silene latifolia evolved a Y chromosome relatively recently, and most known X-linked genes have functional Y homologues, making the species interesting for comparisons of X- and Y-linked diversity and subdivision. Y-linked genes show higher population differentiation, compared to X-linked genes, and this might be maintained by local adaptation in Y-linked genes (or low sequence diversity). Here we attempt to test between these causes by investigating DNA polymorphism and population differentiation using a larger set of Y-linked and X-linked S. latifolia genes (than used previously), and show that net sequence divergence for Y-linked sequences (measured by Da, also known as δ) is low, and not consistently higher than X-linked genes. This does not support local adaptation, instead, the higher values of differentiation measures for the Y-linked genes probably result largely from reduced total variation on the Y chromosome, which in turn reflect deterministic processes lowering effective population sizes of evolving Y-chromosomes.
DOI:doi:10.1111/j.1558-5646.2011.01410.x
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Kostenfrei: Verlag: http://dx.doi.org/10.1111/j.1558-5646.2011.01410.x
 Kostenfrei: Verlag: http://onlinelibrary.wiley.com/doi/10.1111/j.1558-5646.2011.01410.x/abstract
 DOI: https://doi.org/10.1111/j.1558-5646.2011.01410.x
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1558589600
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