Recombination rate evolution and the origin of species

Ortiz-Barrientos, Daniel, Engelstaedter, Jan and Rieseberg, Loren H. (2016) Recombination rate evolution and the origin of species. Trends in Ecology and Evolution, 31 3: 226-236. doi:10.1016/j.tree.2015.12.016


Author Ortiz-Barrientos, Daniel
Engelstaedter, Jan
Rieseberg, Loren H.
Title Recombination rate evolution and the origin of species
Journal name Trends in Ecology and Evolution   Check publisher's open access policy
ISSN 0169-5347
1872-8383
Publication date 2016
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1016/j.tree.2015.12.016
Open Access Status Not Open Access
Volume 31
Issue 3
Start page 226
End page 236
Total pages 11
Place of publication Oxford, United Kingdom
Publisher Elsevier
Collection year 2017
Language eng
Subject 1105 Dentistry
Abstract A recipe for dissolving incipient species into a continuum of phenotypes is to recombine their genetic material. Therefore, students of speciation have become increasingly interested in the mechanisms by which recombination between locally adapted lineages is reduced. Evidence abounds that chromosomal rearrangements, via their suppression of recombination during meiosis in hybrids, play a major role in adaptation and speciation. By contrast, genic modifiers of recombination rates have been largely ignored in studies of speciation. We show how both types of reduction in recombination rates facilitate divergence in the face of gene flow, including the early stages of adaptive divergence, the persistence of species after secondary contact, and reinforcement. An often-overlooked connection between the evolution of sexual recombination and the origin of new species with gene flow suggests that the conditions for speciation with gene flow may be less restrictive than previously anticipated. Evolutionary scenarios for which mathematical models predict selection for reduced recombination can provide insights into how ecological speciation and reinforcement can proceed.Recent advances in our understanding of the molecular mechanisms of recombination in eukaryotes have provided first insights into how recombination rates can be modified within and between species.In addition to the well-established role of chromosomal inversions during speciation, more subtle changes in recombination rates through modifier genes influencing the frequencies and distributions of crossover across the genome might also be important.A better understanding of genomic patterns of differentiation during speciation could be gained by taking into account that recombination rates can themselves evolve.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: HERDC Pre-Audit
School of Biological Sciences Publications
 
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