Research output: Contribution to journal › Article › peer-review
High rate of meiotic recombination and its implications for intricate speciation patterns in the white wagtail (Motacilla alba). / Semenov, Georgy A.; Basheva, Ekaterina A.; Borodin, Pavel M. et al.
In: Biological Journal of the Linnean Society, Vol. 125, No. 3, 29.10.2018, p. 600-612.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - High rate of meiotic recombination and its implications for intricate speciation patterns in the white wagtail (Motacilla alba)
AU - Semenov, Georgy A.
AU - Basheva, Ekaterina A.
AU - Borodin, Pavel M.
AU - Torgasheva, Anna A.
PY - 2018/10/29
Y1 - 2018/10/29
N2 - Conspicuous phenotypic differences sometimes coexist with shallow genome-wide divergence between taxa. Along with genomically localized selection and extensive gene flow, a high rate of meiotic recombination might contribute to such a pattern; however, empirical evidence for the latter is lacking. We studied meiotic recombination in the white wagtail (Motacilla alba) - a bird species showing extensive divergence in plumage traits but little genomic differentiation, yet broadly incongruent geographical variation between morphological traits and genetic markers. We found that the white wagtail (2n = 82) has the highest number of recombination nodules per autosome set (76.1 ± 8.6) and thus the longest autosomal genetic map (3805 cM) among all birds examined to date. We suggest that a high recombination rate could promote decoupling of phenotypic and genetic variation and influence the genetic architecture of traits involved in reproductive barriers. Our study highlights the importance of studying meiotic recombination within a unified methodological framework, and the need for a broader sampling of taxa to understand how variation in recombination rates contributes to patterns of speciation.
AB - Conspicuous phenotypic differences sometimes coexist with shallow genome-wide divergence between taxa. Along with genomically localized selection and extensive gene flow, a high rate of meiotic recombination might contribute to such a pattern; however, empirical evidence for the latter is lacking. We studied meiotic recombination in the white wagtail (Motacilla alba) - a bird species showing extensive divergence in plumage traits but little genomic differentiation, yet broadly incongruent geographical variation between morphological traits and genetic markers. We found that the white wagtail (2n = 82) has the highest number of recombination nodules per autosome set (76.1 ± 8.6) and thus the longest autosomal genetic map (3805 cM) among all birds examined to date. We suggest that a high recombination rate could promote decoupling of phenotypic and genetic variation and influence the genetic architecture of traits involved in reproductive barriers. Our study highlights the importance of studying meiotic recombination within a unified methodological framework, and the need for a broader sampling of taxa to understand how variation in recombination rates contributes to patterns of speciation.
KW - Crossing over
KW - MLH1
KW - Recombination
KW - Speciation
KW - Synaptonemal complex
KW - QUAIL COTURNIX-JAPONICA
KW - recombination
KW - GENETIC-LINKAGE MAP
KW - DISEQUILIBRIUM
KW - synaptonemal complex
KW - SYNAPTONEMAL COMPLEXES
KW - speciation
KW - EQUAL RECOMBINATION
KW - GENOMIC DIVERGENCE
KW - EVOLUTION
KW - CHICKEN
KW - REGIONS
KW - CROSSING-OVER
KW - crossing over
UR - http://www.scopus.com/inward/record.url?scp=85057163797&partnerID=8YFLogxK
U2 - 10.1093/biolinnean/bly133
DO - 10.1093/biolinnean/bly133
M3 - Article
AN - SCOPUS:85057163797
VL - 125
SP - 600
EP - 612
JO - Biological Journal of the Linnean Society
JF - Biological Journal of the Linnean Society
SN - 0024-4066
IS - 3
ER -
ID: 17553958