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Asymmetric introgression reveals the genetic architecture of a plumage trait

Semenov, Georgy A. and Linck, Ethan and Enbody, Erik D. and Harris, Rebecca B. and Khaydarov, David R. and Alström, Per and Andersson, Leif and Taylor, Scott A. (2021). Asymmetric introgression reveals the genetic architecture of a plumage trait. Nature Communications. 12 , 1019
[Research article]

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Abstract

Genome-wide variation in introgression rates across hybrid zones offers a powerful opportunity for studying population differentiation. One poorly understood pattern of introgression is the geographic displacement of a trait implicated in lineage divergence from genome-wide population boundaries. While difficult to interpret, this pattern can facilitate the dissection of trait genetic architecture because traits become uncoupled from their ancestral genomic background. We studied an example of trait displacement generated by the introgression of head plumage coloration from personata to alba subspecies of the white wagtail. A previous study of their hybrid zone in Siberia revealed that the geographic transition in this sexual signal that mediates assortative mating was offset from other traits and genetic markers. Here we show that head plumage is associated with two small genetic regions. Despite having a simple genetic architecture, head plumage inheritance is consistent with partial dominance and epistasis, which could contribute to its asymmetric introgression. Hybrid zones are windows into the evolutionary process. Semenov et al. find that the head plumage differences between white wagtail subspecies have a simple genetic basis involving two small genetic regions, in which partially dominant and epistatic interactions help to explain how this sexual signal has become decoupled from other plumage traits.

Authors/Creators:Semenov, Georgy A. and Linck, Ethan and Enbody, Erik D. and Harris, Rebecca B. and Khaydarov, David R. and Alström, Per and Andersson, Leif and Taylor, Scott A.
Title:Asymmetric introgression reveals the genetic architecture of a plumage trait
Series Name/Journal:Nature Communications
Year of publishing :2021
Volume:12
Article number:1019
Number of Pages:9
Publisher:NATURE RESEARCH
ISSN:2041-1723
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Evolutionary Biology
URN:NBN:urn:nbn:se:slu:epsilon-p-111549
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111549
Additional ID:
Type of IDID
DOI10.1038/s41467-021-21340-y
Web of Science (WoS)000626746500004
ID Code:23335
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Breeding and Genetics
Deposited By: SLUpub Connector
Deposited On:23 Apr 2021 08:23
Metadata Last Modified:23 Apr 2021 08:31

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