Contribution of both positive selection and relaxation of selective constraints to degeneration of flyability during geese domestication.
Flyability is the most discrepant trait between modern-day geese and their wild ancestors, and the degeneration of flyability is a key marker of the successful domestication of wild geese. In light of the relatively short history of domestic geese, intense artificial selection is thought to play an...
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doaj-2f39ddb2a1bf490c97cf81e0f49fb7d42020-11-25T02:47:45ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01129e018532810.1371/journal.pone.0185328Contribution of both positive selection and relaxation of selective constraints to degeneration of flyability during geese domestication.Ye WangYaodong HuDaqian HeShiyi ChenSiming LiDan LanPeng RenZhenping LinYiping LiuFlyability is the most discrepant trait between modern-day geese and their wild ancestors, and the degeneration of flyability is a key marker of the successful domestication of wild geese. In light of the relatively short history of domestic geese, intense artificial selection is thought to play an important role in the degeneration of flyability. However, the underlying mechanism behind this phenomenon has seldom been investigated. In this study, we applied a molecular evolutionary approach to the evaluation of partial breeds of domestic geese in order to look for genes involved in the selection pressure toward degeneration of flyability. The haplotype networks, pairwise fixation index (FST) values, and analysis of molecular variance results all clearly illustrated a population variance between Landes geese and partial Chinese domestic geese. We also detected signatures of positive artificial selection in the COX2 and COX3 genes, and related selection in the HBB gene. Our results support the independent origins of partial European domestic geese and Chinese domestic geese. In addition, both positive artificial selection and the relaxation of functional constraints appeared to play important roles in the degeneration of flyability in domestic geese.http://europepmc.org/articles/PMC5612694?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ye Wang Yaodong Hu Daqian He Shiyi Chen Siming Li Dan Lan Peng Ren Zhenping Lin Yiping Liu |
spellingShingle |
Ye Wang Yaodong Hu Daqian He Shiyi Chen Siming Li Dan Lan Peng Ren Zhenping Lin Yiping Liu Contribution of both positive selection and relaxation of selective constraints to degeneration of flyability during geese domestication. PLoS ONE |
author_facet |
Ye Wang Yaodong Hu Daqian He Shiyi Chen Siming Li Dan Lan Peng Ren Zhenping Lin Yiping Liu |
author_sort |
Ye Wang |
title |
Contribution of both positive selection and relaxation of selective constraints to degeneration of flyability during geese domestication. |
title_short |
Contribution of both positive selection and relaxation of selective constraints to degeneration of flyability during geese domestication. |
title_full |
Contribution of both positive selection and relaxation of selective constraints to degeneration of flyability during geese domestication. |
title_fullStr |
Contribution of both positive selection and relaxation of selective constraints to degeneration of flyability during geese domestication. |
title_full_unstemmed |
Contribution of both positive selection and relaxation of selective constraints to degeneration of flyability during geese domestication. |
title_sort |
contribution of both positive selection and relaxation of selective constraints to degeneration of flyability during geese domestication. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2017-01-01 |
description |
Flyability is the most discrepant trait between modern-day geese and their wild ancestors, and the degeneration of flyability is a key marker of the successful domestication of wild geese. In light of the relatively short history of domestic geese, intense artificial selection is thought to play an important role in the degeneration of flyability. However, the underlying mechanism behind this phenomenon has seldom been investigated. In this study, we applied a molecular evolutionary approach to the evaluation of partial breeds of domestic geese in order to look for genes involved in the selection pressure toward degeneration of flyability. The haplotype networks, pairwise fixation index (FST) values, and analysis of molecular variance results all clearly illustrated a population variance between Landes geese and partial Chinese domestic geese. We also detected signatures of positive artificial selection in the COX2 and COX3 genes, and related selection in the HBB gene. Our results support the independent origins of partial European domestic geese and Chinese domestic geese. In addition, both positive artificial selection and the relaxation of functional constraints appeared to play important roles in the degeneration of flyability in domestic geese. |
url |
http://europepmc.org/articles/PMC5612694?pdf=render |
work_keys_str_mv |
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