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The evolution of an...
The evolution of ancestral and species-specific adaptations in snowfinches at the Qinghai-Tibet Plateau
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- Qu, Yanhua, 1974- (författare)
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
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Chen, Chunhai (författare)
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Chen, Xiumin (författare)
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Hao, Yan (författare)
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She, Huishang (författare)
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Wang, Mengxia (författare)
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- Ericson, Per G P, 1956- (författare)
- Naturhistoriska riksmuseet,Enheten för bioinformatik och genetik
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Lin, Haiyan (författare)
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Cai, Tianlong (författare)
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Song, Gang (författare)
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Jia, Chenxi (författare)
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Chen, Chunyan (författare)
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Zhang, Hailin (författare)
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Li, Jiang (författare)
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Liang, Liping (författare)
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Wu, Tianyu (författare)
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Zhao, Jinyang (författare)
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Gao, Qiang (författare)
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Zhang, Guojie (författare)
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Zhai, Weiwei (författare)
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Zhang, Chi (författare)
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Zhang, Yong E. (författare)
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Lei, Fumin (författare)
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(creator_code:org_t)
- 2021-03-22
- 2021
- Engelska.
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 10.1073/pnas.2012398118:13, s. e2012398118-e2012398118
- Relaterad länk:
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https://www.pnas.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Species in a shared environment tend to evolve similar adaptations under the influence of their phylogenetic context. Using snowfinches, a monophyletic group of passerine birds (Passeridae), we study the relative roles of ancestral and species-specific adaptations to an extreme high-elevation environment, the Qinghai–Tibet Plateau. Our ancestral trait reconstruction shows that the ancestral snowfinch occupied high elevations and had a larger body mass than most nonsnowfinches in Passeridae. Subsequently, this phenotypic adaptation diversified in the descendant species. By comparing high-quality genomes from representatives of the three phylogenetic lineages, we find that about 95% of genes under positive selection in the descendant species are different from those in the ancestor. Consistently, the biological functions enriched for these species differ from those of their ancestor to various degrees (semantic similarity values ranging from 0.27 to 0.5), suggesting that the three descendant species have evolved divergently from the initial adaptation in their common ancestor. Using a functional assay to a highly selective gene, DTL, we demonstrate that the nonsynonymous substitutions in the ancestor and descendant species have improved the repair capacity of ultraviolet-induced DNA damage. The repair kinetics of the DTL gene shows a twofold to fourfold variation across the ancestor and the descendants. Collectively, this study reveals an exceptional case of adaptive evolution to high-elevation environments, an evolutionary process with an initial adaptation in the common ancestor followed by adaptive diversification of the descendant species.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- Multidisciplinary
- Ecosystems and species history
- Ekosystem och arthistoria
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
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Qu, Yanhua, 1974 ...
-
Chen, Chunhai
-
Chen, Xiumin
-
Hao, Yan
-
She, Huishang
-
Wang, Mengxia
-
visa fler...
-
Ericson, Per G P ...
-
Lin, Haiyan
-
Cai, Tianlong
-
Song, Gang
-
Jia, Chenxi
-
Chen, Chunyan
-
Zhang, Hailin
-
Li, Jiang
-
Liang, Liping
-
Wu, Tianyu
-
Zhao, Jinyang
-
Gao, Qiang
-
Zhang, Guojie
-
Zhai, Weiwei
-
Zhang, Chi
-
Zhang, Yong E.
-
Lei, Fumin
-
visa färre...
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- NATURVETENSKAP
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Naturhistoriska riksmuseet