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Arctic introgression and chromatin regulation facilitated rapid Qinghai-Tibet Plateau colonization by an avian predator

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posted on 17.11.2022, 04:23 authored by L Hu, J Long, Y Lin, Z Gu, H Su, X Dong, Z Lin, Q Xiao, N Batbayar, B Bold, L Deutschová, S Ganusevich, V Sokolov, A Sokolov, HR Patel, PD Waters, Jennifer GravesJennifer Graves, A Dixon, S Pan, X Zhan
The Qinghai-Tibet Plateau (QTP), possesses a climate as cold as that of the Arctic, and also presents uniquely low oxygen concentrations and intense ultraviolet (UV) radiation. QTP animals have adapted to these extreme conditions, but whether they obtained genetic variations from the Arctic during cold adaptation, and how genomic mutations in non-coding regions regulate gene expression under hypoxia and intense UV environment, remain largely unknown. Here, we assemble a high-quality saker falcon genome and resequence populations across Eurasia. We identify female-biased hybridization with Arctic gyrfalcons in the last glacial maximum, that endowed eastern sakers with alleles conveying larger body size and changes in fat metabolism, predisposing their QTP cold adaptation. We discover that QTP hypoxia and UV adaptations mainly involve independent changes in non-coding genomic variants. Our study highlights key roles of gene flow from Arctic relatives during QTP hypothermia adaptation, and cis-regulatory elements during hypoxic response and UV protection.

History

Publication Date

01/12/2022

Journal

Nature Communications

Volume

13

Issue

1

Pagination

18p.

Publisher

Springer Nature

ISSN

2041-1723

Rights Statement

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