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Genomic analysis of indigenous goats in Southwest Asia reveals evidence of ancient adaptive introgression related to desert climate

引用

Zoological Research 2023年第1期44卷 20-29页

作者： Hojjat Asadollahpour Nanaei Yudong Cai Akil Alshawi Jiayue Wen Tanveer Hussain Wei-Wei Fu Nai-Yi Xu abdulameer essa Johannes ALenstra Xihong Wang Yu Jiang Key Laboratory of Animal Genetics Breeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest A&F UniversityYanglingShaanxi 712100China Department of Internal and Preventive Medicine College of Veterinary MedicineUniversity of BaghdadIraqi Ministry of Higher Education and Scientific ResearchBagdad 10090Iraq Department of Molecular Biology Virtual University of PakistanLahore 54000Pakistan Animal Genetics Resources Department Directorate of Animal Resourcesthe Ministry of Iraqi AgricultureBaghdad 10081Iraq Faculty of Veterinary Medicine Utrecht University3508 TD UtrechtThe Netherlands

Understanding how evolutionary pressures related to climate change have shaped the current genetic background of domestic animals is a fundamental pursuit of biology. Here, we generated wholegenome sequencing data from native goat populations in Iraq and Pakistan. Combined with previously published data on modern, ancient(Late Neolithic to Medieval periods), and wild Capra species worldwide, we explored the genetic population structure, ancestry components, and signatures of natural positive selection in native goat populations in Southwest Asia(SWA). Results revealed that the genetic structure of SWA goats was deeply influenced by gene flow from the eastern Mediterranean during the Chalcolithic period, which may reflect adaptation to gradual warming and aridity in the region. Furthermore, comparative genomic analysis revealed adaptive introgression of the KITLG locus from the Nubian ibex(C. nubiana) into African and SWA goats. The frequency of the selected allele at this locus was significantly higher among goat populations located near northeastern Africa. These results provide new insights into the genetic composition and history of goat populations in the SWA region.

关键词： Goat Adaptation KITLG Southwest Asia Nubian ibex

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