【摘 要】
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The goose is not only an economically important waterfowl but one with unique characteristics and abilities,such as liver fat deposition and fiber digestion
【机 构】
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Chongqing Academy of Animal Science,Chongqing 402460,P.R.China
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The goose is not only an economically important waterfowl but one with unique characteristics and abilities,such as liver fat deposition and fiber digestion.In this study,we report the de novo whole-genome assemblies of the goose and the swan goose,illuminating the evolutionary relationships among 7 bird species,including the domestic and wild goose,that diverged approximately 3.4~6.3 million years ago(Mya).In contrast to the proximal species of chicken,the expanded and rapidly evolving genes of the goose genome are mainly involved in branches of the metabolism,including energy and amino acid and carbohydrate metabolism.Further integrated analysis of the host genome and gut metagenome indicated that the functional enrichments of genes are most widely shared in glycolysis/gluconeogenesis,starch and sucrose metabolism,propanoate metabolism and the citrate cycle.We speculate that the special physiological capabilities of the goose benefit from the adaptive evolution of the host genome and symbiotic interactions with the gut microbes.
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