Background Chickens provide globally important livestock products.Understanding the genetic and molecular mechanisms underpinning chicken economic traits is crucial for improving their selective breeding.Influenced by...Background Chickens provide globally important livestock products.Understanding the genetic and molecular mechanisms underpinning chicken economic traits is crucial for improving their selective breeding.Influenced by a combination of genetic and environmental factors,metabolites are the ultimate expression of physiological processes and can provide key insights into livestock economic traits.However,the serum metabolite profile and genetic archi-tecture of the metabolome in chickens have not been well studied.Results Here,comprehensive metabolome detection was performed using non-targeted LC–MS/MS on serum from a chicken advanced intercross line(AIL).In total,7,191 metabolites were used to construct a chicken serum metabo-lomics dataset and to comprehensively characterize the serum metabolism of the chicken AIL population.Regula-tory loci affecting metabolites were identified in a metabolome genome-wide association study(mGWAS).There were 10,061 significant SNPs associated with 253 metabolites that were widely distributed across the entire chicken genome.Many functional genes affect metabolite synthesis,metabolism,and regulation.We highlight the key roles of TDH and AASS in amino acids,and ABCB1 and CD36 in lipids.Conclusions We constructed a chicken serum metabolite dataset containing 7,191 metabolites to provide a refer-ence for future chicken metabolome characterization work.Meanwhile,we used mGWAS to analyze the genetic basis of chicken metabolic traits and metabolites and to improve chicken breeding.展开更多
基金supported by National Natural Science Foundation of China(No.32172719,U2002205,32272862).
文摘Background Chickens provide globally important livestock products.Understanding the genetic and molecular mechanisms underpinning chicken economic traits is crucial for improving their selective breeding.Influenced by a combination of genetic and environmental factors,metabolites are the ultimate expression of physiological processes and can provide key insights into livestock economic traits.However,the serum metabolite profile and genetic archi-tecture of the metabolome in chickens have not been well studied.Results Here,comprehensive metabolome detection was performed using non-targeted LC–MS/MS on serum from a chicken advanced intercross line(AIL).In total,7,191 metabolites were used to construct a chicken serum metabo-lomics dataset and to comprehensively characterize the serum metabolism of the chicken AIL population.Regula-tory loci affecting metabolites were identified in a metabolome genome-wide association study(mGWAS).There were 10,061 significant SNPs associated with 253 metabolites that were widely distributed across the entire chicken genome.Many functional genes affect metabolite synthesis,metabolism,and regulation.We highlight the key roles of TDH and AASS in amino acids,and ABCB1 and CD36 in lipids.Conclusions We constructed a chicken serum metabolite dataset containing 7,191 metabolites to provide a refer-ence for future chicken metabolome characterization work.Meanwhile,we used mGWAS to analyze the genetic basis of chicken metabolic traits and metabolites and to improve chicken breeding.
基金supported by grants from the National Natural Science Foundation of China(81872682)the Young Taishan Scholars Program of Shandong Province of China(tsqn20161046)+2 种基金the Academic Promotion Programme of Shandong First Medical University(2019RC010)the Shandong Province Higher Educational Young and Innovation Technology Supporting Program(2019KJL004)the Doctoral Scientific Research Foundation of Shandong First Medical University.
