Genomic Regions Related to White/Black Tail Feather Color in Dwarf Chickens Identified Using a Genome-Wide Association Study
文献类型: 外文期刊
第一作者: Nie, Changsheng
作者: Nie, Changsheng;Li, Xinghua;Qu, Lujiang;Ning, Zhonghua;Qu, Liang;Wang, Kehua;Jiang, Zhihua;Li, Haiying;Wang, Huie;Wang, Huie;Qu, Changqing
作者机构: China Agr Univ, Coll Anim Sci & Technol, Dept Anim Genet & Breeding, State Key Lab Anim Nutr,Natl Engn Lab Anim Breedi, Beijing, Peoples R China;Chinese Acad Agr Sci, Jiangsu Inst Poultry Sci, Yangzhou, Jiangsu, Peoples R China;Washington State Univ, Dept Anim Sci, Pullman, WA 99164 USA;Xinjiang Agr Univ, Coll Anim Sci, Urumqi, Peoples R China;Tarim Univ, Coll Anim Sci, Alar, Xinjiang, Peoples R China;Xinjiang Prod & Construct Corps, Key Lab Tarim Anim Husb Sci & Technol, Urumqi, Xinjiang, Peoples R China;Fuyang Normal Univ, Engn Technol Res Ctr Antiaging Chinese Herbal Med, Fuyang, Peoples R China
关键词: dwarf chicken; tail feather color; inheritance pattern; genetics; genome-wide association study
期刊名称:FRONTIERS IN GENETICS ( 2019影响因子:3.258; 五年影响因子:4.005 )
年卷期: 2021 年 12 卷
收录情况: SCI
摘要: Although the genetic foundation of chicken body feather color has been extensively explored, that of tail feather color remains poorly understood. In the present study, we used a synthetic chicken dwarf line (DW), derived from hybrids bred between a black tail chicken breed, Rhode Island Red (RIR), and a white tail breed, dwarf layer (DL), to investigate the genetic rules associated white/black tail color. Even though the body feathers are predominantly red, the DW line still comprises individuals with black or white tails after more than 10 generations of self-crossing and selection for the body feather color. We first performed four crosses using the DW chickens, including black-tailed males to females, reciprocal crosses between the black and white, and white males to females to elucidate the inheritance pattern of the white/black tail. We also performed a genome-wide association (GWA) analysis to determine the candidate genomic regions underlying the tail feather color using black tail chickens from the RIR and DW lines and white individuals from the DW line. In the crossing experiment, we found that (i) the white/black tail feather color is independent of body feather color; (ii) the phenotype is a simple autosomal trait; and (iii) the white is dominant to the black in the DW line. The GWA results showed that seven single-nucleotide polymorphisms (SNPs) on chromosome 24 were significantly correlated with tail feather color. The significant region (3.97-4.26 Mb) comprises nine known genes (NECTIN1, THY1, gga-mir-1466, USP2, C1QTNF5, RNF26, MCAM, CBL, and CCDC153) and five anonymous genes. This study revealed that the white/black tail feather trait is autosome-linked in DW chickens. Fourteen genes were found in the significant similar to 0.29 Mb genomic region, and some, especially MCAM, are suggested to play critical roles in the determination of white/black tail feather color. Our research is the first study on the genetics underlying tail feather color and could help further the understanding of feather pigmentation in chickens.
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