Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (3): 498-506.DOI: 10.3969/j.issn.1004-1524.2022.03.10

• Animal Science • Previous Articles     Next Articles

Screening of genes related to auto-sexing on feather color based on RNA-seq technology

WANG Qiankun1(), ZHANG Xiaohui1,2, PANG Youzhi1,2,*(), QI Yanxia1,2, LEI Ying1,2, BAI Junyan1,2, HU Yunqi1, ZHAO Yiwei1, YUAN Zhiwen1, WANG Tao1   

  1. 1. College of Animal Science, Henan University of Science and Technology, Luoyang 471003, Henan, China
    2. Luoyang Key Laboratory of Animal Genetic and Breeding, Luoyang 471003, Henan,China
  • Received:2021-07-12 Online:2022-03-25 Published:2022-03-30
  • Contact: PANG Youzhi

Abstract:

The phenomenon of auto-sexingby feather color in quail is determined by genes on the sex chromosomes, but the specific molecular mechanism is unknown. In this study, Beijing male white feather quail and female maroon feather quail were selected as research animals.The transcriptome of F1 male and F1 female quails at the 10th day of embryo stage were analyzed by RNA-seq technique, and the key genes associated with feather color were screened and verified by qRT-PCR. The results showed that a total of 38.94 G of raw reads were obtained in RNA-seq, with an average of 6.49 G for each sample. And the Q30 of the six libraries was above 90%, average of GC content was 49.7%.At least 89% of the reads from the tested sample were aligned to the reference genome.A total of 16 013 genes were obtained through database comparison, of which 69 were up-regulated genes and 22 were down-regulated genes.GO enrichment analysis revealed that 13 841 genes were annotated into the GO database, including 78 differentially expressed genes.KEGG enrichment results showed that 22 differentially expressed genes were enriched in 38 pathways. All differentially expressed genes were screened and seven genes related to feather color phenotype were obtained: DCT, MLANA, SLC45A2, TYRP1, TRPM1, FAM174A and KIT. According to the results of qRT-PCR, the candidate genes were highly expressed in maroon feather quail, which was consistent with RNA-seq results.The seven candidate genes obtained in this study might be related to auto-sexing.

Key words: quail, feather color, auto-sexing, transcriptome, gene expression

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