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Transcriptome analysis reveals the regulatory mechanism of myofiber development in male and female black Muscovy duck at different ages

文献类型： 外文期刊

作者： Zhang, Weihong 1 ; Zou, Mengyun 1 ; Xiong, Xiaolan 1 ; Wei, Yue 1 ; Ke, Changling 2 ; Li, Haiqin 1 ; Xie, Jinfang 1 ; Wei, Qipeng 1 ; Huang, Jiangnan 1 ;

作者机构： 1.Jiangxi Acad Agr Sci, Inst Anim Husb & Vet Med, Jiangxi Poultry Engn Technol Res Ctr, Jiangxi Poultry Breeding Engn Lab, Nanchang, Jiangxi, Peoples R China

2.Jiujiang Acad Agr Sci, Jiujiang, Jiangxi, Peoples R China

关键词： black Muscovy duck; myofiber; RNA-seq; meat quality; muscle development

期刊名称：FRONTIERS IN VETERINARY SCIENCE （ 影响因子：2.9； 五年影响因子：3.3 ）

ISSN：

年卷期： 2024 年 11 卷

页码：

收录情况： SCI

摘要： Introduction: Sexual dimorphism in Muscovy ducks results in substantial differences in muscle development potential between males and females, leading to significant variations in growth rates and body weights throughout their development. Methods: This study aimed to investigate the regulatory mechanisms underlying the differences in muscle development between genders in black Muscovy ducks, we analyzed the phenotypic characteristics and transcriptome profiles of breast muscles in male and female black Muscovy ducks at different developmental stages (postnatal days 28, 42, and 70). Results: In the analysis of tissue physical morphology, the results showed that females exhibit larger myofiber diameters and lower myofiber densities compared to males at postnatal day 42 (p < 0.05). The difference becomes more pronounced by day 70, however, no significant difference was observed at postnatal day 28. Transcriptome analysis identified a total of 1,118 unique differentially expressed genes (DEGs) across the various comparison groups. In different growth and development stages of black Muscovy ducks, the DEGs like MYLK4, KIT, CD36, ATP2A1 were significantly associated with myofiber hypertrophy, and key pathways such as AMPK signaling pathway, focal adhesion, and ECM-receptor interactions have been found to be closely associated with muscle size and hypertrophy. In the breast muscles of different sexes black Muscovy ducks, the DEGs such as TPM2, HNRNPK, VCP, ATP2A2, and ANKRD1 may be the reason for the difference in breast muscle size between male and female ducks. Furthermore, key pathways, including the cGMP-PKG signaling pathway, calcium signaling pathway, and hypertrophic cardiomyopathy are also involved in regulating the developmental potential differences in muscle between male and female ducks. Discussion: This study reveals the molecular mechanism regulating the muscle development in male and female black Muscovy ducks at different growth stages, and provides valuable insights into the specific genes responsible for muscle development, laying a theoretical foundation for enhancing the genetic quality of duck meat.

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