DNA Methylation and Transcriptome Profiling Reveal the Role of the Antioxidant Pathway and Lipid Metabolism in Plectropomus leopardus Skin Color Formation
文献类型： 外文期刊
作者： Liu, Yang 1 ; Wang, Linna 1 ; Li, Zhentong 1 ; Li, Linlin 1 ; Ding, Tangtang 1 ; Chen, Shuai 1 ; Duan, Pengfei 1 ; Wang, Xinyi 1 ; Qiu, Yishu 1 ; Ding, Xiaoyu 1 ; Tian, Yongsheng 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao 266071, Peoples R China
2.Minist Agr & Rural Affairs, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Qingdao 266071, Peoples R China
3.Chinese Acad Fishery Sci, Hainan Innovat Res Inst, Sanya 572025, Peoples R China
4.Tianjin Agr Univ, Coll Fisheries, Tianjin 300392, Peoples R China
关键词：
期刊名称：ANTIOXIDANTS （ 影响因子：6.6； 五年影响因子：7.3 ）
ISSN：
年卷期： 2025 年 14 卷 1 期
页码：
收录情况： SCI
摘要： Leopard coral grouper (Plectropomus leopardus), possessing a distinct red body color, is an important species in commercial markets; however, the high ratio of black individuals under intensive cultivation has limited the commercial value of the species. To dissect the regulatory mechanisms underlying the red skin trait in P. leopardus, gene expression and DNA methylation modifications were compared between red and black skin tissues after astaxanthin treatment. Astaxanthin effectively increased the redness value a* and body weight. Multi-omics analyses revealed the crucial roles of pathways related to antioxidants and lipid metabolism, particularly "Tyrosine metabolism", "Melanogenesis", "Fatty acid metabolism", "Fatty acid elongation", and "Biosynthesis of unsaturated acids", in red skin coloration. A molecular network for the regulation of red skin coloration in P. leopardus was constructed, and pmel, tyr, tyrp1a, tyrp1b, dct, slc24a5, wnt1, acsl4, elovl1, elovl6l.1, elovl6l.2, and elovl7 were identified as key genes. Notably, pmel, acsl4, and elovl7 were negatively regulated by differential DNA methylation. Our results provide new insight into the molecular and epigenetic mechanisms of body color variation, representing a significant step towards breeding for the red skin trait in P. leopardus.
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