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Whole-Genome Methylation Sequencing of Large Yellow Croaker (Larimichthys crocea) Liver Under Hypoxia and Acidification Stress

文献类型： 外文期刊

作者： Yue, Yanfeng 1 ; Wang, Yabing 1 ; Zhang, Bianbian 1 ; Zeng, Jiao 1 ; Wang, Qian 1 ; Wang, Cuihua 1 ; Peng, Shiming 1 ;

作者机构： 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Key Lab Marine & Estuarine Fisheries, Minist Agr, Shanghai 200090, Peoples R China

关键词： Large yellow croaker; Larimichthys crocea; Hypoxia; Acidification; Liver; Methylation

期刊名称：MARINE BIOTECHNOLOGY （ 影响因子：3.0； 五年影响因子：3.4 ）

ISSN： 1436-2228

年卷期： 2023 年 25 卷 4 期

页码：

收录情况： SCI

摘要： Large yellow croaker (Larimichthys crocea) is an important aquaculture species in China. This study analysed whole-genome methylation differences in liver tissues of young fish under different hypoxic and acidification conditions. Differentially methylated regions (DMRs) and differentially methylated genes (DMGs) were identified. Gene ontology (GO) and Kyoto encyclopaedia of genes and genomes (KEGG) enrichment analyses of DMGs were conducted to explore the mechanism of coping with hypoxic acidification. The main methylation type was CG, accounting for > 70% of total methylation, significantly higher than CHG and CHH methylation types. GO enrichment analysis of DMGs revealed strong enrichment of nervous system development, cell periphery, plasma membrane, cell junction organisation, cell junction, signalling receptor activity, molecular sensor activity, cell-linked tissue junction organisation, cell-cell adhesion and nervous system development. KEGG enrichment analysis of DMR-related genes identified cell adhesion molecules, cortisol synthesis and secretion and aldosterone synthesis and secretion as the three key pathways regulating the physiological responses to hypoxia and acidification. Long-term hypoxic and acidification stress affected the immune system, nervous system and stress responses of large yellow croaker. Whole-genome sequencing analysis of exposed tissues was used to investigate changes that occur in L. crocea in response to hypoxic and acidic conditions at the DNA methylation level. The findings contribute to our comprehensive understanding of functional methylation in large yellow croaker and will support future research on the response mechanisms of this species under different environmental pressures.

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