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Transcriptome-based studies on the candidate genes related to body color yellowing in channel catfish (Ictalurus punctatus)

文献类型： 外文期刊

作者： Xue, Chunyu 1 ; Mi, Haifeng 2 ; Huang, Dongyu 3 ; Liang, Hualiang 1 ; Aboseif, Ahmed Mohamed 4 ; Ren, Mingchun 1 ; Zhang, Lu 2 ;

作者机构： 1.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Peoples R China

2.Tongwei Agr Dev Co Ltd, Key Lab Nutr & Hlth Culture Aquat Livestock & Poul, Hlth Aquaculture Key Lab Sichuan Prov, Minist Agr & Rural Affairs, Chengdu 610093, Peoples R China

3.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Integrated Rice Fish Farming Ecol, Minist Agr & Rural Affairs, Wuxi 214081, Peoples R China

4.Acad Sci Res & Technol ASRT, Natl Inst Oceanog & Fisheries NIOF, Cairo, Egypt

关键词： Body color yellowing; Oxidative stress; Pigment cells; Transcriptome analysis; Channel catfish

期刊名称：AQUACULTURE REPORTS （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN： 2352-5134

年卷期： 2024 年 39 卷

页码：

收录情况： SCI

摘要： This experiment was aimed to screen the key factors regulating pigment cells and elucidate the potential mechanism of yellowing body color in the channel catfish. Three-channel catfish with all-black body color (NS group) and three channel catfish with yellow body color (YS group) were taken for transcript sequencing analysis using Illumina sequencing technology. The results showed that a total of 2368 significant differentially expressed genes (DEGs) were screened. Compared with the transcription expression genes in the NS group, there were 1003 up-regulated genes and 1365 down-regulated genes in the YS group. Seven DEGs related to pigment regulation were selected for qRT-PCR analysis, and the results confirmed that the transcriptome analysis was reliable. Furthermore, the DEGs were subjected to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis, and the results showed that most of the DEGs were involved in immune response, endocytosis, cell adhesion molecules, etc. Furthermore, analysis of Melanogenesis and Wnt signaling pathways and other pathways with links to pigment regulation obtained by KEGG enrichment revealed that genes that promote melanogenesis, such as etb, plc, and camk2 were significantly down-regulated. Nevertheless, genes that inhibit melanogenesis (nf-kappa b, tnf-alpha, ifn) and genes that promote yellow pigmentation (xdh) were significantly upregulated. In summary, it is hypothesized that oxidative stress is an important factor contributing to the yellowing of the body color of channel catfish, thus causing the expression of genes related to melanogenesis (etb, plc, camk2), yellow pigmentation (xdh), and immune-antioxidant responses (nf-kappa b, tnf-alpha, ifn).

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