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Comprehensive Transcriptome Analysis of Different Skin Colors to Evaluate Genes Related to the Production of Pigment in Celestial Goldfish

文献类型： 外文期刊

作者： Li, Rongni 1 ; Sun, Yansheng 1 ; Cui, Ran 1 ; Zhang, Xin 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Fisheries Sci Inst, Beijing 100097, Peoples R China

关键词： celestial goldfish; skin color; transcriptome; pigment production

期刊名称：BIOLOGY-BASEL （ 影响因子：4.2； 五年影响因子：4.4 ）

ISSN：

年卷期： 2023 年 12 卷 1 期

页码：

收录情况： SCI

摘要： Simple Summary Skin color is the result of various pigments synthesized by dyeing groups, while goldfish have a greater variety of pigment cells and a wider range of skin colors. Up to now, several pigment cells have been reported, including melanophores, erythrocytes, xantho-phores, iridophores, leucophores and cyanophores. Therefore, the key genes associated with sieve pigments will provide clues for the production of goldfish with a diversity of skin tones, benefiting the goldfish industry. In this study, high-throughput sequencing was performed on the back skin tissue of celestial goldfish with different skin colors (white, yellow, brown), and it was found that melanin production, tyrosine metabolism pathway, Wnt signaling pathway, and MAPK signaling pathway may play an important role in pigmentation. The study provides valuable data for screening candidate genes involved in pigment formation, and the results of this study will lay a foundation for further study on the expression characteristics and gene network analysis of pigment related genes. Skin color is an important phenotypic feature of vertebrate fitness under natural conditions. Celestial goldfish, a common goldfish breed in China, mainly shows three kinds of skin colors including white, yellow and brown. However, the molecular genetic basis of this phenotype is still unclear. In this study, high-throughput sequencing was carried out on the back skin tissues of celestial goldfish with different skin colors. About 58.46 Gb of original data were generated, filtered and blasted, and 74,297 mRNAs were obtained according to the reference transcriptome. A total of 4653 differentially expressed genes were screened out among the brown, yellow and white groups, and the expression of melanogenesis related genes in brown goldfish was significantly higher than the other two groups. There are 19 common differentially expressed genes among three groups, of which eight genes are related to pigment production, including tyrp1a, slc2a11b, mlana, gch2, loc113060382, loc113079820, loc113068772 and loc113059134. RT-qPCR verified that the expression patterns of randomly selected differentially expressed transcripts were highly consistent with those obtained by RNA sequencing. GO and KEGG annotation revealed that these differentially expressed genes were mostly enriched in pathways of the production of pigment, including melanogenesis, tyrosine metabolism, Wnt signaling pathway, MAPK signaling pathway etc. These results indicated that the external characteristics of goldfish are consistent with the analysis results at transcriptome level. The results of this study will lay a foundation for further study on the expression characteristics and gene network analysis of pigment related genes.

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