Genome-wide characterization of the Elovl gene family in Gymnocypris przewalskii and their potential roles in adaptation to cold temperature

NWIPB OpenIR

	Genome-wide characterization of the Elovl gene family in Gymnocypris przewalskii and their potential roles in adaptation to cold temperature
	Liu, SJ; Li, XH; Qi, DL; Qi, HF; Zhao, K; Tian, F
	2022
发表期刊	COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
卷号	262
摘要	The elongase of the very long-chain fatty acids (Elovls) gene family in fish has more diversity than in other vertebrates, which plays several critical roles in fatty acid synthesis and low-temperature stress adaptation. Gymnocypris przewalskii settles in plateau lakes with cold and resource-poor settings, and the evolution and function of Elovl genes in this fish are unknown. In the study, to identify the Elovl genes in G. przewalskii, the genome-wide identification and phylogenetic analysis of the gene members have been conducted with the expression profile of different tissues under cold stress. Fatty acid compositions, meanwhile, were detected in both the hepatopancreas and skeletal muscle during cold adaptation. A total of 21 Elovl members have been identified from the genome of G. przewalskii, belonging to Elovl1, Elovl2, Elovl4, Elovl5, Elovl6, Elovl7, and Elovl8 subgroups, with conserved ELO domain and four common motifs. Phylogenetic analysis revealed that subfamilies Elovl1 and Elovl7, Elov2, and Elovl5 have a closer genetic relationship, while the Elovl6 class was classed into an independent clade. Synteny analysis showed that whole-genome duplication, tandem duplicates, and gene conversion could drive the Elovls family expansion in G. przewalskii. The Ka/Ks and RELAX analysis showed distinguishing positive selection traces in ORF sequences of gpElovl2. Transcriptional data showed that different gpElovl subtypes exhibited a tissue-specific expression. Subtypes gpElovl1a, gpElovl2 and gpElovl6l were highly expressed induced by cold stress, as well as fatty acid metabolism-related genes, including Acyl-CoA synthetase long-chain gene (Ascl1a-1) and Stearyl-CoA desaturase gene (Scd1a-1). In addition, monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) contents of the hepatopancreas and skeletal muscle were significantly increased under 15-day cold stress. These results provide a better understanding of fish Elovl genes and their roles in cold adaptation.
收录类别	SCIE
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/61093
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Liu, SJ,Li, XH,Qi, DL,et al. Genome-wide characterization of the Elovl gene family in Gymnocypris przewalskii and their potential roles in adaptation to cold temperature[J]. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY,2022,262.
APA	Liu, SJ,Li, XH,Qi, DL,Qi, HF,Zhao, K,&Tian, F.(2022).Genome-wide characterization of the Elovl gene family in Gymnocypris przewalskii and their potential roles in adaptation to cold temperature.COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY,262.
MLA	Liu, SJ,et al."Genome-wide characterization of the Elovl gene family in Gymnocypris przewalskii and their potential roles in adaptation to cold temperature".COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY 262(2022).