Transcriptome-Wide Patterns of the Genetic and Expression Variations in Two Sympatric Schizothoracine Fishes in a Tibetan Plateau Glacier Lake

NWIPB OpenIR

	Transcriptome-Wide Patterns of the Genetic and Expression Variations in Two Sympatric Schizothoracine Fishes in a Tibetan Plateau Glacier Lake
	Chen, Juan; Yang, Liandong; Zhang, Renyi; Uebbing, Severin; Zhang, Cunfang; Jiang, Haifeng; Lei, Yi; Lv, Wenqi; Tian, Fei; Zhao, Kai; He, Shunping
	2020
发表期刊	GENOME BIOLOGY AND EVOLUTION
卷号	12 期号:1
摘要	Sympatric speciation remains a central focus of evolutionary biology. Although some evidence shows speciation occurring in this way, little is known about the gene expression evolution and the characteristics of population genetics as species diverge. Two closely related Gymnocypris fish (Gymnocypris chui and Gymnocypris scieracanthus), which come from a small glacier lake in the Tibetan Plateau, Lake Langcuo, exist a possible incipient sympatric adaptive ecological speciation. We generated large amounts of RNA-Seq data from multiple individuals and tissues from each of the two species and compared gene expression patterns and genetic polymorphisms between them. Ordination analysis separated samples by organ rather than by species. The degree of expression difference between organs within and between species was different. Phylogenetic analyses indicated that the two closely related taxa formed a monophyletic complex. Population structure analysis displayed two distinctly divergent clusters of G. chui and G. scleracanthus populations. By contrast, G. scleracanthus population genetic diversity is higher than that of G. chui. Considerable sites of the two populations were differentiated with a coefficient of F-ST = 0.25-0.50, implying that a small proportion of loci nevertheless exhibited deep divergence in two comparisons. Concomitantly, putatively selected genes during speciation revealed functional categories are enriched in bone morphogenesis, cell growth, neurogenetics, enzyme activity, and binding activity in G. chui population. In contrast, nutrition and localization were highlighted in G. scleracanthus. Collectively, morphological traits and dietary preference combine with genetic variation and expression variation, probably contributed to the incipient speciation of two sympatric populations.
关键词	sympatric speciation transcriptomics gene expression population genetics
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/60460
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	Chen, Juan,Yang, Liandong,Zhang, Renyi,et al. Transcriptome-Wide Patterns of the Genetic and Expression Variations in Two Sympatric Schizothoracine Fishes in a Tibetan Plateau Glacier Lake[J]. GENOME BIOLOGY AND EVOLUTION,2020,12(1).
APA	Chen, Juan.,Yang, Liandong.,Zhang, Renyi.,Uebbing, Severin.,Zhang, Cunfang.,...&He, Shunping.(2020).Transcriptome-Wide Patterns of the Genetic and Expression Variations in Two Sympatric Schizothoracine Fishes in a Tibetan Plateau Glacier Lake.GENOME BIOLOGY AND EVOLUTION,12(1).
MLA	Chen, Juan,et al."Transcriptome-Wide Patterns of the Genetic and Expression Variations in Two Sympatric Schizothoracine Fishes in a Tibetan Plateau Glacier Lake".GENOME BIOLOGY AND EVOLUTION 12.1(2020).