Local adaptation of Gymnocypris przewalskii (Cyprinidae) on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Zhang, Renyi ; Ludwig, Arne ; Zhang, Cunfang ; Tong, Chao ; Li, Guogang ; Tang, Yongtao ; Peng, Zuogang ; Zhao, Kai |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2015-05-06 |
| 英文摘要 | Divergent selection among environments affects species distributions and can lead to speciation. In this article, we investigated the transcriptomes of two ecotypes of scaleless carp (Gymnocypris przewalskii przewalskii and G. p. ganzihonensis) from the Tibetan Plateau. We used a transcriptome sequencing approach to screen approximately 250,000 expressed sequence tags (ESTs) from the gill and kidney tissues of twelve individuals from the Ganzi River and Lake Qinghai to understand how this freshwater fish has adapted to an ecological niche shift from saline to freshwater. We identified 9,429 loci in the gill transcriptome and 12,034 loci in the kidney transcriptome with significant differences in their expression, of which 242 protein-coding genes exhibited strong positive selection (K-a/K-s > 1). Many of the genes are involved in ion channel functions (e.g., Ca2+-binding proteins), immune responses (e.g., nephrosin) or cellular water absorption functions (e.g., aquaporins). These results have potentially broad importance in understanding shifts from saline to freshwater habitats. Furthermore, this study provides the first transcriptome of G. przewalskii, which will facilitate future ecological genomics studies and aid in the identification of genes underlying adaptation and incipient ecological speciation.; Divergent selection among environments affects species distributions and can lead to speciation. In this article, we investigated the transcriptomes of two ecotypes of scaleless carp (Gymnocypris przewalskii przewalskii and G. p. ganzihonensis) from the Tibetan Plateau. We used a transcriptome sequencing approach to screen approximately 250,000 expressed sequence tags (ESTs) from the gill and kidney tissues of twelve individuals from the Ganzi River and Lake Qinghai to understand how this freshwater fish has adapted to an ecological niche shift from saline to freshwater. We identified 9,429 loci in the gill transcriptome and 12,034 loci in the kidney transcriptome with significant differences in their expression, of which 242 protein-coding genes exhibited strong positive selection (K-a/K-s > 1). Many of the genes are involved in ion channel functions (e.g., Ca2+-binding proteins), immune responses (e.g., nephrosin) or cellular water absorption functions (e.g., aquaporins). These results have potentially broad importance in understanding shifts from saline to freshwater habitats. Furthermore, this study provides the first transcriptome of G. przewalskii, which will facilitate future ecological genomics studies and aid in the identification of genes underlying adaptation and incipient ecological speciation. |
| 源URL | [http://210.75.249.4/handle/363003/5556]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Zhang, Renyi,Ludwig, Arne,Zhang, Cunfang,et al. Local adaptation of Gymnocypris przewalskii (Cyprinidae) on the Tibetan Plateau[J]. SCIENTIFIC REPORTS,2015. |
| APA | Zhang, Renyi.,Ludwig, Arne.,Zhang, Cunfang.,Tong, Chao.,Li, Guogang.,...&Zhao, Kai.(2015).Local adaptation of Gymnocypris przewalskii (Cyprinidae) on the Tibetan Plateau.SCIENTIFIC REPORTS. |
| MLA | Zhang, Renyi,et al."Local adaptation of Gymnocypris przewalskii (Cyprinidae) on the Tibetan Plateau".SCIENTIFIC REPORTS (2015). |
入库方式： OAI收割
来源：西北高原生物研究所
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