Non-concerted evolution in ribosomal ITS2 sequence in Cynoglossus zanzibarensis (Pleuronectiformes: Cynoglossidae)
文献类型：期刊论文
| 作者 | Gong, Li; Shi, Wei; Yang, Min; Si, Lizhen; Kong, Xiaoyu |
| 刊名 | BIOCHEMICAL SYSTEMATICS AND ECOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 66页码:181-187 |
| 关键词 | nrDNA Recombination Crossing over Pseudogene Dimethyl sulfoxide |
| 通讯作者 | Kong, XY (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Prov Key Lab Appl Marine Biol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510000, Guangdong, Peoples R China. |
| 中文摘要 | The nuclear ribosomal RNA genes (nrDNA) include three rRNA genes (18S, 5.8S, and 28S) and two internal transcribed spacers (ITS1 and ITS2). The lack of variability in nrDNA has been explained as the result of concerted evolution. In fact, many examples of variation have been discovered, suggesting a non-concerted evolution process. There are few studies on ITS2 in teleostean fishes; particularly no reports on flatfishes. In this study, we focused on ITS2 in Zanzibar tonguesole, Cynoglossus zanzibarensis (Pleuronectiformes: Cynoglossidae). Three types of ITS2 sequences (Type A, B, and C) coexisted and mainly differ in length, nucleotide diversity (is), secondary structure, and minimum free energy. Based on these different features, Type B and C were speculated as the putative pseudogenic ITS2 region. Moreover, Type C sequences were detected as recombinant from crossing over between Type A and B sequences. To our knowledge, this is the first report on ITS2 recombination in animal ribosomal RNA genes. The high degree of ITS2 sequence polymorphism at the intraindividual level supported a non-concerted evolution pattern in the C zanzibarensis genome. These results provide useful data for further studies on ITS2 in flatfishes and contribute to polymorphism analyses of ribosomal RNA genes in teleostean fishes. (C) 2016 Elsevier Ltd. All rights reserved. |
| 学科主题 | Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/15400]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 推荐引用方式 GB/T 7714 | Gong, Li,Shi, Wei,Yang, Min,et al. Non-concerted evolution in ribosomal ITS2 sequence in Cynoglossus zanzibarensis (Pleuronectiformes: Cynoglossidae)[J]. BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2016,66:181-187. |
| APA | Gong, Li,Shi, Wei,Yang, Min,Si, Lizhen,&Kong, Xiaoyu.(2016).Non-concerted evolution in ribosomal ITS2 sequence in Cynoglossus zanzibarensis (Pleuronectiformes: Cynoglossidae).BIOCHEMICAL SYSTEMATICS AND ECOLOGY,66,181-187. |
| MLA | Gong, Li,et al."Non-concerted evolution in ribosomal ITS2 sequence in Cynoglossus zanzibarensis (Pleuronectiformes: Cynoglossidae)".BIOCHEMICAL SYSTEMATICS AND ECOLOGY 66(2016):181-187. |
入库方式： OAI收割
来源：南海海洋研究所
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