Unusual conservation of mitochondrial gene order in Crassostrea oysters: evidence for recent speciation in Asia
文献类型：期刊论文
| 作者 | Ren, Jianfeng ; Liu, Xiao ; Jiang, Feng ; Guo, Ximing ; Liu, Bin |
| 刊名 | BMC EVOLUTIONARY BIOLOGY
 |
| 出版日期 | 2010 |
| 卷号 | 10期号:3页码:394 |
| 关键词 | DNA-SEQUENCE PHYLOGENETIC ANALYSIS GENOME ORGANIZATION MAXIMUM-LIKELIHOOD MYTILUS-EDULIS RIBOSOMAL-RNA EVOLUTION BIVALVIA MUSSEL CHINA |
| ISSN号 | 1471-2148 |
| 通讯作者 | Guo, XM, Rutgers State Univ, Inst Marine & Coastal Sci, Haskin Shellfish Res Lab, Port Norris, NJ 08349 USA |
| 中文摘要 | Background: Oysters are morphologically plastic and hence difficult subjects for taxonomic and evolutionary studies. It is long been suspected, based on the extraordinary species diversity observed, that Asia Pacific is the epicenter of oyster speciation. To understand the species diversity and its evolutionary history, we collected five Crassostrea species from Asia and sequenced their complete mitochondrial (mt) genomes in addition to two newly released Asian oysters (C. iredalei and Saccostrea mordax) for a comprehensive analysis. Results: The six Asian Crassostrea mt genomes ranged from 18,226 to 22,446 bp in size, and all coded for 39 genes (12 proteins, 2 rRNAs and 25 tRNAs) on the same strand. Their genomes contained a split of the rrnL gene and duplication of trnM, trnK and trnQ genes. They shared the same gene order that differed from an Atlantic sister species by as many as nine tRNA changes ( 6 transpositions and 3 duplications) and even differed significantly from S. mordax in protein-coding genes. Phylogenetic analysis indicates that the six Asian Crassostrea species emerged between 3 and 43 Myr ago, while the Atlantic species evolved 83 Myr ago. Conclusions: The complete conservation of gene order in the six Asian Crassostrea species over 43 Myr is highly unusual given the remarkable rate of rearrangements in their sister species and other bivalves. It provides strong evidence for the recent speciation of the six Crassostrea species in Asia. It further indicates that changes in mt gene order may not be strictly a function of time but subject to other constraints that are presently not well understood. |
| 学科主题 | 生物化学与分子生物学 |
| 收录类别 | SCI |
| 语种 | 中文 |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/9842]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Ren, Jianfeng,Liu, Xiao,Jiang, Feng,et al. Unusual conservation of mitochondrial gene order in Crassostrea oysters: evidence for recent speciation in Asia[J]. BMC EVOLUTIONARY BIOLOGY,2010,10(3):394. |
| APA | Ren, Jianfeng,Liu, Xiao,Jiang, Feng,Guo, Ximing,&Liu, Bin.(2010).Unusual conservation of mitochondrial gene order in Crassostrea oysters: evidence for recent speciation in Asia.BMC EVOLUTIONARY BIOLOGY,10(3),394. |
| MLA | Ren, Jianfeng,et al."Unusual conservation of mitochondrial gene order in Crassostrea oysters: evidence for recent speciation in Asia".BMC EVOLUTIONARY BIOLOGY 10.3(2010):394. |
入库方式： OAI收割
来源：新疆生态与地理研究所
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