New features of Asian Crassostrea oyster mitochondrial genomes: A novel alloacceptor tRNA gene recruitment and two novel ORFs
文献类型：期刊论文
| 作者 | Xia, JJ; Yu, ZN; carlzyu@scsio.ac.cn; Wu, XY; Li, XL; Li, L; Xu, XD |
| 刊名 | GENE
 |
| 出版日期 | 2012 |
| 卷号 | 507期号:2页码:112-118 |
| 关键词 | Crassostrea Mitochondrial Genome Trna Gene Recruitment Oyster Atp8 |
| ISSN号 | 0378-1119 |
| 英文摘要 | A feasible way to perform evolutionary analyses is to compare characters divergent enough to observe significant differences, but sufficiently similar to exclude saturation of the differences that occurred. Thus, comparisons of invertebrate mitochondrial (mt) genomes at low taxonomic levels can be extremely helpful in investigating patterns of variation and evolutionary dynamics of genomes, as intermediate stages of the process may be identified. Fortunately, in this study, we newly sequenced the mt genome of the eighth member of Asian Crassostrea oysters which can provide necessary intermediate characters for us to believe that the variation of Crassostrea mt genomes is considerably greater than previously acknowledged. Several new features of Asian Crassostrea oyster mitochondrial genomes were revealed, and our results are particularly significant as they 1) suggest a novel model of alloacceptor tRNA gene recruitment, namely "vertical" tRNA gene recruitment, which can be successfully used to explain the origination of the unusually additional trnK and trnQ genes (annotated as trnK(2) and trnQ(2) respectively) in the mt genomes of the five Asian oysters, and we speculate that this recruitment progress may be a common phenomenon in the evolution of the tRNA multigene family; 2) reveal the existence of two additional, lineage-specific, mtDNA-encoded genes that may originate from duplication of nad2 followed by rapid evolutionary change. Each of these two genes encodes a unique amino terminal signal peptide, thus each might possess an unknown function; and 3) identify for the first time the atp8 gene in oysters. The present study thus gives further credence to the comparison of congeneric bivalves as a meaningful strategy to investigate mt genomic evolutionary trends in genome organization, tRNA multigene family, and gene loss and/or duplication that are difficult to undertake at higher taxonomic levels. In particular, our study provides new evidence for the identification and characterization of ORFs in the "non-coding region" of animal mt genomes. (c) 2012 Elsevier B.V. All rights reserved. |
| 学科主题 | Genetics & Heredity |
| 资助项目 | LMB |
| 语种 | 英语 |
| WOS记录号 | WOS:000308515000003 |
| 公开日期 | 2013-08-28 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/9766]  |
| 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 |
| 通讯作者 | carlzyu@scsio.ac.cn |
| 推荐引用方式 GB/T 7714 | Xia, JJ,Yu, ZN,carlzyu@scsio.ac.cn,et al. New features of Asian Crassostrea oyster mitochondrial genomes: A novel alloacceptor tRNA gene recruitment and two novel ORFs[J]. GENE,2012,507(2):112-118. |
| APA | Xia, JJ.,Yu, ZN.,carlzyu@scsio.ac.cn.,Wu, XY.,Li, XL.,...&Xu, XD.(2012).New features of Asian Crassostrea oyster mitochondrial genomes: A novel alloacceptor tRNA gene recruitment and two novel ORFs.GENE,507(2),112-118. |
| MLA | Xia, JJ,et al."New features of Asian Crassostrea oyster mitochondrial genomes: A novel alloacceptor tRNA gene recruitment and two novel ORFs".GENE 507.2(2012):112-118. |
入库方式： OAI收割
来源：南海海洋研究所
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