Evolution of the tRNA gene family in mitochondrial genomes of five Meretrix clams (Bivalvia, Veneridae)
文献类型：期刊论文
| 作者 | Wu, XY ; Xiao, S ; Li, XL ; Li, L ; Shi, W ; Yu, ZN |
| 刊名 | GENE
 |
| 出版日期 | 2014 |
| 卷号 | 533期号:1页码:439-446 |
| 关键词 | Mitochondrial genome Gene duplication Gene recruitment Meretrix lyrata tRNA isomerism |
| ISSN号 | 0378-1119 |
| 通讯作者 | carlzyu@scsio.ac.cn |
| 中文摘要 | In contrast to the extreme conservation of nuclear-encoded tRNAs, organization of the mitochondrial (mt) tRNA gene family in invertebrates is highly dynamic and rapidly evolving. While gene duplication and loss, gene isomerism, recruitment, and rearrangements have occurred sporadically in several invertebrate lineages, little is known regarding the pattern of their evolution. Comparisons of invertebrate mt genomes at a generic level can be extremely helpful in investigating evolutionary patterns of variation, as intermediate stages of the process may be identified. Variation of mitochondrial tRNA organization among Meretrix clams provides good materials to investigate mt tRNA evolution. We characterized the complete mt genome of the lyrate Asiatic hard clam Meretrix lyrata, re-annotated tRNAs of four previously sequenced Meretrix clams, and undertook an intensive comparison of tRNA gene families in these clams. Our results 1 provide evidence that the commonly observed duplication of trnM may have occurred independently in different bivalve lineages and, based on the higher degree of trnM gene similarity, may have occurred more recently than expected; 2) suggest that "horizontal" evolution may have played an important role in tRNA gene family evolution based on frequent gene duplications and gene recruitment events; and 3) reveal the first case of isoacceptor "vertical" tRNA gene recruitment (VTGR) and present the first clear evidence that VTGR allows rapid evolution of tRNAs. We identify the trnS(-UCR) gene in Meretrix clams, previously considered missing in this lineage, and speculate that trnS(-UCR) lacking the D-arm in both M. lyrata and Meretrix lamarckii may represent the ancestral status. Phylogenetic analysis based on 13 concatenate protein-coding genes provided opportunities to detect rapidly evolved tRNA genes via VTGR and gene isomerism processes. This study suggests that evolution of the mt tRNA gene family in bivalves is more complex than previously thought and that comparison of several congeneric species is a useful strategy in investigating evolutionary patterns and dynamics of mt tRNA genes. (C) 2013 Elsevier B.V. All rights reserved. |
| 学科主题 | Genetics & Heredity |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [40906077]; Knowledge Innovation Program of the Chinese Academy of Sciences [SQ200804]; earmarked fund for Modern Agro-industry Technology Research System |
| 原文出处 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000327562700057 |
| 公开日期 | 2014-12-11 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/10500]  |
| 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 | Wu, XY,Xiao, S,Li, XL,et al. Evolution of the tRNA gene family in mitochondrial genomes of five Meretrix clams (Bivalvia, Veneridae)[J]. GENE,2014,533(1):439-446. |
| APA | Wu, XY,Xiao, S,Li, XL,Li, L,Shi, W,&Yu, ZN.(2014).Evolution of the tRNA gene family in mitochondrial genomes of five Meretrix clams (Bivalvia, Veneridae).GENE,533(1),439-446. |
| MLA | Wu, XY,et al."Evolution of the tRNA gene family in mitochondrial genomes of five Meretrix clams (Bivalvia, Veneridae)".GENE 533.1(2014):439-446. |
入库方式： OAI收割
来源：南海海洋研究所
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