Evolution of gastropod mitochondrial genome arrangements.
Evolution of gastropod mitochondrial genome arrangements.
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腹足动物线粒体基因组排列的进化。
DOI：
10.1186/1471-2148-8-61
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发表时间：
2008-02-26
影响因子：
3.4
通讯作者：
Zardoya, Rafael
中科院分区：
文献类型：
--
作者：
Grande, Cristina;Templado, Jose;Zardoya, Rafael
腹足类线粒体基因组与其他后生动物如脊椎动物的线粒体基因组相比，表现出异常丰富的基因序列。因此，腹足类线粒体基因组构成了一个很好的模型系统，研究模式，速率和线粒体基因组重排的机制。然而，这种进化的比较分析需要一个强大的系统发育框架的组下的研究，这一直是难以捉摸的腹足类，尽管在过去的二十年中进行的努力。在这里，我们报告了5个腹足类（Pyramidella dolabrata，Ascobulla fragilis，Siphonaria pectinata，Onchidella celtica和Myosotella myosotis）的线粒体基因组的完整核苷酸序列，我们分析了它们与另外10个完整的线粒体基因组，目前在分子数据库中，以重建腹足类的主要谱系之间的系统发育关系。与其他软体动物的线粒体基因组的比较分析，使我们能够描述的分子特征和一般趋势的线粒体基因组组织在腹足类的进化。系统发育重建与常用的方法的系统发育推断（ME，MP，ML，BI）到达一个单一的拓扑结构，这是用来重建组中的线粒体基因重排的进化。腹足类有四个主要的谱系：新腹足类、Veti腹足类、Patellogastropoda和Heterobranchia。新腹足类和黄腹足类是姐妹分类群，还有髌腹足类和异鳃类。这一结果拒绝了衍生的分支Apopastropoda（新腹足目+异鳃亚目）的有效性。Patellogastropoda的位置仍然不清楚，可能是由于长枝吸引偏见。在异鳃亚目中，腹足类中最不均匀的类群，既不是真尾目（因为包括P. dolabrata），也不是肺目（多系），也不是后鳃目（因为包括S. pectinata）恢复为单系群。Vetigastropoda的基因顺序可能代表了腹足类的祖先线粒体基因顺序，我们提出，在腹足类的进化中至少发生了三次主要的重排：一次在新腹足类的祖先中，另一次在Patellogastropoda的祖先中，还有一次在异鳃类的祖先中。
Gastropod mitochondrial genomes exhibit an unusually great variety of gene orders compared to other metazoan mitochondrial genome such as e.g those of vertebrates. Hence, gastropod mitochondrial genomes constitute a good model system to study patterns, rates, and mechanisms of mitochondrial genome rearrangement. However, this kind of evolutionary comparative analysis requires a robust phylogenetic framework of the group under study, which has been elusive so far for gastropods in spite of the efforts carried out during the last two decades. Here, we report the complete nucleotide sequence of five mitochondrial genomes of gastropods (Pyramidella dolabrata, Ascobulla fragilis, Siphonaria pectinata, Onchidella celtica, and Myosotella myosotis), and we analyze them together with another ten complete mitochondrial genomes of gastropods currently available in molecular databases in order to reconstruct the phylogenetic relationships among the main lineages of gastropods. Comparative analyses with other mollusk mitochondrial genomes allowed us to describe molecular features and general trends in the evolution of mitochondrial genome organization in gastropods. Phylogenetic reconstruction with commonly used methods of phylogenetic inference (ME, MP, ML, BI) arrived at a single topology, which was used to reconstruct the evolution of mitochondrial gene rearrangements in the group. Four main lineages were identified within gastropods: Caenogastropoda, Vetigastropoda, Patellogastropoda, and Heterobranchia. Caenogastropoda and Vetigastropoda are sister taxa, as well as, Patellogastropoda and Heterobranchia. This result rejects the validity of the derived clade Apogastropoda (Caenogastropoda + Heterobranchia). The position of Patellogastropoda remains unclear likely due to long-branch attraction biases. Within Heterobranchia, the most heterogeneous group of gastropods, neither Euthyneura (because of the inclusion of P. dolabrata) nor Pulmonata (polyphyletic) nor Opisthobranchia (because of the inclusion S. pectinata) were recovered as monophyletic groups. The gene order of the Vetigastropoda might represent the ancestral mitochondrial gene order for Gastropoda and we propose that at least three major rearrangements have taken place in the evolution of gastropods: one in the ancestor of Caenogastropoda, another in the ancestor of Patellogastropoda, and one more in the ancestor of Heterobranchia.
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影响因子：
5.6
作者：
DESJARDINS, P;MORAIS, R
通讯作者：
MORAIS, R
DOI：
10.1017/s0025315400023377
发表时间：
1949-01-01
影响因子：
1.2
作者：
FRETTER, V;GRAHAM, A
通讯作者：
GRAHAM, A
影响因子：
4
作者：
Boore, JL;Brown, WM
通讯作者：
Brown, WM
影响因子：
2.8
作者：
Dreyer H;Steiner G
通讯作者：
Steiner G
影响因子：
2.8
作者：
Bandyopadhyay, Pradip K.;Stevenson, Bradford J.;Wolstenholme, David R.
通讯作者：
Wolstenholme, David R.