Phylogenetic relationships among amphisbaenian reptiles based on complete mitochondrial genomic sequences
Phylogenetic relationships among amphisbaenian reptiles based on complete mitochondrial genomic sequences
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DOI：
10.1016/j.ympev.2004.05.003
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发表时间：
2004-10-01
影响因子：
4.1
通讯作者：
Boore, JL
中科院分区：
文献类型：
--
作者：
Macey, JR;Papenfuss, TJ;Boore, JL
完整的线粒体基因组序列报告的12个成员在四个家庭的爬行动物组Amphisbaenia。对11，946个比对核苷酸位置（5797个信息）的分析产生了一个强有力的系统发育假说。Rhineuridae是基底科，而双足科是Amphisbaenidae加上Trogonophidae的姊妹分类群。两栖类爬行动物的年龄令人惊讶，比泛古陆的分裂早了2亿年，因为连续的基底类群（Rhineuridae和Bipedidae）位于劳亚大陆的构造区域，而巢状类群（Amphisbaenidae和Trogonophidae）则发现于冈瓦纳地区。彻底的内的Bipedidae采样表明，它不是构造运动的下加利福尼亚远离墨西哥大陆是主要的隔离Bipes种，而是主要的vicariance之间发生的北方和南方组。Amphisbaenian家庭表现出平行的四肢和双足类物种的数量减少，表现出平行的数字。A.提出了一种比较不同基因系统发育信息含量的方法。定义双足类的一个突触形态特征是从典型的脊椎动物线粒体基因排列到trnE和nad6的衍生状态的转变。此外，一个，串联重复的trnT和trnB观察到在双孔双足类假基因形成的模式，不同的人群。报道了第一例通过全基因组测序证实的动物线粒体基因组会聚性重排。相对于大多数脊椎动物，Rhineuridae的nad6，trnE区块与cob，trnT，trnB区块顺序交换，就像鸟类一样。爱思唯尔公司出版
Complete mitochondrial genomic sequences are reported from 12 members in the four families of the reptile group Amphisbaenia. Analysis of 11,946 aligned nucleotide positions (5797 informative) produces a robust phylogenetic hypothesis. The family Rhineuridae is basal and Bipedidae is the sister taxon to the Amphisbaenidae plus Trogonophidae. Amphisbaenian reptiles are surprisingly old, predating the breakup of Pangaea 200 million years before present, because successive basal taxa (Rhineuridae and Bipedidae) are situated in tectonic regions of Laurasia and nested taxa (Amphisbaenidae and Trogonophidae) are found in Gondwanan regions. Thorough sampling within the Bipedidae shows that it is not tectonic movement of Baja California away from the Mexican mainland that is primary in isolating Bipes species, but rather that primary vicariance occurred between northern and southern groups. Amphisbaenian families show parallel reduction in number of limbs and Bipes species exhibit parallel reduction in number of digits. A. measure is developed for comparing the phylogenetic information content of various genes. A synapomorphic trait defining the Bipedidae is a shift from the typical vertebrate mitochondrial gene arrangement to the derived state of trnE and nad6. In addition, a, tandem duplication of trnT and trnP is observed in Bipes biporus with a pattern of pseudogene formation that varies among populations. The first case of convergent rearrangement of the mitochondrial genome among animals demonstrated by complete genomic sequences is reported. Relative to most vertebrates, the Rhineuridae has the block nad6, trnE switched in order with the block cob, trnT, trnP, as they are in birds. Published by Elsevier Inc.