Phylogenomic analyses support the bifurcation of ciliates into two major clades that differ in properties of nuclear division.
Phylogenomic analyses support the bifurcation of ciliates into two major clades that differ in properties of nuclear division.
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DOI：
10.1016/j.ympev.2013.10.001
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发表时间：
2014-01
影响因子：
4.1
通讯作者：
Katz, Laura A.
中科院分区：
文献类型：
--
作者：
Gao, Feng;Katz, Laura A.
纤毛虫是真核生物的多样性集合，是许多发现的来源，包括自剪接RNA、端粒和反式剪接。虽然纤毛虫形态学的分析已经引起了相对较浅层次的关系，纤毛虫更深层次的进化历史在很大程度上是未知的强大的假设。这在一定程度上是因为迄今为止的研究只集中在一个单一的基因座，小亚基核糖体DNA（SSU-rDNA）。在本研究中，我们使用一个分类丰富的策略，多个基因座的基础上，从基因库和最近完成的转录组，以评估纤毛虫之间的系统发育关系。我们的基因组数据集包括多达537个分类群，所有这些都已被采样的SSU-rDNA和一个子集，其中有LSU-rDNA和多达7个蛋白质编码序列。这些数据的分析支持的分歧，纤毛虫所建议的SSU-rDNA，一个主要的分支定义为具有体细胞大核，与核内微管（Intramacronucleata）和其他分支包含的谱系，要么分裂他们的大核与微管外部的大核或不能分裂他们的大核（Postciliodesmatophora）。这些多基因遗传学提供了一个强大的框架来解释整个纤毛虫生命树的创新进化。
Ciliates are a diverse assemblage of eukaryotes that have been the source of many discoveries including self-splicing RNAs, telomeres and trans-splicing. While analyses of ciliate morphology have given rise to robust hypotheses on relatively shallow level relationships, the deeper evolutionary history of ciliates is largely unknown. This is in part because studies to date have focused on only a single locus, small subunit ribosomal DNA (SSU-rDNA). In the present study, we use a taxon-rich strategy based on multiple loci from GenBank and recently completed transcriptomes to assess deep phylogenetic relationships among ciliates. Our phylogenomic data set includes up to 537 taxa, all of which have been sampled for SSU-rDNA and a subset of which have LSU-rDNA and up to 7 protein-coding sequences. Analyses of these data support the bifurcation of ciliates as suggested by SSU-rDNA, with one major clade defined by having somatic macronuclei that divide with intranuclear microtubules (Intramacronucleata) and the other clade containing lineages that either divide their macronuclei with microtubules external to the macronucleus or are unable to divide their macronuclei (Postciliodesmatophora). These multigene phylogenies provide a robust framework for interpreting the evolution of innovations across the ciliate tree of life.
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DOI：
10.1073/pnas.1110633108
发表时间：
2011-08-16
影响因子：
11.1
作者：
Parfrey, Laura Wegener;Lahr, Daniel J. G.;Katz, Laura A.
通讯作者：
Katz, Laura A.
影响因子：
2.2
作者：
Lynn, DH
通讯作者：
Lynn, DH
影响因子：
2.5
作者：
Struder-Kypke, Michaela C.;Wright, Andre-Denis G.;Lynn, Denis H.
通讯作者：
Lynn, Denis H.
影响因子：
5.8
作者：
Stamatakis, Alexandros
通讯作者：
Stamatakis, Alexandros
影响因子：
2.2
作者：
Hammerschmidt, B;Schlegel, M;Raikov, IB
通讯作者：
Raikov, IB