The All-Data-Based Evolutionary Hypothesis of Ciliated Protists with a Revised Classification of the Phylum Ciliophora (Eukaryota, Alveolata).
The All-Data-Based Evolutionary Hypothesis of Ciliated Protists with a Revised Classification of the Phylum Ciliophora (Eukaryota, Alveolata).
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基于全数据的纤毛原生生物进化假说以及纤毛门（真核生物、泡孔菌门）的修订分类。
DOI：
10.1038/srep24874
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发表时间：
2016-04-29
影响因子：
4.6
通讯作者：
Song W
中科院分区：
文献类型：
--
作者：
Gao F;Warren A;Zhang Q;Gong J;Miao M;Sun P;Xu D;Huang J;Yi Z;Song W
纤毛门在广泛的生物学研究中发挥着重要作用。然而，由于缺乏足够的分子数据，许多群体的进化关系仍不清楚。在这项研究中，分子数据集得到了扩展，包含了来自 55 个目和所有主要谱系的代表。主要发现是：（1）回收了14类，其中包括一新类Protocruziea n。分类； (2) 除了两个主要分支（Postciliodesmatophora 和 Intramacronucleata）之外，第三个分支（Mesodiniea）被确定为其他两个亚门的基础； (3) 新定义的盘头目 (Discocephalida) 被揭示为整倍体的姐妹进化枝，强烈表明盘头目 (discocephalidas) 与缺毛目 (hypotrichs) 是分离的； (4) 不支持将动植物与周毛分离； (5) Loxocephalida 是主要盾纤毛动物组合的基础，而触毛动物则属于侧线虫目 (Pleuronematida)； (6) 确认了Phyllopharyngea、Karyorelictea、Armophorea、Prostomatea、Plagiopylea、Colpodea和Heterotrichea的单系性； (7) 不明确的属 Askenasia、Cyclotrichium Paraspathidium 和 Plagiocampa 与众所周知的斜壁菌属有密切的关系； (8)支持Rhynchostomatia亚纲的有效性，并且(9)Halteriida和Linconophoria的系统地位仍未解决，因此被认为是螺毛纲中的不确定性。
The phylum Ciliophora plays important roles in a wide range of biological studies. However, the evolutionary relationships of many groups remain unclear due to a lack of sufficient molecular data. In this study, molecular dataset was expanded with representatives from 55 orders and all major lineages. The main findings are: (1) 14 classes were recovered including one new class, Protocruziea n. cl.; (2) in addition to the two main branches, Postciliodesmatophora and Intramacronucleata, a third branch, the Mesodiniea, is identified as being basal to the other two subphyla; (3) the newly defined order Discocephalida is revealed to be a sister clade to the euplotids, strongly suggesting the separation of discocephalids from the hypotrichs; (4) the separation of mobilids from the peritrichs is not supported; (5) Loxocephalida is basal to the main scuticociliate assemblage, whereas the thigmotrichs are placed within the order Pleuronematida; (6) the monophyly of classes Phyllopharyngea, Karyorelictea, Armophorea, Prostomatea, Plagiopylea, Colpodea and Heterotrichea are confirmed; (7) ambiguous genera Askenasia, CyclotrichiumParaspathidium and Plagiocampa show close affiliation to the well known plagiopyleans; (8) validity of the subclass Rhynchostomatia is supported, and (9) the systematic positions of Halteriida and Linconophoria remain unresolved and are thus regarded as incertae sedis within Spirotrichea.