Phylogeny of the anaerobic ciliate genus Sonderia (Protista: Ciliophora: Plagiopylea), including the description of three novel species and a brief revision of the genus
Phylogeny of the anaerobic ciliate genus Sonderia (Protista: Ciliophora: Plagiopylea), including the description of three novel species and a brief revision of the genus
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DOI：
10.1007/s42995-022-00142-1
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发表时间：
2022-11
影响因子：
5.7
通讯作者：
Ran Li;Wenbao Zhuang;Xiaochen Feng;Saleh Al-Farraj;A. Warren;Xiaozhong Hu
中科院分区：
文献类型：
--
作者：
Ran Li;Wenbao Zhuang;Xiaochen Feng;Saleh Al-Farraj;A. Warren;Xiaozhong Hu
厌氧原生生物，特别是纤毛虫，是缺氧或低氧环境的重要组成部分，然而它们的多样性一直被低估。Sonderiais是一个研究较少的属，分布于世界各地，常见于厌氧环境中。本文报道了三个新种Sonderia aposinuatasp.十一月，拟大唇松藻nov.和Sonderia steinisp.十一月，采用显微镜观察和SSU rRNA基因序列测定方法，对采自中国的10个种进行了研究。nov.的主要特征是：体较大，口部新月形，外泌体细长，腹侧有一条缝，背侧有两条缝，颊腔占细胞的前三分之一。十一月。非常相似。但主要区别在于其口部开口位于更靠近细胞前缘和纺锤形的外泌体。nov.是一种淡水种，其特征是颊腔浅，外泌体呈杆状，分布稀疏，有68-79个单动线体动线，在身体两侧形成缝合线。基于小亚基核糖体RNA（SSU rRNA）基因序列数据的系统发育分析支持Sonderidae的单系性，然而，Sonderais paraphyletic。对Sonderiais属作了简要订正，并提供了一个种的鉴定检索表。
Anaerobic protists in general, and ciliates in particular, are important components of anoxic or hypoxic environments, however, their diversity remains underestimated.Sonderiais a poorly studied genus that is distributed worldwide and is commonly found in anaerobic environments. In the present study, the taxonomy and phylogeny of three new species, namelySonderia aposinuatasp. nov.,Sonderia paramacrochilussp. nov. andSonderia steinisp. nov., collected from China, were investigated based on microscopic observations and SSU rRNA gene sequencing methods.Sonderia aposinuatasp. nov. is diagnosed mainly by having a relatively large body size, a crescent-shaped oral opening, numerous slender extrusomes, one suture on the ventral side and two on the dorsal side, and a buccal cavity that occupies the anterior third of the cell.Sonderia paramacrochilussp. nov. closely resemblesS. macrochilusbut differs mainly by its oral opening being located closer to the anterior cell margin and its spindle-shaped extrusomes.Sonderia steinisp. nov. is a freshwater species that can be recognized by its shallow buccal cavity, sparsely distributed rod-shaped extrusomes, and having 68–79 monokinetidal somatic kineties that form sutures on both sides of the body. Phylogenetic analyses based on small subunit ribosomal RNA (SSU rRNA) gene sequence data support the monophyly of the family Sonderiidae, however,Sonderiais paraphyletic. The genusSonderiais briefly revised and a key to the identification of species belonging to this genus is supplied.