Molecular phylogeny and ontogeny of a new ciliate genus, Paracladotricha salina n. g., n. sp. (Ciliophora, Hypotrichia).

Molecular phylogeny and ontogeny of a new ciliate genus, Paracladotricha salina n. g., n. sp. (Ciliophora, Hypotrichia).
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新纤毛虫属 Paracladotricha salina n 的分子系统发育和个体发育。

DOI:
10.1111/jeu.12117
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发表时间:
2014-07
期刊:
The Journal of eukaryotic microbiology
影响因子:
--
通讯作者:
Berger H
Berger H
中科院分区:
其他
文献类型:
--
作者:
Shao C;Li L;Zhang Q;Song W;Berger H

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一种下毛纤毛虫,Paracladotricha salina n.例如,在一个实施例中,n.例如,在中国青岛的高盐沃茨水域(盐度约80‰)中发现。其形态和一些主要的个体发育阶段进行了研究和系统发育的位置估计使用标准的方法。Paracladotricha salina的特点是身体柔韧,或多或少细长(大小50-120 × 20-35 μm),口部具一个生殖口科动物,有1个短的和2个长的额腹行,4个大核结节,背动肌1-3几乎完全退化,纤毛系统的几个部分丧失,即口前膜、口旁膜和颊部的纤毛行略微缩短,口后和横突前的腹侧、横突和尾侧纤毛。个体发生是相当简单的:原基II的子代产品和原基III的opisthe从头开始,而原基IV和V的父母行内形成。这种特征的组合需要建立一个新属,Paracladotricha,根据形态学数据,它与Schmidingerothrix和Cladotricha密切相关。小亚基rRNA基因的测序表明,P. salina是,也证明了口腔器,gonostomatids的成员。我们提供了第一个,模糊的假设Gonostomatidae,Cladotrichidae,Schmidingerotrichidae的系统发育关系。然而,由于缺乏这些高等类群模式种的分子数据,它们的有效性和关系仍然模糊。
A hypotrichous ciliate, Paracladotricha salina n. g., n. sp., was discovered in hypersaline waters (salinity about 80‰) from Qingdao, China. Its morphology and some major ontogenetic stages were studied and the phylogenetic position was estimated using standard methods. Paracladotricha salina is characterized by a flexible, more or less slender body (size 50–120 × 20–35 μm), a gonostomatid oral apparatus, one short and two long frontoventral rows, four macronuclear nodules, almost completely reduced dorsal kineties 1–3, and a loss of several parts of the ciliature, namely, the slightly shortened ciliary row of the adoral membranelles, the paroral, and the buccal, the postoral and pretransverse ventral, the transverse, and the caudal cirri. The ontogenesis is rather simple: anlage II of both filial products and anlage III of the opisthe originate de novo, while anlagen IV and V are formed within the parental rows. This combination of features requires the establishment of a new genus, Paracladotricha, which is, according to the morphological data, closely related to Schmidingerothrix and Cladotricha. The small-subunit rRNA gene was sequenced, indicating that P. salina is, as also demonstrated by the oral apparatus, a member of the gonostomatids. We provide a first, vague hypothesis about the phylogenetic relationships of the Gonostomatidae, Cladotrichidae, and Schmidingerotrichidae. However, since molecular data of the type species of these higher taxa are lacking, their validity and relationships remain obscure.
DOI: 10.1016/j.ejop.2010.08.003
发表时间: 2011-01
影响因子: 2.9
作者:
Foissner W;Stoeck T
通讯作者: Stoeck T