Morphology, cell-division, and phylogeny of Schmidingerothrix elongata spec. nov (Ciliophora, Hypotricha), and brief guide to hypotrichs with Gonostomum-like oral apparatus
Morphology, cell-division, and phylogeny of Schmidingerothrix elongata spec. nov (Ciliophora, Hypotricha), and brief guide to hypotrichs with Gonostomum-like oral apparatus
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DOI：
10.1016/j.ejop.2017.11.001
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发表时间：
2018-02-01
影响因子：
2.9
通讯作者：
Berger, Helmut
中科院分区：
文献类型：
--
作者：
Lu, Xiaoteng;Huang, Jie;Berger, Helmut
[中英文摘要]拉长施密丁丝虫Schmidingerothrix argata spc.对在中国北部大庆龙凤湿地盐碱地(20%)土壤中发现的一种新月形吸虫进行了现场观察和蛋白浸渍研究。除其他外，它的特征是无色的皮质颗粒排列成短排，三排前腹圆环，最右侧延伸到最后面，以及4-8个，通常是六个大核结节。细胞分裂的进行与同类细胞一样，证实了背部纤毛的缺失。在基于SSU rDNA的系统发育分析中，长毛链霉菌是盐碱链霉菌+副毛状盐藻的姊妹种。对盐生假单胞菌(Paracladotricha)的滑片类型进行了重新调查，发现了原始描述中的一个错误。由于P.Salina缺乏像Schmidingerothrix spp.一样的背部纤毛，Paracladotricha成为Schmidingerothrix与S.Salina comb的初级主观异名。11月作为第四个物种。对Schmidingerothrix的系统发育分析的回顾表明，它的位置是可变的。然而，结合淋口虫口腔器，可以推测Schmidingerothrix是淋口虫科的成员或近亲。提供了一个属(14)和种(58)的清单，这些属和种具有类似于Schmidingerothrix的淋口器，以及这些属的检索表。(C)2017年爱思唯尔股份有限公司。版权所有。
The hypotrich Schmidingerothrix elongata spec. nov., discovered in saline (20%) soil of the Longfeng Wetland, Daqing, northern China, was studied using live observation and protargol impregnation. It is characterized, inter alia, by colorless cortical granules arranged in short rows, three frontoventral cirral rows with the rightmost extending far posteriorly, and 4-8, usually six macronuclear nodules. Cell division proceeds as in congeners and confirms the lack of dorsal ciliature. In phylogenetic analyses based on SSU rDNA, S. elongata is sister of S. salinarum+Paracladotricha salina. A re-investigation of the type slides of P. salina, type of Paracladotricha, revealed a misobservation in the original description. Since P. salina lacks, like Schmidingerothrix spp., a dorsal ciliature, Paracladotricha becomes a junior, subjective synonym of Schmidingerothrix with S. salina comb. nov. as fourth species. A review of the phylogenetic analyses dealing with Schmidingerothrix shows that its position is variable. However, together with the gonostomatid oral apparatus it can be hypothesized that Schmidingerothrix is a member of the Gonostomatidae or a close relative. A list of genera (14) and species (58) which have - like Schmidingerothrix - a gonostomatid oral apparatus, as well as a key to these genera are provided. (c) 2017 Elsevier GmbH. All rights reserved.