Schmidingerothrix extraordinaria nov. gen., nov. spec., a secondarily oligomerized hypotrich (Ciliophora, Hypotricha, Schmidingerotrichidae nov. fam.) from hypersaline soils of Africa.
Schmidingerothrix extraordinaria nov. gen., nov. spec., a secondarily oligomerized hypotrich (Ciliophora, Hypotricha, Schmidingerotrichidae nov. fam.) from hypersaline soils of Africa.
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DOI：
10.1016/j.ejop.2011.11.003
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发表时间：
2012-08
影响因子：
2.9
通讯作者：
Foissner W
中科院分区：
文献类型：
--
作者：
Foissner W
特殊施米丁格丝菌nov.gen.，nov. spec.在纳米比亚和埃及的高盐土壤中发现。用标准方法研究其形态学和个体发育。Schmidingerothrix extraordinaria是一种高度灵活的细长腹毛类，平均大小为90 × 15 μm。它可能喜欢100‰左右的盐度，主要以细菌为食。Schmidingerothrix是不寻常的，有一个磨损的颊唇，三排口前膜，只有一个额卷毛，一个明显的差距之间的正面和腹侧口前膜，和一个小型化的第一额膜，而口旁膜，背刚毛行，颊，横，尾卷毛缺席。个体发育很简单：后口器和额腹纤毛器是重新起源的，而亲代结构参与了原口类纤毛器的发育。这个特殊的组织被用来定义一个新的家庭，Schmidingerotrichidae，这可能是相关的枝鳃科。Schmidingerothrix extraordinaria很可能是一种次级寡聚化的下毛藓，这种减少可能发生在很久以前，因为在个体发育过程中没有留下祖先纤毛的痕迹。简单的纤毛可能是对高盐生境的适应，那里的竞争很低，细菌食物丰富。
Schmidingerothrix extraordinaria nov. gen., nov. spec. was discovered in hypersaline soils from Namibia and Egypt. Its morphology and ontogenesis were studied with standard methods. Schmidingerothrix extraordinaria is a highly flexible, slender hypotrich with an average size of 90 × 15 μm. Likely, it prefers a salinity around 100‰ and feeds mainly on bacteria. Schmidingerothrix is extraordinary in having a frayed buccal lip, three-rowed adoral membranelles, only one frontal cirrus, a distinct gap between frontal and ventral adoral membranelles, and a miniaturized first frontal membranelle, while a paroral membrane, dorsal bristle rows, and buccal, transverse, and caudal cirri are absent. The ontogenesis is simple: the opisthe oral apparatus and frontoventral ciliature originate de novo, while parental structures are involved in the development of the ciliature of the proter. This special organization is used to define a new family, the Schmidingerotrichidae, which is likely related to the Cladotrichidae. Schmidingerothrix extraordinaria is very likely a secondarily oligomerized hypotrich, and the reduction occurred possibly very long ago because no traces of the ancestral ciliature remained in the ontogenetic processes. Possibly, the simple ciliature is an adaptation to highly saline habitats, where competition is low and bacterial food abundant.
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DOI：
10.1016/s0003-9365(81)80004-8
发表时间：
1981-01-01
期刊：
ARCHIV FUR PROTISTENKUNDE
影响因子：
--
作者：
WILBERT, N;KAHAN, D
通讯作者：
KAHAN, D
影响因子：
3.4
作者：
Foissner, Wilhelm;Chao, Anne;Katz, Laura A.
通讯作者：
Katz, Laura A.
影响因子：
2.9
作者：
FOISSNER, W
通讯作者：
FOISSNER, W
影响因子：
3.4
作者：
Foissner, W
通讯作者：
Foissner, W