Tropidoatractidae fam. nov., a Deep Branching Lineage of Metopida (Armophorea, Ciliophora) Found in Diverse Habitats and Possessing Prokaryotic Symbionts
Language English Country Germany Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
29860112
DOI
10.1016/j.protis.2018.04.003
PII: S1434-4610(18)30027-0
Knihovny.cz E-resources
- Keywords
- 18S rRNA gene., Anaerobic ciliates, new species, phylogeny, protargol,
- MeSH
- Anaerobiosis MeSH
- Ciliophora classification cytology isolation & purification microbiology MeSH
- Ecosystem * MeSH
- Microscopy, Fluorescence MeSH
- Phylogeny * MeSH
- Water Microbiology MeSH
- Microscopy, Electron, Scanning MeSH
- Microscopy MeSH
- DNA, Protozoan chemistry genetics MeSH
- DNA, Ribosomal chemistry genetics MeSH
- RNA, Ribosomal, 18S genetics MeSH
- Sequence Analysis, DNA MeSH
- Cluster Analysis MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- DNA, Protozoan MeSH
- DNA, Ribosomal MeSH
- RNA, Ribosomal, 18S MeSH
We report a discovery of a novel family of anaerobic ciliates, Tropidoatractidae fam. nov. Phylogenetic analyses based on the 18S rRNA gene show that the family Tropidoatractidae corresponds to the previously reported clade of environmental sequences closely related to the lineage consisting of orders Metopida and Clevelandellida. The family comprises two genera, Tropidoatractus and Palmarella, and five species, two of which are newly described herein. Tropidoatractidae are cosmopolitan Metopida with sparse somatic and oral ciliature, deep, cup-like buccal cavity, and hyaline cortex with interkinetal ridges. Moreover, all species occur in two morphotypes, slender and stout. They inhabit microoxic or anoxic freshwater, brackish, and marine sediments and possess anaerobic mitochondrion-related organelles and various prokaryotic symbionts. The discovery of Tropidoatractidae provides valuable information about the evolution of Armophorea and gives us insights to the diversity and ecological preferences of anaerobic ciliates in general.
Department of Biological Sciences Boise State University Boise ID 83725 1515 USA
Department of Zoology Faculty of Science Charles University Viničná 7 128 00 Prague Czech Republic
References provided by Crossref.org
Methanogenic symbionts of anaerobic ciliates are host and habitat specific
