Evolutionary origin of Ceratonova shasta and phylogeny of the marine myxosporean lineage
Language English Country United States Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
25797924
DOI
10.1016/j.ympev.2015.03.004
PII: S1055-7903(15)00059-7
Knihovny.cz E-resources
- Keywords
- Ceratomyxa, Evolutionary trends, Myxozoa, Taxonomy, Topology test,
- MeSH
- Bayes Theorem MeSH
- Biological Evolution * MeSH
- Phylogeny * MeSH
- Models, Genetic MeSH
- Myxozoa classification MeSH
- Likelihood Functions MeSH
- DNA, Ribosomal genetics MeSH
- Sequence Analysis, DNA MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- DNA, Ribosomal MeSH
In order to clarify the phylogenetic relationships among the main marine myxosporean clades including newly established Ceratonova clade and scrutinizing their evolutionary origins, we performed large-scale phylogenetic analysis of all myxosporean species from the marine myxosporean lineage based on three gene analyses and statistical topology tests. Furthermore, we obtained new molecular data for Ceratonova shasta, C. gasterostea, eight Ceratomyxa species and one Myxodavisia species. We described five new species: Ceratomyxa ayami n. sp., C. leatherjacketi n. sp., C. synaphobranchi n. sp., C. verudaensis n. sp. and Myxodavisia bulani n. sp.; two of these formed a new, basal Ceratomyxa subclade. We identified that the Ceratomyxa clade is basal to all other marine myxosporean lineages, and Kudoa with Enteromyxum are the most recently branching clades. Topologies were least stable at the nodes connecting the marine urinary clade, the marine gall bladder clade and the Ceratonova clade. Bayesian inference analysis of SSU rDNA and the statistical tree topology tests suggested that Ceratonova is closely related to the Enteromyxum and Kudoa clades, which represent a large group of histozoic species. A close relationship between Ceratomyxa and Ceratonova was not supported, despite their similar myxospore morphologies. Overall, the site of sporulation in the vertebrate host is a more accurate predictor of phylogenetic relationships than the morphology of the myxospore.
Department of Microbiology Oregon State University Corvallis USA
Faculty of Science University of South Bohemia České Budějovice Czech Republic
Institute of Ocean and Earth Sciences University of Malaya Kuala Lumpur Malaysia
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