Taxonomy and Molecular Phylogeny of Two New Urostylid Ciliates (Protozoa: Ciliophora) From Chinese Wetlands and Establishment of a New Genus
| Autor: | Jingyi Dong, Yurui Wang, Tengyue Zhang, Wenya Song, William A. Bourland, Xiaotian Luo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Microbiology (medical) Zoology Hypotrich phylogeny 010603 evolutionary biology 01 natural sciences Microbiology 18S ribosomal RNA 03 medical and health sciences ciliated protists Genus Phylogenetics integrative taxonomy Original Research Phylogenetic tree biology 18S rRNA gene core urostylids biology.organism_classification QR1-502 030104 developmental biology Molecular phylogenetics Taxonomy (biology) Cirrus |
| Zdroj: | Frontiers in Microbiology, Vol 12 (2021) Frontiers in Microbiology |
| DOI: | 10.3389/fmicb.2021.707954/full |
| Popis: | Hypotrich ciliates with evolutionary novelties are continually being discovered, challenging the current taxonomic system and attracting increased attention. In the present work, two new urostylid ciliates, Heterobakuella bergeri gen. nov., sp. nov. and Anteholosticha perezuzae sp. nov., isolated from Chinese wetland samples, were identified based on morphology and 18S rRNA gene sequences. Heterobakuella gen. nov. is defined by three frontal cirri, single buccal cirrus, one parabuccal cirrus, midventral complex composed of cirral pairs and one cirral row, one left and two right marginal cirral rows, transverse and pretransverse cirri present, caudal and frontoterminal cirri absent. Heterobakuella can be easily distinguished from the morphologically most similar genus, Apobakuella, mainly by the single buccal cirrus (vs. one buccal cirral row) and one parabuccal cirrus (vs. several parabuccal cirral rows originated from different anlagen). Phylogenetic analyses show that H. bergeri branches within the clade formed by Bergeriella ovata, Monocoronella carnea, Anteholosticha gracilis, and Neourostylopsis spp., rather than the clade represented by Apobakuella. The other species, A. perezuzae, is mainly characterized by a distinctly slender body shape with an average length:width ratio about 7, distinctively shaped biconcave and greenish cortical granules, as well as one or two pretransverse cirri. Phylogenetic analyses indicate the genus Anteholosticha is non-monophyletic. |
| Databáze: | OpenAIRE |
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