Morphology and Molecular Phylogeny of Pseudocyrtohymena koreana n. g., n. sp and Antarctic Neokeronopsis asiatica Foissner et al., 2010 (Ciliophora, Sporadotrichida), with a Brief Discussion of the Cyrtohymena Undulating Membranes Pattern SCIE SCOPUS

Cited 22 time in WEB OF SCIENCE Cited 23 time in Scopus
Title
Morphology and Molecular Phylogeny of Pseudocyrtohymena koreana n. g., n. sp and Antarctic Neokeronopsis asiatica Foissner et al., 2010 (Ciliophora, Sporadotrichida), with a Brief Discussion of the Cyrtohymena Undulating Membranes Pattern
Author(s)
Jung, Jae-Ho; Park, Kyung-Min; Min, Gi-Sik
Publication Year
2015-05
Abstract
We discovered a new brackish water oxytrichid Pseudocyrtohymena koreana n. g., n. sp. in South Korea and investigated the new species on the basis of morphology, ontogenesis, and 18S rRNA gene sequences. The new genus has the 18 frontal-ventral-transverse cirri of typical oxytrichids with flexible body, cortical granules, Cyrtohymena undulating membranes (UM), and one left and one right marginal cirral row. Ontogenesis of the new species indicated that dorsal kinety anlage 3 stretches within the parental row without any fragmentations (Urosomoida pattern) and exclusively forms all caudal cirri. The new genus is morphologically similar to Cyrtohymena Foissner, 1989, but has the following distinctive features: (i) caudal cirri absent in dorsal kineties 1 and 2 (vs. present in Cyrtohymena); and (ii) dorsal kinety 3 nonfragmented (vs. fragmented in Cyrtohymena). Further, we collected an additional species Neokeronopsis asiatica Foissner etal. 2010, from King George Island, Antarctica, and the species shares the morphology of UM with Cyrtohymena. Herein, we describe the previously unidentified characteristics of N. asiatica (i.e., cortical granules, body flexibility, contractile vacuole, and 18S rRNA gene sequence). In addition, we obtained two 18S rRNA gene sequences from Cyrtohymena muscorum and Parasterkiella thompsoni to expand samples for phylogenetic analysis. Our 18S rRNA gene tree supports the hypothesis that the Cyrtohymena UM pattern might have evolved several times in hypotrichs (e.g., Neokeronopsidae, Oxytrichinae, and Stylonychinae).
ISSN
1066-5234
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2491
DOI
10.1111/jeu.12179
Bibliographic Citation
JOURNAL OF EUKARYOTIC MICROBIOLOGY, v.62, no.3, pp.280 - 297, 2015
Publisher
WILEY
Subject
NOV SPEC. CILIOPHORA; FRESH-WATER CILIATE; RNA GENE-SEQUENCES; HYPOTRICHOUS CILIATE; STYLONYCHIA-MYTILUS; FLAGSHIP CILIATE; SPECTABILIS KAHL; SOIL CILIATE; SPIROTRICHEA; MORPHOGENESIS
Keywords
Brackish water ciliate; King George Island; new genus; South Korea
Type
Article
Language
English
Document Type
Article
Publisher
WILEY
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