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Morphology and Small Subunit rDNA Phylogeny of Two New Marine Urostylid Ciliates, Caudiholosticha marina sp nov and Nothoholosticha flava sp nov (Ciliophora, Hypotrichia)
Li, Ju1,2; Chen, Xumiao1; Xu, Kuidong1
2016-07-01
Source PublicationJOURNAL OF EUKARYOTIC MICROBIOLOGY
Volume63Issue:4Pages:460-470
SubtypeArticle
AbstractTwo marine urostylid ciliates, Caudiholosticha marina sp. nov. and Nothoholosticha flava sp. nov., isolated from intertidal sediment in the Yellow Sea, are investigated using morphological and small subunit rDNA phylogenetic analyses. Caudiholosticha marina is 210-310 mu m 9 40-55 mu m in vivo, and has 10-20 macronuclear nodules, 23-37 midventral cirral pairs extending to 5-8 transverse cirri, and two caudal cirri. It differs from congeners by its marine habitat, larger size, macronuclear arrangement pattern and high number of midventral pairs. Molecular phylogenetic analyses indicate a polyphyly of Caudiholosticha. Nothoholosticha flava is yellow to brownish and 240-320 mu m 9 40-60 mu m sized, and has a bipartite adoral zone, six frontal cirri in atypical bicorona, usually four frontoterminal, one buccal and 5-7 transverse cirri and 28-54 midventral pairs. Phylogenetic analyses allocate N. flava as sister of N. fasciola, type of the genus. The two Nothoholosticha species differ distinctly by the presence/absence of frontoterminal cirri, a feature often used to define genera in the Hypotrichia. However, the SSU rDNA sequence similarity between these two species is 99.3%, which weakens the justification for separating the new isolate at genus level. The taxonomic significance of frontoterminal cirri is discussed based on morphological and molecular data.
KeywordNew Species Ssu Rdna Taxonomy Urostylida
DOI10.1111/jeu.12290
Indexed BySCI
Language英语
WOS IDWOS:000379616400005
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/130949
Collection海洋生物分类与系统演化实验室
海洋生物标本馆
Affiliation1.Chinese Acad Sci, Inst Oceanol, Dept Marine Organism Taxon & Phylogeny, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Ju,Chen, Xumiao,Xu, Kuidong. Morphology and Small Subunit rDNA Phylogeny of Two New Marine Urostylid Ciliates, Caudiholosticha marina sp nov and Nothoholosticha flava sp nov (Ciliophora, Hypotrichia)[J]. JOURNAL OF EUKARYOTIC MICROBIOLOGY,2016,63(4):460-470.
APA Li, Ju,Chen, Xumiao,&Xu, Kuidong.(2016).Morphology and Small Subunit rDNA Phylogeny of Two New Marine Urostylid Ciliates, Caudiholosticha marina sp nov and Nothoholosticha flava sp nov (Ciliophora, Hypotrichia).JOURNAL OF EUKARYOTIC MICROBIOLOGY,63(4),460-470.
MLA Li, Ju,et al."Morphology and Small Subunit rDNA Phylogeny of Two New Marine Urostylid Ciliates, Caudiholosticha marina sp nov and Nothoholosticha flava sp nov (Ciliophora, Hypotrichia)".JOURNAL OF EUKARYOTIC MICROBIOLOGY 63.4(2016):460-470.
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