Two New Marine Ciliates, Caryotricha rariseta n. sp. and Discocephalus pararotatorius n. sp. (Ciliophora, Spirotrichea), with Phylogenetic Analyses Inferred from the Small Subunit rRNA Gene Sequences

2013 ◽  
Vol 60 (4) ◽  
pp. 388-398 ◽  
Author(s):  
Jiamei Jiang ◽  
Yi Xing ◽  
Miao Miao ◽  
Chen Shao ◽  
Alan Warren ◽  
...  
Keyword(s):  
Phylogenetic Analyses ◽  
Small Subunit ◽  
Rrna Gene ◽  
Small Subunit Rrna ◽  
Gene Sequences ◽  
Marine Ciliates ◽  
Small Subunit Rrna Gene

Morphology and small-subunit rRNA gene sequences of two novel marine ciliates, Metanophrys orientalis spec. nov. and Uronemella sinensis spec. nov. (Protista, Ciliophora, Scuticociliatia), with an improved diagnosis of the genus Uronemella

2013 ◽  
Vol 63 (Pt_9) ◽  
pp. 3515-3523 ◽  
Author(s):  
Xuming Pan ◽  
Mingzhuang Zhu ◽  
Honggang Ma ◽  
Khaled A. S. Al-Rasheid ◽  
Xiaozhong Hu
Keyword(s):  
Body Length ◽  
Phylogenetic Analyses ◽  
Small Subunit ◽  
Contractile Vacuole ◽  
Rrna Gene ◽  
Small Subunit Rrna ◽  
Gene Sequences ◽  
Marine Habitat ◽  
Small Subunit Rrna Gene

The morphology and infraciliature of two novel marine scuticociliates, Metanophrys orientalis spec. nov. and Uronemella sinensis spec. nov., collected from sandy beaches at Qingdao, China, were investigated using live observation and protargol-staining methods. Metanophrys orientalis spec. nov. is distinguished by the following characteristics: marine habitat and a slender to elongate oval body with pointed anterior end and rounded caudal end, in vivo about 25–50 µm long; buccal field about a quarter to a third of body length; nine or ten somatic kineties with dikinetids approximately in anterior half of body, monokinetids in posterior half; membranelles 1 and 2 almost equal in length and composed of two and three longitudinal rows of kinetids respectively; paroral membrane with zigzag structure extending anteriorly to middle portion of membranelle 2; contractile vacuole pore located at posterior end of somatic kinety 1. The genus Uronemella is redefined as follows: marine form with an elongate-elliptical or inverted pear-shaped body; apical plate conspicuous; buccal field about two-thirds of body length, cytostome subequatorially located; oral apparatus Uronema-like; somatic kineties comprising a mixture of dikinetids and monokinetids. Uronemella sinensis spec. nov. is recognized by having an elongate-elliptical body with truncated apical frontal plate, size in vivo about 25–35×15–20 µm, nine or ten somatic kineties, membranelle 1 consisting of two or three basal bodies, contractile vacuole pore at posterior end of somatic kinety 1. This study also compared the small-subunit rRNA gene sequences of these two species with other closely related species to show the sequence divergence, which ranged from 3.53 to 9.60 %. Phylogenetic analyses support the contention that the genus Uronemella is monophyletic, while Metanophrys is non-monophyletic.

Phylogenetic analysis of Blastocystis isolates from different hosts based on the comparison of small-subunit rRNA gene sequences

2003 ◽  
Vol 126 (1) ◽  
pp. 119-123 ◽  
Author(s):  
Christophe Noël ◽  
Corinne Peyronnet ◽  
Delphine Gerbod ◽  
Virginia P Edgcomb ◽  
Pilar Delgado-Viscogliosi ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Small Subunit ◽  
Rrna Gene ◽  
Small Subunit Rrna ◽  
Gene Sequences ◽  
Small Subunit Rrna Gene

Genetic interrelationships of proteolyticClostridium botulinum types A, B, and F and other members of theClostridium botulinum complex as revealed by small-subunit rRNA gene sequences

1994 ◽  
Vol 64 (3-4) ◽  
pp. 273-283 ◽  
Author(s):  
R. A. Hutson ◽  
D. E. Thompson ◽  
P. A. Lawson ◽  
R. P. Schocken-Itturino ◽  
E. C. B�ttger ◽  
...  
Keyword(s):  
Small Subunit ◽  
Rrna Gene ◽  
Small Subunit Rrna ◽  
Gene Sequences ◽  
Small Subunit Rrna Gene

scholarly journals Description of Eurystomatella sinica n. gen., n. sp., with establishment of a new family Eurystomatellidae n. fam. (Protista, Ciliophora, Scuticociliatia) and analyses of its phylogeny inferred from sequences of the small-subunit rRNA gene

2010 ◽  
Vol 60 (2) ◽  
pp. 460-468 ◽  
Author(s):  
Miao Miao ◽  
Yangang Wang ◽  
Weibo Song ◽  
John C. Clamp ◽  
Khaled A. S. Al-Rasheid
Keyword(s):  
New Genus ◽  
Phylogenetic Analyses ◽  
Sister Group ◽  
Small Subunit ◽  
Rrna Gene ◽  
Small Subunit Rrna ◽  
New Family ◽  
Small Subunit Rrna Gene ◽  
The Family ◽  
Great Divergence

Recently, an undescribed marine ciliate was isolated from China. Investigation of its morphology and infraciliature revealed it as an undescribed species representing a new genus, Eurystomatella n. gen., the type of the new family Eurystomatellidae n. fam. The new family is defined by close-set, apically positioned oral membranelles and a dominant buccal field that is surrounded by an almost completely circular paroral membrane. The new genus is defined by having a small oral membranelle 1 (M1), bipartite M2 and well-developed M3, a body surface faintly sculptured with a silverline system in a quadrangular, reticulate pattern and a cytostome located at the anterior third of a large buccal field. The type species of the new genus, Eurystomatella sinica n. sp., is a morphologically unique form that is defined mainly by the combination of a conspicuously flattened body, several caudal cilia, extremely long cilia associated with the buccal apparatus and a contractile vacuole located subcaudally. According to phylogenetic analyses of small-subunit (SSU) rRNA gene sequences, Eurystomatella clusters with the genus Cyclidium, as a sister group to the family Pleuronematidae. The great divergence in both buccal and somatic ciliature between Eurystomatella and all other known scuticociliates supports the establishment of a new family for Eurystomatella.

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