| Phylogenetic position of three Condylostoma species （Protozoa,Ciliophora, Heterotrichea） inferred from the small subunit rRNA gene sequence |
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| 作者姓名： | Wenbo Guo ;Weibo Song ;Khaled A.S. Al-Rasheid ;Chen Shao ;Miao Miao ;Saleh A. Al-Farraj ;Saleh A. Al-Qurishy ;Zigui Chen ;Zhenzhen Yi ;Shan Gao |
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| 作者单位： | [1]Laboratory of Protozoology, Ocean University of China, Minxing Building B, 5 Yushan Road, Qingdao 266003, China; [2]Zoology Department, King Saud University, Riyadh 11451, Saudi Arabia |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China （Grant No. 30670280 and 40676076） and a grant from the Center of Excellence in Biodiversity, King Saud University. |
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| 摘 要： | The systematically poorly known ciliate genus Condylostoma was erected by Vincent in 1826. About 10 morphotypes have been reported, but any molecular investigations concerning this group so far are lacking. In this work, the small subunit ribosomal RNA （SS rRNA） gene of three marine Condylostoma species was sequenced, by which the phylogenetic trees were constructed by distancematrix, maximum parsimony and Bayesian inference methods. The results show that （1） all the trees have similar topologies with high supports; （2） Condylostoma is mostly related to the genus Condylostentor; and （3） three Condylostoma species as well as Condylostentor auriculatus cluster together and form a sister group with other heterotrichs. This is moderately consistent with the assessment of phylogenetic relationships of Condylostoma-related heterotrichs from the morphological information. The phylogenetic relationship of some other related heterotrichs, Peritromus, Folliculina, Stentor and Blepharisma, has been also discussed.
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| 关 键 词： | 原生动物 rRNA基因序列 Condylostoma物种 态模标本 |
Phylogenetic position of three Condylostoma species (Protozoa, Ciliophora, Heterotrichea) inferred from the small subunit rRNA gene sequence |
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| Wenbo Guo,;Weibo Song,;Khaled A.S. Al-Rasheid,;Chen Shao,;Miao Miao,;Saleh A. Al-Farraj,;Saleh A. Al-Qurishy,;Zigui Chen,;Zhenzhen Yi,;Shan Gao.Phylogenetic position of three Condylostoma species (Protozoa, Ciliophora, Heterotrichea) inferred from the small subunit rRNA gene sequence[J].Progress in Natural Science,2008,18(9):1089-1094. |
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| Authors: | Wenbo Guo Weibo Song Khaled A S Al-Rashei Chen Shao Miao Miao Saleh A Al-Farraj Saleh A Al-Qurishy Zigui Chen Zhenzhen Yi Shan Gao |
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| Institution: | a) Laboratory of Protozoology, Ocean University of China, Qingdao 266003, China;
b) Zoology Department, King Saud University, Riyadh 11451, Saudi Arabia |
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| Abstract: | The systematically poorly-known ciliate genus Condylostoma was erected by Vincent in 1826. About 10 morphotypes have been reported but lacked of any molecular investigations concerning this group so far. In this work, the small subunit ribosomal RNA (SS rRNA) gene of three marine Condylostoma species was sequenced, by which the phylogenetic trees were constructed by distance-matrix, maximum parsimony and Bayesian inference methods. The results show that: (1) all the trees have similar topologies with high supports; (2) Condylostoma is mostly related to the genus Condylostentor; and (3) three Condylostoma species as well as Condylostentor auriculatus cluster together and form a sister group with other heterotrichs. This is moderately consistent with the assessment of phylogenetic relationships of Condylostoma-related heterotrichs from the morphological information. The phylogenetic relationship of some other related heterotrichs, Peritromus, Folliculina, Stentor and Blepharisma, has been also discussed. |
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| Keywords: | Marine ciliates Condylostoma SS rRNA Phylogeny Heterotrichs |
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