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Phylogenetic studies of four species of ciliate inferred from 16s-like small subunit rRNA gene sequences

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Abstract

The phylogenetic relationships of four ciliate genera (Urostyla, Euplotes, Stylonychia and Pseudokeronopsis), which also are the important environment inspection species, were analyzed by the comparison of small subunit ribosomal RNA gene sequences. Euplotes appeared as an early branching group whose divergence from the hypotrichous line at a deep level was strongly supported by parsimony and matrix analyses. The analyses also supported the hypothesis that there were closely relationship between species in Urostyla and Holosticha. The sibling species Stylonychia mytilus and S. lemnae could be separated by the evolutionary analyses. Furthermore, Pseudokeronopsis rubra had relatively more closely relationship with the species in Holostichidae than that in Urostylidae based on the evolutionary distance value.

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Authors and Affiliations

  1. School of Life Science, East China Normal University, Shanghai, 200062, P. R. China

    Yi-song Li, Yan-ning Niu & Lan-xia Liu

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  1. Yi-song Li
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  2. Yan-ning Niu
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  3. Lan-xia Liu
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Correspondence to Yi-song Li.

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Foundation project: The research was supported by National Natural Science Foundation of China (No. 30470201)

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Li, Ys., Niu, Yn. & Liu, Lx. Phylogenetic studies of four species of ciliate inferred from 16s-like small subunit rRNA gene sequences. Journal of Forestry Research 19, 119–124 (2008). https://doi.org/10.1007/s11676-008-0020-9

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  • DOI: https://doi.org/10.1007/s11676-008-0020-9

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