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Phylogenetic relationships among six species of Epistylis inferred from 18S-ITS1 sequences
MIAO Wei (缪炜 ); YU Yuhe (余育和); SHEN Yunfen (沈韫芬) & ZHANG Xiyuan (张锡元); Shen, YF, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2002
Source PublicationSCIENCE IN CHINA SERIES C-LIFE SCIENCES
Volume45Issue:3Pages:280-288
AbstractPhylogenetic relationships among six species of Epistylis (i.e. E. plicatilis, E. urceolata, E. chrysemydis, E. hentscheli, E. wenrichi, and E, galea) were investigated using sequences of the first internal transcribed spacer region (ITS-1) of ribosomal DNA (rDNA). Amplified rDNA fragment sequences consisted of 215 or 217 bases of the flanking 18S and 5.8S regions, and the entire ITS-1 region (from 145 to 155 bases). There were more than 33 variable bases between E. galea and the other five species in both the 18S region and the ITS-1 region. The affiliation of them was assessed using Neighbor-joining (NJ), maximum parsimony (MP) and maximum likelihood (ML) analyses. In all the NJ, MP and ML analyses E. galea, whose macronucleic position and shape are distinctly different from those of the other five species, was probably diverged from the ancestor of Epistylis earlier than the other five species. The topology in which E. plicatilis and E, hentscheli formed a strongly supported sister clade to E. urceolata, E. chrysemydis, and E. wenrichi was consistent with variations in the thickness of the peristomial lip. We concluded that the macronucleus and peristomial lip might be the important phylogenetic characteristics within the genus Epistylis.
KeywordEpistylis 18s-its1 Region Phylogenetic Relationships Method In Situ (Prepare Dna From Field-sampled Species For Pcr) Macronucleus
DepartmentChinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; Wuhan Univ, Coll Life Sci, Wuhan 430072, Peoples R China
Subject AreaBiology
Indexed BySCI
WOS IDWOS:000175701400007
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9862
Collection期刊论文
Corresponding AuthorShen, YF, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
MIAO Wei ,YU Yuhe ,SHEN Yunfen ,et al. Phylogenetic relationships among six species of Epistylis inferred from 18S-ITS1 sequences[J]. SCIENCE IN CHINA SERIES C-LIFE SCIENCES,2002,45(3):280-288.
APA MIAO Wei ,YU Yuhe ,SHEN Yunfen ,&Shen, YF, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2002).Phylogenetic relationships among six species of Epistylis inferred from 18S-ITS1 sequences.SCIENCE IN CHINA SERIES C-LIFE SCIENCES,45(3),280-288.
MLA MIAO Wei ,et al."Phylogenetic relationships among six species of Epistylis inferred from 18S-ITS1 sequences".SCIENCE IN CHINA SERIES C-LIFE SCIENCES 45.3(2002):280-288.
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