کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2834066 1164284 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Variation in ribosomal and mitochondrial DNA sequences demonstrates the existence of intraspecific groups in Paramecium multimicronucleatum (Ciliophora, Oligohymenophorea)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Variation in ribosomal and mitochondrial DNA sequences demonstrates the existence of intraspecific groups in Paramecium multimicronucleatum (Ciliophora, Oligohymenophorea)
چکیده انگلیسی

This is the first phylogenetic study of the intraspecific variability within Paramecium multimicronucleatum with the application of two-loci analysis (ITS1–5.8S–ITS2–5′LSU rDNA and COI mtDNA) carried out on numerous strains originated from different continents. The species has been shown to have a complex structure of several sibling species within taxonomic species. Our analysis revealed the existence of 10 haplotypes for the rDNA fragment and 15 haplotypes for the COI fragment in the studied material. The mean distance for all of the studied P. multimicronucleatum sequence pairs was p = 0.025/0.082 (rDNA/COI). Despite the greater variation of the COI fragment, the COI-derived tree topology is similar to the tree topology constructed on the basis of the rDNA fragment. P. multimicronucleatum strains are divided into three main clades. The tree based on COI fragment analysis presents a greater resolution of the studied P. multimicronucleatum strains. Our results indicate that the strains of P. multimicronucleatum that appear in different clades on the trees could belong to different syngens.

Figure optionsDownload as PowerPoint slideHighlights
► The first molecular study of over thirty Paramecium multimicronucleatum strains.
► Application of two-loci analysis (ITS1–5.8S–ITS2–5′LSU rDNA and COI mtDNA).
► The mean distance for all of the studied P. multimicronucleatum sequence pairs was p = 0.025/0.082 (rDNA/COI).
► The strains of P. multimicronucleatum in different clades on the constructed trees could belong to different syngens.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular Phylogenetics and Evolution - Volume 63, Issue 2, May 2012, Pages 500–509
نویسندگان
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