TELOMERE LENGTH AND PHYLOGENETIC RELATIONSHIP OF BAIKAL AND SIBERIAN PLANARIANS (TURBELLARIA, TRICLADIDA)
A.G. Koroleva,1 E.V. Evtushenko,2 O.A. Timoshkin,1 A.V. Vershinin,2 S.V. Kirilchik 1
1 Limnological Institute SB RAS, Irkutsk, and 2 Institute of Molecular and Cellular Biology SB RAS, Novosibirsk;
e-mail: takonedo.bb@mail.ru
Dynamics of the telomeric DNA (tDNA) and the phylogeny of the Baikal and Siberian planarians were studied based on the analysis of the 18S rDNA and an β-actin
gene fragments. A relationship between tDNA and the planarians size is demonstrated. Giant planarians with a minor exception have longer tDNA than the little planarians.
Phylogenetic affinity between species that have the stretched tracks of tDNA, big size and similar habitat is traced denoting to possible role of tDNA in the development of the
indefinite regenerative capacity of planarians.
Key words: planarians, Baikal, length of telomere DNA, phylogenetic analysis, actin, 18S rRNA
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