The multilocus RAPD analysis of intergeneric, inter-and intraspecific nuclear genome polymorphism was used for the first time to assess intergeneric, interspecific, and intraspecific polymorphism in Lemnaceae growing on the territory of Russia. The origin of the chosen accessions overlapped with the natural range of duckweeds in Russia. Seventy-five Lemnaceae accessions representing eight species (L. minor, L. gibba, L. turionifera, L. japonica, L. trisulca, L. aequinoctialis, S. polyrhiza, and L. punctata) from three genera (Lemna, Spirodela, and Landoltia), were analyzed. The highest variability levels were revealed in L. minor accessions (0.03–0.20). Species L. trisulca and S. polyrhiza were characterized by values of genetic distance 0.01–0.18 and 0.03–0.16, respectively. The lowest polymorphism levels were detected for L. turionifera (0.01–0.11). The dendrogram based on RAPD data showed that L. aequinoctialis was the most genetically distant species of the genus Lemna. Accessions of species L. turionifera and L. japonica, as well as L. minor and L. gibba, did not form separate species-specific subclusters; rather, they fell into clusters with L. japonica/L. turionifera and L. minor/L. gibba. Accessions of the genera Spirodela and Landoltia formed two separate clusters combined into one group.
Russian Journal of Genetics – Springer Journals
Published: Jan 19, 2011
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