Fingerprinting of repetitive DNA sequences in the genus Anabaena using PCR- based techniques


Anbalagan Ezhilarasi* and Narayanaswamy Anand

In this study, ten species of Anabaena were used to test the congruence between the traditional morphological classification system and the present molecular classification system. The electrophoretic patterns for 10 cyanobacterial strains belonging to the genera (Anabaena) were used for molecular analysis using the repeated PCR technique. Genetic diversity was assessed using the banding patterns of repetitive DNA sequences including the HIP1 sequences, enterobacterial repetitive intergenic consensus [ERIC] sequences and REP sequences that are present in the cyanobacterial genome. PCR with different sets of repetitive oligonucleotides as primers were used to evaluate the various repetitive DNA sequences. The dendrograms based on the HIP1, ERIC and REP sequences did not show a clear correlation with morphological dendrogram based on traditional classification

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