ISSN 2736-1756
Advanced Journal of Microbiology Research Vol. 2016
Available online at http://internationalscholarsjournals.org/journal/ajmr
© 2015 International Scholars Journals
Full Length Research Paper
Fingerprinting of repetitive DNA sequences in the genus Anabaena using PCR- based techniques
Anbalagan Ezhilarasi* and Narayanaswamy Anand
Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai–600025, India.
Accepted 23 March, 2015
Abstract
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.
Key words: Anabaena, cyanobacteria, highly iterated palindromic sequences, enterobacterial repetitive intergenic consensus sequences, repetitive extragenic palindromic sequences, polymerase chain reaction.