Antibacterial Activity of Paddy Fields Cyanobacteria

B. Digamber Rao; D. Srinivas; O. Padmaja; G. Dayakar

Antibacterial Activity of Paddy Fields Cyanobacteria

B. Digamber Rao ¹, D. Srinivas ¹, O. Padmaja ¹, G. Dayakar ²

Affiliations
1 Department of Botany, Kakatiya University, Warangal-506 009, A.P., India
2 Department of Chemistry, Kakatiya University, Warangal-506 009, A.P., India

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Antibacterial activity of some heterocystous cyanobacteria from paddy fields in Warangal district of Andhra Pradesh was studied. Soil samples were collected from various regions of paddy fields of Warangal and cyanobacteria were isolated. Supernatants and methanolic extracts from biomass of 42 strains of cyanobacteria were isolated and screened against four strains of bacteria. Methanolic extracts and culture supernatants of 6 strains of cyanobacteria exhibited significant antibacterial effect. According to these results, it is concluded that Anabaena and Stegonema species have more potential for producing antimicrobial substance than other strains.