Authors : Sangita Kulkarni and Abhijit Kulkarni
Page Nos : 70-72
Description :
The Rhizosphere soils are rich in microflora. A number of Actinomycetes were found associated with rhizosphere soils of Casuarina plants. A total of 20 different actinomycetes were isolated from the rhizosphere soil of Casuarina equisetifolia L. from different localities of Maharashtra. These included 14 species of Streptomyces, four species of Streptoverticillium and two unidentified Actinomycetes species. The Actinomycetes are rich source of antibiotics. The isolates were tested for their antagonistic properties against phyto-pathogenic and human pathogenic bacteria and fungi. Streptomyces chattanoogensis & Streptomyces violaceochromogenes inhibited the growth of Bacillus subtilis while Streptomyces violaceochramogenes, Streptoverticillium fervens and Actinomycete (1) were antagonistic to all phyto-pathogenic fungi. These experiments clearly indicated that actinomycetes isolated from rhizosphere of Casuarina equiselifolia L. show antagonism against the soil pathogens
Keywords: Actinomycetes, Streptomyces, Antagonism.
