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Screening of actinomycetes
strains for the production of antifungal metabolites
A. Kavitha1, M. Vijayalakshmi1*, P.
Sudhakar2 and G. Narasimha3
1Department
of Botany and Microbiology, Acharya Nagarjuna University,
Guntur – 522 510, A. P., India.
2Centre
for Biotechnology, Acharya Nagarjuna University, Guntur –
522 510, A. P., India.
3Department
of Virology, Sri Venkateswara University, Tirupati, A. P.,
India.
*Corresponding author. E-mail:
muvvavl@yahoo.co.in.
Tel: 0863
– 2293189 Ext. 167 (0); 0863 – 2293378.
Accepted
22 June, 2009 |
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4 different actinomycetes strains (A1, A2, A3 and A4) were
isolated from the laterite soil samples of Guntur region.
Growth pattern and antifungal profiles of the strains were
evaluated against the test fungi such as Aspergillus
flavus, Aspergillus niger, Candida albicans
and Fusarium oxysporum. Based on the cultural,
morphological and physiological characteristics, the strains
A1, A2 and A4 were identified as the species of
Streptomyces while the strain A3 was assigned to
Nocardia. Among the 4 tested strains, Streptomyces
sp. A1 showed strong antifungal activity which may provide a
potent source for antifungal metabolites.
Key
words:
Actinomycetes, Streptomyces, Nocardia,
antimicrobial activity. |
