Antagonistic potential of two native Streptomyces strains in biocontrol of the major causals of common scab of potato in Iran

Kalantar Zadeh, M., Shahidi Bonjar, G.H., Rashid Farrokhi, P., Ghasemi, A., Aghighi, S. and Mahdavi, M.J. (2006) Antagonistic potential of two native Streptomyces strains in biocontrol of the major causals of common scab of potato in Iran. Asian Journal of Plant Sciences, 5 (1). pp. 5-8.

Abstract

Streptomyces scabies and S. acidiscabies, the two major phytopathogens induce potato common scab in potato growing areas of Iran. Soil Actinomycetes including 174 isolates were assayed for assessing antagonistic activity against Streptomyces scabies and S. acidiscabies. From tested isolates, S. olivaceus, strain 115 and S. plicatus, strain 101 showed high anti-scab activity revealed by bioassays in agar disk and well diffusion methods. For further biological characterizations, the active strains were grown in submerged cultures to determine growth curve and prepare crude extracts. Preliminary greenhouse studies indicated that amending soil with the S. olivaceus, strain 115 and S. plicatus strain 101 reduce crop losses due to the pathogens. Antibacterial activities of both antagonists were of bactericidal type on both pathogens with complete inhibitory effects.

Item Type:	Journal Article
Publisher:	ANSInet
Copyright:	© 2006 Asian Network for Scientific Information.
URI:	http://researchrepository.murdoch.edu.au/id/eprint/14034

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