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Paper Information

Journal:   IRANIAN JOURNAL OF PLANT PATHOLOGY   December 2003 , Volume 39 , Number 3-4; Page(s) 173 To 174.
 
Paper: 

EVALUATION OF STREPTOMYCES STRAINS AS POTENTIAL BIOLOGICAL CONTROL AGENTS OF PHYTOPHTHORA ERYTHROSEPTICA

 
 
Author(s):  ETEBARIAN H.R.*, SCOTT E.S, WICKS T.J.
 
* Department of Plant Protection, Abourayhan Campus, University of Tehran
 
Abstract: 

Seven strains of Streptomyces obtained from soil surrounding the roots of capsicum were evaluated in vitro and in the greenhouse as potential biological control agents of pink- rot of potato and root and stem rot of tomato. Cell - free metabolites of all strains of Streptomyces inhibited growth of the pathogen, Phytophthora erythroseptica, in vitro. The lesion size on Pontiac potato plant in treatment P. erythroseptica +mixing of all Streptomyces strains (13.25mm) was significantly less than that of P.erythroseptica only (54.75uun). The yields of tubers from Pontiac plants treated with P.erythroseptica and combined Streptomyces isolates (mean of 1(.5 g fresh weight/pot) were significantly greater than in controls inoculated with the pathogen alone (mean of 6.77 g/pot). Control of damping-of of tomato was achieved by inoculating potting mix with Streptomyces strain S2 at the time of planting in a greenhouse‏.‏

 
Keyword(s): BIOCONTROL, PINK ROT, POTATO DISEASE, SOIL BORNE DISEASE, STREPTOMYCES, ACTYNOMYCETES, TOMATO DAMPING-OFF
 
References: 
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