Fungicidal activity of Cladobotryum strains against Corynespora cassiicola.
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Abstract
On the present paper were evaluated the fungicide activity of tree new Cladobotryum strains: C. pinarense (1789), C. semicirculare (1698) y C. virescens (C10/110) preserved on International recognized World Federation Culture Collections (WFCC 853) at INIFAT. The fungal strains were grown on potato and oat mediums by shaking condition for 5, 10 and 15 days. Subsequently, the broth cultures and ethyl acetate extracts obtained were tested against the phytopathogen Corynespora cassiicola by Dual Culture and Bioautographic TLC methods. All the Cladobotryum species had high antagonism against C. cassiicola acting by mycoparasitism, also favored this effect by the higher capacity of the strains to compete for the substrate. The ethyl acetate extracts showed inhibition of growth of the pathogen, in both culture media, on three days of fermentation studied. Those results are good for going on studying in these species referred to obtaining bioproducts to control of "ring spot" or "fire blight" disease on Integrated Management Program (IMP).
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