In vitro antagonistic activity of endophytic fungi isolated from two aquatic macrophytes against phytopathogens
Abstract
Endophytic microorganisms are microorganisms that live in plant tissues and occupy intercellular or intracellular spaces. They can occur in the same niche as phytopathogens, so they can be considered biological controllers that confer host protection and resistance to phytopathogens. The aim of this study was to investigate the in vitro antagonistic activity against the phytopathogens Colletotrichum sp. and Alternaria alternata. The in vitro antagonism test was statistically evaluated by analysis of variance (ANOVA) and the mean values were compared with the Scott-Knott test. The endophytic isolates with the highest antagonism indices against the phytopathogen Colletotrichum sp. were AZ13 (Alternaria palandui - KF852593) with 70.87% and AZ26 (Bipolaris papendorfii - KF852597) with 81.15%. Against the phytopathogen Alternaria alternata, endophytes AZ26 (Bipolaris papendorfii - KF852597) and AZ33 (Pestalotiopsis sp. - KF852598) had the highest antagonism indices with 49 and 57 %, respectively. These results suggest that these fungi may be promising for biocontrol of these phytopathogens.References
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