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DNA cleavage of the fungal pathogen and production of antifungal compounds are the possible mechanisms of action of biocontrol agent against . | LitMetric

DNA cleavage of the fungal pathogen and production of antifungal compounds are the possible mechanisms of action of biocontrol agent against .

Mycologia

Department of Plant Pathology, Faculty of Agricultural Sciences, University of the Punjab, Quaid-i-Azam Campus, Lahore 54590, Pakistan.

Published: April 2022

AI Article Synopsis

Article Abstract

In the present study, five species, namely, , and , were identified using ITS (internal transcribed spacer) and β-tubulin markers and screened for their in vitro antagonistic potential against a soil-borne fungal pathogen, , in a dual-culture plate assay. Among all the tested strains, showed the highest antagonistic potential against by reducing its growth up to 57% over control, followed by (42%), (21%), (11%), and (9%). In order to find out the mechanism of action of , genomic DNA of was exposed to secondary metabolites. The findings showed that these metabolites completely degraded the fungal DNA after the 48-h incubation period. To further explore the antifungal mechanism of action of , chloroform and ethyl acetate fractions of its metabolites were subjected to gas chromatography-mass spectrometry (GC-MS) analysis. The major compounds identified in these fractions were 9,12-octadecadienoic acid ()- (25.19%), decane (19.72%), dodecane (18.05%), benzene, nitro- (14.62%), benzene, 1,3,5-trimethyl (14.37%), benzene, 1,4-diethyl (11.62%), 1,2-benzenedicarboxylic acid, mono(2-ethylhexyl) ester (9.02%), and 1-nonadecene (8.99%), which could be responsible for control of growth.

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Source
http://dx.doi.org/10.1080/00275514.2021.1990627DOI Listing

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