Antagonistic capacity of dark septate endophytes (DSE) against Ganoderma boninense from oil palm (Elaeis guinensis Jacq.)

Abstract Ganoderma boninense , a causal agent of basal stem rot, as one the major problems in oil palm plantation Indonesia. The potential dark septate endophytes (DSE) biocontrol agents for G. is not widely studied. Therefore, this study aims to screen DSE strains obtain high antagonistic strains. capacity 10 was determined based on growth inhibition dual culture, and volatile compounds challenge against boninense, vitro . Volatile compound profiling selected that showed highest done using Pyrolysis Gas Chromatography-Mass Spectrometry. Among tested, TKC 2.2a had percentage cultures challenge. This strain inhibited better if grown media seven days earlier than simultaneously with boninsense 14 old were 2H-1-Benzopyran-7-ol, 3,4-dihydro-5-methoxy-6-methyl-2-phenyl; 4-Allyl-2,6-dimetho-xyphenol; hexa-decanoic acid, which reported having either antimicrobial or antifungal activities. These results indicate can be candidate palm, depending further research its ability reduce rot symptoms.