Activity assessment of tomato endophytic bacteria bioactive compounds for the postharvest biocontrol of Botrytis cinerea

Botrytis cinerea is one of the most important postharvest fungal pathogens causing significant losses in fresh fruits, vegetables and ornamentals. Synthetic fungicides are primarily used to control decay loss, but due their hazardous use recent trend shifting toward safer more eco-friendly alternatives. The antagonistic microorganisms becoming popular throughout world. This study investigated antifungal, plant growth promoting activities identity volatile organic compounds (VOCs) produced by tomato-derived endophytic bacteria strains. capacity selected strains prevent B. infection on tomato fruit through VOCs soluble was also studied. A collection 50 bacterial established from different organs plants sampled six localities Cape Bon region (Tunisia). Despite small geographical scale, complexity abundance communities varied greatly according site origin. Healthy harbor diverse Bacillus Enterobacter genera colonizing mainly leaves with a enrichment vitro dual culture assays showed that 36 % produce antifungal against cinerea. To our knowledge, this first report activity nakamurai, pseudomycoides, proteolyticus, thuringiensis, E. asburiae cloacae About 14 specific effects seedling length or biomass production. five core set seven along strain-specific known such as 3-Methylbutan-1-ol, sulfur-containing compounds, 2-Heptanone Dodecanal. Tomato bio-protection assay strain TR1 produces protective 3-Methylbutan-1-ol major compound which totally suppressed at 0.442 mL L?1 headspace, whereas better protection when applied vegetative cells fruit. These results support potential biocontrol agents reduce cinerea, well promising apply during commercialization