Determining of the Antagonist Effects of Bacteria Againts Botrytis cinerea in Strawberry under In Vitro Conditions

Abstract

Abstract: In this study were investigated the antagonistic activities of bacterial strains isolated from salty soils and Phragmites australis plant in Iğdır province against Botrytis cinerea in strawberry. As a result of the isolations, 89 bacterial strains were obtained and the determination of the bacteria was made by fatty acid methyl ester analysis. Among them, 38 bacteria strains were found to be effective in in vitro tests and it was determined that the strains were inhibited mycelial growth of B. cinerea at different rates when successful strains were evaluated at the genus level, it was determined that Bacillus and Pseudomonas were two of the most important genus. Considering the inhibition rates of the putative antagonists were determined that the most effective strains were Bacillus subtilis MFD2-21 (71.68%) Paenibacillus polymyxa MFD-15 (68.89%) and Paenibacillus apiarus MFD20 (61.93%), respectively. The putative antagonist strain that inhibits mycelial growth of B. cinerea at the lowest rate was determined as Bacillus sphaericus GC subgroup E MFD3-15 (17.36%).