Bacillus methylotrophicus strain DR-08 producing natural volatile compound and having antibacterial activity, and use thereof

A plant disease-controlling composition, comprising

• as an active ingredient, one or more selected from the group consisting of an isolated Bacillus sp. strain DR-08 strain (KCTC13060BP) a culture of the strain, a concentrate of the culture, a dried product of the culture, and an extract of the culture,
• wherein the culture comprises a culture medium comprising tryptic soy broth, volatile compounds produced from the strain;
• and optionally a bulking agent,
• wherein the plant disease-controlling composition is in form liquid, granule, or wettable powder,
• wherein the strain produces volatile compounds, and
• wherein the volatile compounds are selected from the group consisting of 2,3,4-trimethylpentane, 2,3,3-trimethylpentane, 2,3-dimethylhexane, 3-methyl-1-phenyl-2-butanone, 2-methylpropanoic acid, 2,2,5-trimethylhexane, 2,2,3-trimethylhexane, 4,4-dimethylpent-2-yl ester formic acid, 2,4-dimethyl-1-heptane, 3-methylbutanoic acid, 2-methylbutanoic acid, and a mixture thereof.