we are grateful for financial support from the industrial source technology development program of the ministry of knowledge economy ( 10044909 ) , the next - generation biogreen 21 program ( ssac grant # pj01111803 ) , rda , and the kribb initiative program of south korea .
 abstractbacterial volatiles protect plants either by directly inhibiting a pathogenic fungus or by improving the defense capabilities of plants . 
 the effect of bacterial volatiles on fungal growth was dose - dependent . 
 a low dosage did not have a noticeable effect on botrytis cinerea growth and development , but was sufficient to elicit induced resistance in arabidopsis thaliana . 
 bacterial volatiles displayed negative effects on biofilm formation on a polystyrene surface and in in planta leaf colonization of b. cinerea . 
 however , bacterial volatile - mediated induced resistance was the major mechanism mediating protection of plants from b. cinerea . 
 it was responsible for more than 90% of plant protection in comparison with direct fungal inhibition . 
 our results broaden our knowledge of the role of bacterial volatiles in plant protection . 
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