Control Effect of Bacillus cereus CGMCC4348 against Botrytis cinerea and Its Mechanism

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[Objective]The paper was to study antifungal activity and control mechanism of Bacillus cereus CGMCC4348 against Botrytis cinerea,and further find new methods against the disease.[Method]By quantitative bioassay,in vitro experiment and pot test,the antagonistic protein was extracted with ammonium sulfate precipitation fractionation to determine the control efficiency.EC50of B.cereus CGMCC4348 was 6.19 mg/L.Average controlling effect of B.cereus CGMCC4348 on B.cinerea was 75.8%,equal to the control group which was treated by 50 mg/L pyrimethanil.Bacillus cereus CGMCC4348 had good inhibitory effect against B.cinerea.[Conclusion]The paper provides scientific basis for green control technology against solanaceous vegetable diseases. [Objective] The paper was to study antifungal activity and control mechanism of Bacillus cereus CGMCC 4348 against Botrytis cinerea, and further find new methods against the disease. [Method] By quantitative bioassay, in vitro experiment and pot test, the antagonistic protein was extracted with ammonium sulfate precipitation fractionation to determine the control efficiency. EC50of B. cereus CGMCC4348 was 6.19 mg / L.Average controlling effect of B.cereus CGMCC4348 on B.cinerea was 75.8%, equal to the control group which was treated by 50 mg / L pyrimethanil.Bacillus cereus CGMCC4348 had good inhibitory effect against B.cinerea. [Conclusion] The paper provides scientific basis for green control technology against solanaceous vegetable diseases.
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