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Peribacillus butanolivorans KJ40, Bacillus zanthoxyli HS1, B. siamensis H30-3와 Pseudomonas sp. BC42에 의한 오이 탄저병, 박과 류 과실썩음병과 오이 덩굴쪼김병의 생물방제 효과검정

Biocontrol Activities of Peribacillus butanolivorans KJ40, Bacillus zanthoxyli HS1, B. siamensis H30-3 and Pseudomonas sp. BC42 on Anthracnose, Bacterial Fruit Blotch and Fusarium Wilt of Cucumber Plants

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Abiotic and biotic stresses have been a serious threat to crop growth and productivity in the agricultural system. In this study, four strains (HS1, H30-3, KJ40, and BC42), which have biological activities related to disease suppression or alleviation of salinity and drought stresses, were tested for broad-spectrum biocontrol activity against anthracnose caused by Colletotrichum orbiculare, a bacterial fruit blotch caused by Acidovorax citrulli, and Fusarium wilt caused by Fusarium oxysporum in cucumber plants. As a result of test, when the four strains were drenched into the soil, anthracnose in cucumber leaves significantly decrease; strain KJ40 suppressed disease incidence by A. citrulli; strain BC42 significantly reduced bacterial fruit blotch and Fusarium wilt compared to control. Therefore, strain KJ40 could be a biocontrol candidate for controlling anthracnose through induced systemic resistance and the disease caused by A. citrulli as well as alleviating drought stress; strain BC42 has broad-spectrum biocontrol activity against anthracnose, Fusarium wilt, and bacterial fruit blotch.

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