Effectiveness of Antagonistic Bacterial Metabolites to Control Rhizoctonia solani on Lettuces and Fusarium oxysporum on Tomatoes
분야
자연과학 > 생물
저자
( Vu Van Hanh ) , ( Quyen Ðinh Thi ) , ( Grosch Rita ) , ( Nguyen Ngoc Dung )
발행기관
한국미생물생명공학회(구 한국산업미생물학회)
간행물정보
한국미생물·생명공학회지 2013년, 제41권 제1호, 70~78페이지(총9페이지)
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05212170.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    Rhizoctonia solani and Fusarium oxysporum cause yield losses in numerous economically important crops. To develop a biocontrol agent, cell free extracellular compounds (ECs) of 5 bacterial strains Burkholdria sp. L1, Pseudomonas sp. L4, Pseudomonas chlororaphis VN391, Bacillus subtilis VN21 and Enterobacter sp. VN99 from Vietnamese fields, which reduced levels of R. solani root rot in lettuces and F. oxysporum root rot in tomatoes, were investigated. In a growth chamber, ECs of all antagonists markedly enhanced the biomass of lettuces (10 to 14.1%) and tomatoes (11.38 to 13.88%). In greenhouses, the disease`s severity on both crops treated with ECs of the antagonists was reduced significantly and biomass losses in the plants decreased markedly. The reduction level of R. solani root rot in lettuces was 75, 66.7, 50, and 16.7% by ECs of strains L1, L4, VN21 and VN391, respectively. The biomass of lettuces increased markedly by 29.13%, 21.67%, and 23.4% by ECs of strains L1, L4 and VN21, respectively. Similarly, the reduction levels of F. oxysporum root rot in tomatoes was 76.3, 75, 41.7 and 25% by ECs of strain L1, L4, VN21 and VN391, respectively, and the biomass was significantly enhanced by 14.42, 12.7 and 13%, respectively. The ECs of strain L1 exhibited the most effective bio-control agents to suppress R. solani and F. oxysporum.
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