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KMID : 0903520050480010048
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
2005 Volume.48 No. 1 p.48 ~ p.52
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Isolation, Identification and Biological Control Activity of SKU-78 Strain against Ralstonia solanacearum
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Sung Pil-Je
Shin Jeong-Kun
Cho Hong-Bum
Kim Shin-Duk
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Abstract
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Six stains of plant growth promoting rhizobacteria were selected through germinating seed assay and root colonization assay. Among them, SKU-78 strain induced significant suppression of bacterial wilt disease in tomato and pepper plants. Seed treatment followed by soil drench application with this strain resulted in over 60% reduction of bacterial wilt disease compared with the control. It was suggested that SKU-78 strain activated the host defense systems in plants, based on lack of direct antibiosis against pathogen. According to Bergey’s Manual of Systemic Bacteriology and 16S rDNA sequence data, SKU-78 stain was identified as Bacillus sp. SKU-78.
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KEYWORD
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Ralstonia solanacearum, bacterial wilt disease, PGPR, ISR, biocontrol agent
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