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KMID : 0379120140420040333
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Korean Journal of Mycology
2014 Volume.42 No. 4 p.333 ~ p.340
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Screening of Antagonistic Bacteria having Antifungal Activity against Various Phytopathogens
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Yang Hee-Jong
Jeong Su-Ji
Jeong Seong-Yeop
Jeong Do-Youn
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Abstract
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The aim of this study was to isolate a potential multifunctional biocontrol agent from bacteria for control of multiple plant diseases as an alternative to fungicides. A total of 201 strains were isolated from soil undamaged by repeated cultivation in Sunchang and their ability to produce antibiotics, siderophores and extracellular enzymes such as protease, cellulase and amylase was investigated. Selected strain SCS3 produced cellulose, protease and amylase. This strain also produced siderophores and showed excellent antifungal activity against various phytopathogens. SCS3 was identified as Bacillus subtilis using 16S rRNA sequencing, and named Bacillus subtilis SCS3. Finally, physiological and biochemical characteristics of B. subtilis SCS3 were examined. From the results, B. subtilis SCS3 was found to be a useful multifunctional biocontrol agent against various phytopathogens.
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KEYWORD
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Antagonistic bacteria, Antifungal activity, Bacillus subtilis, Biological control, Phytopathogen
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