KMID : 0364820220580040294
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Korean Journal of Microbiology 2022 Volume.58 No. 4 p.294 ~ p.301
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Antagonistic Bacillus having plant growth-promoting abilities and antifungal activity against phytopathogenic fungi
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Seo Ji-Won
Jeong Su-Ji Kim Jin-Won Ryu Myeong-Seon Park Se-Won Yang Hee-Jong Jung Do-Youn
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Abstract
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Lately, the development of microorganism-based biocontrol agents (BCAs) has been suggested as a remarkable alternative to chemical pesticides. In this present study, a total of 157 bacterial strains were isolated, identified, and investigated for availability as a biocontrol agent from farmlands in Jeollabuk- do, Korea. Among the isolated microorganisms, six biocontrol agent candidates that showed superior extracellular enzyme activities (EEA) were selected for further experiments. SRCM 121380 strain was finally selected as a biocontrol agent from additional bioactivity screening experiments such as anti- phytopathogenic fungal, siderophore, indole-3-acetic acid (IAA), and plant growth-promoting (PGP) activity. SRCM 121380 was identified as Bacillus sp. by 16S rRNA gene sequencing analysis, additionally, its sugar fermentation and enzyme properties were investigated. These results suggested that Bacillus sp. SRCM 121380 could be a promising biocontrol agent with superior anti-phytopathogenic fungal and plant growth-promoting properties.
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KEYWORD
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Bacillus sp., antagonistic bacteria, antifungal activity, phytopathogen, plant grow-pronoting
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