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논문 기본 정보

자료유형
학술저널
저자정보
Kang Tae-An (Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea) Lee GyuDae (Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea) Kim Kihwan (NGS Core Facility, Kyungpook National University, Daegu 41566, Republic of Korea) Hahn Dongyup (Department of Integrative Biology, Kyungpook National University, Daegu 41566, Republic of Korea) Shin Jae-Ho (Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of KoreaDepartment of Integrative Biology, Kyungpook National University, Daegu 41566, Republic of Kor) Kim Won-Chan (Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of KoreaDepartment of Integrative Biology, Kyungpook National University, Daegu 41566, Republic of Kor)
저널정보
한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology Vol.34 No.2
발행연도
2024.2
수록면
296 - 305 (10page)
DOI
10.4014/jmb.2310.10005

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초록· 키워드

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Peach tree gummosis is a botanical anomaly distinguished by the secretion of dark-brown gum from the shoots of peach trees, and Botryosphaeria dothidea has been identified as one of the fungal species responsible for its occurrence. In South Korea, approximately 80% of gummosis cases are linked to infections caused by B. dothidea. In this study, we isolated microbes from the soil surrounding peach trees exhibiting antifungal activity against B. dothidea. Subsequently, we identified several bacterial strains as potential candidates for a biocontrol agent. Among them, Bacillus velezensis KTA01 displayed the most robust antifungal activity and was therefore selected for further analysis. To investigate the antifungal mechanism of B. velezensis KTA01, we performed tests to assess cell wall degradation and siderophore production. Additionally, we conducted reverse transcriptionquantitative polymerase chain reaction (RT-qPCR) analysis based on whole-genome sequencing to confirm the presence of genes responsible for the biosynthesis of lipopeptide compounds, a wellknown characteristic of Bacillus spp., and to compare gene expression levels. Moreover, we extracted lipopeptide compounds using methanol and subjected them to both antifungal activity testing and high-performance liquid chromatography (HPLC) analysis. The experimental findings presented in this study unequivocally demonstrate the promising potential of B. velezensis KTA01 as a biocontrol agent against B. dothidea KACC45481, the pathogen responsible for causing peach tree gummosis.

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