Control of sweet potato Fusarium wilt and black rot by endophytic Bacillus velezensis with improved lipopeptide production.

ABSTRACT:

Background

Sweet potato (Ipomoea batatas) production is threatened by fungal diseases like Fusarium wilt and black rot, causing yield losses. Remedies like fungicides pose environmental and health risks, prompting the need for sustainable biocontrol solutions.

Results

In this study, an endophytic bacterium strain CMML21-49 isolated from sweet potato roots in Naju-si, Korea exhibited strong in vitro antifungal activity against Fusarium oxysporum, Ceratocystis fimbriata, Sclerotinia sclerotiorum, and Rhizoctonia solani. Based on 16S rRNA and gyrB gene sequencing, the strain CMML21-49 was identified as Bacillus velezensis. Lipopeptides (bacillomycin D, fengycin A, surfactin A) were identified by UPLC-QTOF-MS and these crude lipopeptides drove the antifungal effects, achieving s

SUBMITTER: Lee JG 

PROVIDER: S-EPMC12492898 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature