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Volume 13
Issue 4
10.3390/microorganisms13040770
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Article

Biocontrol Effect of Bacillus velezensis D7-8 on Potato Common Scab and Its Complete Genome Sequence Analysis

by
Yu Jiang
,
Pengfei He
,
Huihui Kong
,
Pengbo He
,
Yixin Wu
,
Guowen Tang
,
Ping Tang
,
Yining Di
,
Xingyu Li
,
Lufeng Liu
,
Shahzad Munir
* and
Yueqiu He
*
State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China
*
Authors to whom correspondence should be addressed.
Microorganisms 2025, 13(4), 770; https://doi.org/10.3390/microorganisms13040770
Submission received: 3 March 2025 / Revised: 22 March 2025 / Accepted: 25 March 2025 / Published: 28 March 2025
(This article belongs to the Special Issue Microorganisms as Biocontrol Agents in Plant Pathology, 2nd Edition)
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Abstract

Potato common scab, caused by Streptomyces species, is a widespread soil-borne disease that poses a significant threat to potato cultivation globally. In this study, a Bacillus velezensis D7-8 strain was isolated from a potato. This endophytic bacterium exhibited broad-spectrum antifungal activity, and pot trials demonstrated that the D7-8 strain effectively controlled potato common scab with an efficacy of 42.07%. The complete genome sequence of the D7-8 strain was sequenced and subsequently identified as B. velezensis through multiple bioinformatic methods, primarily through structural variation analysis of whole-genome sequences. The machine learning method predicted that the expression profiles of colinear genes among closely related Bacillus species were highly consistent. Metabolite analysis of crude extracts using ultra-high-performance liquid chromatography coupled with quadrupole-Orbitrap high-resolution mass spectrometry (UPLC-Q-Exactive HRMS) revealed that D7-8 produces bioactive compounds, including surfactin and fengycin, both known for their antimicrobial properties. This study elucidates the antagonistic effect of B. velezensis D7-8 against Streptomyces acidiscabies and provides a valuable reference for future research on accurate microbial identification.
Keywords: potato common scab; Bacillus; comparative genomics; structural variation; gene clusters; machining learning potato common scab; Bacillus; comparative genomics; structural variation; gene clusters; machining learning

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MDPI and ACS Style

Jiang, Y.; He, P.; Kong, H.; He, P.; Wu, Y.; Tang, G.; Tang, P.; Di, Y.; Li, X.; Liu, L.; et al. Biocontrol Effect of Bacillus velezensis D7-8 on Potato Common Scab and Its Complete Genome Sequence Analysis. Microorganisms 2025, 13, 770. https://doi.org/10.3390/microorganisms13040770

AMA Style

Jiang Y, He P, Kong H, He P, Wu Y, Tang G, Tang P, Di Y, Li X, Liu L, et al. Biocontrol Effect of Bacillus velezensis D7-8 on Potato Common Scab and Its Complete Genome Sequence Analysis. Microorganisms. 2025; 13(4):770. https://doi.org/10.3390/microorganisms13040770

Chicago/Turabian Style

Jiang, Yu, Pengfei He, Huihui Kong, Pengbo He, Yixin Wu, Guowen Tang, Ping Tang, Yining Di, Xingyu Li, Lufeng Liu, and et al. 2025. "Biocontrol Effect of Bacillus velezensis D7-8 on Potato Common Scab and Its Complete Genome Sequence Analysis" Microorganisms 13, no. 4: 770. https://doi.org/10.3390/microorganisms13040770

APA Style

Jiang, Y., He, P., Kong, H., He, P., Wu, Y., Tang, G., Tang, P., Di, Y., Li, X., Liu, L., Munir, S., & He, Y. (2025). Biocontrol Effect of Bacillus velezensis D7-8 on Potato Common Scab and Its Complete Genome Sequence Analysis. Microorganisms, 13(4), 770. https://doi.org/10.3390/microorganisms13040770

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