LAPSE:2021.0680
Published Article
LAPSE:2021.0680
Antifungal Effect of Volatile Organic Compounds from Bacillus velezensis CT32 against Verticillium dahliae and Fusarium oxysporum
Xinxin Li, Xiuhong Wang, Xiangyuan Shi, Baoping Wang, Meiping Li, Qi Wang, Shengwan Zhang
July 29, 2021
The present study focuses on the inhibitory effect of volatile metabolites released by Bacillus velezensis CT32 on Verticillium dahliae and Fusarium oxysporum, the causal agents of strawberry vascular wilt. The CT32 strain was isolated from maize straw compost tea and identified as B. velezensis based on 16S rRNA gene sequence analysis. Bioassays conducted in sealed plates revealed that the volatile organic compounds (VOCs) produced by the strain CT32 possessed broad-spectrum antifungal activity against eight phytopathogenic fungi. The volatile profile of strain CT32 was obtained by headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). A total of 30 volatile compounds were identified, six of which have not previously been detected in bacteria or fungi: (Z)-5-undecene, decyl formate, 2,4-dimethyl-6-tert-butylphenol, dodecanenitrile, 2-methylpentadecane and 2,2’,5,5’-tetramethyl-1,1’-biphenyl. Pure compounds were tested in vitro for their inhibitory effect on the mycelial growth of V. dahliae and F. oxysporum. Decanal, benzothiazole, 3-undecanone, 2-undecanone, 2-undecanol, undecanal and 2,4-dimethyl-6-tert-butylphenol showed high antifungal activity, with benzothiazole and 2,4-dimethyl-6-tert-butylphenol being the most potent compounds. These results indicate that the VOCs produced by B. velezensis CT32 have the potential to be used as a biofumigant for management of vascular wilt pathogens.
Keywords
Bacillus velezensis, biocontrol, vascular wilt pathogens, volatile organic compounds
Subject
Suggested Citation
Li X, Wang X, Shi X, Wang B, Li M, Wang Q, Zhang S. Antifungal Effect of Volatile Organic Compounds from Bacillus velezensis CT32 against Verticillium dahliae and Fusarium oxysporum. (2021). LAPSE:2021.0680
Author Affiliations
Li X: School of Life Science, Shanxi University, Taiyuan 030006, China; Shanxi Institute of Organic Dryland Farming, Shanxi Agricultural University, Taiyuan 030031, China; Research Center of Modern Agriculture, Shanxi Academy of Agricultural Sciences, Taiyuan 0
Wang X: Shanxi Institute of Organic Dryland Farming, Shanxi Agricultural University, Taiyuan 030031, China; Research Center of Modern Agriculture, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China
Shi X: Shanxi Institute of Organic Dryland Farming, Shanxi Agricultural University, Taiyuan 030031, China; Research Center of Modern Agriculture, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China
Wang B: School of Life Science, Shanxi University, Taiyuan 030006, China; Shanxi Institute of Organic Dryland Farming, Shanxi Agricultural University, Taiyuan 030031, China; Research Center of Modern Agriculture, Shanxi Academy of Agricultural Sciences, Taiyuan 0
Li M: School of Life Science, Shanxi University, Taiyuan 030006, China
Wang Q: School of Life Science, Shanxi University, Taiyuan 030006, China
Zhang S: School of Life Science, Shanxi University, Taiyuan 030006, China
Journal Name
Processes
Volume
8
Issue
12
Article Number
E1674
Year
2020
Publication Date
2020-12-18
Published Version
ISSN
2227-9717
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PII: pr8121674, Publication Type: Journal Article
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LAPSE:2021.0680
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doi:10.3390/pr8121674
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Jul 29, 2021
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