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Plant Dis

Title:		Volatile Organic Compounds of Bacillus cereus Strain Bc-cm103 Exhibit Fumigation Activity against Meloidogyne incognita
Author(s):		Yin N; Liu R; Zhao JL; Khan RAA; Li Y; Ling J; Liu W; Yang YH; Xie BY; Mao ZC;
Address:		"Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081, China"
Journal Title:		Plant Dis
Year:		2021
Volume:		20210311
Issue:		4
Page Number:		904 - 911
DOI:		10.1094/PDIS-04-20-0783-RE
ISSN/ISBN:		0191-2917 (Print) 0191-2917 (Linking)
Abstract:		"Bacillus cereus strain Bc-cm103 shows nematicidal activity and, therefore, has been used as a biological control agent to control the root-knot nematode Meloidogyne incognita. However, it remains unknown whether volatile organic compounds (VOCs) produced by B. cereus strain Bc-cm103 are effective in biocontrol against M. incognita. Therefore, in this study, we investigated the activity of Bc-cm103 VOCs against M. incognita. The B. cereus strain Bc-cm103 significantly repelled the second-stage juveniles (J2s) of M. incognita. In vitro evaluation of VOCs produced by the fermentation of Bc-cm103 in a three-compartment Petri dish revealed the mortality rates of M. incognita J2s as 90.8% at 24 h and 97.2% at 48 h. Additionally, evaluation of the ability of Bc-cm103 VOCs to suppress M. incognita infection in a double-layered pot test showed that root galls on cucumber roots decreased by 46.1%. Furthermore, 21 VOCs were identified from strain Bc-cm103 by solid-phase microextraction gas chromatography-mass spectrometry, including alkanes, alkenes, esters, and sulfides. Among them, dimethyl disulfide (30.63%) and S-methyl ester butanethioic acid (30.29%) were reported to have strong nematicidal activity. Together, these results suggest that B. cereus strain Bc-cm103 exhibits fumigation activity against M. incognita"
Keywords:		Animals Bacillus cereus Fumigation *Solanum lycopersicum *Tylenchoidea *Volatile Organic Compounds/pharmacology Meloidogyne incognita biological fumigation repellence volatile organic compounds (VOCs);
Notes:		"MedlineYin, Nan Liu, Rui Zhao, Jian-Long Khan, Raja Asad Ali Li, Yan Ling, Jian Liu, Wei Yang, Yu-Hong Xie, Bing-Yan Mao, Zhen-Chuan eng 2020/11/03 Plant Dis. 2021 Apr; 105(4):904-911. doi: 10.1094/PDIS-04-20-0783-RE. Epub 2021 Mar 11"