Volatile Organic Compounds of Bacillus cereus Strain Bc-cm103 Exhibit Fumigation Activity against Meloidogyne incognita
| Autor: | Wei Liu, Yin Nan, Rui Liu, Yan Li, Jian-Long Zhao, Bingyan Xie, Raja Asad Ali Khan, Zhenchuan Mao, Jian Ling, Yuhong Yang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine biology Strain (chemistry) Bacillus cereus Fumigation food and beverages Plant Science biology.organism_classification 01 natural sciences 03 medical and health sciences Horticulture chemistry.chemical_compound 030104 developmental biology Cereus chemistry Meloidogyne incognita Dimethyl disulfide Fermentation Agronomy and Crop Science Terra incognita 010606 plant biology & botany |
| Zdroj: | Plant Disease. 105:904-911 |
| ISSN: | 1943-7692 0191-2917 |
| DOI: | 10.1094/pdis-04-20-0783-re |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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