Volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping system
Abstract Grape downy mildew (Plasmopara viticola) is an air-borne disease and difficult to control. It has been observed that intercropping grapevines (Vitis vinifera) with aromatic plants can effectively suppress the airborne disease and volatile organic compounds (VOCs) from the aromatic plants ar...
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BMC
2025-01-01
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| Series: | Phytopathology Research |
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| Online Access: | https://doi.org/10.1186/s42483-024-00291-4 |
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| author | Weiping Deng Fei Du Rongliang Yang Hanyang Yao Min Yang Xinyue Mei Chen Ye Su Li Yixiang Liu Huichuan Huang Shusheng Zhu |
| author_facet | Weiping Deng Fei Du Rongliang Yang Hanyang Yao Min Yang Xinyue Mei Chen Ye Su Li Yixiang Liu Huichuan Huang Shusheng Zhu |
| author_sort | Weiping Deng |
| collection | DOAJ |
| description | Abstract Grape downy mildew (Plasmopara viticola) is an air-borne disease and difficult to control. It has been observed that intercropping grapevines (Vitis vinifera) with aromatic plants can effectively suppress the airborne disease and volatile organic compounds (VOCs) from the aromatic plants are believed to have antimicrobial activities. In this study, a two-year field trial was established by intercropping grapevine and hoary stock (Matthiola incana) to evaluate the control of grape downy mildew. The field results showed that intercropping effectively suppressed grape downy mildew, particularly during the blooming stage of hoary stock. VOCs from hoary stock plants exhibited a dosage-dependent antimicrobial activity against grape downy mildew. To examine the role of VOCs, hoary stock plants were grown in an enclosed chamber, and VOCs were collected at the time points before and post blooming. The collected VOCs were subjected to gas chromatography-mass spectrometry (GC–MS) analysis and in vitro bioassays. Twenty-four VOCs found from pre-blooming and 36 VOCs from post-blooming hoary stock plants were identified. Seventeen VOCs demonstrated consistent inhibitory activities against P. viticola, including seven terpenoids, five benzenoids, and five aliphatics. Among the 17 VOCs, five were unique to post-blooming hoary stock, while 12 were common to both pre- and post-blooming hoary stock. The antimicrobial VOCs offers a potential eco-friendly alternative to managing downy mildew. |
| format | Article |
| id | doaj-art-b72263df31b748ceb7a6d605150a5f4a |
| institution | Kabale University |
| issn | 2524-4167 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Phytopathology Research |
| spelling | doaj-art-b72263df31b748ceb7a6d605150a5f4a2025-01-19T12:12:14ZengBMCPhytopathology Research2524-41672025-01-017111310.1186/s42483-024-00291-4Volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping systemWeiping Deng0Fei Du1Rongliang Yang2Hanyang Yao3Min Yang4Xinyue Mei5Chen Ye6Su Li7Yixiang Liu8Huichuan Huang9Shusheng Zhu10College of Science, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityState Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural UniversityAbstract Grape downy mildew (Plasmopara viticola) is an air-borne disease and difficult to control. It has been observed that intercropping grapevines (Vitis vinifera) with aromatic plants can effectively suppress the airborne disease and volatile organic compounds (VOCs) from the aromatic plants are believed to have antimicrobial activities. In this study, a two-year field trial was established by intercropping grapevine and hoary stock (Matthiola incana) to evaluate the control of grape downy mildew. The field results showed that intercropping effectively suppressed grape downy mildew, particularly during the blooming stage of hoary stock. VOCs from hoary stock plants exhibited a dosage-dependent antimicrobial activity against grape downy mildew. To examine the role of VOCs, hoary stock plants were grown in an enclosed chamber, and VOCs were collected at the time points before and post blooming. The collected VOCs were subjected to gas chromatography-mass spectrometry (GC–MS) analysis and in vitro bioassays. Twenty-four VOCs found from pre-blooming and 36 VOCs from post-blooming hoary stock plants were identified. Seventeen VOCs demonstrated consistent inhibitory activities against P. viticola, including seven terpenoids, five benzenoids, and five aliphatics. Among the 17 VOCs, five were unique to post-blooming hoary stock, while 12 were common to both pre- and post-blooming hoary stock. The antimicrobial VOCs offers a potential eco-friendly alternative to managing downy mildew.https://doi.org/10.1186/s42483-024-00291-4Grapevine downy mildewHoary stockVolatile organic compoundsIntercroppingGC–MS analysisAntimicrobial activities |
| spellingShingle | Weiping Deng Fei Du Rongliang Yang Hanyang Yao Min Yang Xinyue Mei Chen Ye Su Li Yixiang Liu Huichuan Huang Shusheng Zhu Volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping system Phytopathology Research Grapevine downy mildew Hoary stock Volatile organic compounds Intercropping GC–MS analysis Antimicrobial activities |
| title | Volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping system |
| title_full | Volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping system |
| title_fullStr | Volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping system |
| title_full_unstemmed | Volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping system |
| title_short | Volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping system |
| title_sort | volatile organic compounds of hoary stock are responsible for suppressing downy mildew of grape in an intercropping system |
| topic | Grapevine downy mildew Hoary stock Volatile organic compounds Intercropping GC–MS analysis Antimicrobial activities |
| url | https://doi.org/10.1186/s42483-024-00291-4 |
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