期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 -, 期 -, 页码 -出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.2c02575
关键词
Phytophthora infestans; potato; Solanum tuberosum L; steroidal glycoalkaloid; metabolomics; hemolytic activity; antifungal activity; biotic stress; phytometabolomics
资金
- BMBF enable [01EA1409A]
- Fonds der Chemischen Industrie
- Leonhard-Lorenz foundation [912/15]
Plant pathogens pose a threat to food security and new plant protection strategies are needed. A study found that Phytophthora infestans induced metabolic changes in potato foliage and tubers, and identified compounds with antioomycete activity.
Plant pathogens such as Phytophthora infestans that caused the Irish Potato Famine continue to threaten local and global food security. Genetic and chemical plant protection measures are often overcome by adaptation of pathogen population structures. Therefore, there is a constant demand for new, consumer- and environment-friendly plant protection strategies. Metabolic alterations induced by P. infestans in the foliage and tubers of six different potato cultivars were investigated. Using a combination of untargeted metabolomics, isolation techniques, and structure elucidation by MS and 1D/2D-NMR experiments, five steroidal glycoalkaloids, five oxylipins, and four steroidal saponins were identified. As the steroidal saponins showed antioomycete but no hemolytic activity, they may thus be considered as probably safe target substances for enrichment in breeding programs for disease resistance and as chemical lead structures for the production of nature-derived synthetic antioomycetes.
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