Publication details
Polyketide Derivatives in the Resistance of Gerbera hybrida to Powdery Mildew
| Authors | |
|---|---|
| Year of publication | 2022 |
| Type | Article in Periodical |
| Magazine / Source | Frontiers in Plant Science |
| MU Faculty or unit | |
| Citation | |
| Web | https://www.frontiersin.org/articles/10.3389/fpls.2021.790907/full |
| Doi | http://dx.doi.org/10.3389/fpls.2021.790907 |
| Keywords | Gerbera hybrida; powdery mildew resistance; H-1 NMR; decision tree; polyketides |
| Description | Powdery mildew is a common disease affecting the commercial production of gerbera flowers (Gerbera hybrida, Asteraceae). Some varieties show a certain degree of resistance to it. Our objective was to identify biomarkers of resistance to powdery mildew using an H-1 nuclear magnetic resonance spectroscopy and chemometrics approach in a complex, fully factorial experiment to suggest a target for selection and breeding. Resistant varieties were found to differ from those that were susceptible in the metabolites of the polyketide pathway, such as gerberin, parasorboside, and gerberinside. A new compound probably involved in resistance, 5-hydroxyhexanoic acid 3-O-beta-D-glucoside, was described for the first time. A decision tree model was built to distinguish resistant varieties, with an accuracy of 57.7%, sensitivity of 72%, and specificity of 44.44% in an independent test. Our results suggest the mechanism of resistance to powdery mildew in gerbera and provide a potential tool for resistance screening in breeding programs. |