کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2836678 | 1570868 | 2008 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Role of stilbenes in the resistance of grapevine to powdery mildew Role of stilbenes in the resistance of grapevine to powdery mildew](/preview/png/2836678.png)
Stilbene phytoalexins are identified as defence response in pathogen–grapevine interactions, but little information is available on the role of stilbenes on Erysiphe necator, causal agent of grapevine powdery mildew. Analysis of stilbenes in artificially infected leaf discs from susceptible to highly resistant cultivars was performed and compared to the development of the pathogen. Results indicate that stilbene synthesis is confined in infected cells, penetrated by an appressorium–peg. Stilbene amounts expressed by infection site allow discriminating susceptible and resistant cultivars. Highest viniferins concentrations on resistant cultivars are in correspondence with the observed inhibition of the pathogen growth. The analysis of stilbenes at the infection site and viniferins accumulation in grapevine defence reaction is discussed.
Journal: Physiological and Molecular Plant Pathology - Volume 72, Issues 4–6, July–September 2008, Pages 128–133