http://www.cnr.it/ontology/cnr/individuo/prodotto/ID130855
Inducible defences elicited by a new chitosan formulation prevent powdery mildew infection in grapevine and melon (Abstract in rivista)
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- Label
- Inducible defences elicited by a new chitosan formulation prevent powdery mildew infection in grapevine and melon (Abstract in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Alternative label
Iriti M., Di Tommaso G., DAmico S., Picchi V., Faoro F. (2008)
Inducible defences elicited by a new chitosan formulation prevent powdery mildew infection in grapevine and melon
in 9th International Congress of Plant Pathology, Torino, 2008
(literal)
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- Iriti M., Di Tommaso G., DAmico S., Picchi V., Faoro F. (literal)
- Convegno
- 9th International Congress of Plant Pathology (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#citta
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- Abstract pubblicato in Journal of Plant Pathology, 90( 2, Suppl.)332, 2008. (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
- Elicitors, such as microbe-associated molecular patterns (MAMP) or products of avirulence (avr) genes, can trigger plant defence mechanisms when recognized by host receptors (Iriti and Faoro, 2007, Mycopathologia, 164:57-64). It has been shown that chitosan, a deacetylated chitin derivative, acts as a MAMP, by binding to a specific receptor (Cheng and Xu, 2005, J. Integrat. Plant Biol. 47: 452456), thus eliciting systemic immunity in some pathosystems. In this study, a new chitosan formulation (Valagro, 5-1570) has been tested as an inducer of resistance against powdery mildew in grapevine and melon. Two grapevine cultivars (Trebbiano and Montepulciano) were sprayed weekly with solutions of 5-1570 at different concentrations, or with commercial formulations of Penconazole and Methildinocarp as negative controls, from 21 May to13 August. All the 5-1570 concentrations tested were effective in controlling powdery mildew, though the best concentration was 0.05%. In this case, disease severity was 2.39% in the treated grapes, compared with 87.5% in the untreated ones and 0.92% in fungicide-treated plants. Similar results were obtained in melon, confirming the efficacy of the formulation. The polyphenol profiles of treated grape berries at veraison and at harvest were investigated, showing that with Trebbiano no significant differences from the controls were found in most of the examined compounds. Instead, in Montepulciano berries some polyphenol classes, particulary flavonols and stilbenes (including trans-resveratrol), were significantly higher in 5-1570 treated plants. (literal)
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- Inducible defences elicited by a new chitosan formulation prevent powdery mildew infection in grapevine and melon (literal)
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