http://www.cnr.it/ontology/cnr/individuo/prodotto/ID130827

The activity of elicitors of plant resistance on phytoplasma infection (Comunicazione a convegno)

Type

Prodotto della ricerca (Classe)
Comunicazione a convegno (Classe)

Label

The activity of elicitors of plant resistance on phytoplasma infection (Comunicazione a convegno) (literal)

Anno

2008-01-01T00:00:00+01:00 (literal)

Alternative label

C. Marzachì,, R. D'Amelio, G. Berta, G. D'Agostino, F. Faoro, E. Gamalero, M. Iriti, N. Massa, S. Sampo and D. Bosco (2008)
The activity of elicitors of plant resistance on phytoplasma infection
in 2nd International Phytoplasma Workshop, La Habana, Cuba
(literal)

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C. Marzachì,, R. D'Amelio, G. Berta, G. D'Agostino, F. Faoro, E. Gamalero, M. Iriti, N. Massa, S. Sampo and D. Bosco (literal)

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Vescicular-arbuscular mycorrhizal fungi are naturally present in the roots of most fruit trees, and establish symbiosis with the plant, giving improved resistance to abiotic and biotic stresses. The presence of non-pathogenic rhizosphere bacteria may induce systemic resistance in plants. Several natural or synthetic compounds, among them chitosan, are widely present in nature and not very toxic to the plant, and benzo (1,2,3) thiadiazole-7-carbothioic acid S-methyl ester (BTH), may also activate the plant defence machinery against several pathogens. Delay of symptom development and of plant death has been used to evaluate the activity of 1) the vescicular-arbuscular fungi Glomus mosseae and G. intraradices; 2) the rhizobacteria Pseudomonas putida S1PF1, and 3084 and Streptomyces sp. Sb20; 3) chitosan; and 4) BTH as inducers of resistance against chrysanthemum yellows (CY) phytoplasma infection of daisy. While G. mosseae and P. putida S1PF1 slightly reduced the number of CY-infected plants and extended the life span of the affected plants, only 2.4 mM BTH provided some protection from the disease and a delay of symptoms. Two concentrations of chitosan dissolved in acetic or hydrochloric acids were not effective, although some protection was present in plants sprayed only with acetic acid. Both acids were phytotoxic. The most promising biotic and abiotic treatments identified in this screening will be further studied following their application under controlled conditions. The possible interactions between elicitors and insect vectors will also be investigated. (literal)

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Universita degli Studi di Torino, Di.Va.P.R.A. Torino, Italia Università del Piemonte orientale, Dipartimento di Scienze dell'Ambiente e della Vita, Alessandria, Italia Università degli Studi di Milano, Dipartimento di Protezione delle Piante (literal)

Titolo