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Titolo:
Activation of systemic disease resistance in pea by an avirulent bacteriumor a benzothiadiazole, but not by a fungal leaf spot pathogen
Autore:
Dann, EK; Deverall, BJ;
Indirizzi:
Univ Sydney, Dept Crop Sci, Sydney, NSW 2006, Australia Univ Sydney Sydney NSW Australia 2006 op Sci, Sydney, NSW 2006, Australia
Titolo Testata:
PLANT PATHOLOGY
fascicolo: 3, volume: 49, anno: 2000,
pagine: 324 - 332
SICI:
0032-0862(200006)49:3<324:AOSDRI>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACQUIRED-RESISTANCE; ANTIFUNGAL HYDROLASES; SALICYLIC-ACID; PISUM-SATIVUM; CELL-DEATH; CHITINASE; INDUCTION; LEAVES; PLANTS; BETA-1,3-GLUCANASE;
Keywords:
systemic resistance; PR proteins; Mycosphaerella pinodes; Pseudomonas syringae; benzothiadiazole; pea;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Dann, EK Univ Sydney, Dept Crop Sci, Sydney, NSW 2006, Australia Univ Sydney Sydney NSW Australia 2006 ydney, NSW 2006, Australia
Citazione:
E.K. Dann e B.J. Deverall, "Activation of systemic disease resistance in pea by an avirulent bacteriumor a benzothiadiazole, but not by a fungal leaf spot pathogen", PLANT PATH, 49(3), 2000, pp. 324-332

Abstract

Inoculation of first expanded leaves of pea seedlings with an avirulent strain of Pseudomonas syringae pv. pisi, or treatment with sprays of a benzothiadiazole (20 or 100 mu g a.i. mL(-1)), decreased the susceptibility of subsequent leaves 7 or 14 days later to challenge inoculation with Mycosphaerella pinodes. Inoculation of first leaves with a virulent strain of P. syringae pv. pisi or with M. pinodes did not decrease the susceptibility of plants to M. pinodes. Treatments effective in decreasing susceptibility to M. pinodes were similarly active against Uromyces viciae-fabae and virulent P.syringae pv. pisi. Effective treatments also enhanced the activities of the enzymes beta-1,3-glucanase and chitinase in untreated upper leaves 6 dayslater. Ineffective treatments for decreased susceptibility had no effect on the activity of the enzymes. None of the treatments enhanced peroxidase activities. The results are discussed in relation to the reported signallingeffects of the benzothiadiazole and in relation to a suggested high activity of the avirulent P. syringae pv. pisi strain and inactivity of M. pinodes in enhancing natural signalling.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 15:30:17