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Titolo:
Ethylene-dependent salicylic acid regulates an expanded cell death response to a plant pathogen
Autore:
ODonnell, PJ; Jones, JB; Antoine, FR; Ciardi, J; Klee, HJ;
Indirizzi:
Univ Florida, Dept Hort Sci, Gainesville, FL 32611 USA Univ Florida Gainesville FL USA 32611 Hort Sci, Gainesville, FL 32611 USA Univ Florida, Dept Plant Pathol, Gainesville, FL 32611 USA Univ Florida Gainesville FL USA 32611 t Pathol, Gainesville, FL 32611 USA Univ Florida, Food & Environm Toxicol Lab, Gainesville, FL 32611 USA Univ Florida Gainesville FL USA 32611 icol Lab, Gainesville, FL 32611 USA
Titolo Testata:
PLANT JOURNAL
fascicolo: 3, volume: 25, anno: 2001,
pagine: 315 - 323
SICI:
0960-7412(200102)25:3<315:ESARAE>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
SYSTEMIC ACQUIRED-RESISTANCE; DISEASE RESISTANCE; DEFENSE RESPONSES; GENE-EXPRESSION; ARABIDOPSIS; TOMATO; INFECTION; MUTANTS; SUSCEPTIBILITY; REQUIREMENT;
Keywords:
Xanthomonas campestris pv. vesicatoria; compatible pathogen; hormone signal transduction; tomato; disease;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Klee, HJ Univ Florida, Dept Hort Sci, Gainesville, FL 32611 USA Univ Florida Gainesville FL USA 32611 Gainesville, FL 32611 USA
Citazione:
P.J. O'Donnell et al., "Ethylene-dependent salicylic acid regulates an expanded cell death response to a plant pathogen", PLANT J, 25(3), 2001, pp. 315-323

Abstract

The molecular events associated with susceptible plant responses to disease-causing organisms are not well understood. We have previously shown that ethylene-insensitive tomato plants infected with Xanthomonas campestris pv.vesicatoria have greatly reduced disease symptoms relative to wild-type cultivars. Here we show that salicylic acid (SA) is also an important component of the susceptible disease response. SA accumulates in infected wild-type tissues and is correlated with necrosis but does not accumulate in ethylene-insensitive plants. Exogenous feeding of SA to ethylene-deficient plantsrestores necrosis, indicating that reduced disease symptoms are associatedwith failure to accumulate SA. These results indicate a mechanism for co-ordination of phytohormone signals that together constitute a susceptible response to pathogens.

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Documento generato il 28/03/20 alle ore 13:50:08