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Titolo:
Active oxygen species as mediators of plant immunity: Three case studies
Autore:
Sandermann, H;
Indirizzi:
GSF Forschungszentrum Umwelt & Gesundheit GMBH, Inst Biochem Pflanzenpathol, D-85764 Oberschleissheim, Germany GSF Forschungszentrum Umwelt & Gesundheit GMBH Oberschleissheim Germany D-85764
Titolo Testata:
BIOLOGICAL CHEMISTRY
fascicolo: 8, volume: 381, anno: 2000,
pagine: 649 - 653
SICI:
1431-6730(200008)381:8<649:AOSAMO>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
SYSTEMIC ACQUIRED-RESISTANCE; TRANSGENIC TOBACCO PLANTS; INDUCED OXIDATIVE STRESS; SALICYLIC-ACID; DISEASE RESISTANCE; DEFENSE RESPONSES; UROPORPHYRINOGEN DECARBOXYLASE; HYDROGEN-PEROXIDE; GENE-EXPRESSION; OZONE;
Keywords:
Arabidopsis thaliana; catalase; chlorophyll biosynthesis; ozone; plant defence; plant pathogens; tobacco;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Sandermann, H GSF Forschungszentrum Umwelt & Gesundheit GMBH, Inst BiochemPflanzenpathol, D-85764 Oberschleissheim, Germany GSF Forschungszentrum Umwelt & Gesundheit GMBH Oberschleissheim Germany D-85764
Citazione:
H. Sandermann, "Active oxygen species as mediators of plant immunity: Three case studies", BIOL CHEM, 381(8), 2000, pp. 649-653

Abstract

A burst of active oxygen species (AOS) is known to be involved in local cell death as part of plant defence against pathogens. It is, however, under dispute to what extent AOS can induce pathogen resistance and immunity throughout the plant. Three experimental strategies that reveal a primary role for AOS and a surprisingly low chemical and spatial specificity are now described for tobacco and Arabidopsis thaliana plants. Ozone is a gaseous AOS that was applied to non-transgenic plants. Hydrogen peroxide or singlet oxygen are AOS that were induced by high-light treatment of transgenic plants that contained antisense constructs inhibiting catalase activity or chlorophyll biosynthetic enzymes. In all cases, activated oxygen species, cellularlesions, ethylene and salicylic acid, and components of major plant defence systems (systemic acquired resistance, hypersensitive response) were induced, as was resistance towards pathogens (tobacco mosaic virus, Pseudomonassyringae or Peronospora parasitica). It is concluded that active oxygen species can act as mediators of plant immunity so that new non-pesticidal plant protection strategies could be developed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 11:26:02