Salicylic acid accumulation in barley is pathogen specific but not required for defense-gene activation

Barley (Hordeum vulgare) seedlings were inoculated with the biotrophic pathogen Erysiphe graminis f. sp. hordei, the biotrophic nonhost pathogen E. graminis f. sp. tritici, and the necrotrophic nonhost pathogen Pseudomonas syringae pv. syringae. The levels of free salicylic acid and of salicylic-aci...

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Veröffentlicht in:	Molecular plant-microbe interactions 1998-07, Vol.11 (7), p.702-705
Hauptverfasser:	Vallelian-Bindschedler, V, Metraux, J.P, Schweizer, P
Format:	Artikel
Sprache:	eng
Schlagworte:	ACIDE SALICYLIQUE ACIDO SALICILICO Agronomy. Soil science and plant productions Biological and medical sciences CHITINASE COMPATIBILITY ENFERMEDADES DE LAS PLANTAS ERYSIPHE GRAMINIS ERYSIPHE GRAMINIS F.SP. HORDEI ERYSIPHE GRAMINIS F.SP. TRITICI EXPERIMENTACION IN VIVO EXPERIMENTAL INFECTION EXPERIMENTATION IN VIVO Fundamental and applied biological sciences. Psychology Genetics and breeding of economic plants HORDEUM VULGARE HOSTS HOTE HUESPEDES IN VIVO EXPERIMENTATION INFECCION EXPERIMENTAL INFECTION EXPERIMENTALE MALADIE DES PLANTES PATHOGENESE PATHOGENESIS PATOGENESIS PEROXIDASAS PEROXIDASES PEROXYDASE Pest resistance PLANT DISEASES Plant pathogens powdery mildew PR proteins PROTEIN SYNTHESIS PROTEINAS PROTEINE PROTEINS PSEUDOMONAS SYRINGAE PSEUDOMONAS SYRINGAE PV. SYRINGAE QUITINASA SALICYLIC ACIDS SINTESIS DE PROTEINAS SYNTHESE PROTEIQUE Varietal selection. Specialized plant breeding, plant breeding aims
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Zusammenfassung:	Barley (Hordeum vulgare) seedlings were inoculated with the biotrophic pathogen Erysiphe graminis f. sp. hordei, the biotrophic nonhost pathogen E. graminis f. sp. tritici, and the necrotrophic nonhost pathogen Pseudomonas syringae pv. syringae. The levels of free salicylic acid and of salicylic-acid conjugates remained low after infection with E. graminis f. sp. hordei or E. graminis f. sp. tritici while they increased after inoculation with P. syringae pv. syringae. Pathogenesis-related proteins PR1, PR3 (chitinase), PR5 (thaumatin-like), and PR9 (peroxidase) accumulated after inoculation with all three pathogens
ISSN:	0894-0282 1943-7706
DOI:	10.1094/MPMI.1998.11.7.702