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Titolo:
Benzothiadiazole-induced gene expression in wheat spikes does not provide resistance to Fusarium head blight
Autore:
Yu, GY; Muehlbauer, GJ;
Indirizzi:
Univ Minnesota, Dept Agron & Plant Genet, St Paul, MN 55108 USA Univ Minnesota St Paul MN USA 55108 & Plant Genet, St Paul, MN 55108 USA
Titolo Testata:
PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY
fascicolo: 3, volume: 59, anno: 2001,
pagine: 129 - 136
SICI:
0885-5765(200109)59:3<129:BGEIWS>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
SYSTEMIC ACQUIRED-RESISTANCE; DISEASE RESISTANCE; SCAB; BARLEY; RESPONSES; INDUCTION; CEREALS; PLANTS;
Keywords:
Triticum aestivum; Fusarium graminearum; benzo(1,2,3)thiodiazole-7-carbothioic acid S-methyl; ester (BTH); Fusarium head blight;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Muehlbauer, GJ Univ Minnesota, Dept Agron & Plant Genet, St Paul, MN 55108USA Univ Minnesota St Paul MN USA 55108 St Paul, MN 55108 USA
Citazione:
G.Y. Yu e G.J. Muehlbauer, "Benzothiadiazole-induced gene expression in wheat spikes does not provide resistance to Fusarium head blight", PHYSL MOL P, 59(3), 2001, pp. 129-136

Abstract

Fusarium head blight (FHB) is a devastating disease of wheat throughout the world. FHB is primarily caused by the fungal pathogen Fusarium graminearum. In wheat, benzo(1,2,3)thiadiazole-7-carbothioic acid S-methyl ester (BTH) induces the wheat chemically-induced (WCI) genes and provides resistance to several pathogens. The objectives of this study were two-fold: (1) to investigate the effects of BTH application and F. graminearum infection on selected defense response genes in wheat spikes; and (2) to study the potential of BTH for inducing FHB resistance in wheat. Wheat spikes were treated with BTH prior to anthesis and transcript accumulation and resistance to FHBwere measured. BTH-treated wheat spikes were examined for expression of six defense response genes (PR-1, PR-2, PR-3, PR-4, PR-5 and peroxidase) and the five WCI genes that are induced by BTH in wheat leaves. All five WCI genes were induced by BTH in spikes; however none of the six defense responsegenes were induced. Conversely, the defense response genes were induced byF graminearum infection, whereas the WCI genes were not. These data indicate that the pathway for induction of the defense response genes by F. graminearum infection is distinct from the BTH-induced pathway. In the disease evaluations of BTH-treated plants, we found that BTH did not provide significant Type I or Type II resistance to wheat spikes spray- or point-inoculated with F. graminearum, respectively. These data indicate that BTH application and the induction of WCI gene expression does not provide resistance to FHB. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 08:06:11