Menadione sodium bisulphite:: a novel plant defence activator which enhances local and systemic resistance to infection by Leptosphaeria maculans in oilseed rape

被引：38

作者：

Borges, AA ^{[1
]}

Cools, HJ ^{[1
]}

Lucas, JA ^{[1
]}

机构：

[1] Rothamsted Res, Harpenden AL5 2JQ, Herts, England

来源：

PLANT PATHOLOGY | 2003年 / 52卷 / 04期

关键词：

ascorbate peroxidase; Brassica napus; induced resistance; menadione sodium bisulphite; pathogenesis-related protein 1; redox state;

D O I：

10.1046/j.1365-3059.2003.00877.x

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Pretreatment of the first true leaves of oilseed rape plants (Brassica napus cv. Bristol) with menadione sodium bisulphite (MSB) locally and systemically induced resistance, as shown by reduced lesion size and number, to infection by the fungal pathogen Leptosphaeria maculans, the causal agent of stem canker. Using a known systemic activator of salicylic acid-dependent PR-1 induction, acibenzolar-S-methyl (BTH; S-methylbenzo[1,2,3]thiadiazole-7-carbothiate) as a comparison, real-time PCR expression analysis of genes encoding a pathogenesis-related protein 1 (PR-1) and an ascorbate peroxidase (APX) demonstrated a systemic enhancement of APX expression in MSB-pretreated plants, with no effect on PR-1 expression, suggesting augmented reactive oxygen species production in MSB-pretreated plants. The results demonstrate MSB to be an effective resistance activator in oilseed rape, and potentially useful for the control of stem canker.

引用

页码：429 / 436

页数：8