期刊
MOLECULAR PLANT-MICROBE INTERACTIONS
卷 23, 期 8, 页码 1012-1021出版社
AMER PHYTOPATHOLOGICAL SOC
DOI: 10.1094/MPMI-23-8-1012
关键词
-
资金
- Conseil Regional de Bourgogne
- Bureau Interprofessionnel des Vins de Bourgogne [07 9201 AA 040 S 3627]
- Comite National des Interprofessions des Vins d'appelation d'origine
- ANR [08-GENO-148G]
- ERA
- French Ministere de l'Enseignement Superieur et de la Recherche
The molecular mechanisms underlying the process of priming are poorly understood. In the present study, we investigated the early signaling events triggered by beta-aminobutyric acid (BABA), a well-known priming-mediated plant resistance inducer. Our results indicate that, in contrast to oligogalacturonides (OG), BABA does not elicit typical defense-related early signaling events nor defense-gene expression in grapevine. However, in OG-elicited cells pretreated with BABA, production of reactive oxygen species (ROS) and expression of the respiratory-burst oxidase homolog RbohD gene were primed. In response to the causal agent of downy mildew Plasmopara viticola, a stronger ROS production was specifically observed in BABA-treated leaves. This process was correlated with an increased resistance. The NADPH oxidase inhibitor diphenylene iodonium (DPI) abolished this primed ROS production and reduced the BABA-induced resistance (BABA-IR). These results suggest that priming of an NADPH oxidase dependent ROS production contributes to BABA-IR in the Vitis-Plasmopara pathosystem.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据