BIOLOGICAL INDUCTION OF SYSTEMIC ACQUIRED-RESISTANCE IN ARABIDOPSIS

被引：208

作者：

UKNES, S ^{[1
]}

WINTER, AM ^{[1
]}

DELANEY, T ^{[1
]}

VERNOOIJ, B ^{[1
]}

MORSE, A ^{[1
]}

FRIEDRICH, L ^{[1
]}

NYE, G ^{[1
]}

POTTER, S ^{[1
]}

WARD, E ^{[1
]}

RYALS, J ^{[1
]}

机构：

[1] CIBA GEIGY CORP,AGR BIOTECHNOL RES UNIT,RES TRIANGLE PK,NC 27709

来源：

MOLECULAR PLANT-MICROBE INTERACTIONS | 1993年 / 6卷 / 06期

关键词：

D O I：

10.1094/MPMI-6-692

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Previously, Arabidopsis was shown to develop acquired resistance to a bacterial and a fungal pathogen following treatment with the activator compound 2,6-dichloroiso-nicotinic acid (INA). In this study, we show that a necrotizing pathogen, turnip crinkle virus (TCV), can induce systemic acquired resistance (SAR) in Arabidopsis against bacterial (Pseudomonas syringae) and viral (TCV) pathogens. The TCV-induced resistance results in both a decrease in visible disease symptoms and a reduction in the growth of the challenge pathogen. Levels of salicylic acid (SA), a likely endogenous signal for SAR, increased more than fivefold in response to TCV infection. In addition, exogenously applied SA induced resistance to the fungal pathogen Peronospora parasitica. Three genes induced to high levels by SA (PR-l, PR-2, and PR-5) were also induced by TCV inoculation. In addition, we show that INA treatment induces resistance to TCV, extending the previous observation of chemically induced resistance against bacterial and fungal pathogens to include protection against viral pathogens.

引用

页码：692 / 698

页数：7

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