A CENTRAL ROLE OF SALICYLIC-ACID IN PLANT-DISEASE RESISTANCE
A CENTRAL ROLE OF SALICYLIC-ACID IN PLANT-DISEASE RESISTANCE
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DOI：
10.1126/science.266.5188.1247
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发表时间：
1994-11-18
期刊：
影响因子：
56.9
通讯作者：
RYALS, J
中科院分区：
文献类型：
--
作者：
DELANEY, TP;UKNES, S;RYALS, J
转基因烟草和表达细菌酶水杨酸羟化酶的拟南芥不能积累水杨酸（SA）。这种缺陷不仅使植物不能诱导系统获得抗性，而且还导致对病毒、真菌和细菌病原体的易感性增加。增强的易感性甚至延伸到通常会导致遗传抗性的宿主-病原体组合。因此，SA积累对于植物抗病性的多种模式的表达是必需的。
Transgenic tobacco and Arabidopsis thaliana expressing the bacterial enzyme salicylate hydroxylase cannot accumulate salicylic acid (SA). This defect not only makes the plants unable to induce systemic acquired resistance, but also leads to increased susceptibility to viral, fungal, and bacterial pathogens. The enhanced susceptibility extends even to host-pathogen combinations that would normally result in genetic resistance. Therefore, SA accumulation is essential for expression of multiple modes of plant disease resistance.