Rutin-Mediated Priming of Plant Resistance to Three Bacterial Pathogens Initiating the Early SA Signal Pathway.
Rutin-Mediated Priming of Plant Resistance to Three Bacterial Pathogens Initiating the Early SA Signal Pathway.
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DOI：
10.1371/journal.pone.0146910
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发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Chu Z
中科院分区：
文献类型：
--
作者：
Yang W;Xu X;Li Y;Wang Y;Li M;Wang Y;Ding X;Chu Z
黄酮类化合物广泛存在于植物界，具有多种功能，包括紫外线防护、生长素运输抑制、化感作用、花色和抗虫性。在这里，我们表明，芦丁，黄酮家族的骄傲成员，可以作为一种激活剂，以提高植物抗病性的功能。用2 mM芦丁预处理的三种植物物种被发现增强对黄单胞菌黄单胞菌的抗性。、青枯雷尔氏菌（Ralstonia solanacearum）和假单胞菌（Pseudomonasolingae pv.）番茄DC 3000菌株分别在水稻、烟草和拟南芥中的生长情况。而对于那些致病菌，它们通常在补充有2 mM芦丁的培养基上繁殖。抗性的增强与几种发病相关基因的启动表达有关。我们还证明了芦丁介导的引发抗性在npr 1、eds 1、eds 5、pad 4 -1、ndr 1突变体和NahG转基因拟南芥中减弱，而在snc 1 -11、ein 2 -5和jar 1突变体中不减弱。我们的结论是，芦丁引发防御信号调制水杨酸（SA）依赖的途径从早期阶段上游的NDR 1和EDS 1。
Flavonoids are ubiquitous in the plant kingdom and have many diverse functions, including UV protection, auxin transport inhibition, allelopathy, flower coloring and insect resistance. Here we show that rutin, a proud member of the flavonoid family, could be functional as an activator to improve plant disease resistances. Three plant species pretreated with 2 mM rutin were found to enhance resistance to Xanthomonas oryzae pv. oryzae, Ralstonia solanacearum, and Pseudomonas syringae pv. tomato strain DC3000 in rice, tobacco and Arabidopsis thaliana respectively. While they were normally propagated on the cultural medium supplemented with 2 mM rutin for those pathogenic bacteria. The enhanced resistance was associated with primed expression of several pathogenesis-related genes. We also demonstrated that the rutin-mediated priming resistance was attenuated in npr1, eds1, eds5, pad4-1, ndr1 mutants, and NahG transgenic Arabidopsis plant, while not in either snc1-11, ein2-5 or jar1 mutants. We concluded that the rutin-priming defense signal was modulated by the salicylic acid (SA)-dependent pathway from an early stage upstream of NDR1 and EDS1.