ROS and salicylic acid (SA) play roles on the resistance establishment of the potato cultivar Zihuabai to Phytophthora infestans
ROS and salicylic acid (SA) play roles on the resistance establishment of the potato cultivar Zihuabai to Phytophthora infestans
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ROS和水杨酸（SA）在马铃薯品种紫花白对致病疫霉抗性建立中的作用
DOI：
10.1007/bf03356441
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发表时间：
2012-12-01
影响因子：
2
通讯作者：
Zhao, Jun
中科院分区：
文献类型：
--
作者：
Na, Ren;Zhang, Zhiwei;Zhao, Jun
紫花白因其对马铃薯晚疫病的高度抗性，已成为内蒙古中国地区最受欢迎的马铃薯品种。本研究对马铃薯品种紫花白的抗晚疫病机理进行了研究。研究了马铃薯晚疫病菌对马铃薯抗病和感病品种体内活性氧的积累、清除氧酶活性和部分抗性基因转录水平的影响。结果表明，抗病品种紫花白的ROS积累速度和氧清除酶活性均高于感病品种Shepody。此外，通过RT-PCR检测了参与抗性信号转导途径(水杨酸和茉莉酸途径)的基因的转录水平。结果表明，ROS和SA共同是调控马铃薯品种紫花白对致病疫霉抗性的主要信号分子。
Due to its high resistant to potato late blight, Zihuabai has become the most popular potato variety in the Inner Mongolia region of China. In this study, experiments were carried out to investigate the resistance mechanism of potato cultivar Zihuabai to late blight. Accumulation of reactive oxygen species (ROS), activities of oxygen scavenging enzymes, and transcription level of some resistance genes were determined in both resistant and susceptible potato cultivars inoculated with Phytophthora infestans, which causes potato late blight. Our results show that both ROS accumulation and oxygen scavenging enzymes activities were quicker and higher in the resistant cultivar Zihuabai compared to those of the susceptible cultivar Shepody. In addition, transcript levels of genes which are involved in resistant signaling pathways (salicylic acid and jasmonic acid pathways) were detected through RT-PCR. Our data indicated that together ROS and SA are the main signaling molecules regulating the resistance of potato cultivar Zihuabai to P. infestans.