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| 水稻Xa7基因抗白叶枯病应答中的活性氧代谢分析 | |
| 引用本文： | 马伯军,郑茜茜,张萍华,胡娜娜,陈析丰. 水稻Xa7基因抗白叶枯病应答中的活性氧代谢分析[J]. 浙江师范大学学报(自然科学版), 2013, 36(1): 1-5 |
| 作者姓名： | 马伯军 郑茜茜 张萍华 胡娜娜 陈析丰 |
| 作者单位： | 浙江师范大学化学与生命科学学院,浙江金华,321004 |
| 基金项目： | 国家重大科技专项，国家自然科学基金资助项目，浙江省自然科学基金资助项目，浙江省重点科技创新团队项目，浙江省公益性技术应用研究计划项目 |
| 摘 要： | 白叶枯病是由革兰氏阴性黄单孢菌水稻变种（Xanthomonas oryzae pv．Oryzae，Xoo）所引起的一种世界性水稻细菌病害．水稻Xa7基因是一个具有广谱抗性的显性抗白叶枯病基因．通过对水稻抗病品种IRBB7（含Xa7）和感病对照IR24接种白叶枯菌PX086，发现：在叶片的病原菌侵染部位，IRBB7比IR24的活性氧（H2O2和O2-）积累更快且含量更高；与活性氧代谢相关的酶，如超氧化物歧化酶、过氧化氢酶、抗坏血酸过氧化物酶和过氧化物酶的活性也更高．推测活性氧的代谢调节可能在Xa7基因介导的抗病反应中起作用． |
| 关 键 词： | 水稻 抗白叶枯病 Xa7基因 活性氧 |
Metabolism of reactive oxygen species in resistant response of rice Xa7 gene to bacterial blight |
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| MA Bojun , ZHENG Xixi , Zhang Pinghua , HU Na'na , CHEN Xifeng. Metabolism of reactive oxygen species in resistant response of rice Xa7 gene to bacterial blight[J]. Journal of Zhejiang Normal University Natural Sciences, 2013, 36(1): 1-5 | |
| Authors: | MA Bojun ZHENG Xixi Zhang Pinghua HU Na'na CHEN Xifeng |
| Affiliation: | ( College of Chemistry and Life Science, Zhejiang Normal University, Jinhua Zhejiang 321004, China) |
| Abstract: | Bacterial blight （ BB ） , caused by Xanthomonas oryzae pv. Oryzae, is one of the most serious worldwide disease of rice. Xa7 is a broadly dominant resistance gene directed against BB. The resistant rice cultivar IRBB7 （ with Xa7 ） and susceptible control IR24 were inoculated with strain PXO86 of BB. Comparison to the IR24, the leaves of IRBB7 accumulated reactive oxygen species （ROS; H2O2 and 02 - ） faster and higher, the activity of active oxygen metabolism-related enzymes （ SOD, CAT, APX and POD ） of IRBB7 was higher in the infect site. It was suggested that the regulation of ROS metabolism might be helpful for the Xa7- mediated disease resistance response. |
| Keywords: | rice resistance of bacterial blight Xa7 gene reactive oxygen species |
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