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科学家“弄清”水稻常“生病”原因
发表日期: 2014-10-08 作者: 王国梁 文章来源:《植物病理学年评》
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记者胡其峰日前从中国农科院植保研究所获悉,围绕水稻先天免疫机制的研究,该所王国梁教授及其科研团队近日揭示了水稻抗稻瘟病及白叶枯病的分子机理,勾勒出稻瘟病菌、白叶枯病菌与水稻互相作用的分子调控机理,相关论文发表在近期的世界植物病理学领域顶尖期刊《植物病理学年评》上。

水稻生产过程中遭受各种真菌(如稻瘟菌、纹枯菌、稻曲病菌)、细菌(如白叶枯、细条病菌)、病毒(如条纹叶枯、黑条矮缩)的危害,是造成产量损失的最直接因素。近期研究表明,植物存在着与动物相似的先天免疫系统,该系统由两个层次的免疫反应组成。王国梁及其科研团队围绕水稻受病原相关分子模式诱导的免疫(PTI)信号途径、病原菌效应蛋白抑制水稻PTI、水稻受病原菌效应蛋白诱导的免疫(ETI)信号途径等方面开展研究,弄清了水稻与稻瘟病菌、白叶枯病菌互相作用的分子调控网络机理。(来源:光明日报 胡其峰)

 

Novel Insights into Rice Innate Immunity Against Bacterial

and Fungal Pathogens

 

Abstract  Rice feeds more than half of the world's population. Rice blast, caused by the fungal pathogen Magnaporthe oryzae, and bacterial blight, caused by the bacterial pathogen Xanthomonas oryzae pv. oryzae, are major constraints to rice production worldwide. Genome sequencing and extensive molecular analysis has led to the identification of many new pathogen-associated molecular patterns (PAMPs) and avirulence and virulence effectors in both pathogens, as well as effector targets and receptors in the rice host. Characterization of these effectors, host targets, and resistance genes has provided new insight into innate immunity in plants. Some of the new findings, such as the binding activity of X. oryzae transcriptional activator–like (TAL) effectors to specific rice genomic sequences, are being used for the development of effective disease control methods and genome modification tools. This review summarizes the recent progress toward understanding the recognition and signaling events that govern rice innate immunity.

 

原文链接:http://www.annualreviews.org/doi/abs/10.1146/annurev-phyto-102313-045926


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