Ronald P C
Department of Plant Pathology, University of California, Davis 95616, USA.
Plant Mol Biol. 1997 Sep;35(1-2):179-86.
The rice gene Xa21 conferring resistance to Xanthomonas oryzae pv. oryzae (Xoo), was isolated using a map-based cloning strategy. Compared with previously cloned genes, the structure of Xa21 represents a novel class of plant disease R genes encoding a putative receptor kinase (RK). This article proposes a model for the mode of action of Xa21 and summarizes our current knowledge of the modular basis of resistance in rice to bacterial leaf blight and blast.
利用图位克隆策略分离出了赋予水稻对水稻白叶枯病菌（Xanthomonas oryzae pv. oryzae，Xoo）抗性的水稻基因Xa21。与先前克隆的基因相比，Xa21的结构代表了一类新型的植物抗病R基因，其编码一种假定的受体激酶（RK）。本文提出了Xa21的作用模式模型，并总结了我们目前对水稻抗白叶枯病和稻瘟病抗性模块基础的认识。
