水稻抗白叶枯病基因Xa21的研究进展

白辉, 李莉云, 刘国振
遗传, 2006, 28(6): 745-753  DOI: 10.3321/j.issn:0253-9772.2006.06.020     追溯原文......本站官方QQ群:62473826
水稻; Xa21; 白叶枯病; 抗病基因

Xa21是最早克隆的水稻抗病基因,作为类受体激酶类广谱抗病基因它受到广泛的关注。转基因Xa21材料,很可能成为世界上第一个被批准进行大田释放的水稻转基因材料。文章在简要回顾Xa21的发现、定位和克隆过程之后,总结了目前Xa21基因的抗病作用机理和育种应用研究现状,包括XA21蛋白质激酶的生化特性、AvrXa21的鉴别、Xa21介导的抗病途径、抗病机理等,并对今后的研究进行了展望。

Advances of Rice Bacterial Blight Disease Resistance Gene Xa21

BAI Hui, LI Li-Yun, LIU Guo-Zhen
HEREDITAS(Beijing), 2006, 28(6): 745-753
rice; Xa21; bacterial blight; disease resistance gene

Gene Xa21 is the first disease resistance gene cloned from rice (Oryza sativa L.), which encodes a receptor-like kinase and confers broad spectrum resistance against Xanthomonas oryzae pv. oryzae (Xoo). In this paper, the discovery, mapping and cloning of Xa21 were reviewed briefly. The molecular mechanism of resistance and its breeding application, including biochemical properties of the kinase domain of XA21, AvrXa21 identification, the disease resistance pathway mediated by Xa21, and the mechanism of disease resistance were summarized. Future perspective on Xa21-related research is also discussed.


基因列表
  白叶枯病抗性基因 Xa21; Xa-21