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A new NLR disease resistance gene Xa47 confers durable and broad-spectrum resistance to bacterial blight in rice

文献类型： 外文期刊

作者： Lu, Yuanda 1 ; Zhong, Qiaofang 1 ; Xiao, Suqin 1 ; Wang, Bo 1 ; Ke, Xue 1 ; Zhang, Yun 1 ; Yin, Fuyou 1 ; Zhang, Dunyu 1 ; Jiang, Cong 1 ; Liu, Li 1 ; Li, Jinlu 1 ; Yu, Tengqiong 1 ; Wang, Lingxian 1 ; Cheng, Zaiquan 1 ; Chen, Ling 1 ;

作者机构： 1.Yunnan Acad Agr Sci, Biotechnol & Germplasm Resources Inst, Yunnan Prov Key Lab Agr Biotechnol, Kunming, Peoples R China

2.Yunnan Agr Univ, Coll Plant Protect, Kunming, Peoples R China

关键词： Xa47; NLR; Xanthomonas oryzae pv; oryzae; broad-spectrum resistance; bacterial blight

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）

ISSN： 1664-462X

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Bacterial blight (BB) induced by Xanthomonas oryzae pv. oryzae (Xoo) is a devastating bacterial disease in rice. The use of disease resistance (R) genes is the most efficient method to control BB. Members of the nucleotide-binding domain and leucine-rich repeat containing protein (NLR) family have significant roles in plant defense. In this study, Xa47, a new bacterial blight R gene encoding a typical NLR, was isolated from G252 rice material, and XA47 was localized in the nucleus and cytoplasm. Among 180 rice materials tested, Xa47 was discovered in certain BB-resistant materials. Compared with the wild-type G252, the knockout mutants of Xa47 was more susceptible to Xoo. By contrast, overexpression of Xa47 in the susceptible rice material JG30 increased BB resistance. The findings indicate that Xa47 positively regulates the Xoo stress response. Consequently, Xa47 may have application potential in the genetic improvement of plant disease resistance. The molecular mechanism of Xa47 regulation merits additional examination.

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