Over-expression of the citrus gene CtNH1 confers resistance to bacterial canker disease

被引:20
作者
Chen, Xiuhua [1 ]
Barnaby, Jinyoung Y. [2 ]
Sreedharan, Aswathy [3 ]
Huang, Xiaoen [1 ]
Orbovic, Vladimir [3 ]
Grosser, Jude W. [3 ]
Wang, Nian [3 ]
Dong, Xinnian [2 ]
Song, Wen-Yuan [1 ]
机构
[1] Univ Florida, Dept Plant Pathol, Plant Mol & Cellular Biol Program, Gainesville, FL 32611 USA
[2] Duke Univ, Dept Biol, Durham, NC 27708 USA
[3] Univ Florida, Citrus Res & Educ Ctr, Lake Alfred, FL 33850 USA
基金
美国国家科学基金会;
关键词
NPR1; Transgenic plants; Systemic acquired resistance; Canker disease; Citrus; CONSTITUTIVE ACTIVATION; ENHANCED RESISTANCE; NPR1-LIKE GENES; SALICYLIC-ACID; ARABIDOPSIS; NPR1; OVEREXPRESSION; PROTEIN; MUTANT; RESPONSES;
D O I
10.1016/j.pmpp.2013.07.002
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Citrus canker is a devastating disease, caused by Xanthomonas axonopodis pv. citri (Xac). It is well established that the NPR1 gene plays a pivotal role in systemic acquired resistance (SAR) in Arabidopsis. In this study, we report the isolation and characterization of an NPR1 homolog from citrus, namely Citrus NPR1 homolog 1 (CtNH1). Sequence alignment and phylogenetic analysis indicate that CtNH1 is closely-related to the Arabidopsis NPR1 gene and its orthologs from rice, grapevine, and cacao. When over-expressed in citrus, CtNH1 confers resistance to Xac and leads to constitutive expression of the pathogenesis-related (PR) gene chitinase 1 (Chi1), suggesting that CtNH1 is orthologous to NPR1. Published by Elsevier Ltd.
引用
收藏
页码:115 / 122
页数:8
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