Searching for plant NLR immune receptors conferring resistance to potyviruses
Xin Hong,
Shufen Li,
Xiaofei Cheng,
Haijian Zhi,
Jinlong Yin,
Kai Xu
Affiliations
Xin Hong
Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Microbiology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China
Shufen Li
Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Microbiology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China
Xiaofei Cheng
College of Plant Protection, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
Haijian Zhi
National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
Jinlong Yin
Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Microbiology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China; Corresponding authors.
Kai Xu
Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Microbiology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, Jiangsu, China; Corresponding authors.
To fight against invasion by pathogens, plants have evolved an elaborate innate immune system, of which the nucleotide-binding domain leucine-rich repeat-containing receptor (NLR) acts as the sensor and immune executor. Potyviruses, comprising one of the largest genera of plant viruses, cause severe crop yield losses worldwide. Inherited crop resistance to potyviruses can be used in breeding and plant transgenesis to control disease development. This review summarizes achievements in mapping and cloning NLR genes conferring dominant resistance against potyvirus in the families Fabaceae, Solanaceae, Brassicaceae, and Cucurbitaceae. It compares mechanisms of potyviral protein recognition and downstream signaling employed by NLRs and discusses strategies for exploiting NLRs to better control diseases caused by potyviruses.
