Systemic Acquired Resistance and Signal Transduction in Plant  

作　　者：ZHAO Shu-qing and GUO Jian-boLaboratory of Biotechnology , Shanxi University , Taiyuan 030006 ,P. R. China 

出　　处：《Agricultural Sciences in China》2003年第5期539-548,共10页中国农业科学（英文版）

基　　金：supported by National Natural Science Foundation of China(30000112);Shanxi Province Natural Science Foundation(20001037).

摘　　要：Systemic acquired resistance (SAR), known as the broad-spectrum, inducible plant immunity, is a defense response triggered by pathogen infection. The response starts from the recognition of plant resistance (R) with the corresponding avirulence (avr) gene from the pathogen. There are some genes for convergence of signals downstream of different R/avr interacting partners into a single signaling pathway. Salicylic acid (SA) is required for the induction of SAR and involved in transducing the signal in target tissues. The SA signal is transduced through NPR1, a nuclear-localized protein that interacts with transcription factors that are involved in regulating SA-mediated gene expression. Some chemicals that mimic natural signaling compounds can also activate SAR. The application of biochemical activators to agriculture for plant protection is a novel idea for developing green chemical pesticide.Systemic acquired resistance (SAR), known as the broad-spectrum, inducible plant immunity, is a defense response triggered by pathogen infection. The response starts from the recognition of plant resistance (R) with the corresponding avirulence (avr) gene from the pathogen. There are some genes for convergence of signals downstream of different R/avr interacting partners into a single signaling pathway. Salicylic acid (SA) is required for the induction of SAR and involved in transducing the signal in target tissues. The SA signal is transduced through NPR1, a nuclear-localized protein that interacts with transcription factors that are involved in regulating SA-mediated gene expression. Some chemicals that mimic natural signaling compounds can also activate SAR. The application of biochemical activators to agriculture for plant protection is a novel idea for developing green chemical pesticide.

关 键 词：Systemic acquired resistance Signal transduction Salicylic acid. Activators Broad-spectrum disease resistance 

分 类 号：S311[农业科学—作物栽培与耕作技术]