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Interaction Mechanism between Plant Resistance Gene and Pathogen Avirulence Gene
He Feng, Wang Changchun∗, Wang Fengqing, Yang Ling∗
The College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
Abstract: Plants have developed two types of mechanism of disease resistance to pathogens in evolutionary processes， which are PAMP-triggered immunity (PTI) and effector-triggered immunity (ETI). Disease resistance based on gene-for-gene hypothesis is one type of ETI. Conserved NB-LRR R proteins of plants recognized variable Avr proteins of pathogens then activate signaling and result in hypersensitive response. Gene-for-gene resistance is displayed by indirect or direct interaction between products of both resistance gene and avirulence gene. This paper reviews progresses on R/Avr recognition mechanisms with highlighting that indirect interaction of R protein and Avr protein is the main type of interaction between pathogen and host.
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