Research in Plant Disease

Fig. 2.

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Fig. 2.

Antiviral immune mechanisms in plants. (A) NBS-LRR R-mediated dominant resistance relies on the interaction between an avirulence factor and a specific R gene, and contributes resistance after the virus infection into the plant for several days. HR-mediated defense response suppresses the virus replication in the infected and neighboring cells. (B) Recessive resistance that is conferred by a recessive gene mutation that encodes a host factor critical for viral infection is a passive and non-inducible resistance. (C) RNA interference (RNAi) targets viral genome. During the replication of viruses, they reach the stage of ssRNA or dsRNA, which trigger host defense responses. (D) Hormones-mediated resistance against viruses is introduced here as antiviral function of salicylic acid (SA) and methyl-salicylic acid (Me-SA) in systemic acquired resistance (SAR).

Res. Plant Dis. 2018;24:9-25
© 2018 Res. Plant Dis.