Are resistance (R) genes expressed in response to pathogen attack - or only defense genes - as part of the plant immune response? R proteins act as receptors to recognize pathogen effectors and an interaction between R protein and effector stimulates Effector Triggered Immunity (ETI) which itself involves the expression of defense related genes. However, are R genes also expressed as part of ETI?
Raoul A Robinson had some interesting work in potato resistance.
The defeated R genes give partial resistance reactions.
When a series of these are present a horizontal stable resistance is available.
Annual Phyotpathology Review has some good review articles.
hi,
In short, the answer is yes. Although most of the R genes mechanism shows cascade pathway, these genes are part of Effector triggered
immunity (ETI) pathway.
Dear Ruby Metzner Plants have developed a complex defense system against diverse pests and pathogens. Once pathogens overcome mechanical barriers to infection, plant receptors initiate signaling pathways driving the expression of defense response genes. I have attached some PDFs; hope these will provide useful insight regarding answer to your question.
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