Figure 4 from Candidate genes for resistance and susceptibility to the bird cherry-oat aphid (Rhopalosiphum padi L.) in barley (Hordeum vulgare L.) | Semantic Scholar
R genes: Structure, recognition, signaling, & evolution – part 1 Major classes of R genes R gene structure Early signaling events R gene evolution. - ppt download
Resistance genes on the verge of plant–virus interaction: Trends in Plant Science