Comparative expression characteristics of AhRRS5 between resistant and susceptible varieties under hormones and R. solanacearum treatments. (a) AhRRS5 showed two expression peaks in response to SA within 24 h, and it up‐regulated over 32‐fold in susceptible variety at 3 HPT, much greater than in resistant one. (b) AhRRS5 increased expression under ABA treatment with one peak; it up‐regulated later in the susceptible but >16‐fold at 24 h. (c) AhRRS5 up‐regulated with one peak within 24 h with nearly 16‐fold at 6 h in the resistant variety. (d) AhRRS5 responded differently between resistant and susceptible peanut with MeJA treatment, down‐regulated in the susceptible peanut and up‐regulated in the resistant ones with two peaks of over eightfold increase. (e) AhRRS5 was up‐regulated higher in susceptible variety especially after 24 hpt with inoculation of R. solanacearum. XH‐Mock: susceptible variety Xinhuixiaoli without treatment; YY‐Mock: resistant variety Yueyou 92 without treatment. XH‐SA, XH‐ABA, XH‐ET and XH‐MeJA: susceptible variety treated with SA, ABA, ET and MeJA, respectively; YY‐SA, YY‐ABA, YY‐ET and YY‐MJA, resistant variety treated with SA, ABA, ET and MeJA, respectively. The relative expression level of AhRRS5 in peanut plants at various time course was compared with mock or control, which was set to 1. The asterisk indicate a significant difference (SNK test,*P‐value <0.05 or **P‐value <0.01), Error bars indicate the standard error.