INSR and benign prostatic hyperplasia: However, although BPH induced the accumulation of JA, JA-Ile, ABA and H2O2 in plants, no difference in the levels of these signal molecules was observed between the WT and ir-ibak1 plants, except for the constitutive level of H2O2, which was 1.3-fold higher in irIBAK1-1 plants than in WT plants (Figure S6a–d).