Concentration–response relationships for CquiOR136•CquiOrco-expressing oocytes. Dose-dependence curves were generated for DEET, picaridin, IR3535, PMD, jasmonic acid, and methyl jasmonate. The four repellents and methyl jasmonate showed nearly the same sensitivity (threshold <10 µM), but their responses differed at high concentrations. n = 4 oocytes; all six compounds were tested in the same oocyte at the four tested concentrations, starting from low to high doses.