Relative expression levels of OsPik-2-like in rice leaves after different treatments. (a) Phenotypes of rice plants that had been infested by one 3rd-instar LF larva. (b–d) Mean transcript levels (±SE, n = 3~6) of OsPik-2-like in rice leaves that were infested with one 3rd LF larva (LF) (b), or punctured by a fabric pattern wheel rolling (Wound) (c), or treated with methyl jasmonate (MeJA) by root absorption (d). Con, non-treated plants; Buf: plants treated with the same concentration of ethanol in the nutrient solution as MeJA treatment. Asterisks represent significant differences between the treatments and controls at each time point (* p < 0.05, ** p < 0.01, and *** p < 0.001, Student’s t-tests or t tests with Welch’s correction).