Identification of tomato genes responsive to loliolide, a metabolite of carotenoid metabolic pathways

Loliolide, a metabolite of carotenoid metabolic pathways in plants, was identified as an inducer of resistance to herbivores such as the two-spotted spider mite, Tetranychus urticae, and the common cutworm, Spodoptera litura. To identify host factors involved in loliolide-induced herbivore resistance, microarray analysis of tomato plants treated with loliolide was performed. We identified several cell wall-associated defense genes as loliolide-responsive genes. Genes that were preferentially expressed in tomato (Solanum lycopersicum cv. Micro-Tom) 12 hours after treatment with loliolide were explored. The microarray analysis was performed in triplicate.