Different Maize Ear Rot Fungi Deter the Oviposition of Yellow Peach Moth (Conogethes punctiferalis (Guenée)) by Maize Volatile Organic Compounds

Yellow peach moth (Conogethes punctiferalis (Guenée), (Lepidoptera: Crambidae), YPM) and maize ear rot are important pests diseases of (Zea mays L., (Poales: Poaceae)). In recent years, YPM has become the most destructive pest in Huang-Huai-Hai summer region China via tunneling larvae into ears. Interestingly, infestation aggravates occurrence causes heavier yield loss field. However, few studies report whether would also affect behavior YPM. Here, we identified effects caused by four different fungi on ears’ volatile organic compounds (VOCs) cascading The current results found that mated females showed a preference for mock-inoculated ears (MIM) or mechanically damaged (MDM) but repellence to Penicillium oxalicum (Eurotiales: Aspergillaceae)-infected (POM), Trichoderma asperellum (Hypocreales: Hypocreaceae)-infected (TAM), Aspergillus phoenicis (APM), flavus (AFM) oviposition selection four-arm olfactometer experiments, indicating VOCs emitting from fungi-infected were all repellent females. Further analyses 57 treatments. partial least squares discriminant analysis (PLS-DA) displayed separation between TAM, APM, AFM POM, MDM, MIM, with 24.3% 19.1% explanation rates first two PLS components. Moreover, relative quantities eight common treatments lower, other three higher than those MIM MDM. There 17 unique conclusion, these suggested negatively affected changing both components proportions VOCs. These behavior-modifying may form basis development attractant formulations YPM’s management future.