| Title: | Spodoptera litura larvae are attracted by HvAV-3h-infected S. litura larvae-damaged pepper leaves |
| Author(s): | Ming L; Du YW; Yuan GG; Su Q; Shi XB; Yu H; Chen G; |
| Address: | "Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan, People's Republic of China. College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, People's Republic of China. College of Agriculture, Yangtze University, Jingzhou, Hubei, People's Republic of China. Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, Hunan, People's Republic of China" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: Herbivore-induced plant volatiles (HIPVs) are important self-defense outputs of pepper plants to resist insect pests. Ascoviruses are pathogenic to the larvae of most lepidopteran vegetable pests. However, whether Heliothis virescens ascovirus 3h (HvAV-3h)-infected Spodoptera litura larvae can change pepper leaf HIPVs is not well understood. RESULTS: Spodoptera litura larvae preferred S. litura-infested leaves, and this preference was stronger with longer duration of S. litura infestation. In addition, S. litura larvae significantly chose pepper leaves damaged by HvAV-3h-infected S. litura over the healthy pepper leaves. Results also showed that S. litura larvae preferred leaves mechanically damaged and treated with oral secretions from HvAV-3h infected-S. litura larvae in a simulation test. We captured the volatiles emitted by leaves under six treatments. Results showed that the volatile profile changed with the different treatments. Testing of volatile blends, prepared to the proportion released showed that the blend from simulated HvAV-3h-infected S. litura larvae-damaged plants was the most attractive to S. litura larvae. Further, we also found that some of the compounds significantly attracted S. litura larvae at specific concentrations. CONCLUSION: HvAV-3h-infected S. litura can alter the release of HIPVs in pepper plants and thus become more attractive to S. litura larvae. We speculate that this may be due to alterations in the concentration of some compounds (such as geranylacetone and prohydrojasmon) affecting the behavior of S. litura larvae. (c) 2023 Society of Chemical Industry" |
| Keywords: | Animals Larva Spodoptera *Ascoviridae *Moths Herbivory Plant Leaves HIPVs Heliothis virescens ascovirus Spodoptera litura behavioral responses pepper; |
| Notes: | "MedlineMing, Lang Du, Yuan-Wen Yuan, Ge-Ge Su, Qi Shi, Xiao-Bing Yu, Huan Chen, Gong eng National Natural Science Foundation of China/ England 2023/03/12 Pest Manag Sci. 2023 Aug; 79(8):2713-2724. doi: 10.1002/ps.7449. Epub 2023 Mar 27" |
