The multiple nucleopolyhedrovirus of Spodoptera frugiperda (SfMNPV) plays an important role in regulating its natural host and has high potential for use as a bioinsecticide. However, information about how agricultural practices such as fertilization and plant biotic interactions affect the biocontrol efficacy of SfMNPV is limited. In this study, we examined how multitrophic maize–mycorrhiza–insect herbivore interactions affect the biocontrol efficacy of SfMNPV against S. frugiperda under full and reduced mineral nitrogen fertilization. Two fully factorial greenhouse pot experiments with three factors were performed: (i) arbuscular mycorrhizal fungi (AMF) (with and without AMF), (ii) nitrogen fertilization (50% and 100% N), and (iii) insect (with and without of S. frugiperda). The biocontrol efficacy of SfMNPV against S. frugiperda was examined using detached leaves under controlled environmental conditions.

中文翻译：

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玉米菌根降低了叶面昆虫草食性草地贪夜蛾对其同源核多角体病毒的敏感性

草地夜蛾的多核多角体病毒（SfMNPV）在调节其天然宿主方面发挥着重要作用，具有作为生物杀虫剂的巨大潜力。然而，关于施肥和植物生物相互作用等农业实践如何影响 SfMNPV 生物防治功效的信息是有限的。在这项研究中，我们研究了多营养玉米-菌根-昆虫食草动物的相互作用如何影响 SfMNPV在完全和减少矿物氮施肥下对S. frugiperda的生物防治功效。进行了两个具有三个因素的全因子温室盆栽实验：（i）丛枝菌根真菌（AMF）（有和没有 AMF），（ii）施氮肥（50% 和 100% N），和（iii）昆虫（有和没有 AMF）没有的S. frugiperda）。在受控环境条件下使用分离的叶子检查SfMNPV 对草地贪夜蛾的生物防治功效。