Insect Science (2017) 24, 947-960

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Sergio Rasmann, Alison Bennett, Arjen Biere, Alison Karley and Emilio Guerrieri (2017)
Root symbionts: Powerful drivers of plant above- and belowground indirect defenses
Insect Science 24 (6), 947-960
Abstract: Soil microbial mutualists of plants, including mycorrhizal fungi, non-mycorrhizal fungi and plant growth promoting rhizobacteria, have been typically characterized for increasing nutrient acquisition and plant growth. More recently, soil microbes have also been shown to increase direct plant defense against above- and belowground herbivores. Plants, however, do not only rely on direct defenses when attacked, but they can also recruit pest antagonists such as predators and parasitoids, both above and belowground, mainly via the release of volatile organic compounds (i.e., indirect defenses). In this review, we illustrate the main features and effects of soil microbial mutualists of plants on plant indirect defenses and discuss possible applications within the framework of sustainable crop protection against root- and shoot-feeding arthropod pests. We indicate the main knowledge gaps and the future challenges to be addressed in the study and application of these multifaceted interactions.
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Database assignments for author(s): Emilio Guerrieri, Sergio Rasmann

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Macrosiphum euphorbiae
Tetranychus urticae
Phytoseiulus persimilis (predator)
Aphidius ervi (parasitoid)
Trichoderma longibrachiatum (antagonist)