The plant metabolome guides fitness-relevant foraging decisions of a specialist herbivore
| Autor: | Lingfei Hu, Ricardo A. R. Machado, Tobias Züst, Qi Su, Vanitha Theepan, Christelle A. M. Robert, Matthias Erb, Bernardus C. J. Schimmel |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Life Cycles Metabolite Social Sciences Plant Science 580 Plants (Botany) Biochemistry Plant Roots 01 natural sciences chemistry.chemical_compound Larvae Metabolites Psychology Foraging Secondary Metabolites Biology (General) 2. Zero hunger Appetitive Behavior Larva Ecology Animal Behavior biology General Neuroscience Eukaryota Plants Trophic Interactions Coleoptera Experimental Organism Systems Community Ecology Metabolome General Agricultural and Biological Sciences Research Article QH301-705.5 Research and Analysis Methods Zea mays General Biochemistry Genetics and Molecular Biology 03 medical and health sciences Model Organisms Plant and Algal Models Plant-Animal Interactions Botany Animals Grasses Herbivory Sugar Behavior Herbivore General Immunology and Microbiology Host (biology) Plant Ecology Ecology and Environmental Sciences Organisms Biology and Life Sciences Plant-Herbivore Interactions 15. Life on land biology.organism_classification Maize Benzoxazines Metabolism 030104 developmental biology Western corn rootworm chemistry Animal Studies Sugars Zoology Developmental Biology 010606 plant biology & botany |
| Zdroj: | PLoS Biology, Vol 19, Iss 2, p e3001114 (2021) PLoS Biology Machado, Ricardo A.R.; Theepan, Vanitha; Robert, Christelle A. M.; Züst, Tobias; Hu, Lingfei; Su, Qi; Schimmel, Bernardus C. J.; Erb, Matthias (2021). The plant metabolome guides fitness-relevant foraging decisions of a specialist herbivore. PLoS biology, 19(2), e3001114. Public Library of Science 10.1371/journal.pbio.3001114 |
| ISSN: | 1545-7885 |
| DOI: | 10.1371/journal.pbio.3001114 |
| Popis: | Plants produce complex mixtures of primary and secondary metabolites. Herbivores use these metabolites as behavioral cues to increase their fitness. However, how herbivores combine and integrate different metabolite classes into fitness-relevant foraging decisions in planta is poorly understood. We developed a molecular manipulative approach to modulate the availability of sugars and benzoxazinoid secondary metabolites as foraging cues for a specialist maize herbivore, the western corn rootworm. By disrupting sugar perception in the western corn rootworm and benzoxazinoid production in maize, we show that sugars and benzoxazinoids act as distinct and dynamically combined mediators of short-distance host finding and acceptance. While sugars improve the capacity of rootworm larvae to find a host plant and to distinguish postembryonic from less nutritious embryonic roots, benzoxazinoids are specifically required for the latter. Host acceptance in the form of root damage is increased by benzoxazinoids and sugars in an additive manner. This pattern is driven by increasing damage to postembryonic roots in the presence of benzoxazinoids and sugars. Benzoxazinoid- and sugar-mediated foraging directly improves western corn rootworm growth and survival. Interestingly, western corn rootworm larvae retain a substantial fraction of their capacity to feed and survive on maize plants even when both classes of chemical cues are almost completely absent. This study unravels fine-grained differentiation and combination of primary and secondary metabolites into herbivore foraging and documents how the capacity to compensate for the lack of important chemical cues enables a specialist herbivore to survive within unpredictable metabolic landscapes. This study shows how an important agricultural pest, the western corn rootworm, integrates nutrients (sugars) and plant defense compounds (benzoxazinoids) to navigate the maize rhizosphere and feed on the most nutritious roots. |
| Databáze: | OpenAIRE |
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