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Climate Change Modulates Multitrophic Interactions Between Maize, A Root Herbivore, and Its Enemies by Anouk Guyer; Cong van Doan; Corina Maurer; Ricardo A. R. Machado; Pierre Mateo; Katja Steinauer; Lucie Kesner; Günter Hoch; Ansgar Kahmen; Matthias Erb; Christelle A. M. Robert is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Abstract How climate change will modify belowground tritrophic interactions is poorly understood, despite their importance for agricultural productivity. Here, we manipulated the three major abiotic factors associated with climate change (atmospheric CO~2~, temperature, and soil moisture) and investigated their individual and joint effects on the interaction between maize, the banded cucumber beetle (Diabrotica balteata), and the entomopathogenic nematode (EPN) Heterorhabditis bacteriophora. Changes in individual abiotic parameters had a strong influence on plant biomass, leaf wilting, sugar concentrations, protein levels, and benzoxazinoid contents. Yet, when combined to simulate a predicted climate scenario (Representative Concentration Pathway 8.5, RCP 8.5), their effects mostly counter-balanced each other. Only the sharp negative impact of drought on leaf wilting was not fully compensated. In both current and predicted scenarios, root damage resulted in increased leaf wilting, reduced root biomass, and reconfigured the plant sugar metabolism. Single climatic variables modulated the herbivore performance and survival in an additive manner, although slight interactions were al

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Author

Anouk Guyer; Cong van Doan; Corina Maurer; Ricardo A. R. Machado; Pierre Mateo; Katja Steinauer; Lucie Kesner; Günter Hoch; Ansgar Kahmen; Matthias Erb; Christelle A. M. Robert

Publisher

Springer Science and Business Media LLC

Published

2021

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)