Heat wave event facilitates defensive responses in invasive C3 plant Ambrosia artemisiifolia L. under elevated CO₂ concentration to the detriment of Ophraella communa.

ABSTRACT: To predict and mitigate the effects of climate change on communities and ecosystems, the joint effects of extreme climatic events on species interactions need to be understood. Using the common ragweed (Ambrosia artemisiifolia L.)-leaf beetle (Ophraella communa) system, we investigated the effects of heat wave and elevated CO₂ on common ragweed growth, secondary metabolism, and the consequent impacts on the beetle. The results showed that elevated CO₂ and heat wave facilitated A. artemisiifolia growth; further, A. artemisiifolia accumulated large amounts of defensive secondary metabolites. Being fed on A. artemisiifolia grown under elevated CO₂ and heat wave conditions resulted in the poor performance of O. communa

SUBMITTER: Tian Z 

PROVIDER: S-EPMC9363847 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature