Interspecific variation and elevated CO₂ influence the relationship between plant chemical resistance and regrowth tolerance.

ABSTRACT: To understand how comprehensive plant defense phenotypes will respond to global change, we investigated the legacy effects of elevated CO₂ on the relationships between chemical resistance (constitutive and induced via mechanical damage) and regrowth tolerance in four milkweed species (Asclepias). We quantified potential resistance and tolerance trade-offs at the physiological level following simulated mowing, which are relevant to milkweed ecology and conservation. We examined the legacy effects of elevated CO₂ on four hypothesized trade-offs between the following: (a) plant growth rate and constitutive chemical resistance (foliar cardenolide concentrations), (b) plant growth rate and mechanically induced chemical resistance, (c) constitutive resistance and reg

SUBMITTER: Decker LE 

PROVIDER: S-EPMC7319169 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature