Litters of photosynthetically divergent grasses exhibit differential metabolic responses to warming and elevated CO2

摘要: Climatic stress such as warming would alter physiological pathways in plants leading to changes tissue chemistry. Elevated CO2 could partly mitigate induced moisture stress, and the degree of this mitigation may vary with plant functional types. We studied composition structural non-structural metabolites senesced tissues Bouteloua gracilis (C4) Pascopyrum smithii (C3) at Prairie Heating Enrichment experiment, Wyoming, USA. hypothesized that P. B. respond unfavorable global change factors by producing osmoregulatory compounds are necessary combat stress. However, due inherent variation tolerance their photosynthetic CO2, we these species will exhibit differential response under different combinations conditions. Due a lower thermo-tolerance C4 photosynthesis expected greater metabo...