Elevated CO2 has concurrent effects on leaf and grain metabolism but minimal effects on yield in wheat.

ABSTRACT: While the general effect of CO2 enrichment on photosynthesis, stomatal conductance, N content, and yield has been documented, there is still some uncertainty as to whether there are interactive effects between CO2 enrichment and other factors, such as temperature, geographical location, water availability, and cultivar. In addition, the metabolic coordination between leaves and grains, which is crucial for crop responsiveness to elevated CO2, has never been examined closely. Here, we address these two aspects by multi-level analyses of data from several free-air CO2 enrichment experiments conducted in five different countries. There was little effect of elevated CO2 on yield (except in the USA), likely due to photosynthetic capacity acclimation, as reflected by protein profiles. In additio

SUBMITTER: Tcherkez G 

PROVIDER: S-EPMC7751139 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature