Sub-optimal temperature leads to tighter coupling between photosynthetic electron transport and CO2 assimilation under fluctuating light in maize.

ABSTRACT: The C4 carbon concentrating pathway promotes high CO2 assimilation rates. To keep C4 photosynthesis energetically efficient, electron transport reactions and downstream biochemistry need to be carefully balanced. Here we use a combination of noninvasive measurements and metabolic profiling to study the efficiency of C4 photosynthesis in maize (Zea mays) under 2 conditions that can lead to decoupling between electron transport and carbon assimilation: fluctuating light and suboptimal temperature. Measurements were performed under 3 fluctuating light regimes and at 3 temperatures, providing the most detailed study to date of the interaction between fluctuating light and suboptimal temperature on the photosynthetic performance of maize, an important global crop. At room temperature, CO2 assim

SUBMITTER: Sales CRG 

PROVIDER: S-EPMC12631774 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature