Different Metabolic Roles for Alternative Oxidase in Leaves of Palustrine and Terrestrial Species.

ABSTRACT: The alternative oxidase pathway (AOP) is associated with excess energy dissipation in leaves of terrestrial plants. To address whether this association is less important in palustrine plants, we compared the role of AOP in balancing energy and carbon metabolism in palustrine and terrestrial environments by identifying metabolic relationships between primary carbon metabolites and AOP in each habitat. We measured oxygen isotope discrimination during respiration, gas exchange, and metabolite profiles in aerial leaves of ten fern and angiosperm species belonging to five families organized as pairs of palustrine and terrestrial species. We performed a partial least square model combined with variable importance for projection to reveal relationships between the electron partitioning to the AOP

SUBMITTER: Del-Saz NF 

PROVIDER: S-EPMC8600120 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature