Atmospheric CO₂ Concentration and N Availability Affect the Balance of the Two Photosystems in Mature Leaves of Rice Plants Grown at a Free-Air CO₂ Enrichment Site.

ABSTRACT: Atmospheric CO₂ concentration ([CO₂]) has been substantially increasing. Responses of leaf photosynthesis to elevated [CO₂] have been intensively investigated because leaf photosynthesis is one of the most important determinants of crop yield. The responses of photosynthesis to elevated [CO₂] can depend on nitrogen (N) availability. Here, we aimed to investigate the significance of the appropriate balance between two photosystems [photosystem I (PSI) and photosystem II (PSII)] under various [CO₂] and N levels, and thus to clarify if responses of photosynthetic electron transport rates (ETRs) of the two photosystems to elevated [CO₂] are altered by N availability. Thus, we examined parameters of the two photosystems in mature

SUBMITTER: Ozaki H 

PROVIDER: S-EPMC7296123 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature