The effects of photosynthetic rate on respiration in light, starch/sucrose partitioning, and other metabolic fluxes within photosynthesis.

ABSTRACT: In the future, plants may encounter increased light and elevated CO₂ levels. How consequent alterations in photosynthetic rates will impact fluxes in photosynthetic carbon metabolism remains uncertain. Respiration in light (R_L) is pivotal in plant carbon balance and a key parameter in photosynthesis models. Understanding the dynamics of photosynthetic metabolism and R_L under varying environmental conditions is essential for optimizing plant growth and agricultural productivity. However, measuring R_L under high light and high CO₂ (HLHC) conditions poses challenges using traditional gas exchange methods. In this study, we employed isotopically nonstationary metabolic flux analysis (INST-MFA) to estimate R_L and investigate phot

SUBMITTER: Xu Y 

PROVIDER: S-EPMC11897357 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature