Photorespiratory glycine contributes to photosynthetic induction during low to high light transition.

ABSTRACT: Leaves experience near-constant light fluctuations daily. Past studies have identified many limiting factors of slow photosynthetic induction when leaves transition from low light to high light. However, the contribution of photorespiration in influencing photosynthesis during transient light conditions is largely unknown. This study employs dynamic measurements of gas exchange and metabolic responses to examine the contribution of photorespiration in constraining net rates of carbon assimilation during light induction. This work indicates that photorespiratory glycine accumulation during the early light induction contributes 5-7% to the additional carbon fixed relative to the low light conditions. Mutants with large glycine pools under photorespiratory conditions (5-formyl THF cycloligase

SUBMITTER: Fu X 

PROVIDER: S-EPMC11339310 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature