Environmental factors have a greater influence on photosynthetic capacity in C₄ plants than biochemical subtypes or growth forms.

ABSTRACT: Our understanding of how photosynthetic capacity varies among C₄ species and across growth and measurement conditions remains limited. We collated 1696 CO₂ response curves of net CO₂ assimilation rate (A/C_i curves) from C₄ species grown and measured at various environmental conditions and used these data to estimate the apparent maximum carboxylation activity of phosphoenolpyruvate carboxylase (V_pmaxA) and CO₂-saturated net photosynthetic rate (A_max), two key parameters describing photosynthetic capacity. We examined how V_pmaxA and A_max vary with species-specific traits, growth and measurement conditions. We found little systematic variation of V_pmaxA and A_max

SUBMITTER: Fan Y 

PROVIDER: S-EPMC12489297 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature