Biochemical metabolic enhancement acting as a dominant driver in intra-leaf CO2 diffusional response to soil nitrogen supplying in Soybean.

ABSTRACT: Biochemical metabolism and anatomical structure within leaf tissues have been proposed as the two principal mechanisms underpinning the rapid responsiveness of mesophyll conductance (gm) to environmental perturbations; nevertheless, empirical evidence distinguishing which of these factors acts as the dominant driver remains scarce. The response of intra-leaf CO2 diffusion conductance including gm and stomatal conductance (gsc) to soil nitrogen (N) change in soybean was systematically quantified in leaf biochemical and structural characteristics. Our data revealed that (i) soil N made a positive effect on intra-leaf CO2 diffusion and carbon assimilation that gm and An (net photosynthetic rate) exhibited a significant positive response to increasing N supplying from 7.5 to 15.0 g urea m-2 wh

SUBMITTER: Zuo Q 

PROVIDER: S-EPMC12857951 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature