Desiccation of the leaf mesophyll and its implications for CO₂ diffusion and light processing.

ABSTRACT: Leaves balance CO₂ and radiative absorption while maintaining water transport to maximise photosynthesis. Related species with contrasting leaf anatomy can provide insights into inherent and stress-induced links between structure and function for commonly measured leaf traits for important crops. We used two walnut species with contrasting mesophyll anatomy to evaluate these integrated exchange processes under non-stressed and drought conditions using a combination of light microscopy, X-ray microCT, gas exchange, hydraulic conductance, and chlorophyll distribution profiles through leaves. Juglans regia had thicker palisade mesophyll, higher fluorescence in the palisade, and greater low-mesophyll porosity that were associated with greater gas-phase diffusion (g_IAS ),

SUBMITTER: Momayyezi M 

PROVIDER: S-EPMC9314819 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature