Effects of major vein blockage and aquaporin inhibition on leaf hydraulics and stomatal conductance.

ABSTRACT: The density and architecture of leaf veins determine the network and efficiency of water transport within laminae and resultant leaf gas exchange and vary widely among plant species. Leaf hydraulic conductance ( K_leaf) can be regulated by vein architecture in conjunction with the water channel protein aquaporin. However, our understanding of how leaf veins and aquaporins affect leaf hydraulics and stomatal conductance ( g_s) remains poor. By inducing blockage of the major veins and inhibition of aquaporin activity using HgCl₂, we examined the effects of major veins and aquaporins on K_leaf and g_s in species with different venation types. A vine species, with thick first-order veins and low vein density, displayed a rapidly declined g

SUBMITTER: Harayama H 

PROVIDER: S-EPMC6571453 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature