Saturation of the desorbable component reflects the equilibrium between Cd2+ and other cations for binding to cell wall sites, rather than absolute saturation of binding sites with Cd2+.
Other reported effects of Al exposure are the disruption of Ca2+ homeostasis [ 6, 7], increased ACC oxidase activity with a consequent increase in ethylene production [ 8], Al binding to cell wall polysaccharides [ 9, 10] and reduced membrane fluidity [ 11].
Examination of cells stained with Aniline Blue and concanavalin A FITC, fluorescent dyes binding to cell wall 1,3-β d-glucan and mannoproteins, respectively, revealed that pun1 ∆ cells exhibited significantly weaker fluorescence compared to wild-type cells, indicating a reduced amount of these cell wall components (Fig. 5A, upper and middle panel).
Because higher eukaryotic cells do not have a cell wall and because LL-37 exerts its effects by binding to cell-wall components, these components may be drug candidates for Candida infection.
Cell wall binding domains play a crucial role in the non-covalent attachment of proteins to cell walls.
That the enzyme binding to surrounding cell walls exhibits different "absolute" fluorescence intensities in different images (i.e. different fibers) is irrelevant in this particular study, as what is sought is whether one or more enzymes (or protein) has increased binding affinity to dislocations, as compared to the surrounding cell wall.
With few exceptions, LM11 gave much the same IF results, binding to tracheid cell walls.
We suggest that binding of Na+ ions to cell wall components might influence the passage of Na+ and that Na+ can influence the binding of other ions and hinder the function of pectin during cell growth.
Low Cd concentrations in the uptake solutions were chosen to minimise Cd binding to root cell wall constituents and to simulate soil solution Cd2+ concentrations that might be experienced in non-polluted agricultural soils.
