
TY  - JOUR
A1  - Johansen, C 
A1  - Luttge, U 
T1  - A Comparison of Potassium and Chloride Uptake by <i>Tradescantia albiflora</I> Leaf Cells at Different KCI Concentrations
JF  - Functional Plant Biology
JO  - Functional Plant Biol.
Y1  - 1975
VL  - 2
IS  - 4
SP  - 471
EP  - 479
KW  - 
UR  - https://doi.org/10.1071/PP9750471 
N2  - Light stimulates K+ and Cl- uptake into T. albiflora leaf slices from solutions through which N*2 is bubbled, and not from aerated solutions, at KCl concentrations of 0.5, 5 and 20 mM. The metabolic inhibitors CCCP, DCMU and oligomycin affect K+ and Cl- uptake similarly at each of these KCl concentrations. The results suggest that both K+ and Cl- uptake under all conditions studied are driven by energy derived from a cytoplasmic pool of ATP. In aerobic solutions in the light ATP can be supplied by either oxidative phosphorylation or photophosphorylation while in N*2-bubbled solutions in the light non-cyclic photophosphorylation and possibly oxidative phosphorylation, utilizing photosynthetically evolved O*2, provide ATP. As Cl- uptake appears to be independent of K+ uptake, it is suggested that ion uptake by T. albiflora leaf cells may occur according to a mechanism which has been proposed for other green cells, where K+ and CI- are thought to exchange for H+ and OH- respectively. 
ER  -

