Properties of the Isolated Intact Chloroplast at Cytoplasmic K+ Concentrations

Abstract
Photosynthesis, stroma-pH, and internal K+ and Cl concentrations of isolated intact chloroplasts from Spinacia oleracea, as well as ion (K+, H+, Cl) movements across the envelope, were measured over a wide range of external KCl concentrations (1-100 millimolar).