Light-promoted diffusional amino acid efflux from Commelina leaf disks

The release (=the measured loss) of amino acids was studied in Commelina benghalensis leaf disks. The release is assumed to be the result of influx and efflux, therefore, both movements were investigated. The uptake of 14C-labeled valine exhibited a biphasic isotherm. The uptake was pH-dependent, especially at low substrate concentrations (pH optimum 4.8… CONTINUE READING