Departamento de Microbiología, Escuela Técnica Superior de Ingenieros Agrónomos y de Montes, 14071 Córdoba, Spain; Laboratorium voor Moleculaire Celbiologie, Katholieke Universiteit Leuven, 3001 Hererlee, Belgium
Abstract:
Abstract The capacity to transport potassium and to discriminate between the different alkali cations has been found to affect sodium tolerance in Saccharomyces cerevisiae . Mutants with a defective capacity to transport K+ were more sensitive to high concentrations of Na+ because they accumulated more Na+ and less K+ than wild-type cells which showed high discrimination between K+ and Na+.