title: Sodium absorption by intact sugar beet plants.
abstract: Sodium absorption by intact sugar beet plants (Beta vulgaris) was found to be mediated by at least two distinct mechanisms when uptake was studied over a wide range of Na and K concentrations. The first mechanism operates at low Na concentrations (<1 milliequivalent per liter); presence of K completely blocks this mechanism for Na. The second mechanism operates at high Na concentrations (>1 milliequivalent per liter), transporting Na as well as K; but apparently this mechanism is not active for Na absorption in young sugar beet plants up to the 10-leaf stage.
authors.affiliation: Department of Soils and Plant Nutrition, University of California, Berkeley, California 94720.
authors.forename: A M
authors.initials: AM
authors.lastname: El-Sheikh
authors.forename: A
authors.initials: A
authors.lastname: Ulrich