Free Amino Acid Concentrations in Leaves of Sodium-Deficient C₄ Plants

Abstract

Consistent changes in the free amino acid concentrations in response to sodium nutrition were observed in mature leaves of the C₄ species Amaranthus tricolor and Chloris gayana. The amino acids alanine, γ-aminobutyric acid and glycine were present in greater and aspartate and arginine in lower concentrations in mature leaves of sodium-deficient than in normal plants of both species.