Amino acids regulate salinity-induced potassium efflux in barley root epidermis

• Published in: Planta Vol. 225; no. 3; pp. 753 - 761
• Main Authors: Cuin, Tracey Ann, Shabala, Sergey
• Format: Journal Article
• Language: English
• Published: Berlin Berlin/Heidelberg : Springer-Verlag 01.02.2007; Springer-Verlag; Springer; Springer Nature B.V
• Subjects: Absorption. Translocation of ions and substances. Permeability; adaptation; Agronomy. Soil science and plant productions; Amino Acids; Amino Acids - pharmacology; Barley; Biological and medical sciences; Biological Transport; Biological Transport - drug effects; Cell membranes; drug effects; Economic plant physiology; Epidermis; free amino acids; Fundamental and applied biological sciences. Psychology; homeostasis; Homeostasis - drug effects; Hordeum; Hordeum - drug effects; Hordeum - metabolism; Membrane; Membrane potential; metabolism; Nutrition. Photosynthesis. Respiration. Metabolism; ornithine; pharmacology; Plant cells; plant damage; Plant Epidermis; Plant Epidermis - drug effects; Plant Epidermis - metabolism; Plant Roots; Plant Roots - drug effects; Plant Roots - metabolism; Plants; plasma membrane; Potassium; Potassium - metabolism; Potassium Channels; Potassium Channels - metabolism; Potassium homeostasis; Salinity; sodium; Sodium Chloride; Sodium Chloride - pharmacology; Solutes; Stress; valine; Monocotyledones; Hordeum vulgare; Root; Homeostasis; Amino acids; Stress; Salinity; Barley. Membrane Potassium homeostasis; Gramineae; Aminoacid; Angiospermae; Stress· Adaptation; Spermatophyta; Adaptation

The amino acid content increases substantially in salt-stressed plants. The physiological relevance of this phenomenon remains largely unknown. Using the MIFE ion flux measuring technique, we studied the effects of physiologically relevant concentrations of 26 amino acids on NaCl-induced K⁺ flux fro...