Organic acids and Fe deficiency: a review

• Published in: Plant and soil Vol. 241; no. 1; pp. 75 - 86
• Main Authors: ABADIA, Javier, LOPEZ-MILLAN, Ana-Flor, ROMBOLA, Adamo, ABADIA, Anunciacion
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Dordrecht Kluwer Academic Publishers 01.04.2002; Springer; Springer Nature B.V
• Subjects: Absorption. Translocation of ions and substances. Permeability; Acid soils; Agronomy. Soil science and plant productions; Anemia; Anions; Biological and medical sciences; Citrates; Economic plant physiology; Fundamental and applied biological sciences. Psychology; Hypochromic anemia; Iron; Leaves; Metabolism; Metabolism. Physicochemical requirements; Nutrient deficiency; Nutrition. Photosynthesis. Respiration. Metabolism; Organic acids; Physiological diseases. Varia; Phytopathology. Animal pests. Plant and forest protection; Plant metabolism; Plant physiology and development; Plant roots; Plants; Sugar beets; Water and solutes. Absorption, translocation and permeability; Xylem; Exudate; Metabolite; Biological model; Biochemistry; Iron; Review; Inorganic element; Organic acids; Plant part; Physiology; Chemical composition; Chemical concentration; Cultivated plant; Organic compounds; Plant tissue; Nutrition; Deficiency; Iron chlorosis; PLANT NUTRITION; Bioinorganic chemistry; Organic anion; Spermatophyta; Trace element (nutrient); Soil plant relation; Experimental plant
• ISSN: 0032-079X; 1573-5036
• DOI: 10.1023/A:1016093317898

Organic acid concentrations often increase with iron deficiency in different plant parts such as roots, leaves and stem exudates. The review summarises data available on the changes in the concentrations of organic anions in plants with iron deficiency and the effects of these changes in plant metabolism. The paper reviews data available in the literature on the changes in xylem and apoplasmic fluid composition with iron deficiency, both in plants grown in controlled conditions and in the field, and discusses the possible ways of iron complexation and transport in these compartments. The characteristics of the iron reduction and uptake by the iron-deficient leaf mesophyll cells are also discussed, with especial emphasis in the possible roles of organic acids in these processes. Both the possible causes and functions of the organic acid concentration increases in iron-deficient plants are reviewed.