How do plants achieve tolerance to phosphorus deficiency? Small causes with big effects

• Published in: Plant physiology (Bethesda) Vol. 133; no. 4; pp. 1947 - 1958
• Main Author: Wissuwa, M
• Format: Journal Article
• Language: English
• Published: Rockville, MD American Society of Plant Biologists 01.12.2003; American Society of Plant Physiologists
• Subjects: Acclimatization - physiology; Agricultural soils; Agronomy. Soil science and plant productions; Biological and medical sciences; Biological Transport; cultivars; dry matter accumulation; Economic plant physiology; Environmental Stress and Adaptation; Fundamental and applied biological sciences. Psychology; genotype; grain crops; mathematical models; Metabolism; Metabolism. Physicochemical requirements; Mineral nutrition; Modeling; Models, Biological; Nutrition. Photosynthesis. Respiration. Metabolism; Oryza - growth & development; Oryza - physiology; Oryza sativa; Parametric models; Phosphorus; Phosphorus - deficiency; Phosphorus - metabolism; Plant growth; Plant physiology and development; plant response; Plant roots; Plant Roots - growth & development; plant stress; Plants; Rice; Root growth; roots; simulation models; Simulations; soil nutrients; stress tolerance; uptake mechanisms; Monocotyledones; Genetic variability; Nutrition; Root; Growth; Deficiency; Dry matter; Tolerance; Environmental factor; Phosphorus; Forecast model; Nutrient uptake; Inorganic element; Cereal crop; Oryza sativa; Gramineae; Angiospermae; Nutrient; Spermatophyta; Intraspecific comparison; Biological accumulation; Adaptation

Genotypic differences in phosphorus (P) uptake from P-deficient soils may be due to higher root growth or higher external root efficiency (micrograms of P taken up per square centimeter of root surface area). Both factors are highly interrelated because any additional P provided by externally effici...