Malate Exudation by Six Aerobic Rice Genotypes Varying in Zinc Uptake Efficiency

• Published in: Journal of environmental quality Vol. 38; no. 6; pp. 2315 - 2321
• Main Authors: Gao, Xiaopeng, Zhang, Fusuo, Hoffland, Ellis
• Format: Journal Article
• Language: English
• Published: Madison American Society of Agronomy, Crop Science Society of America, Soil Science Society 01.11.2009; American Society of Agronomy
• Subjects: aerobic conditions; Aerobiosis; analysis; Anions; Anions - metabolism; Bioavailability; Carboxylic Acids; Carboxylic Acids - metabolism; clay soils; cultivars; deficiency; Efficiency; Environmental conditions; Exudation; Genetic Variation; Genotype; Genotype & phenotype; Genotypes; growth & development; iron; lowland rice; Malate; Malates; Malates - metabolism; malic acid; metabolism; nutrient availability; nutrient deficiencies; nutrient solutions; nutrient uptake; nutrient use efficiency; Nutrients; organic-acids; Oryza; Oryza - growth & development; Oryza - metabolism; Oryza sativa; oryza-sativa l; phytosiderophore release; Plant Exudates; Plant Exudates - metabolism; plant nutrition; Plant Roots; Plant Roots - metabolism; plants; Rhizosphere; Rice; root exudates; root-growth; Roots; Soil; Soil - analysis; Soil properties; Soil solution; Soils; Studies; Uptakes; Zinc; Zinc - metabolism

Zinc (Zn) uptake by plant roots from soils low in plant-available Zn may be increased by Zn-mobilizing rhizosphere processes, including exudation of low-molecular-weight organic anions. A rhizotron experiment with a low Zn clay soil and a nutrient solution experiment were conducted to test if this o...