Figure 5From: Citramalic acid and salicylic acid in sugar beet root exudates solubilize soil phosphorusStimulation of salicylic acid exudation by low P availability. Extracted ion chromatogram from RP-HPLC analysis of salicylic acid standard (100 ng/ml) (solid line), root exudates generated under low-P conditions (dashed line), and root exudates (dotted line) generated under high-P conditions. Mass transition 137 > 93 after negative ionization was recorded.Back to article page