Figure 4From: Citramalic acid and salicylic acid in sugar beet root exudates solubilize soil phosphorusStimulation of citramalic acid exudation by low P availability. Extracted ion chromatogram from HILIC-HPLC analysis of citramalic acid standard (100 ng/mL) (solid line), root exudates generated under low-P conditions (dashed line), and root exudates generated under high-P conditions (dotted line). Mass transition 147 > 87 after negative ionization was recorded.Back to article page