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Table 1 Number of HPLC-MS signals in sugar beet root exudates enhanced under low-P conditions

From: Citramalic acid and salicylic acid in sugar beet root exudates solubilize soil phosphorus

Harvest Negative ionization (m/z 100-400) Negative ionization (m/z 400-1000) Positive ionization (m/z 100-1000)
1st 35 1 1
2nd 12 8 7
3rd 15 4 6
  1. The criterion for the inclusion of a signal in the list was a threshold of at least 5-times enhancement of signal intensity after normalization for low-P as compared to high-P conditions.