Fig. 2.

Metabolic responses of S. melonis and M. extorquens during growth on plants. Up-regulation of TCA cycle proteins during leaf colonization of S. melonis Fr1 (A). Several pathways feeding into this central metabolic cycle indicate which plant derived substrates might be utilized during phyllosphere growth. Pathway and involved proteins of oxalate metabolism by M. extorquens PA1 (B). Arrows are shown in blue (up-regulated) and yellow (down-regulated) if corresponding proteins are significantly regulated (fold change ≥ 2, p value ≤ 0.05). Fold changes indicated below the figures are logarithmized (log2); a star indicates a p value ≤ 0.05.