Figure 2

Number of FZB42 genes altered in transcription in response to root exudates at different exudate concentrations and cell densities. Maize root exudates were supplemented in three concentrations (0.25 mg/ml, 0.5 mg/ml and 1.0 mg/ml) to FZB42 cultures and total RNA was prepared from the bacterial cells harvested at two optical densities (OD₆₀₀ = 1.0 and OD₆₀₀ = 3.0). Genes significantly altered in transcription (q ≤ 0.01 and fold change ≥1.5) by presence of root exudates are represented in the figure.