Transient accumulation of 4-hydroxybenzoate and 3,5-dihydroxybenzoate by JS678 growing on 4-hydroxybenzaldehyde or 3,5-dihydroxybenzaldehyde as the sole carbon source. □, 3,5-dihydroxybenzaldehyde; △, 4-hydroxybenzaldehyde; ■, 3,5-dihydroxybenzoate; ▲, 4-hydroxybenzoate; gray open circles, OD600 of cells grown with 3,5-dihydroxybenzaldehyde; ○, OD600 of cells grown with 4-hydroxybenzaldehyde. Data represent the means and standard deviations from duplicate analyses.