Fig. 5
Low to medium expression of XylR improved growth rate of B. sacchari. Late-exponential cells grown in MMG were diluted 1:100 in MMX with increasing concentrations of arabinose (0–7.5 mM) and transferred to 96-well plates. Optical density (OD600 nm) was measured in triplicate every 15 min for 24 h. The μmax change (%) was determined by comparing the growth rate of each strain with the control strain expressing RFP induced with the same concentration of arabinose