Fig. 1

Ammonium production in AZBB163 grown at varied temperatures. Shown are the ammonium production (top) and OD₆₀₀ (bottom) for AZBB163 grown at 24 °C, 26 °C, 28 °C, and 30 °C. Cultures were grown in Burk’s medium and were shaken at 180 rpm in 125 mL Erlenmeyer flasks with 60 mL of medium. Bottom graph optical density plotted on a log₂-based scale (y-axis). Data points indicate averages, while error bars represent standard deviation (N = 4). Insets show the yield obtained at 72 h (top) and the OD₆₀₀ obtained at 72 h (bottom) versus temperature