Fig. 1: Comparison of high temperature tolerance between strains FDHY23 and LHP1044.

a Thermotolerance spot assays. The cultures were diluted 5 times with a 5-fold dilution factor from an initial OD600 of 0.6. They were then incubated at temperatures of 30 °C, 46 °C, 47 °C, and 48 °C, respectively. b Growth curves. It was plotted based on the correlation between cell density (OD600) and culture time at 30 °C, 46 °C, and 47 °C, respectively. c Maximum specific growth rate during the logarithmic phase. For growth curves and maximum specific growth, values were calculated as average±SD from four biological replicates. The red and blue colors represent strains FDHY23 and LHP1044, respectively. **: p < 0.01.