Fig. 6

Hydrogen peroxide production and consumption analysis. GMC oxidoreductase gene (Y903_RS0107765) relative expression levels of P. ananatis Sd-1 grown in the presence of glucose (Glu) and rice straw (RS) substrates (a). Enzyme activity of GMC oxidoreductase during growth of P. ananatis Sd-1 on glucose (Glu) and rice straw (RS) substrates (b). Hydrogen peroxide concentration during growth of P. ananatis Sd-1 on glucose (Glu) and rice straw (RS) substrates (c). The values represent the means of the three replicates with the standard deviation (SD). Asterisks represent significant differences from the glucose cultures (statistical significance: *P < 0.05, **P < 0.01, ***P < 0.001)