Fig. 2: Impact of the partial pressures of CO2 and N2, and of the total pressure, on the growth rates of Anabaena sp. | npj Microgravity

Fig. 2: Impact of the partial pressures of CO2 and N2, and of the total pressure, on the growth rates of Anabaena sp.

From: Dependence of cyanobacterium growth and Mars-specific photobioreactor mass on total pressure, pN2 and pCO2

Fig. 2

An equilibrium is assumed between the atmosphere and the culture medium. Left: Specific growth rate (SGR) as a function of pN2 under 10 hPa of pCO2 (top), or as a function of pCO2 under 800 hPa of pN2 (bottom). Dots correspond to experimental data (six biological replicates per condition); lines represent equations, analogous to Monod’s, whose parameter values are indicated. Top right: SGR as a function of total pressure, in an Ar atmosphere (carbon and nitrogen sources were provided in the culture medium). Horizontal lines show average values for six biological replicates (dots); differences are not significant (two-way ANOVA, p > 0.05). Bottom right: Heatmap showing SGR as a function of pCO2 and pN2.

Back to article page