Figure 5 | Scientific Reports

Figure 5

From: Addition of anaerobic electron acceptors to solid media did not enhance growth of 125 spacecraft bacteria under simulated low-pressure Martian conditions

Figure 5

Effects of the different anaerobic electron acceptors on the growth of Trichococcus pasteurii on TSA, TSA + vitamins, TSA + nitrate, TSA + sulfate, and TSA + Fe3+ at pH 7 under low-PTA conditions. Samples were taken at different incubation times up to 28 days. Cells were applied to the agar plates as multiple, 2.5-µL drops (~ 2.5 × 105 cells/drop), squares of agar/cells were cut out, and subsequent MPN assays completed to estimate the numbers of viable cells over time. The data are reported as log10 (N/N0) in which N0 = viable cell numbers at T = 0 and N = viable cell numbers at a specific point between 3 and 28 days (n = 6; error bars are standard deviations).

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