Fig. 3: M. jannaschii growth and gene expression in the sedimentary iron-sulfide chemical gardens compared to controls.
From: Simulated early Earth geochemistry fuels a hydrogen-dependent primordial metabolism
a, Comparison of M. jannaschii growth in three experimental settings: sedimentary iron-sulfide chemical gardens (experiment 4a, Supplementary Table 1), MMC growth medium (experiment 4c) and sterile water (experiment 4b). All experiments were performed at 80 °C, error bars indicate standard error of the means across three biological replicates. b, Principal-component (PC) analysis shows the significant difference of M. jannaschii gene expression in non-identical treatments (experiment 5) (analysis of similarity P = 0.001). Grey circles highlight transcriptomes from 25 and 80 °C experiments, respectively. Coloured symbols correspond to the same three experimental conditions that are displayed in a (yellow diamonds, MMC media control; orange triangles, iron-sulfide chemical garden; blue squares, sterile water negative control).
