Extended Data Fig. 6: Gas chromatography studies of one ex situ trace gas consumption experiment.
From: Trace gas oxidizers are widespread and active members of soil microbial communities
Shown are four biological replicates collected at depths of 0-5, 5-10, 15-20, and 25-30 cm across four Australian ecosystems (n = 64). Depicted are the oxidation rates recorded over time of (a) atmospheric H2, (b) atmospheric CO, and (c) atmospheric CH4 by soils at each depth compared to heat-killed control soils. Oxidation of the three gases was also measured in the dryland soils following hydration, that is Dryland (wet) samples. Points show average values and vertical lines the error bars representing one standard deviations of four biological replicates. Significance testing of differences in ex situ oxidation rates between ecosystem type and soil depth was carried out using a one-sided Kruskall Wallis H test followed by a pairwise Wilcoxon tests with adjusted p-values using a Benjamini Hochberg correction for multiple testing. Boxplots show median, lower and upper quartile, and minimum and maximum values comparing the ex situ rates of H2, CO, and CH4 oxidation between depths and ecosystems for (d) cell-specific rates and (e) bulk reaction rates per gram of dry soil.
