Fig. 5: Presence of key methylotrophic methanogenesis genes and the percent microbial methane (PMM) throughout the sediment column of each site.
From: Well-hidden methanogenesis in deep, organic-rich sediments of Guaymas Basin
A The presence of sequences related to the methylotrophic methanogenesis genes mcrA, mtaB, and mttB at the metagenomically surveyed depths of sites U1545, U1546, and U1547 is specified by circles. Black circles indicate if a given sequence is present and yellow circles indicate if the sequence is phylogenetically related to known methanogen lineages. B The PMM as a function of depth based on mixing model results (see supplementary text for details). The average PMM of each measured sample is represented by black dots, with error bars indicating the full range of possible PMM. The dashed black line is an extrapolation of the patterns seen from the measured samples. The red line is the concentration of methane in mM as a function of depth.
