Fig. 3

Distribution of the recovered MAGs in hadal sediments and other natural ecosystems. (A) The sampling sites of the datasets included in the analysis; (B) the relative abundance of the closest matched OTUs in 16S rRNA and 16S rRNA gene libraries of sediments of the Challenger Deep. The MAGs without any value in 16S rRNA or 16S rRNA gene libraries mean no matched OTUs due to a lack of 16S rRNA gene in the corresponding MAG; (C) the reads recruitment of the recovered MAGs in metagenomes from different layers of hadal sediments of the Challenger Deep; and (D) reads recruitments in other natural ecosystems. The names of samples from sediments were shown as “sampling site (region)_water depth of the site_depth below seafloor.” The black dots in the heatmap boxes indicate outlier values. Red-colored names at the bottom indicate the MAGs with completeness > 80%