Fig. 4: Maximum likelihood phylogenetic tree of RuBisCO gene sequences focusing on form IE, pruned from a larger tree containing binned cold desert metagenomic assembled genomes (MAGs) and over 3000 published genomes. | The ISME Journal

Fig. 4: Maximum likelihood phylogenetic tree of RuBisCO gene sequences focusing on form IE, pruned from a larger tree containing binned cold desert metagenomic assembled genomes (MAGs) and over 3000 published genomes.

From: Atmospheric chemosynthesis is phylogenetically and geographically widespread and contributes significantly to carbon fixation throughout cold deserts

Fig. 4

Leaves are colored to represent phylum, while colored branches show RuBisCO form. The cold desert-site that each MAG was obtained from is shown in the outer ring. Genomes which additionally harbored high-affinity groups 1h [NiFe]-hydrogenase (hhyL), 1m [NiFe]-hydrogenase (hhmL), 1l [NiFe]-hydrogenase (hylL) and/or aerobic carbon monoxide dehydrogenase (coxL) with an active-site loop are indicated by outer triangles, colored red, green, pink, and blue, respectively. Bootstrap values >90% are depicted as filled circles on branches. Medium and high-quality MAGS constructed in this study are marked with gray circles. RuBisCO form IE is highly diverse, spanning 8 bacterial phyla (Actinobacteriota, Chloroflexota, Firmicutes, Verrucomicrobiota, Ca. Dormibacterota, Ca. Eremiobacterota, Acidobacteriota and Deinococcota) with multiple distinct clades observed. Most genomes containing RuBisCO form IE also contained high-affinity group 1 [NiFe]-hydrogenase and/or aerobic carbon monoxide dehydrogenase.

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