Potential for hydrogen-oxidizing chemolithoautotrophic and diazotrophic populations to initiate biofilm formation in oligotrophic, deep terrestrial subsurface waters

Table 3 Summary of the metabolic pathways for the reconstructed genomes. The table provides gene homologs for chemotaxis, motility, and EPS production and secretion for biofilm formation

Group	MAGs	Biofilm formation	Metabolic pathways and energy conservation	Nutrient fixation	% mapped reads^a
Modern marine water
A	MMR_Bin_58	EPS production, secretion and motility	H₂ oxidation, sulfate and nitrate reduction and Rnf	CO₂	0.13
B	MMR_Bins_36, 41 and 98/MMG_Bins_22, 48 and 93	EPS production and secretion	(Fermentation)^b, (formate and H₂ oxidation), (Sulfur reduction), (nitrate reduction), (denitrification) and (Rnf)	(N₂)	1.18 13.36
C	MMG_Bin_17	Motility	Formate and H₂ oxidation, sulfate/sulfur reduction and Rnf	CO₂ and N₂	3.10
Old saline water
A	OSR_Bin_1	EPS production, secretion and motility	Formate oxidation, Sulfate sulfur reduction	CO₂ and N₂	0.22
B	OSR_Bin_39/ OSG_Bin_9	EPS production and secretion	Fermentation, H₂ oxidation, Rnf	None	0.65 0.34
C	OSR_Bin_45/ OSG_Bins_16, 23 and 24	Motility	(Formate oxidation)	(CO₂) and (N₂)	1.71 2.82

^aTotal percentage of mapped reads of all bins within the group
^bBrackets designates that not all populations in the group contain genes suggested for the trait

ISSN: 2049-2618