TABLE 2.

Metabolic traits of genera detected in the Kam Kotia tailings samples that are known to catalyze the dissimilatory oxidoreduction of iron and/or sulfur

Microorganism	Mean % of total reads in cover system	Mean % of total reads in tailings	pH responsea	Sulfur oxidation	Iron oxidation	Sulfate reduction	Iron reductionb
Acidimicrobiiac	0.44	0.89	EA		+d		+
Ferrithrix	0.07	1.13	EA		+		+
Sulfuriferula	0.65	0.28	MA & N	+
Geobacter	0.44	0.41	N				+
Desulfosporosinus	0.08	0.68	N & MA			+	+
Thiobacillus	0.26	0.20	N	+
Desulfitobacterium	0.02	0.54	N & MA			+	+
Acidithiobacillus	0.05	0.71	EA	+	+		+
Desulfomonile	0.05	0.25	N & MA			+	+
Sulfurifustis	0.14	0.07	N	+
Desulfurivibrio	0.14	0.10	A			+	+
Acidithrix	0.05	0.22	EA & MA		+		+
Alicyclobacillus	0.06	0.44	EA & MA	+	+		+
Desulfobulbaceaec	0.08	0.05	N			+	+
Leptospirillum	0.14	0.06	EA		+
Desulfuromonadalesc	0.04	0.01	N			+	+
Ferrovum	0.02	0.13	EA		+		+
Acidibacter	0.14	0.10	MA				+
Sulfobacillus	0.02	0.20	EA	+	+		+
Acidiferrobacteraceaec	0.05	0.50	EA	+	+		+
Desulfobacca	0.04	0.09	N			+	+
Acidibacillus	0.04	0.19	EA	+	+		+
Acidiphilium	0.04	0.11	EA	+
Desulfovibrio	0.03	0.03	N & MA			+	+
Desulfurispora	0.02	0.08	N			+	+
Gallionellaceaec	0.07	0.03	N & MA		+
Acidimicrobiaceaec	0.01	0.04	EA		+		+
Acidiferrobacterc	0.05	0.16	EA	+	+		+
Sulfuricellaceaec	0.04	<0.01	N	+
Desulfobacteraceaec	0.04	<0.01	N & MA			+	+
Ferroplasma	0.01	0.15	EA		+		+
Desulfobacteralesc	0.01	<0.01	N & MA			+	+
Desulfobulbus	0.02	0.15	N			+	+
Desulforhopalus	0.01	0.03	N			+	+
Desulfocapsa	0.03	<0.01	N			+	+
Sulfurimonas	0.01	0.03	N	+
Desulfovibrionalesc	0.01	0.25	N & MA			+	+
Thiomonas	0.02	0.01	MA	+
Gallionella	0.02	0.01	N		+
Ferribacterium	0.01	0.01	N				+
Sulfuritalea	0.03	<0.01	N	+
Ferrimicrobium	0.01	0.08	EA		+		+
Acidimicrobialesc	<0.01	0.01	EA		+		+
Desulfatiglans	0.01	<0.01	N			+	+
Desulfomicrobium	0.01	0.03	N			+	+
Desulfuromonas	<0.01	0.03	N			+	+
Desulfovirga	0.01	<0.01	N			+	+
Sulfuricella	0.03	0.06	N	+
Sulfurirhabdus	0.01	<0.01	N	+
Sulfurospirillum	<0.01	<0.01	N			(Sulfur)	+
Sulfuricurvum	0.01	<0.01	N	+
Alicyclobacillaceaec	<0.01	<0.01	EA & MA	+	+		+
Acidicaldus	0.01	<0.01	EA	+			+
Ferrovibrio	<0.01	<0.01	N		+
Desulfatirhabdium	0.01	0.01	N			+	+
Desulfobacula	0.01	<0.01	N			+	+
Desulfonema	<0.01	<0.01	N			+	+
Desulfoplanes	<0.01	<0.01	N			+	+
Desulfovibrionaceaec	<0.01	<0.01	N & MA			+	+
Sideroxydans	0.01	<0.01	N	+	+
Ferritrophicum	<0.01	<0.01	N & MA		+
Thiovirga	<0.01	0.01	N	+

^aEA, extremely acidophilic; MA, moderately acidophilic; N, neutrophilic; A, alkaliphilic.

^bBoth direct and indirect.

^cHigher taxa that could not be identified on the genus level.

^dPlus sign indicates at least one species of the genus has been reported to catalyze the dissimilatory reaction referred to.