Table 2.

Nutritional categories of Archaea and Bacteria.

	Auto-trophic				Hetero-trophic
Carbon source	CO2				Organic
Energy for Δp+	Photo-trophic		Chemo-trophic		Photo-trophic		Trophicchemo-		Example Archaea	Example Bacteria	Reference
Source of e−	litho-trophic	organo-trophic	litho-trophic	organo-trophic	litho-trophic	organo-trophic	litho-trophic	organo-trophic
STRICTOTROPHS
Photolitho-autotroph	X								–	Chlorothrix (likely mixotrophic)	White (2000)
Photoorgano-autotroph		X							–	–
Chemolitho-autotroph			X						Methanobacteria	Nitrobacter	White (2000)
Chemorgano-autotroph				X					–	–
Photolitho-heterotroph					X				–	Allochromatium warmingii (likely mixotrophic)	Bergey’s manual of bacteriology
Photoorgano-heterotroph						X			–	Heliobacteria	White (2000)
Chemolitho-heterotroph							X		–	Silicibacter pomeroyi	Moran et al. (2004)
Chemorgano-heterotroph								X	Pyrococcus	Lactobacillus acidophilus
MIXOTROPHS
	X				X					Allochromatium renukae	Kumar et al. (2008)
			X					X	Thermoproteus tenax	Ologitropha carboxidovorans, Bradyrhizobium	Paul et al. (2008), Bergey’s manual of bacteriology, Siebers et al. (1997)
			X				X		Thermoproteus neutrophilus		Schäfer et al. (1986)
						X		X	Halobacteria		White (2000)
	X					X				Allochromatium vinosum	Prange et al. (2004)
	X							X		Erythrobacter	Koblízek et al. (2003), Bockstahler and Coats (1993)
	X					X		X		Rhodospirillum rubrum	Bergey’s manual of bacteriology
	X				X	X				Allochromatium phaeobacterium	Srinivas et al. (2009)
	X				X			X		Chloroflexus	White (2000)
	X		X			X		X		Rhodobacter

The header of this table breaks down the known nutritional categories by the source of carbon and energy. We searched the literature for example Archaea and Bacteria in every strictotrophic category, and as many mixotrophic categories as possible.