Table 1.

Facultative methanotrophs

Taxon	Strain	Family	Environment	Location	Multi-C substrates	pH optimum	Ref.
Methylocystis bryophila	H2s	Methylocystaceae	Sphagnum peat	Germany	Acetate	6.0–6.5	[39]
Methylocystis bryophila	S284	Methylocystaceae	Sphagnum peat bog	European N. Russia	Acetate	6.0–6.5	[35]
Methylocystis echinoides	IMET 10491	Methylocystaceae	Sewage sludge	Germany	Acetate	nr	[180]
Methylocystis heyeri	H2	Methylocystaceae	Sphagnum peat	Germany	Acetate	5.8–6.2	[181]
Methylocystis hirsuta	CSC1	Methylocystaceae	Uncontaminated aquifer	CA, USA	Acetate	7.0	[182]
Methylocystis sp. SB2	SB2	Methylocystaceae	Spring bog	MI, USA	Acetate, ethanol	6.8	[37]
Methylocapsa aurea	KYG	Beijerinckiaceae	Forest soil	Germany	Acetate	6.0–6.2	[36]
Methylocella silvestris	BL2	Beijerinckiaceae	Forest soil	Germany	Organic acids, alcohols, ethane, propane	5.5	[43]
Methylocella palustris	K	Beijerinckiaceae	Sphagnum peat bog	W.Siberia	Organic acids, alcohols	5.5	[42]
Methylocella tundrae	T4	Beijerinckiaceae	Sphagnum peat	N.Russia	Organic acids, alcohols	5.5–6.0	[41]
Methylocella silvestris	TVC	Beijerinckiaceae	Tundra soil	N.Canada	Organic acids, ethanol, propane	5.8	[47]
Methylocella tundrae	PC1	Beijerinckiaceae	Stream water and sediment	NY, USA	Organic acids, alcohols, ethane, propane	5.8	[45]
Methylocella tundrae	PC4	Beijerinckiaceae	Stream water and sediment	NY, USA	Organic acids, alcohols, ethane, propane	5.8	[45]
Methyloceanibacter methanicus	R-67174	Rhizobiales incertae sedis	Marine sediment	North Sea	Acetate	7.3	[49]

nr, not reported.