TABLE 1.
Component or characteristic |
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---|---|---|---|---|---|---|---|---|---|---|---|
Anaerobic conditions (condition no.) |
Aerobic conditions (condition no.) |
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Parameter | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 | 2 | 3 |
Electron acceptor | Nitrate | Nitrate | Nitrate | Nitrate | Nitrate | Nitrate | Nitrate | Othersb | Molecular oxygen | Molecular oxygen | Molecular oxygen |
Electron donor | Iron(0) | Iron(II) | l-Cysteine | Iron(0) | Iron(II) | l-Cysteine | Othersc | l-Cysteine | l-Cysteine | l-Cysteine | Othersc |
Carbon source | Pyruvate | Pyruvate | Pyruvate | None | None | None | Pyruvate | Pyruvate | Pyruvate | None | Pyruvate |
Growthd | + | + | + | − | − | − | − | − | + | − | − |
The medium composition and detailed growth conditions are described in Materials and Methods.
Ten millimolar sulfate, 2 mM sulfite, 5 mM thiosulfate, 1% (wt/vol) elemental sulfur, 2 mM nitrite, 2 mM ferric oxide, 2 mM ferric chloride, 10 mM fumarate, and none.
H2-CO2 (4:1 [vol/vol], N2-CO2-H2 (79:20:1 [vol/vol/vol]; 75:20:5 [vol/vol/vol]; 70:20:10 [vol/vol/vol]), 2 mM sulfide, 1% (wt/vol) elemental sulfur, 5 mM thiosulfate, 2 mM sulfite, 10 mM ammonium, 2 mM nitrite, and none.
+, growth; −, no growth.