DSMZ 498 . PSEUDOTHERMOTOGA MEDIUM

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Equipment needed: Autoclave Gassing station Hungate tubes

Final gas composition: 100 % N2 read more

Final pH: 7.0 - 7.2

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ml
Compound Amount Unit
Yeast extract
(BD Bacto)
0.50 g
Modified Wolin's mineral solution 15.00 ml
NaCl 3.46 g
Na2-EDTA 0.77 g
MgSO4 x 7 H2O 0.88 g
MgCl2 x 6 H2O 0.69 g
CaCl2 x 2 H2O 0.14 g
KCl 0.08 g
NaBr 12.50 mg
H3BO3
(0.1% w/v)
4.00 ml
(NH4)2Ni(SO4)2
(0.1% w/v)
3.00 ml
SrCl2 x 6 H2O
(0.1% w/v)
1.90 ml
KI
(0.01% w/v)
0.10 ml
Sodium resazurin
(0.1% w/v)
0.50 ml
KH2PO4 0.50 g
Starch
(soluble)
5.00 g
Na2S x 9 H2O 0.50 g
Distilled water 1000.00 ml
1 Dissolve ingredients (except hydrogenphosphate, starch and sulfide) and adjust pH to 7.0. Sparge medium with 100% N2 gas for 30 - 45 min to make it anoxic, dispense under same gas atmosphere into anoxic Hungate-type tubes or serum vials to 30% volume and autoclave. Add hydrogenphosphate, starch and sulfide from sterile anoxic stock solutions prepared under 100% N2 gas. Check pH of the complete medium and adjust to 7.0 - 7.2, if necessary.

Modified Wolin's mineral solution #

1000
Compound Amount Unit
Nitrilotriacetic acid 1.50 g
MgSO4 x 7 H2O 3.00 g
MnSO4 x H2O 0.50 g
NaCl 1.00 g
FeSO4 x 7 H2O 0.10 g
CoSO4 x 7 H2O 0.18 g
CaCl2 x 2 H2O 0.10 g
ZnSO4 x 7 H2O 0.18 g
CuSO4 x 5 H2O 0.01 g
AlK(SO4)2 x 12 H2O 0.02 g
H3BO3 0.01 g
Na2MoO4 x 2 H2O 0.01 g
NiCl2 x 6 H2O 0.03 g
Na2SeO3 x 5 H2O 0.30 mg
Na2WO4 x 2 H2O 0.40 mg
Distilled water 1000.00 ml
1 First dissolve nitrilotriacetic acid and adjust pH to 6.5 with KOH, then add minerals. Adjust final to pH 7.0 with KOH.