Official DSMZ medium: This medium was manually curated by experts from the DSMZ.
* Modification: Omit vitamins and adjust pH of complete medium to 7.3 - 7.6.
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
NaCl | 25.00 | g | 24.876 | 425.661 | |
(NH4)2SO4 | 1.00 | g | 0.995 | 7.53 | |
MgSO4 x 7 H2O | 1.50 | g | 1.493 | 6.056 | |
CaCl2 x 2 H2O | 0.42 | g | 0.418 | 2.843 | |
Trace element solution (Vishniac & Santer, 1957) | 0.20 | ml | - | - | |
Bromothymol blue
(0.1% w/v) |
4.00 | ml | 0.004 | 0.006 | |
K2HPO4 | 0.50 | g | 0.498 | 2.856 | |
Na2S2O3 x 5 H2O | 5.00 | g | 4.975 | 20.046 | |
Seven vitamins solution* | 1.00 | ml | - | - | |
Distilled water | 1000.00 | ml | - | - | |
1 Dissolve ingredients (except hydrogenphosphate, thiosulfate and vitamins), adjust pH to 7.2 and autoclave. K2HPO4 and Na2S2O3 are autoclaved separately each in 10% of the final volume. Filter sterilize the vitamins solution. Adjust pH of the complete medium to 7.2 with sterile 0.4% (w/v) Na2CO3 solution. Acidification of the medium during growth causes the pH indicator bromothymol blue to turn from blue to yellow. | |||||
2 Note: Growth of most Thiomicrospira strains is more reliable if the medium is prepared under a 80% N2 and 20% CO2 gas atmosphere to make it anoxic and then filled under air atmosphere into Hungate-type tubes (5 ml per vial). The pH is adjusted with a sterile stock solution of Na2CO3 (5% w/v) after autoclaving. |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
Na2-EDTA | 50.00 | g | 50 | 148.718 | |
ZnSO4 x 7 H2O | 22.00 | g | 22 | 76.506 | |
CaCl2 x 2 H2O | 5.54 | g | 5.54 | 37.683 | |
MnCl2 x 4 H2O | 5.06 | g | 5.06 | 25.568 | |
FeSO4 x 7 H2O | 5.00 | g | 5 | 17.985 | |
(NH4)6Mo7O24 x 4 H2O | 1.10 | g | 1.1 | 0.89 | |
CuSO4 x 5 H2O | 1.57 | g | 1.57 | 6.288 | |
CoCl2 x 6 H2O | 1.61 | g | 1.61 | 12.4 | |
Distilled water | 1000.00 | ml | - | - | |
1 Dissolve EDTA in distilled water, adjust pH to 7 using 2 N KOH, then add remaining compounds. Adjust pH of final solution to 6.0 with KOH. |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
---|---|---|---|---|
Vitamin B12 | 100 | mg | 0.1 | 0.074 |
p-Aminobenzoic acid | 80 | mg | 0.08 | 0.583 |
D-(+)-biotin | 20 | mg | 0.02 | 0.082 |
Nicotinic acid | 200 | mg | 0.2 | 1.625 |
Calcium pantothenate | 100 | mg | 0.1 | 0.21 |
Pyridoxine hydrochloride | 300 | mg | 0.3 | 1.459 |
Thiamine-HCl x 2 H2O | 200 | mg | 0.2 | 0.536 |
Distilled water | 1000 | ml | - | - |
Last modified: | 05.09.22 |
Source: | DSMZ |
Taxonomic range: | Bacteria |
Medium type: | Defined medium |
Final pH: | * 7.3 - 7.6 |
Equipment needed: | Autoclave, Filter, Gassing station, Hungate tubes |
Edit in Medium builder |
Detailed instructions for the cultivation of anaerobes including important warnings can be found in the cultivation instructions .
Compound | Conc. [g/L] | Conc. [mM] |
---|---|---|
NaCl | 24.876 | 425.661 |
Na2S2O3 x 5 H2O | 4.975 | 20.046 |
MgSO4 x 7 H2O | 1.493 | 6.056 |
(NH4)2SO4 | 0.995 | 7.53 |
K2HPO4 | 0.498 | 2.856 |
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