TABLE 2.

Molecular characterization of sulfur-oxidizing enrichments

Dive/enrichmentTemp (°C)Electron acceptorDominant DGGE bandaNo. of other bandsrTCA genesCalvin cycle genes cbbL/ cbbM
3833/Sub2b42O210+−/−
3833/Sub242NO311+Weak +/−
3836/Sub142O214+−/−
3837/Sub142 or 55O215+−/−
3838bRTcO214+Weak +/−
383842O224+−/−
  • a All sequenced dominant band(s) grouped with members of the epsilon subdivision of Proteobacteria. DGGE, denaturing gradient gel electrophoresis.

  • b rTCA and cbbL gene fragments (Fig. 2 and 3) and dominant 16S rRNA genes sequenced (corresponding to bp 1 to 519 of E. coli 16S rRNA genes.

  • c RT, room temperature.