Table 5.

Results of the MR-VP assay and pH values for supernatants of cultures grown overnight in R mediuma

StrainPopulationSweep status of strainMR resultVP resultpH
WN624Ancestor+7.0
WN628Ancestor+7.0
WN715 (LCM)624APresweep+7.0
WN716 (SCV)624APostsweep+4.5
WN717 (LCM)624BPresweep+7.0
WN718 (SCV)624BPostsweep+6.0
WN699 (LCM)624EPresweep+7.0
WN700 (SCV)624EPostsweep+4.5
  • a MR, methyl red assay for acid; V-P, Voges-Proskauer assay for acetoin.