TABLE 1.

Response of V. fischeri to various substrates added to TB-SW or MM-M

SubstrateMedium
TB-SWaMM-Mb
Cyclic AMP++
Cellobiose++ND
Choline
DeoxyriboseND
Fructose+++
Galactose+ND
Glucose++++
Glucosamine
Glycerol+
Maltose+ND
Mannitol
Mannose+++
NAGal
NAG++++
NANA+++
Raffinose+ND
Ribose+ND
Sucrose++ND
  • a For TB-SW, a positive response was noted if an additional concentric ring formed that was subsequently perturbed by spotting the appropriate substrate. ++, dense ring;+ , faint ring; − no ring.

  • b For MM-M, a positive response was noted if addition of a substrate, added at concentrations of 1μ M to 10 mM, allowed the cells to form a ring that migrated beyond the zone of growth formed in the presence of MM-M alone.++ , radius of >10 mm; +, radius of<10 mm; −, no difference. ND, migration to this substrate was not tested under these conditions.