TABLE 2.

Carbon compounds utilized differentially by the S. enterica serovar Thompson parental and LuxS⁻ strains in the Biolog assay and complementation with the luxS clone

Carbon compound	Mutant/parentala	Complemented/parentala
M-inositol	0.22	1.42
Mono-methylsuccinate	0.06	0.72
d-Glucuronic acid	0.19	0.65
p-Hydroxyphenylacetic acid	0.55	0.75
Succinic acid	0.06	0.91
l-Alanine	0.33	0.67
l-Asparagine	0.40	0.90
l-Glutamic acid	0.12	0.48
l-Serine	0.38	0.76
Glycyl-l-aspartic acid	0.53	1.04

^aIn the Biolog assay, the color change resulting from the reduction of tetrazolium violet by bacterial respiration was measured by optical density. For each compound, the data are presented as the proportion of the optical density obtained with the mutant, or complemented mutant, to that obtained with the parental strain. Mutant strain, RM1987NLUX pBBR1MCS-5; parental strain, RM1987N pBBR1MCS-5; complemented strain, RM1987NLUX pBBRLuxST2.