. 2016 Aug 30;4:e2332. doi: 10.7717/peerj.2332

Table 3. Detection of N-acyl-homoserine lactones by five different AHL-dependent biosensor strains.

	AHL receptor^a
	AhyR^b	LuxR^b	TraR^b	LasR^b	CviR^c
Novosphingobium subterraneum DSM 12447	−	+ +	+ + +	−	+

Notes.

AhyR, AHL receptor from Aeromonas hydrophilia; LuxR, Vibrio fisheri; TraR, Agrobacterium tumefaciens; LasR, Pseudomonas aeruginosa; CviR, Chromobacterium violaceum.

Scores for bioluminescence-based biosensor detection of AHL in strain extracts: −, <2-fold higher than background levels of relative light units (RLU) bioluminescence; + > 2-fold higher than background RLUs; + + > 50 to 75-fold higher than background RLUs; + + + > 75-fold higher than background RLUs.

Violacein pigment (purple) production in T-streak bioassays on PDA/TYE (1:1) agar media: +, visible pigment production; −, no pigment production.