Table 1. Characteristics of bacterial derivatives M7.1, M7.2 and M7.3.

Mutant	Gene name	Mutation position	Nucleotide variation	Amino acid position	Amino acid variation
M7.1	qsaR	787	C > A	263	Glu > Stop
M7.2	qsdR	133	C > A	45	Gly > Cys
M7.3	qsaR	692	G > A	231	Ser > Phe