TABLE 1.

Naphthalene-degrading bacterial strains and plasmids used in this study

Strain abbreviationa	Strain identityb	Origin	Naphthalene plasmid	Plasmid size (kb)c	Reference(s)
PpG7	Pseudomonas putida PpG7	Berkeley, Calif.	NAH7	77	12
NCIB9816-4	Pseudomonas putida NCIB 9816-4	Bangor, Wales	pDTG1	81	15, 54
Cg1	Pseudomonas putida Cg1	Glens Falls, N.Y.	pCg1	88	26
Cg2	Pseudomonas fluorescens Cg2	Glens Falls, N.Y.	pCg2	76	26
Cg4	Gram-negative rod Cg4	Glens Falls, N.Y.	pCg4	70	26
Cg5	Pseudomonas fluorescens Cg5	Glens Falls, N.Y.	pCg5	78	26
Cg7	Pseudomonas strain Cg7	Glens Falls, N.Y.	pCg7a and b	78 and 96	26
Cg8	Gram-negative rod Cg8	Glens Falls, N.Y.	pCg8	76	26
Cg9	Pseudomonas fluorescens Cg9	Glens Falls, N.Y.	pCg9	76	26
Cg11	Pseudomonas mendocina Cg11	Glens Falls, N.Y.	pCg11	86	26
Cg12	Pseudomonas strain Cg12	Glens Falls, N.Y.	pCg12	76	26
Cg15	Gram-negative rod Cg15	Glens Falls, N.Y.	pCg15	86	26
Cg16	Pseudomonas strain Cg16	Glens Falls, N.Y.	pCg16	76	26
Cg21	Gram-negative rod Cg21	Glens Falls, N.Y.	pCg21	76	26

^aAbbreviations referring to plasmid-cured strains have the suffix C added. Corresponding strains that are both cured and resistant to rifampin have the suffix CR added. After successful matings, the corresponding transconjugants were assigned a T as suffix. 

^bAll Glens Falls isolates are identified by multiple substrate utilization patterns in the Biolog identification system (26). 

^cDetermined by pulsed-field gel electrophoresis.