TABLE 2.

Genes detected by PCR and DNA-DNA hybridization

Gene	Result for virulence plasmida:
	pSTV	pSEV	pSCV	pSDV
parBS	+	+	+	+
incR, parA	+	+	+	+
spvRA	+	+	+	+
spvC	+	+	+	+
rsk	+	+	+	−
repA (RepFIB)	+	+	+	−
pefAC	+	+	+	−/+
pefD, orf5	+	+	−/+	−
rck	+	+	−	+
repA (RepFIIA)	+	+	+	+
traX, finO	+	−	+	+
traT	+	−	+	+
oriT	+	+	−	−
samA	+	+	+	+

^a+, positive reaction; −, negative reaction; −/+, PCR negative and Southern blot positive.