Genetic Characterization of Streptococcus iniae in Diseased Farmed Rainbow Trout (Onchorhynchus mykiss) in Iran

Table 3

Phenotypic features of Lactococcus garvieae and Streptococcus iniae recovered from diseased rainbow trout in 6 states of Iran. Characters showing in parentheses are the published data [2, 5]. V = variable results; + = positive; − = negative; ? = Not defined.

Feature	Lactococcus Garvieae	Streptococcus iniae
Gram stain	+ (+)	+ (+)
Morphology	Cocci (cocci)	Cocci (cocci)
Hemolysis	α/β (α/β)	α/β (α/β)
Catalase	− (−)	− (−)
Oxidase	− (−)	− (−)
Motility	− (−)	− (−)
O/F	+/+ (+/+)	− (F)
Citrate	+ (−)	− (?)
NO3	+/− (−)	− (?)
Indole	− (?)	− (−)
MR/VP	+/− (+/−)	+/− (+/−)
Glucose	+ (+)	+ (+)
Lactose	+/− (+)	− (−)
Maltose	+ (+)	V (?)
Mannitol	(V)	+ (+)
Sucrose	V (?)	+ (+)
Inositol	− (−)	− (−)
Arabinose	− (−)	− (−)
Xylose	− (−)	− (−)
Lysine	− (−)	− (−)
Ornithine	− (−)	+ (?)
Arginine	+ (+)	+ (+)
Esculin	+ (+)	+ (+)
Urea	− (?)	− (?)
Gelatin	+ (?)	− (−)
H2S	−(−)	−(−)