Table 1.

Traits characterizing strains 33A1-SZDP^T, SP-Ram-0.45-NSY-1^T and MWH-Nonnen-W8red^T

Strains: 1, 33A1-SZDP^T; 2, SP-Ram-0.45-NSY-1^T; 3, Silvanigrella aquatica MWH-Nonnen-W8red^T. As regards the assimilation patterns, only results which were at least for one strain positive are shown, for the rest of the substrates of the GEN III MicroPlates (Biolog) all three strains were negative (see species description). +, Positive; −, negative; w, weak.

Characteristic	1	2	3
Cell morphology	Pleomorphic	Pleomorphic	Pleomorphic
Pigmentation, liquid media	Purple, grey, bright orange	Grey-red	Red
Pigmentation, agar plates	Purple	Red	Red
Motility on soft agar	+	+	+
Temperature range of growth (°C)	6–34 (w)	6–36 (w)	10–32 (w)
NaCl tolerance (%, v/w)	1.0–1.2 (w)	1.0–1.1 (w)	0–1.0 (w)
Anaerobic growth:
NSY medium	−/w/+*	−/−*	−/−*
NSY medium with nitrate	−/−/+*	−/w*	−/w*
Assimilation of:
Glucuronamide	−	+	+
Pectin	−	−	+
l-Histidine	+	+	+
Dextrin	−	−	+
α-d-Glucose	−	w	+
Tween 40	+	+	+
Mucic acid	−	−	+
Propionic acid	−	−	w
Formic acid	−	−	w
d-Glucose-6-PO4	w	+	w
Acetic acid	−	−	w
d-Glucuronic acid	−	−	w
Gelatin	−	−	w
α-Keto-glutaric acid	−	+	w
d-Galacturonic acid	−	−	w
Acetoacetic acid	−	w	w
Quinic acid	−	−	w
d-Lactic acid methyl ester	+	−	w
α-Keto-butyric acid	−	−	w
d-Galactose	−	w	w
d-Mannose	−	−	w
l-Glutamic acid	−	+	w
l-Alanine	−	−	w
Lactose	−	−	w
d-Gluconic acid	w	−	−
ß-Hydroxy-d,l-butyric acid	w	−	−
l-Malic acid	+	−	−
l-Arginine	w	−	−
Glycerol	w	−	−
d-Fructose	−	w	−
Melibiose	w	−	−
d-Fucose	−	+	−

*Results from different experiments.