Table 1.

Differential phenotypic features between strain KD21^T and closest related species.

Characteristic	1	2*	3*	4*	5*	6*	7*	8*
Nitrate reduction	+	-	-	-	-	-	-	-
Gelatin digestion	-	-	-	+	-	+	-	-
Aesculin hydrolysis	+	+	+	+	+	-	v	+
Acid production from (API 20A)
Glucose	+	+	-	+	+	+	-	+
Lactose	+	+	-	−	-	-	-	-
Mannose	+	+	+	+	+	+	-	+
Raffinose	-	-	-	-	-	-	-	+
Rhamnose	+	+	-	-	-	-	-	-
Sucrose	-	+	-	+	+	-	-	na
Salicin	+	+	-	+	-	-	-	+
Cellobiose	+	+	-	-	-	-	-	+
Trehalose	-	-	-	+	-	-	-	-
Enzyme activity (Rapid ID 32A)
Arginine dihydrolase	-	-	-	+	+	-	-	+
Arginine arylamidase	-	+	-	+	+	+	+	+
α-Galactosidase	w	-	-	-	-	-	-	+
β-Galactosidase	-	+	-	-	-	-	-	-
Enzyme activity (API ZYM)
Alkaline phosphatase	+	+	+	-	-	-	w	+
Esterase (C4)	-	-	-	-	-	-	+	-
Esterase lipase (C8)	+	+	-	-	-	-	+	-
α -Glucosidase	-	+	-	-	-	-	-	+
β-Glucosidase	+	+	+	+	-	-	-	+
Naphthol-AS-BI-phosphohydrolase	+	-	+	-	+	+	+	+

1. T. montrealensis KD21^T; 2. T. scatoligenes SK9K4^T (Li et al. 2015); 3. Paratractidigestivibacter faecalis KCTC 15699^T (Han et al. 2019); 4. O. uli DSM 7084^T (Olsen et al. 1991, Dewhirst et al. 2001); 5. O. phocaeensis Marseille-P2936^T (Zgheib et al. 2021); 6. P. catena JCM 31932^T (Sakamoto et al. 2018); 7. P. massiliensis JCM 33000^T (Sakamoto et al. 2019); and 8. Thermophilibacter provencensis Marseille-P2912^T (Zgheib et al. 2021).

+, Positive; -, negative; na, no available data; v, variable; and w, weakly. *Data were obtained from the original descriptions of species.