Table 1.

Characteristics that differentiate Arcobacter anaerophilus IR-1 from other strains within the genus Arcobacter.

Characteristics	1	2	3	4	5	6	7	8	9	10	11
Growth in/on
Air at 37°C	-	-	-	+	+	+	ND	ND	+	ND	+
CO2 at 37°C∗	+	-	-	+	+	+	+	+	+	+	+
CO2 at 42°C∗	-	-	-	-	-	(+)a	+	-	(+)a	-	(+)a
0.5% (w/v) NaCl	+	+	+	-	-	+	+	+	+	+	ND
4% (w/v) NaCl	+	+	+	+	+	+	+b	-	-	-b	+
1% (w/v) glycine	-	+	-	+	-	ND	+	-	-	-	-
Hemolysis	-	-	-	-	-	-	V	+	-	-	-
Enzyme activity
Oxidase	+	+	+	+	+	+	+	+	+	+	+
Catalase	-	-	+	-	-	(+)	(+)	+	(+)	+	+
Urease	+	-	+	-	-	-	-	-	+	-	-
Nitrate reduction	+	+	+	+	+	-	+	+	+	-	+
Indoxyl acetate hydrolysis	-	+	+	+	+	-	+	+	+	+	-

1, Arcobacter anaerophilus IR-1 (This study); 2, A. anaerophilus JC83 DSM-24636^T (Sasi Jyothsna et al., 2013); 3, A. nitrofigilis DSM-7299^T (McClung and Patriquin, 1980; Sasi Jyothsna et al., 2013); 4, A. marinus DSM-24769^T (Kim et al., 2010; Sasi Jyothsna et al., 2013); 5, A. halophilus DSM-18005^T (Donachie et al., 2005); 6, A. mytilii DSM-23625^T (Collado et al., 2009); 7, A. butzleri DSM-8739^T (Vandamme et al., 1992); 8, A. skirrowii DSM-7302^T (Vandamme et al., 1992); 9, A. defluvii DSM-25359^T (Collado et al., 2011); 10, A. cryaerophilus DSM-7289^T (Vandamme et al., 1992); 11, A. molluscorum (Figueras et al., 2011a).

+, positive; –, negative; (+), weakly positive; V, variable among strains; ND, not determined.

^∗Growth at microaerophilic conditions.

^aAt aerobic atmosphere.

^bAt 3.5% (w/v) NaCl.