Table 1. Differential phenotypic characteristics of strains JW1^T, JW3, and closely related members of the genus Pseudoalteromonas.

Strains/species: 1, strain JW1^T; 2, strain JW3; 3, P. byunsanensis JCM 12483^T; 4, P. shioyasakiensis JCM 18891^T; 5, P. arabiensis JCM 17292^T; 6, P. gelatinilytica NH153^T. All data were obtained in this study and under identical conditions, unless indicated otherwise.

Characteristics	1	2	3	4	5	6
Color	violet	violet	violet*	non-pigmented†	non-pigmented‡	non-pigmented§
Violacein production	+	+	+	–	–	–
Growth in NaCl (%):
Range	0.5–10	0.5–10	0.5–5*	0.5–12†	0.5–10‡	0–10§
Optimum	1–3	1–3	1.5–2*	1–3†	2–3‡	3–5§
Growth pH:
Range	6–10.5	6–10.5	5–10*	5.5–9.5†	5.0–10.0‡	5.5–9.5§
Optimum	7.5	7.5	8.0*	6.5–8.0†	7.0–8.0‡	7.5–8.5§
Growth temperature (ºC):
Range	20–40	20–40	10–40*	5–40†	6–35‡	15–45§
Optimum	30	30	25–30*	28–30†	25‡	37§
Arginine dihydrolase	–	–	–	+	+	–
Citrate utilization	–	–	–	+	+	+
Nitrate reduction	–	–	–	–	+	–
Tryptophan deaminase	+	+	+	–	–	–
Urease	–	–	–	–	+	+
Voges–Proskauer	+	+	+	+	–	+
Hydrolysis of:
Starch	+	+	+	–	–	–
Tween-40	+	+	+	–	+	–
Utilization of:
L-Arabinose	–	–	–	+	+	+
Cellobiose	–	+	+	–	+	+
Ethanol	–	–	–	+	+	+
D-Fructose	–	–	–	+	–	+
D-Mannitol	–	–	–	–	–	+
D-Mannose	–	–	–	+	+	+
Sucrose	+	+	–	+	+	+
D-Trehalose	+	+	+	+	–	+
Acid production:
Cellobiose	–	+	+	–	+	–
Ethanol	–	–	–	–	+	–
D-fructose	–	–	–	+	–	–
D-Galactose	–	+	–	–	–	–
D-Glucose	+	+	+	–	–	+
D-Mannitol	–	–	–	–	–	+
D-Mannose	–	–	–	+	+	+
L-Rhamnose	–	+	–	–	–	–
Sucrose	+	+	–	+	+	–
D-Trehalose	+	+	+	+	–	+
Susceptibility to:
Gentamicin (10 μg)	+	+	+	+	–	+
Nitrofurantoin (300 μg)	+	+	+	–	–	–
Streptomycin (10 μg)	+	+	+	+	+	–
Tetracycline (30 μg)	+	+	+	–	–	+
ANI value (%)
With JW1T	100	99.9	83.3	71.0	70.9	70.9
in silico DDH values
With JW1T	100	99.9	26.4	20.0	20.1	20.0

*Data were taken from Park et al. (2005) [8]

^†Data were taken from Matsuyama et al. (2014) [4]

^‡Data were taken from Matsuyama et al. (2013) [5]

^§Data were taken from Yan et al. (2016) [12].