“…Species in the genus Pseudoalteromonas, typically associated with eukaryotic hosts (Holmström & Kjelleberg, 1999), are frequently isolated from marine animals such as sponges (Ivanova et al, 2002b), tunicates (Holmström et al, 1998) and mussels (Ivanova et al, 1996(Ivanova et al, , 1998 and also from marine algae such as Ulva lactuca (Egan et al, 2001) and Laminaria japonica (Sawabe et al, 1998). Several species in the genus, such as Pseudoalteromonas luteoviolacea (Gauthier, 1982;Novick & Tyler, 1985), Pseudoalteromonas rubra (Gauthier, 1976), Pseudoalteromonas citrae (Gauthier, 1977), Pseudoalteromonas aurantia (Gauthier & Breittmayer, 1979) and Pseudoalteromonas peptidolytica (Venkateswaran & Dohmoto, 2000), were isolated from sea water. Members of Pseudoalteromonas are also known to be producers of bioactive substances (Holmström & Kjelleberg, 1999).…”