TABLE 1.

Bacterial isolates used in the experiments, their closest relatives,their phylogenetic affiliations (group), and the percentages of similarity to the closest relative^a

Strain	Closest relative	Group	% Similarity
MS1	Pseudoalteromonas sp. strain S9	γ	93.9
MS2	Chromohalobacter marismortui	γ	95.6
MS3	Pseudoalteromonas carrageenovora	γ	99
W5-2	Vibrio fluvialis	γ	100
W5-3	Vibrio mytili	γ	98
W5-4	Vibrio sp. strain NAP-4	γ	98
S3	Vibrio shiloi	γ	98
S1	Uncultured marine eubacterium Vibrio sp. strain HstpLK41	γ	98
S8	Shewanella gelidimarina	γ	98
W5-5	Uncultured Micrococcus clone MT2	gram+	98
MS20	Planococcus citreus	gram+	96

^aMS, strains isolated from marine snow; S, strains isolated from the superficial layer of the sediment; W, strains isolated form the water column. All strains were isolated from the northern Adriatic Sea. The phylogenetic affiliation is based on the comparison of 409 to 439 nucleotides. gram+, gram positive.