Figure 3.
Distribution of f327 or f327-like phages in the Arctic sea ice Pseudoalteromonas population. (a) Location of the sampling sites in the Arctic sea ice of the Canada Basin where the 53 Pseudoalteromonas strains were isolated. The sites where f327 or f327-like phages were detected are indicated by black triangles. (b) Agarose gel electrophoresis analysis of the PCR product of 19 phage gene-containing strains. Lanes 1–20 were BSi20327, BSi20335, BSi20381, BSi20465, BSi20401, BSi20514, BSi20407, BSi20357, BSi20436, BSi20670, BSi20366, BSi20340, BSi20455, BSi20447, BSi20462, BSi20451, BSi20464, BSi20341, BSi20437 and BSi20439, respectively. Strain BSi20670 harboring no phage gene was used as the negative control. (c) Phylogenetic tree of Pseudoalteromonas based on the rpoD sequences. The black triangles represent the 18 phage-containing strains, which are BSi20357, BSi20341, BSi20407, BSi20439, BSi20447, BSi20401, BSi20437, BSi20381, BSi20366, BSi20514, BSi20462, BSi20465, BSi20451, BSi20455, BSi20335, BSi20436, BSi20340 and BSi20464. ‘BSi20' was omitted from the identification numbers in the figure.
