The exchange of metabolites mediates algal and bacterial interactions that maintain ecosystem function. Yet, while thousands of metabolites are produced, only a few molecules have been identified in these associations. Using the ubiquitous microalgae Pseudo‐nitzschia sp., as a model, we employed an untargeted metabolomics strategy to assign structural characteristics to the metabolites that distinguished specific diatom‐microb...

Summary We report on a genomic and functional analysis of a novel marine siphovirus, the Vibrio phage SIO‐2. This phage is lytic for related Vibrio species of great ecological interest including the broadly antagonistic bacterium Vibrio sp. SWAT3 as well as notable members of the Harveyi clade ( V. harveyi ATTC BAA‐1116 and V. campbellii ATCC 25920). Vibrio phage SIO‐2 has a circularly permuted genome of 80 598 bp, which displ...