Marine Picoplankton Metagenomes from Eleven Vertical Profiles Obtained by the Malaspina Expedition in the Tropical and Subtropical Oceans

Abstract

ABSTRACTThe Ocean microbiome has a crucial role on Earth’s biogeochemical cycles, but also represents a tremendous potential for biological applications as part of the bluebiotechnology. During the last decade, global cruises such asTaraOceans or the Malaspina Expedition have expanded our knowledge on the diversity and genetic repertoire of marine microbes. Nevertheless, there is still a gap of knowledge on broad scale patterns between photic and bathypelagic dark ocean microbes derived from the lack of detailed vertical profiles covering contrasting oceans depth regions. Here we present a dataset of 76 microbial metagenomes of the picoplankton size fraction (0.2-3.0 μm) collected in 11 stations along the Malaspina Expedition circumnavigation that cover vertical profiles sampling at 7 depths, from the surface to the 4000 m deep (or the sea floor in shallower waters). This Malaspina Microbial Vertical Profiles metagenomes (MProfile) dataset produced 1.66 Tbp of raw DNA sequences that assembled into a total 25.3 Gbp. After gene prediction and annotation, we built a 46.3 million non-redundant gene compendium with their corresponding annotations (M-GeneDB-VP), clustered at 95% sequence similarity. This dataset will be a valuable resource for exploring the functional and taxonomic connectivity between the photic and bathypelagic tropical and subtropical ocean at a global scale, while increasing our general knowledge on the Ocean microbiome.