Trichodesmium metaproteomes reflect the differential influence of resource availability across ocean regions.

ABSTRACT: The diazotroph Trichodesmium is an important contributor to marine dinitrogen fixation, supplying nitrogen to phytoplankton in typically nitrogen-limited ocean regions. Identifying how iron and phosphorus influence Trichodesmium activity and biogeography is an ongoing area of study, where predicting patterns of resource stress is complicated by the uncertain bioavailability of organically complexed iron and phosphorus. Here, a comparison of 26 metaproteomes from picked Trichodesmium colonies identified significantly different patterns between three ocean regions: the western tropical South Pacific, the western North Atlantic, and the North Pacific Subtropical Gyre. Trichodesmium KEGG submodule signals differed significantly across regions, and vector fitting showed that dissolved iron, dis

SUBMITTER: Anderson HS 

PROVIDER: S-EPMC12206446 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature