One-quarter of photosynthesis-derived carbon on Earth rapidly cycles through a set of short-
lived seawater metabolites that are generated from the activities of marine phytoplankton …

BACKGROUND Biological dinitrogen (N2) fixation, the reduction of atmospheric N2 to
ammonia, is important for maintaining the fertility of the oceans by providing biologically …

Many microbial producers of coenzyme B12 family cofactors together with their metabolically
interdependent pathways are comprehensively studied and successfully used both in …

The ocean's nitrogen is largely fixed by cyanobacteria, including Trichodesmium, which
forms aggregates comprising hundreds of filaments arranged in organized architectures …

Cobalamin (vitamin B12) is an essential enzyme cofactor for most branches of life. Despite
the potential importance of this cofactor for soil microbial communities, the producers and …

Complex assemblages of microbes in the surface ocean are responsible for approximately
half of global carbon fixation. The persistence of high taxonomic diversity despite …

The filamentous diazotrophic cyanobacterium Trichodesmium is responsible for a significant
fraction of marine di-nitrogen (N2) fixation. Growth and distribution of Trichodesmium and …

N2 fixation is a major component of the global N cycle and has been extensively studied in
open‐ocean and terrestrial ecosystems. Yet rates and ecological dynamics remain virtually …

Filamentous and colony-forming cells within the cyanobacterial genus Trichodesmium might
account for nearly half of nitrogen fixation in the sunlit ocean, a critical mechanism that …

Iron (Fe) bioavailability limits phytoplankton growth in vast ocean regions. Iron-rich dust
uplifted from deserts is transported in the atmosphere and deposited on the ocean surface …