The ocean is home to a diverse and metabolically versatile microbial community that
performs the complex biochemical transformations that drive the nitrogen cycle, including …

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

Persistent nitrogen depletion in sunlit open ocean waters provides a favorable ecological
niche for nitrogen-fixing (diazotrophic) cyanobacteria, some of which associate symbiotically …

Symbiotic interactions were key to the evolution of chloroplast and mitochondria organelles,
which mediate carbon and energy metabolism in eukaryotes. Biological nitrogen fixation, the …

Nitrogen (N) is a key element for life in the oceans. It controls primary productivity in many
parts of the global ocean, consequently playing a crucial role in the uptake of atmospheric …

The third edition of this bestselling text has been rigorously updated to reflect major new
discoveries and concepts since 2011, especially progress due to extensive application of …

Biological dinitrogen (N 2) fixation is a key metabolic process exclusively performed by
prokaryotes, some of which are symbiotic with eukaryotes. Species of the marine haptophyte …

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 phylogeny of nitrogenase has only been analyzed using the structural proteins NifHDK.
As nifHDKENB has been established as the minimum number of genes necessary for in …

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 …