Most of the genetic, cellular, and biochemical diversity of life rests within single-celled
organisms—the prokaryotes (bacteria and archaea) and microbial eukaryotes (protists) …

The origin of oxygenic photosynthesis was the most important metabolic innovation in Earth
history. It allowed life to generate energy and reducing power directly from sunlight and …

Nitrogen fixation in the surface ocean impacts global marine nitrogen bioavailability and
thus microbial primary productivity. Until now, cyanobacterial populations have been viewed …

Cyanobacteria are photosynthetic prokaryotes that inhabit diverse aquatic and terrestrial
environments. However, the evolutionary mechanisms involved in the cyanobacterial habitat …

The cyanobacterial phylum encompasses oxygenic photosynthetic prokaryotes of a great
breadth of morphologies and ecologies; they play key roles in global carbon and nitrogen …

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

Symbioses between nitrogen (N) 2–fixing prokaryotes and photosynthetic eukaryotes are
important for nitrogen acquisition in N-limited environments. Recently, a widely distributed …

Recent studies suggest that unidentified prokaryotes fix inorganic carbon at globally
significant rates in the immense dark ocean. Using single-cell sorting and whole-genome …

Cyanobacteria were responsible for the oxygenation of the ancient atmosphere; however,
the evolution of this phylum is enigmatic, as relatives have not been characterized. Here we …

Biological N2 fixation is an important part of the marine nitrogen cycle as it provides a source
of new nitrogen that can support biological carbon export and sequestration. Research in …