Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2016 Nov;24(11):916-927.
doi: 10.1016/j.tim.2016.07.002. Epub 2016 Jul 29.

Marine Non-Cyanobacterial Diazotrophs: Moving Beyond Molecular Detection

Affiliations
Review

Marine Non-Cyanobacterial Diazotrophs: Moving Beyond Molecular Detection

Deniz Bombar et al. Trends Microbiol. .

Abstract

The nitrogen input through biological N2 fixation is essential for life in vast areas of the global ocean. The belief is that cyanobacteria are the only relevant N2-fixing (diazotrophic) organisms. It has, however, now become evident that non-cyanobacterial diazotrophs, bacteria and archaea with ecologies fundamentally distinct from those of cyanobacteria, are widespread and occasionally fix N2 at significant rates. The documentation of a globally relevant nitrogen input from these diazotrophs would constitute a new paradigm for research on oceanic nitrogen cycling. Here we highlight the need for combining rate measurements and molecular analyses of field samples with cultivation studies in order to clarify the ecology of non-cyanobacteria and their contribution to marine N2 fixation on local and global scales.

Keywords: biogeochemistry; diazotroph; heterotrophic.; nifH; nitrogen fixation; ocean.

Similar articles

See all similar articles

Cited by 14 articles

See all "Cited by" articles

Publication types

LinkOut - more resources

Feedback