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- Publications
- Influence
Trichodesmium, a Globally Significant Marine Cyanobacterium
- D. Capone, J. Zehr, H. Paerl, B. Bergman, E. Carpenter
- Biology
- 23 May 1997
Planktonic marine cyanobacteria of the genus Trichodesmium occur throughout the oligotrophic tropical and subtropical oceans. Their unusual adaptations, from the molecular to the macroscopic level,… Expand
Nitrogenase gene diversity and microbial community structure: a cross-system comparison.
- J. Zehr, B. Jenkins, S. Short, G. Steward
- Biology, Medicine
- Environmental microbiology
- 1 July 2003
Biological nitrogen fixation is an important source of fixed nitrogen for the biosphere. Microorganisms catalyse biological nitrogen fixation with the enzyme nitrogenase, which has been highly… Expand
Unicellular cyanobacteria fix N2 in the subtropical North Pacific Ocean
- J. Zehr, J. B. Waterbury, +5 authors D. Karl
- Biology, Medicine
- Nature
- 9 August 2001
Fixed nitrogen (N) often limits the growth of organisms in terrestrial and aquatic biomes, and N availability has been important in controlling the CO2 balance of modern and ancient oceans. The… Expand
High rates of N2 fixation by unicellular diazotrophs in the oligotrophic Pacific Ocean
- J. Montoya, C. Holl, J. Zehr, A. Hansen, T. A. Villareal, D. Capone
- Biology, Medicine
- Nature
- 26 August 2004
The availability of nitrogen is important in regulating biological productivity in marine environments. Deepwater nitrate has long been considered the major source of new nitrogen supporting primary… Expand
Use of degenerate oligonucleotides for amplification of the nifH gene from the marine cyanobacterium Trichodesmium thiebautii.
- J. Zehr, L. McReynolds
- Biology, Medicine
- Applied and environmental microbiology
- 1 October 1989
Trichodesmium spp. are marine filamentous, nonheterocystous, nitrogen-fixing cyanobacteria which are an important component of marine ecosystems. This organism has never been maintained in axenic… Expand
Nitrogen Cycling in the Ocean: New Perspectives on Processes and Paradigms
The nitrogen (N) cycle is composed of multiple transformations of nitrogenous compounds, catalyzed primarily by microbes. The N cycle controls the availability of nitrogenous nutrients and biological… Expand
Vertical distributions of nitrogen-fixing phylotypes at Stn ALOHA in the oligotrophic North Pacific Ocean
- M. Church, B. Jenkins, D. Karl, J. Zehr
- Biology
- 21 January 2005
In large areas of the world's oceans, biological dinitrogen (N 2 ) fixation supports a significant fraction of ecosystem productivity; to date, however, there is little information on the abundances… Expand
Influence of the Amazon River plume on distributions of free-living and symbiotic cyanobacteria in the western tropical north Atlantic Ocean
- R. Foster, A. Subramaniam, C. Mahaffey, E. Carpenter, D. Capone, J. Zehr
- Biology
- 1 March 2007
The vertical and horizontal distributions of seven diazotrophic populations in the western tropical north Atlantic (WTNA) Ocean were examined using a nifH DNA quantitative polymerase chain reaction… Expand
Nitrogen fixation and transfer in open ocean diatom–cyanobacterial symbioses
- R. Foster, M. Kuypers, T. Vágner, Ryan W Paerl, N. Musat, J. Zehr
- Biology, Medicine
- The ISME Journal
- 31 March 2011
Many diatoms that inhabit low-nutrient waters of the open ocean live in close association with cyanobacteria. Some of these associations are believed to be mutualistic, where N2-fixing cyanobacterial… Expand
GROWTH AND NITROGEN FIXATION OF THE DIAZOTROPHIC FILAMENTOUS NONHETEROCYSTOUS CYANOBACTERIUM TRICHODESMIUM SP. IMS 101 IN DEFINED MEDIA: EVIDENCE FOR A CIRCADIAN RHYTHM 1
Trichodesmium sp. IMS 101, originally isolated from coastal western Atlantic waters by Prufert‐Bebout and colleagues and maintained in seawater‐based media, was successfully cultivated in two… Expand