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Generic assignments, strain histories, and properties of pure cultures of cyanobacteria
Revisions are designed to permit the generic identification of cultures, often difficult through use of the field-based system of phycological classification, and are both constant and readily determinable in cultured material. Expand
Isolation of an autotrophic ammonia-oxidizing marine archaeon
The isolation of a marine crenarchaeote that grows chemolithoautotrophically by aerobically oxidizing ammonia to nitrite—the first observation of nitrification in the Archaea is reported, suggesting that nitrifying marine Cren archaeota may be important to global carbon and nitrogen cycles. Expand
A novel free-living prochlorophyte abundant in the oceanic euphotic zone
The recent discovery of photosynthetic picoplankton has changed our understanding of marine food webs1. Both prokaryotic2,3 and eukaryotic4,5 species occur in most of the world's oceans and accountExpand
Resolution of Prochlorococcus and Synechococcus Ecotypes by Using 16S-23S Ribosomal DNA Internal Transcribed Spacer Sequences
The results provide further evidence that natural populations of Prochlorococcus and Synechococcus consist of multiple coexisting ecotypes, genetically closely related but physiologically distinct, which may vary in relative abundance with changing environmental conditions. Expand
Resistance to Co-Occurring Phages Enables Marine Synechococcus Communities To Coexist with Cyanophages Abundant in Seawater
Evidence is presented in support of the hypothesis that lytic phages have a negligible effect in regulating the densities of marine Synechococcus populations and that these viruses are maintained by scavenging on the relatively rare sensitive cells in these communities. Expand
Unicellular cyanobacteria fix N2 in the subtropical North Pacific Ocean
It is shown that there are unicellular cyanobacteria in the open ocean that are expressing nitrogenase, and are abundant enough to potentially have a significant role in N dynamics. Expand
Widespread occurrence of a unicellular, marine, planktonic, cyanobacterium
It is reported here the widespread occurrence of a small, marine, chroococcalean cyanobacterium belonging to the genus Synechococcus. Expand
Rapid Diversification of Marine Picophytoplankton with Dissimilar Light-Harvesting Structures Inferred from Sequences of Prochlorococcus and Synechococcus (Cyanobacteria)
Standard phylogenetic methods and newer algorithms insensitive to such biases did not recover different branching patterns within the marine picophytoplankton group, and failed to cluster Prochlorococcus with chloroplasts or other chlorophyll b-containing prokaryotes. Expand
Cyanophages infecting the oceanic cyanobacterium Prochlorococcus
The isolation of cyanophages that infect Prochlorococcus is reported, and it is hypothesized that gradients in cyanobacterial population diversity, growth rates, and/or the incidence of lysogeny underlie these trends. Expand