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The Protist Ribosomal Reference database (PR2): a catalog of unicellular eukaryote Small Sub-Unit rRNA sequences with curated taxonomy
TLDR
The presence of both rRNA and rDNA sequences, taking into account introns (crucial for eukaryotic sequences), a normalized eight terms ranked-taxonomy and updates of new GenBank releases were made possible by a long-term collaboration between experts in taxonomy and computer scientists.
Application of Denaturing Gradient Gel Electrophoresis (DGGE) To Study the Diversity of Marine Picoeukaryotic Assemblages and Comparison of DGGE with Other Molecular Techniques
TLDR
The prasinophyte group appeared to be the most abundant group in the surface Mediterranean samples as determined by the authors' molecular analyses, and the DGGE method provided a reasonably detailed view of marine picoeukaryotic assemblages and allowed tentative phylogenetic identification of the dominant members.
Study of Genetic Diversity of Eukaryotic Picoplankton in Different Oceanic Regions by Small-Subunit rRNA Gene Cloning and Sequencing
TLDR
The diversity of marine picoeukaryotes was determined by sequencing cloned 18S rRNA genes in five genetic libraries from North Atlantic, Southern Ocean, and Mediterranean Sea surface waters, and the phylogenetic diversity in each library was rather great, and each library included many different OTUs and members of very distantly related phylogenetic groups.
Seasonal and Spatial Variability of Bacterial and Archaeal Assemblages in the Coastal Waters near Anvers Island, Antarctica
TLDR
The data indicate that changes in Antarctic seasons are accompanied by significant shifts in the species composition of bacterioplankton assemblages and by large decreases in the relative proportion of archaeal rRNA in the nearshore water column.
Vertical distribution and phylogenetic characterization of marine planktonic Archaea in the Santa Barbara Channel
TLDR
Data suggest that marine planktonic crenarchaea and euryarchaea of temperate coastal habitats thrive in different zones of the water column, and that its members constitute a significant fraction of the prokaryotic biomass in subsurface coastal waters.
Prokaryotic genetic diversity throughout the salinity gradient of a coastal solar saltern.
TLDR
Water samples from eight ponds were analysed, covering a salinity range from near sea water to saturated sodium chloride, and both Bacteria and Archaea showed the same pattern; as salinity increased, the number of different clusters decreased, and only one cluster became dominant.
A Few Cosmopolitan Phylotypes Dominate Planktonic Archaeal Assemblages in Widely Different Oceanic Provinces
TLDR
The clonal diversity as determined by the RFLP analysis was low, and most libraries were dominated by only one or two OTUs; some OTUs were found in samples obtained from very distant places, indicating that some phylotypes were ubiquitous.
DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1
TLDR
The Arctic Micromonas differed from genotypes elsewhere in the World Ocean, implying that the Arctic Basin is a marine microbial province containing endemic species, consistent with the biogeography of its macroorganisms.
Global phylogeography of marine Synechococcus and Prochlorococcus reveals a distinct partitioning of lineages among oceanic biomes.
TLDR
It is shown that the distribution patterns of Prochlorococcus and Synechococcus lineages are remarkably similar in different ocean systems with comparable environmental conditions, but producing a strikingly different 'signature' in the four major ocean domains or biomes.
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