A wide array of microorganisms, including many novel, phylogenetically deeply rooted taxa,
survive and thrive in extreme environments. These unique and reduced-complexity …

▪ Abstract Since the delineation of 12 bacterial phyla by comparative phylogenetic analyses
of 16S ribosomal RNA in 1987 knowledge of microbial diversity has expanded dramatically …

The Epsilonproteobacteria is the fifth validly described class of the phylum Proteobacteria,
known primarily for clinical relevance and for chemolithotrophy in various terrestrial and …

The evolution of marine microbes over billions of years predicts that the composition of
microbial communities should be much greater than the published estimates of a few …

Microbes are difficult to culture. Consequently, the primary source of information about a
fundamental evolutionary topic, life's diversity, is the environmental distribution of gene …

The majority of life on Earth—notably, microbial life—occurs in places that do not receive
sunlight, with the habitats of the oceans being the largest of these reservoirs. Sunlight …

The dissolution of sulfide minerals such as pyrite (FeS2), arsenopyrite (FeAsS), chalcopyrite
(CuFeS2), sphalerite (ZnS), and marcasite (FeS2) yields hot, sulfuric acid-rich solutions that …

This review of material relevant to the Conference on Biosignature Preservation and
Detection in Mars Analog Environments summarizes the meeting materials and discussions …

Lithotrophic sulfur oxidation is an ancient metabolic process. Ecologically and taxonomically
diverged prokaryotes have differential abilities to utilize different reduced sulfur compounds …

The seabed is a diverse environment that ranges from the desert-like deep seafloor to the
rich oases that are present at seeps, vents, and food falls such as whales, wood or kelp. As …