Share This Author
Physicochemical Factors in Growth
A number of Pseudomonas and Bacillus species also exhibit a microaerophilic phenotype when growing in low-substrate media, and the oxidation-reduction (redox) potential provides a useful scale for measuring the degree of anaerobiosis.
Distinguishing Nitrous Oxide Production from Nitrification and Denitrification on the Basis of Isotopomer Abundances
Evaluating the site preferences of N2O produced during hydroxylamine oxidation by ammonia oxidizers and by a methanotroph, ammonia oxidation by a nitrifier, nitrite reduction during nitrifiers denitrification, and nitrate and nitrite Reduction by denitrifiers provides a basis to quantitatively apportion N2 O.
New Strategies for Cultivation and Detection of Previously Uncultured Microbes
- B. Stevenson, S. Eichorst, John T. Wertz, T. Schmidt, J. Breznak
- Biology, MedicineApplied and Environmental Microbiology
- 1 August 2004
An integrative approach was used to obtain pure cultures of previously uncultivated members of the divisions Acidobacteria and Verrucomicrobia from agricultural soil and from the guts of wood-feeding termites, illustrating the power of integrating culture methods with molecular techniques to isolate bacteria from phylogenetic groups underrepresented in culture.
Isolation and Characterization of Soil Bacteria That Define Terriglobus gen. nov., in the Phylum Acidobacteria
Six strains of acidobacterial 16S rRNA gene clones found in a never-tilled, successional plant community are sufficiently similar to one another, but distinct from previously named Acidobacteria, to warrant creation of a new genus, Terriglobus, with TerrigLobus roseus defined as the type species.
Genesis of Acetate and Methane by Gut Bacteria of Nutritionally Diverse Termites
Findings should help refine global estimates of carbon dioxide reduction in anoxic habitats and the contribution of termite emissions to atmospheric methane concentrations.
The Termite Gut Microflora as an Oxygen Sink: Microelectrode Determination of Oxygen and pH Gradients in Guts of Lower and Higher Termites
The oxic status of the peripheral hindgut lumen and its substantial oxygen consumption, together with previous reports of large numbers of aerobic and facultatively anaerobic bacteria in the hindGut microflora, challenge the notion that termite hindguts are a purely anoxic environment and, togetherwith the steep axial pH gradients in higher termites, refine the concept of this tiny microbial habitat.
Role of Microorganisms in the Digestion of Lignocellulose by Termites
Most of the synthesis of lignocellulose occurs in terrestrial ecosystems where it is balanced, or nearly so, by the decomposition/respiration side of the carbon cycle (63).
Physiological ecology of Methanobrevibacter cuticularis sp. nov. and Methanobrevibacter curvatus sp. nov., isolated from the hindgut of the termite Reticulitermes flavipes
Two morphologically distinct, H2- and CO2-utilizing methanogens were isolated from gut homogenates of the subterranean termite, Reticulitermes-flavipes (Kollar) (Rhinotermitidae). Strain RFM-1 was a…
Nitrogen isotopomer site preference of N2O produced by Nitrosomonas europaea and Methylococcus capsulatus Bath.
- R. Sutka, N. Ostrom, P. Ostrom, H. Gandhi, J. Breznak
- BiologyRapid communications in mass spectrometry : RCM
- 15 April 2003
The site preferences in this study are the first measured values for isolated microbial processes and indicate that isotopomers provide a basis for apportioning biological processes producing N(2)O.
Ecology of Prokaryotic Microbes in the Guts of Wood- and Litter-Feeding Termites
- J. Breznak
- Biology, Environmental Science
Isolation of a number of the prokaryotes (including spirochetes, which have proven to be H2/CO2-acetogens) reveals that termite guts are a source of novel microbial diversity, however, molecular biological analyses indicate that much of that diversity is still poorly represented in culture.