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Microorganisms pumping iron: anaerobic microbial iron oxidation and reduction
TLDR
Biological iron apportionment has been described as one of the most ancient forms of microbial metabolism on Earth, and as a conceivable extraterrestrial metabolism on other iron-mineral-rich planets such as Mars.
Ubiquity and Diversity of Dissimilatory (Per)chlorate-Reducing Bacteria
TLDR
The results of this study significantly increase the limited number of microbial isolates that are known to be capable of dissimilatory (per)chlorate reduction and demonstrate the hitherto unrecognized phylogenetic diversity and ubiquity of the microorganisms that exhibit this type of metabolism.
Microbial perchlorate reduction: rocket-fuelled metabolism
TLDR
The recent completion of the whole-genome sequence of the perchlorate-reducing microorganism Dechloromonas aromatica offers further insight into the evolution and regulation of this unique metabolic pathway.
Anaerobic benzene oxidation coupled to nitrate reduction in pure culture by two strains of Dechloromonas
TLDR
Two Dechloromonas strains are reported, RCB and JJ, that can completely mineralize various mono-aromatic compounds including benzene to CO2 in the absence of O2 with nitrate as the electron acceptor, the first example, to the authors' knowledge, of an organism of any type that can oxidize benzene anaerobically.
Environmental Factors That Control Microbial Perchlorate Reduction
TLDR
It is demonstrated that microbial respiration of perchlorate is significantly affected by environmental conditions and per chlorate reduction is directly dependent on bioavailable molybdenum and the presence or absence of competing electron acceptors.
Dechloromonas agitata gen. nov., sp. nov. and Dechlorosoma suillum gen. nov., sp. nov., two novel environmentally dominant (per)chlorate-reducing bacteria and their phylogenetic position.
TLDR
An in-depth analysis of these organisms which form two distinct monophyletic groups within the Rhodocyclus assemblage is presented and two new genera are proposed, Dechloromonas and Dechlorosoma, which represent the predominant (per)chlorate-reducing bacteria in the environment.
Reduction of (per)chlorate by a novel organism isolated from paper mill waste.
TLDR
Analysis of the complete sequence of the 16S rDNA indicates that strain CKB is a member of the beta subclass of the Proteobacteria, and is only the second organism shown to be capable of this metabolism.
Anaerobic Nitrate-Dependent Iron(II) Bio-Oxidation by a Novel Lithoautotrophic Betaproteobacterium, Strain 2002
TLDR
The isolation of strain 2002 represents the first example of an anaerobic, mesophilic, neutrophilic Fe(II)-oxidizing lithoautotrophic bacterium isolated from freshwater samples and provides further evidence for the potential of microbially mediated Fe( II) oxidation in anoxic environments.
Geobacter hydrogenophilus, Geobacter chapellei and Geobacter grbiciae, three new, strictly anaerobic, dissimilatory Fe(III)-reducers.
TLDR
Four new dissimilatory Fe(III)-reducers isolated from a petroleum-contaminated aquifer and a pristine, deep, subsurface aquifer represent three new species of the genus Geobacter, in the delta-Proteobacteria.
Photosynthetic and Phylogenetic Primers for Detection of Anoxygenic Phototrophs in Natural Environments
TLDR
A combination of phylogenetic- and photosynthesis-specific primers covers all groups of known anoxygenic phototrophs and shows promise as a molecular tool for the rapid assessment of natural samples in ecological studies of these organisms.
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