6 documents found, page 1 of 1
Bacterial glycerol oxidation coupled to sulfate reduction at neutral and acidic pH
Santos, Sidnei C.; Liebensteiner, Martin G.; van Gelder, Antonie H.; Dimitrov, Mauricio R.; Almeida, Paulo F.; Quintella, Cristina M.Glycerol is a main co-product of biodiesel production. Crude glycerol may serve as a cheap and attractive substrate in biotechnological applications, e.g. for the production of valuable chemicals or as an electron donor for reduction processes. In this work, sulfate reduction with glycerol was studied at neutral and acidic pH using bioreactor sludge samples and Tinto River sediments as a source of inoculum, res...
Microbial synthesis and transformation of inorganic and organic chlorine compounds
Atashgahi, Siavash; Liebensteiner, Martin G.; Janssen, Dick B.; Smidt, Hauke; Stams, Alfons Johannes Maria; Sipkema, DetmerOrganic and inorganic chlorine compounds are formed by a broad range of natural geochemical, photochemical and biological processes. In addition, chlorine compounds are produced in large quantities for industrial, agricultural and pharmaceutical purposes, which has led to widespread environmental pollution. Abiotic transformations and microbial metabolism of inorganic and organic chlorine compounds combined wit...
Microbial respiration with chlorine oxyanions: diversity and physiological and ...
Liebensteiner, Martin G.; Oosterkamp, Margreet J.; Stams, Alfons Johannes MariaChlorine oxyanions are valuable electron acceptors for microorganisms. Recent findings have shed light on the natural formation of chlorine oxyanions in the environment. These suggest a permanent introduction of respective compounds on Earth, long before their anthropogenic manufacture. Microorganisms that are able to grow by the reduction of chlorate and perchlorate are affiliated with phylogenetically diverse...
Perchlorate and chlorate reduction by the Crenarchaeon Aeropyrum pernix and two...
Liebensteiner, Martin G.; Pinkse, Martijn W. H.; Nijsse, Bart; Verhaert, Peter D. E. M.; Tsesmetzis, Nicolas; Stams, Alfons Johannes MariaThis study reports the ability of one hyperthermophile and two thermophilic microorganisms to grow anaerobically by the reduction of chlorate and perchlorate. Physiological, genomic and proteome analyses suggest that the Crenarchaeon Aeropyrum pernix reduces perchlorate with a periplasmic enzyme related to nitrate reductases, but that it lacks a functional chlorite-disproportionating enzyme (Cld) to complete th...
Microbial redox processes in deep subsurface environments and the potential app...
Liebensteiner, Martin G.; Tsesmetzis, N.; Stams, Alfons Johannes Maria; Lomans, Bart P.The ability of microorganisms to thrive under oxygen-free conditions in subsurface environments relies on the enzymatic reduction of oxidized elements, such as sulfate, ferric iron, or CO2, coupled to the oxidation of inorganic or organic compounds. A broad phylogenetic and functional diversity of microorganisms from subsurface environments has been described using isolation-based and advanced molecular ecologi...
Archaeal (per)chlorate reduction at high temperature: an interplay of biotic an...
Liebensteiner, Martin G.; Pinkse, Martijn W. H.; Schaap, Peter J.; Stams, Alfons Johannes Maria; Lomans, Bart P.Perchlorate and chlorate anions [(per)chlorate] exist in the environment from natural and anthropogenic sources, where they can serve as electron acceptors for bacteria. We performed growth experiments combined with genomic and proteomic analyses of the hyperthermophile Archaeoglobus fulgidus that show (per)chlorate reduction also extends into the archaeal domain of life. The (per)chlorate reduction pathway in ...