Publications

desulfonatronovibrio hydrogenovorans gen. nov., sp. nov., an alkaliphilic, sulfate-reducing bacterium.	a new alkaliphilic, sulfate-reducing bacterium, strain z-7935t (t = type strain), was isolated from a soda-depositing lake, lake magadi in kenya. this organism is a motile vibrio which utilizes only hydrogen and formate as electron donors and sulfate, sulfite, and thiosulfate, but not sulfur, as electron acceptors. thiosulfate is dismutated. strain z-7935t is an obligately sodium-dependent alkaliphile which grows in sodium carbonate medium and does not grow at ph 7; the maximum ph for growth is ...	1997	8995816
bioenergetics of the alkaliphilic sulfate-reducing bacterium desulfonatronovibrio hydrogenovorans.	energy metabolism of the alkaliphilic sulfate-reducing bacterium desulfonatronovibrio hydrogenovorans strain z-7935 was investigated in continuous culture and in physiological experiments on washed cells. when grown in chemostats with h2 as electron donor, the cells had extrapolated growth yields [y(max), g dry cell mass (mol electron acceptor)(-1)] of 5.5 with sulfate and 12.8 with thiosulfate. the maintenance energy coefficients were 1.9 and 1.3 mmol (g dry mass)(-1) x h(-1), and the minimum d ...	2002	11882721
desulfonauticus submarinus gen. nov., sp. nov., a novel sulfate-reducing bacterium isolated from a deep-sea hydrothermal vent.	a novel moderately thermophilic, hydrogenotrophic, sulfate-reducing bacterium, strain 6n(t) (=dsm 15269(t)=cip 107713(t)), was isolated from matrixes of alvinella and riftia originating from deep-sea hydrothermal-vent samples collected on the 13 degrees n east-pacific rise at a depth of approximately 2600 m. it was a gram-negative, non-sporulating, curved rod, motile with one polar flagellum, that did not possess desulfoviridin. it grew at temperatures ranging from 30 to 60 degrees c, with an op ...	2003	13130052
["candidatus contubernalis alkalaceticum," an obligately syntrophic alkaliphilic bacterium capable of anaerobic acetate oxidation in a coculture with desulfonatronum cooperativum].	from the silty sediments of the khadyn soda lake (tuva), a binary sulfidogenic bacterial association capable of syntrophic acetate oxidation at ph 10.0 was isolated. an obligately syntrophic, gram-positive, spore-forming alkaliphilic rod-shaped bacterium performs acetate oxidation in a syntrophic association with a hydrogenotrophic, alkaliphilic sulfate-reducing bacterium; the latter organism was previously isolated and characterized as the new species desulfonatronum cooperativum. other sulfate ...	2005	16400991
characterization of bacterial community associated to biofilms of corroded oil pipelines from the southeast of mexico.	microbial communities associated to biofilms promote corrosion of oil pipelines. the community structure of bacteria in the biofilm formed in oil pipelines is the basic knowledge to understand the complexity and mechanisms of metal corrosion. to assess bacterial diversity, biofilm samples were obtained from x52 steel coupons corroded after 40 days of exposure to normal operation and flow conditions. the biofilm samples were directly used to extract metagenomic dna, which was used as template to ...	2006	16765858
[alkaliphilic sulfidogenesis on cellulose by combined cultures].	soda lakes are characterized by an intense sulfur cycle that begins with sulfidogenesis. model laboratory experiments that involved combining of pure cultures showed that, during anaerobic decomposition of cellulose by clostridium alkalicellulosi, the sulfate-reducing bacteria (srb) of the species desulfonatronovibrio hydrogenovorans, desulfonatronum lacustre, and desulfonatronum cooperativum, different in their nutritional requirements, may directly use the cellulose fermentation products for s ...	2008	18825973
thermodynamic limits to microbial life at high salt concentrations.	life at high salt concentrations is energetically expensive. the upper salt concentration limit at which different dissimilatory processes occur in nature appears to be determined to a large extent by bioenergetic constraints. the main factors that determine whether a certain type of microorganism can make a living at high salt are the amount of energy generated during its dissimilatory metabolism and the mode of osmotic adaptation used. i here review new data, both from field observations and f ...	2010	21054738
culturable diversity of lithotrophic haloalkaliphilic sulfate-reducing bacteria in soda lakes and the description of desulfonatronum thioautotrophicum sp. nov., desulfonatronum thiosulfatophilum sp. nov., desulfonatronovibrio thiodismutans sp. nov., and desulfonatronovibrio magnus sp. nov.	soda lake sediments usually contain high concentrations of sulfide indicating active sulfate reduction. monitoring of sulfate-reducing bacteria (srb) in soda lakes demonstrated a dominance of two groups of culturable srb belonging to the order desulfovibrionales specialized in utilization of inorganic electron donors, such as formate, h(2) and thiosulfate. the most interesting physiological trait of the novel haloalkaliphilic srb isolates was their ability to grow lithotrophically by dismutation ...	2011	21479878
the microbial sulfur cycle at extremely haloalkaline conditions of soda lakes.	soda lakes represent a unique ecosystem with extremely high ph (up to 11) and salinity (up to saturation) due to the presence of high concentrations of sodium carbonate in brines. despite these double extreme conditions, most of the lakes are highly productive and contain a fully functional microbial system. the microbial sulfur cycle is among the most active in soda lakes. one of the explanations for that is high-energy efficiency of dissimilatory conversions of inorganic sulfur compounds, both ...	2011	21747784
sulfidogenesis in hypersaline chloride-sulfate lakes of kulunda steppe (altai, russia).	the activity and culturable diversity of sulfidogens were investigated in anoxic sediments of four hypersaline lakes with ph 7.6-8.2 in the kulunda steppe (altai, russia). sulfate reduction rates were low, varying from 0.1 to 6.0 nmol hs(-) /(cm(3) h) with a maximum in the top 10 cm layer. potential sulfidogenic rates with thiosulfate and sulfur as the e-acceptors were higher than with sulfate and were stimulated by formate, lactate, and acetate. sulfidogenesis was optimal at salt concentration ...	2011	22092787