A sulfide-oxidizing microorganism, Desulfurivibrio alkaliphilus (DA), generates a consistent
enrichment of sulfur-34 (34 S) in the produced sulfate of+ 12.5 per mil or greater. This …

The traditional tree of life from molecular biology with last universal common ancestor
(LUCA) branching into bacteria and archaea (though fuzzy) is likely formally valid enough to …

Studies of metal sulfide oxidation in acid mine drainage (AMD) systems have primarily
focused on pyrite oxidation, although acid soluble sulfides (eg, ZnS) are predominantly …

Microbial sulfate reduction is a primary cause of oil reservoir souring. Here we show that
amendment with chlorate or perchlorate [collectively (per) chlorate] potentially resolves this …

In batch culture experiments, we examined the isotopic change of nitrogen in nitrate (δ 15 N
NO3), carbon in dissolved inorganic carbon (δ 13 C DIC), and sulfur in sulfate (δ 34 S SO4) …

Crusts and chimneys composed of authigenic barite are found at methane seeps and
hydrothermal vents that expel fluids rich in barium. Microbial processes have not previously …

Viral infections modulate bacterial metabolism and ecology. Here, we investigated the
hypothesis that viruses influence the ecology of purple and green sulfur bacteria in anoxic …

Euxinic conditions, which are defined by the presence of sulfide in the water column, were
common in ancient oceans. However, it is not clear how the presence of sulfide in the water …

Mineralogy, geochemistry and sulfur (S) isotope composition of native sulfur (S 0)
precipitated at intraoceanic and intracontinental back-arc rift, submarine and subaerial …

Karst water is an important resource for drinking water supply. To determine the impacts of
urbanization on karst water quality, we performed a case study in the rapidly urbanized …