Sulfide and thiosulfate-oxidizing bacteria in anoxic marine basins

Tuttle, Jon H.; Jannasch, Holger W.

doi:10.1007/bf00387676

Cited by 86 publications

(55 citation statements)

References 11 publications

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“…Instead we found heterotrophic or mixotrophic bacteria which catalyze the oxidation of sulfide and thiosulfate to polythionates (Tuttle and Jannasch 1973u).…”

mentioning

confidence: 76%

“…The anoxic zone is characterized by the presence of hydrogen sulfide which increases with depth from the oxygen-sul- We previously published some measurements of dark CO, assimilation made in the trench during summer 1971 (Tuttle and Jannasch 1973u). Although erratic results led us to express our findings in relative terms, the data suggested that the Cariaco Trench, like the Black Sea, has a band of microbial activity associated with the interface of the oxygen-containing upper waters and the anoxic sulfidebearing deeps (Sorokin 1964(Sorokin , 1970(Sorokin , 1972Sen Gupta and Jannasch 1973).…”

mentioning

confidence: 99%

“…ble maximum concentration of reduced sulfur compounds other than sulfide near the interface (Tuttle and Jannasch 1973u) is re-examined.…”

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confidence: 99%

“…Details of the procedure used on Atlantis II cruise 60 to measure dark assimilation of CO, have been given elsewhere (Tuttle and Jannasch 1973u). We must emphasize that the 1971 determinations were made by somewhat different procedures than those in 1973.…”

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confidence: 99%

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Microbial dark assimilation of CO₂ in the Cariaco Trench1

Tuttle

Jannasch

1979

Limnology & Oceanography

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Dark assimilation of carbon dioxide has been measured in water from the oxygen‐sulfide interface and the deep anoxic zone in the Cariaco Trench. Comparison of rates of interface‐associated dark assimilation with primary production and organic carbon flux to the deep anoxic water indicates that chemoautotrophic sulfur bacteria cannot be wholly responsible for carbon dioxide assimilation at the observed magnitude. It is suggested that dark assimilation of carbon dioxide near the interface chiefly represents the metabolic activities of facultatively and obligately anaerobic bacteria which use inorganic sulfur compounds as electron acceptors, and sulfide or thiosulfate‐oxidizing bacteria whose growth is dependent upon organic carbon.

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“…Instead we found heterotrophic or mixotrophic bacteria which catalyze the oxidation of sulfide and thiosulfate to polythionates (Tuttle and Jannasch 1973u).…”

mentioning

confidence: 76%

mentioning

confidence: 99%

“…ble maximum concentration of reduced sulfur compounds other than sulfide near the interface (Tuttle and Jannasch 1973u) is re-examined.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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Microbial dark assimilation of CO₂ in the Cariaco Trench1

Tuttle

Jannasch

1979

Limnology & Oceanography

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“…The reproducibility of analyses from cast to cast in the top 50-75 m of the anoxic zone was poorer than at other depths, perhaps due to lateral variations in interface chemistry or to small uncertainties in sampling depth. Previous work in the Cariaco Trench (Karl et al 1977;Tuttle and Jannasch 1973) At depth in the trench, hydrogen concentrations are constant within experimental error from about 500 to 1,300 m. In contrast, methane, sulfide, and nutrient concentrations increase significantly over this same depth range (Richards 1975 …”

Section: Resultsmentioning

confidence: 99%

The distribution and cycling of hydrogen gas in the waters of two anoxic marine environments1,2

Scranton

Novelli

Loud

1984

Limnology & Oceanography

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Using a highly sensitive analytical method and careful attention to the possibility of contamination, we have measured hydrogen gas in the waters of a coastal anoxic salt pond and of the Cariaco Trench. Hydrogen concentrations in the anoxic portion of the coastal pond ranged from 0.4 to 3.5 nM and showed strong diel variations (factor of 2-4 at a single depth over 24 h) just below the anoxic interface; no diel variations were seen near the bottom. Concentrations also varied systematically with depth (factor of 6) and from day to day at a single depth (factor of 2). Uptake experiments designed to evaluate the importance of light and sulfate reduction to hydrogen cycling indicated that hydrogen consumption is not light-dependent either just below the anoxic interface (3.5 m) or near the bottom of the pond (4.5 m), and addition of 20 mM NaMoO, (an inhibitor of sulfate reduction) decreased hydrogen consumption at 4.5 m but not at 3.5 m. Because hydrogen uptake was independent of light, we suggest that diel variations in hydrogen concentration may be due to production of hydrogen in dark reactions by photosynthetic sulfur bacteria rather than to variations in uptake. In the Cariaco Trench hydrogen concentrations were uniform at about 0.2 nM throughout the anoxic portions of the basin. However, there was an indication of a maximum (0.4 nM) just below the anoxic interface, perhaps due to a greater supply of labile organic compounds to the fermentative bacteria at these depths or to physiological differences in bacteria with depth.

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