Growth of the facultative anaerobe Shewanella putrefaciens by elemental sulfur reduction

Article Abstract:

The facultative anaerobe Shewanella putrefaciens grows by reducing elemental sulfur to H2S. A study conducted on the strain MR-1 indicates that the removal of the end product, H2S, supports growth at 2 to 30 mM of sulfur concentrations. Six out of nine strains of S. putrefaciens grow by reducing sulfur. Cell-to-sulfur contact is, however, unnecessary for growth. Low concentrations of Casamino Acids enhance growth on sulfur and are used by the organism as the only carbon and energy source.

Physiological aspects, Growth, Sulfur, Anaerobic bacteria, Amino acids

---

Physiology and enzymology involved in denitrification by Shewanella putrefaciens

Article Abstract:

The physiology and enzymology involved in denitrification by Shewanella putrefaciens was tested for coupling of the reduction of nitrate and/or nitrite. The study also examined the ability of S. putrefaciens to respire nitrate under aerobic growth conditions. Results reveal that anaerobic growth with nitrate led to rapid and complete reduction of nitrate to nitrite in all of the S. putrefaciens strains tested.

Research, Cultures (Biology), Denitrification

---

Utilization of DNA as a sole source of phosphorus, carbon, and energy by Shewanella spp.: ecological and physiological implications for dissimilatory metal reduction

Article Abstract:

The dissolved extracellular DNA has served as a single source of phosphorus, as well as carbon and energy, for metal-reducing bacteria of the genus Shewanella. The studies have shown that the ability to use exogenous DNA as the sole source of phosphorus is widespread among the shewanellae and is important for nutrient cycling in metal-reducing environments.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Phosphorus & Compounds, Elemental Phosphorus, Environmental aspects, Genetic aspects, Phosphorus, Phosphorus (Chemical element), Shewanella

Similar abstracts:

• Abstracts: Determinants of regulated proteolysis in signal transduction. Crystal structure of the DegS stress sensor: how a PDZ domain recognizes misfolded protein and activates a protease
• Abstracts: Specific detection of the gene for the extracellular neutral protease of Bacillus cereus by PCR and blot hybridization
• Abstracts: The citrate transport system of Lactococcus lactis subsp. lactis biovar diacetylactis is induced by acid stress
• Abstracts: Conservation of palsmid-encoded dibenzothiophene desulfurization genes in several rhodococci. Improvement of the thermostability and activity of a pectate lyase by single amino acid substitutions, using a strategy based on melting-temperature-guided sequence alignment

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.