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High impact information on Thiotrichaceae

  • This study demonstrated that integrating lipid biomarkers, stable isotopes, and molecular DNA could enhance our understanding of the metabolic functions of Beggiatoa mats in sulfide-rich marine sediments associated with gas hydrates in the Gulf of Mexico and other locations [1].
  • Calculations of the diffusive nitrate flux and the potential sulphide oxidation by Beggiatoa spp. show that the bacteria may play a critical role for the sulphur cycling and the nitrogen balance in these coastal environments [2].
  • Until recently, the genera Beggiatoa and Thioploca were recognized and differentiated on the basis of morphology alone; they were distinguished by the fact that numerous Thioploca filaments are contained within a common polysaccharide sheath, while Beggiatoa filaments occur singly [3].
  • On the other hand, sulfur stored by filaments of Thiothrix nivea was oxidized to extracellular soluble oxidation products, including sulfate [4].
  • Beggiatoa spp. lacked catalase and oxidase, and filaments were motile [5].

Chemical compound and disease context of Thiotrichaceae

  • Filamentous sulphide-oxidizing Beggiatoa spp. often occur in large numbers in the coastal seabed without forming visible mats on the sediment surface [2].
  • Phylogenetic affinity of a wide, vacuolate, nitrate-accumulating Beggiatoa sp. from Monterey Canyon, California, with Thioploca spp [3].
  • The H2S specialists, Beggiatoa and Thiovulum, are optimally adapted to compete with the autocatalytic oxidation of H2S by O2 [6].
  • A comparison of sulphide oxidation processes in the chemoclines of the Black Sea, the Solar Lake and in A beggiatoa mat indicated that depth scales and retention times of coexisting O2 and H2S regulate the bacterial involvement in the sulphide oxidation [6].
  • Type 021N organisms utilized glucose, lacked a sheath, and differed from Thiothrix spp. in several aspects of cellular and cultural morphology [5].

Anatomical context of Thiotrichaceae

  • The Beggiatoa spp. filaments were found to store nitrate, presumably in liquid vacuoles up to a concentration of 370 mM NO3-, similar to the related large marine sulphur bacteria, Thioploca and Thiomargarita [2].


  1. Lipid biomarkers and carbon isotope signatures of a microbial (Beggiatoa) mat associated with gas hydrates in the gulf of Mexico. Zhang, C.L., Huang, Z., Cantu, J., Pancost, R.D., Brigmon, R.L., Lyons, T.W., Sassen, R. Appl. Environ. Microbiol. (2005) [Pubmed]
  2. Phylogeny and distribution of nitrate-storing Beggiatoa spp. in coastal marine sediments. Mussmann, M., Schulz, H.N., Strotmann, B., Kjaer, T., Nielsen, L.P., Rosselló-Mora, R.A., Amann, R.I., Jørgensen, B.B. Environ. Microbiol. (2003) [Pubmed]
  3. Phylogenetic affinity of a wide, vacuolate, nitrate-accumulating Beggiatoa sp. from Monterey Canyon, California, with Thioploca spp. Ahmad, A., Barry, J.P., Nelson, D.C. Appl. Environ. Microbiol. (1999) [Pubmed]
  4. Sulfur metabolism in Beggiatoa alba. Schmidt, T.M., Arieli, B., Cohen, Y., Padan, E., Strohl, W.R. J. Bacteriol. (1987) [Pubmed]
  5. Filamentous sulfur bacteria of activated sludge: characterization of Thiothrix, Beggiatoa, and Eikelboom type 021N strains. Williams, T.M., Unz, R.F. Appl. Environ. Microbiol. (1985) [Pubmed]
  6. Ecology of the bacteria of the sulphur cycle with special reference to anoxic-oxic interface environments. Jørgensen, B.B. Philos. Trans. R. Soc. Lond., B, Biol. Sci. (1982) [Pubmed]
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