Sulfate reducing bacteria in microbial mats

Changing paradigms, new discoveries

L. K. Baumgartner, Pamela R Reid, C. Dupraz, A. W. Decho, D. H. Buckley, J. R. Spear, K. M. Przekop, Pieter T. Visscher

Research output: Contribution to journalArticle

214 Citations (Scopus)

Abstract

Sulfate reducing bacteria (SRB) have existed throughout much of Earth's history and remain major contributors to carbon cycling in modern systems. Despite their importance, misconceptions about SRB are prevalent. In particular, SRB are commonly thought to lack oxygen tolerance and to exist only in anoxic environments. Through the last two decades, researchers have discovered that SRB can, in fact, tolerate and even respire oxygen. Investigations of microbial mat systems have demonstrated that SRB are both abundant and active in the oxic zones of mats. Additionally, SRB have been found to be highly active in the lithified zones of microbial mats, suggesting a connection between sulfate reduction and mat lithification. In the present paper, we review recent research on SRB distribution and present new preliminary findings on both the diversity and distribution of δ-proteobacterial SRB in lithifying and non-lithifying microbial mat systems. These preliminary findings indicate the unexplored diversity of SRB in a microbial mat system and demonstrate the close microspatial association of SRB and cyanobacteria in the oxic zone of the mat. Possible mechanisms and further studies to elucidate mechanisms for carbonate precipitation via sulfate reduction are also discussed.

Original languageEnglish (US)
Pages (from-to)131-145
Number of pages15
JournalSedimentary Geology
Volume185
Issue number3-4 SPEC. ISS.
DOIs
StatePublished - Mar 15 2006

Fingerprint

microbial mat
sulfate-reducing bacterium
sulfate
lithification
oxygen
cyanobacterium
tolerance
carbonate

Keywords

  • Biofilms
  • Carbonate precipitation
  • Lithification
  • Microbial mats
  • Stromatolites
  • Sulfate-reducing bacteria

ASJC Scopus subject areas

  • Geology
  • Stratigraphy

Cite this

Baumgartner, L. K., Reid, P. R., Dupraz, C., Decho, A. W., Buckley, D. H., Spear, J. R., ... Visscher, P. T. (2006). Sulfate reducing bacteria in microbial mats: Changing paradigms, new discoveries. Sedimentary Geology, 185(3-4 SPEC. ISS.), 131-145. https://doi.org/10.1016/j.sedgeo.2005.12.008

Sulfate reducing bacteria in microbial mats : Changing paradigms, new discoveries. / Baumgartner, L. K.; Reid, Pamela R; Dupraz, C.; Decho, A. W.; Buckley, D. H.; Spear, J. R.; Przekop, K. M.; Visscher, Pieter T.

In: Sedimentary Geology, Vol. 185, No. 3-4 SPEC. ISS., 15.03.2006, p. 131-145.

Research output: Contribution to journalArticle

Baumgartner, LK, Reid, PR, Dupraz, C, Decho, AW, Buckley, DH, Spear, JR, Przekop, KM & Visscher, PT 2006, 'Sulfate reducing bacteria in microbial mats: Changing paradigms, new discoveries', Sedimentary Geology, vol. 185, no. 3-4 SPEC. ISS., pp. 131-145. https://doi.org/10.1016/j.sedgeo.2005.12.008
Baumgartner LK, Reid PR, Dupraz C, Decho AW, Buckley DH, Spear JR et al. Sulfate reducing bacteria in microbial mats: Changing paradigms, new discoveries. Sedimentary Geology. 2006 Mar 15;185(3-4 SPEC. ISS.):131-145. https://doi.org/10.1016/j.sedgeo.2005.12.008
Baumgartner, L. K. ; Reid, Pamela R ; Dupraz, C. ; Decho, A. W. ; Buckley, D. H. ; Spear, J. R. ; Przekop, K. M. ; Visscher, Pieter T. / Sulfate reducing bacteria in microbial mats : Changing paradigms, new discoveries. In: Sedimentary Geology. 2006 ; Vol. 185, No. 3-4 SPEC. ISS. pp. 131-145.
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