Changes in northern Gulf of Mexico sediment bacterial and archaeal communities exposed to hypoxia

Geobiology
R DevereuxAnthony V Palumbo

Abstract

Biogeochemical changes in marine sediments during coastal water hypoxia are well described, but less is known about underlying changes in microbial communities. Bacterial and archaeal communities in Louisiana continental shelf (LCS) hypoxic zone sediments were characterized by pyrosequencing 16S rRNA V4-region gene fragments obtained by PCR amplification of community genomic DNA with bacterial- or archaeal-specific primers. Duplicate LCS sediment cores collected during hypoxia had higher concentrations of Fe(II), and dissolved inorganic carbon, phosphate, and ammonium than cores collected when overlying water oxygen concentrations were normal. Pyrosequencing yielded 158,686 bacterial and 225,591 archaeal sequences from 20 sediment samples, representing five 2-cm depth intervals in the duplicate cores. Bacterial communities grouped by sampling date and sediment depth in a neighbor-joining analysis using Chao-Jaccard shared species values. Redundancy analysis indicated that variance in bacterial communities was mainly associated with differences in sediment chemistry between oxic and hypoxic water column conditions. Gammaproteobacteria (26.5%) were most prominent among bacterial sequences, followed by Firmicutes (9.6%), and Alpha...Continue Reading

References

Feb 1, 1996·Applied and Environmental Microbiology·M T Suzuki, S J Giovannoni
Aug 30, 2001·Applied and Environmental Microbiology·D R SingletonW B Whitman
Jan 1, 1989·Geochimica Et Cosmochimica Acta·D E Canfield
Feb 27, 2004·Nucleic Acids Research·Wolfgang LudwigKarl-Heinz Schleifer
Jul 6, 2006·Applied and Environmental Microbiology·Ketil B Sørensen, Andreas Teske
Jun 26, 2007·Applied and Environmental Microbiology·Qiong WangJames R Cole
May 29, 2008·Environmental Science & Technology·R Eugene TurnerDubravko Justic
Aug 13, 2008·Proceedings of the National Academy of Sciences of the United States of America·Steven D Allison, Jennifer B H Martiny
Aug 16, 2008·Science·Robert J Diaz, Rutger Rosenberg
Nov 14, 2008·Nucleic Acids Research·J R ColeJ M Tiedje
Jan 30, 2009·Environmental Science & Technology·Linda A Amaral-ZettlerRebecca J Gast
Sep 1, 2009·Nature Methods·Jens Reeder, Rob Knight
Apr 28, 2010·Proceedings of the National Academy of Sciences of the United States of America·C B WalkerD A Stahl
Jun 11, 2010·Proceedings of the National Academy of Sciences of the United States of America·J Gregory CaporasoRob Knight
Sep 28, 2010·Applied and Environmental Microbiology·Byoung-Joon ParkSung-Keun Rhee
Nov 9, 2010·Applied and Environmental Microbiology·Tatiana A VishnivetskayaDwayne A Elias
Nov 11, 2011·The ISME Journal·C Brochier-ArmanetP Forterre
May 5, 2012·Bioinformatics·Elmar PruesseFrank Oliver Glöckner
Oct 3, 2012·Proceedings of the National Academy of Sciences of the United States of America·Steffen Leth JorgensenChrista Schleper
Mar 29, 2013·Nature·Karen G LloydBo Barker Jørgensen
Oct 1, 2010·Environmental Microbiology Reports·Alan M Durbin, Andreas Teske
Oct 18, 2013·Molecular Biology and Evolution·Koichiro TamuraSudhir Kumar
Jan 24, 2014·The ISME Journal·Olivia U MasonJanet K Jansson
Feb 21, 2014·The ISME Journal·Lauren M SeylerLee J Kerkhof

Related Concepts

Related Feeds

Archaeogenetics

Recent advances in genomic sequencing has led to the discovery of new strains of Archaea and shed light on their evolutionary history. Discover the latest research on Archaeogenetics here.