Cyanobacterial blooms in oil-contaminated subtidal sediments revealed by integrated approaches

Environmental Microbiology Reports
Cuixiao XieZhenmei Lu

Abstract

Cyanobacteria are important primary producers on the surface of oceans and are susceptible to oil spills. However, their tolerance to oil and their roles in the bioremediation of crude oil remain elusive. We analysed the response of microbial communities to a simulated oil spill in estuarine sediment microcosms under a series of oil concentrations (0, 25, 125, and 250 g kg-1 dry wt.). Cyanobacterial blooms only occurred on the sediment surface in the low oil (LO, 25 g kg-1 dry wt.) group, and cyanobacteria grew from very small amounts to enriched levels according to an internal mechanism. The dominant phylotypes enriched in the oil-contaminated sediments on day 35 were Leptolyngbya, Oscillatoria, Arthrospira (Spirulina), Geitlerinema and Cyanothece, and the majority were capable of fixing nitrogen. Gammaproteobacterial blooms occurred during the early stage, and Oceanospirillales dominated the sediment surface. The annotation of unassembled metatranscriptomic data revealed an increase in nitrogen metabolism, particularly photosynthesis (antenna proteins) during the later stage, together with depletion of fatty acid metabolism. In summary, high concentrations of crude oil are toxic to cyanobacteria but can facilitate the emergen...Continue Reading

References

Aug 1, 1997·Applied and Environmental Microbiology·U NübelG Muyzer
Jan 5, 2002·Applied Microbiology and Biotechnology·C RaghukumarD Chandramohan
Dec 24, 2002·International Microbiology : the Official Journal of the Spanish Society for Microbiology·Yehuda Cohen
Sep 9, 2006·Environmental Microbiology·Florin MusatFriedrich Widdel
Aug 21, 2007·Applied and Environmental Microbiology·Sylvain BordenaveRobert Duran
Nov 14, 2008·Nucleic Acids Research·J R ColeJ M Tiedje
Apr 13, 2010·Nature Methods·J Gregory CaporasoRob Knight
Sep 18, 2010·Science·David L ValentineChristie J Villanueva
Jun 28, 2011·Bioinformatics·Robert C EdgarRob Knight
Aug 5, 2011·The ISME Journal·Zhenmei LuJizhong Zhou
Jan 12, 2012·Proceedings of the National Academy of Sciences of the United States of America·David L ValentineSophie Loire
Sep 18, 2012·Environmental Microbiology·Panagiota-Myrsini ChronopoulouTerry J McGenity
Jan 24, 2014·The ISME Journal·Olivia U MasonJanet K Jansson

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bioremediation (ASM)

Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.

Related Papers

Current Opinion in Biotechnology
Shigeaki HarayamaAkihiro Hara
Science of Aging Knowledge Environment : SAGE KE
Mary Beckman
© 2022 Meta ULC. All rights reserved