Anoxic carbon flux in photosynthetic microbial mats as revealed by metatranscriptomics [Anoxic carbon flux in photosynthetic microbial mats as revealed by metatranscriptomics and NanoSIMS.]
- Stanford Univ., CA (United States). Dept. of Chemical Engineering and Civil and Environmental Engineering; NASA Ames Research Center (ARC), Moffett Field, Mountain View, CA (United States). Exobiology Branch
- Stanford Univ., CA (United States). Dept. of Chemical Engineering and Civil and Environmental Engineering; NASA Ames Research Center (ARC), Moffett Field, Mountain View, CA (United States). Exobiology Branch; Univ. of Vienna (Austria). Dept. of Microbial Ecology
- Stanford Univ., CA (United States). Dept. of Chemical Engineering and Civil and Environmental Engineering
- USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
- NASA Ames Research Center (ARC), Moffett Field, Mountain View, CA (United States). Exobiology Branch
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences Directorate
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Earth Sciences Division
Photosynthetic microbial mats possess extraordinary phylogenetic and functional diversity that makes linking specific pathways with individual microbial populations a daunting task. Close metabolic and spatial relationships between Cyanobacteria and Chloroflexi have previously been observed in diverse microbial mats. Here in this paper, we report that an expressed metabolic pathway for the anoxic catabolism of photosynthate involving Cyanobacteria and Chloroflexi in microbial mats can be reconstructed through metatranscriptomic sequencing of mats collected at Elkhorn Slough, Monterey Bay, CA, USA. In this reconstruction, Microcoleus spp., the most abundant cyanobacterial group in the mats, ferment photosynthate to organic acids, CO2 and H2 through multiple pathways, and an uncultivated lineage of the Chloroflexi take up these organic acids to store carbon as polyhydroxyalkanoates. The metabolic reconstruction is consistent with metabolite measurements and single cell microbial imaging with fluorescence in situ hybridization and NanoSIMS.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- German Research Foundation (DFG); USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-05CH11231; AC52-07NA27344
- OSTI ID:
- 1396201
- Alternate ID(s):
- OSTI ID: 1153575
- Report Number(s):
- LLNL-JRNL--582972
- Journal Information:
- The ISME Journal, Journal Name: The ISME Journal Journal Issue: 4 Vol. 7; ISSN 1751-7362
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Metagenomics reveals niche partitioning within the phototrophic zone of a microbial mat
Identification of a novel cyanobacterial group as active diazotrophs in a coastal microbial mat using NanoSIMS analysis
Journal Article
·
Mon Sep 10 20:00:00 EDT 2018
· PLoS ONE
·
OSTI ID:1477376
Identification of a novel cyanobacterial group as active diazotrophs in a coastal microbial mat using NanoSIMS analysis
Journal Article
·
Wed Jan 11 19:00:00 EST 2012
· The ISME Journal
·
OSTI ID:1396226