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Title: Community Structure and Function of High-Temperature Chlorophototrophic Microbial Mats Inhabiting Diverse Geothermal Environments

Abstract

Six phototrophic microbial mat communities from different geothermal springs (YNP) were studied using metagenome sequencing and geochemical analyses. The primary goals of this work were to determine differences in community composition of high-temperature phototrophic mats distributed across the Yellowstone geothermal ecosystem, and to identify metabolic attributes of predominant organisms present in these communities that may correlate with environmental attributes important in niche differentiation. Random shotgun metagenome sequences from six phototrophic communities (average ~53 Mbp/site) were subjected to multiple taxonomic, phylogenetic, and functional analyses. All methods, including G + C content distribution, MEGAN analyses, and oligonucleotide frequency based clustering, provided strong support for the dominant community members present in each site. Cyanobacteria were only observed in non-sulfidic sites; de novo assemblies were obtained for Synechococcus-like populations at Chocolate Pots (CP_7) and Fischerella-like populations at White Creek (WC_6). Chloroflexi-like sequences (esp. Roseiflexus and/or Chloroflexus spp.) were observed in all six samples and contained genes involved in bacteriochlorophyll biosynthesis and the 3-hydroxypropionate carbon fixation pathway. Other major sequence assemblies were obtained for a Chlorobiales population from CP_7 (proposed family Thermochlorobacteriaceae), and an anoxygenic, sulfur-oxidizing Thermochromatium-like (Gamma-proteobacteria) population from Bath Lake Vista Annex (BLVA_20). Additional sequence coverage is necessary to establish more complete assembliesmore » of other novel bacteria in these sites (e.g., Bacteroidetes and Firmicutes); however, current assemblies suggested that several of these organisms play important roles in heterotrophic and fermentative metabolisms. Definitive linkages were established between several of the dominant phylotypes present in these habitats and important functional processes such as photosynthesis, carbon fixation, sulfur oxidation, and fermentation.« less

Authors:
 [1];  [1];  [2];  [1];  [3];  [4];  [5];  [1];  [6];  [7];  [8]
  1. Montana State Univ., Bozeman, MT (United States). Dept. of Land Resources and Environmental Sciences; Montana State Univ., Bozeman, MT (United States). Thermal Biology Inst.
  2. Technical Univ. of Denmark, Horsholm (Denmark). Novo Nordisk Foundation Center for Biosustainability
  3. Indiana Univ., Bloomington, IN (United States). Center for Genomics and Bioinformatics
  4. USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
  5. Search for Extraterrestrial Intelligence Inst., Mountain View, CA (United States); NASA Ames Research Center (ARC), Moffett Field, Mountain View, CA (United States)
  6. Western Oregon Univ., Monmouth, OR (United States)
  7. Pennsylvania State Univ., University Park, PA (United States). Dept. of Biochemistry and Molecular Biology; Montana State Univ., Bozeman, MT (United States). Dept. of Chemistry and Biochemistry
  8. Univ. of Montana, Missoula, MT (United States). Dept. of Biological Sciences
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Earth and Environmental Systems Science Division
OSTI Identifier:
1628088
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Frontiers in Microbiology
Additional Journal Information:
Journal Volume: 4; Journal ID: ISSN 1664-302X
Publisher:
Frontiers Research Foundation
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 59 BASIC BIOLOGICAL SCIENCES; Microbiology; microbial mats; microbial interactions; phototrophic bacteria; functional genomics; thermophilic bacteria

Citation Formats

Klatt, Christian G., Inskeep, William P., Herrgard, Markus J., Jay, Zackary J., Rusch, Douglas B.,  Tringe, Susannah G., Niki Parenteau, M., Ward, David M., Boomer, Sarah M., Bryant, Donald A., and  Miller, Scott R. Community Structure and Function of High-Temperature Chlorophototrophic Microbial Mats Inhabiting Diverse Geothermal Environments. United States: N. p., 2013. Web. doi:10.3389/fmicb.2013.00106.
Klatt, Christian G., Inskeep, William P., Herrgard, Markus J., Jay, Zackary J., Rusch, Douglas B.,  Tringe, Susannah G., Niki Parenteau, M., Ward, David M., Boomer, Sarah M., Bryant, Donald A., &  Miller, Scott R. Community Structure and Function of High-Temperature Chlorophototrophic Microbial Mats Inhabiting Diverse Geothermal Environments. United States. https://doi.org/10.3389/fmicb.2013.00106
Klatt, Christian G., Inskeep, William P., Herrgard, Markus J., Jay, Zackary J., Rusch, Douglas B.,  Tringe, Susannah G., Niki Parenteau, M., Ward, David M., Boomer, Sarah M., Bryant, Donald A., and  Miller, Scott R. Tue . "Community Structure and Function of High-Temperature Chlorophototrophic Microbial Mats Inhabiting Diverse Geothermal Environments". United States. https://doi.org/10.3389/fmicb.2013.00106. https://www.osti.gov/servlets/purl/1628088.
@article{osti_1628088,
title = {Community Structure and Function of High-Temperature Chlorophototrophic Microbial Mats Inhabiting Diverse Geothermal Environments},
author = {Klatt, Christian G. and Inskeep, William P. and Herrgard, Markus J. and Jay, Zackary J. and Rusch, Douglas B. and  Tringe, Susannah G. and Niki Parenteau, M. and Ward, David M. and Boomer, Sarah M. and Bryant, Donald A. and  Miller, Scott R.},
abstractNote = {Six phototrophic microbial mat communities from different geothermal springs (YNP) were studied using metagenome sequencing and geochemical analyses. The primary goals of this work were to determine differences in community composition of high-temperature phototrophic mats distributed across the Yellowstone geothermal ecosystem, and to identify metabolic attributes of predominant organisms present in these communities that may correlate with environmental attributes important in niche differentiation. Random shotgun metagenome sequences from six phototrophic communities (average ~53 Mbp/site) were subjected to multiple taxonomic, phylogenetic, and functional analyses. All methods, including G + C content distribution, MEGAN analyses, and oligonucleotide frequency based clustering, provided strong support for the dominant community members present in each site. Cyanobacteria were only observed in non-sulfidic sites; de novo assemblies were obtained for Synechococcus-like populations at Chocolate Pots (CP_7) and Fischerella-like populations at White Creek (WC_6). Chloroflexi-like sequences (esp. Roseiflexus and/or Chloroflexus spp.) were observed in all six samples and contained genes involved in bacteriochlorophyll biosynthesis and the 3-hydroxypropionate carbon fixation pathway. Other major sequence assemblies were obtained for a Chlorobiales population from CP_7 (proposed family Thermochlorobacteriaceae), and an anoxygenic, sulfur-oxidizing Thermochromatium-like (Gamma-proteobacteria) population from Bath Lake Vista Annex (BLVA_20). Additional sequence coverage is necessary to establish more complete assemblies of other novel bacteria in these sites (e.g., Bacteroidetes and Firmicutes); however, current assemblies suggested that several of these organisms play important roles in heterotrophic and fermentative metabolisms. Definitive linkages were established between several of the dominant phylotypes present in these habitats and important functional processes such as photosynthesis, carbon fixation, sulfur oxidation, and fermentation.},
doi = {10.3389/fmicb.2013.00106},
journal = {Frontiers in Microbiology},
number = ,
volume = 4,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2013},
month = {Tue Jan 01 00:00:00 EST 2013}
}

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