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Title: Novel, Deep-Branching Heterotrophic Bacterial Populations Recovered from Thermal Spring Metagenomes

Abstract

Thermal spring ecosystems are a valuable resource for the discovery of novel hyperthermophilic Bacteria and Archaea, and harbor deeply-branching lineages that provide insight regarding the nature of early microbial life. We characterized bacterial populations in two circumneutral (pH ~8) Yellowstone National Park thermal (T ~80°C) spring filamentous “streamer” communities using random metagenomic DNA sequence to investigate the metabolic potential of these novel populations. Four de novo assemblies representing three abundant, deeply-branching bacterial phylotypes were recovered. Analysis of conserved phylogenetic marker genes indicated that two of the phylotypes represent separate groups of an uncharacterized phylum (for which we propose the candidate phylum name “Pyropristinus”). The third new phylotype falls within the proposed Calescamantes phylum. Metabolic reconstructions of the “Pyropristinus” and Calescamantes populations showed that these organisms appear to be chemoorganoheterotrophs and have the genomic potential for aerobic respiration and oxidative phosphorylation via archaeal-like V-type, and bacterial F-type ATPases, respectively. A survey of similar phylotypes (>97% nt identity) within 16S rRNA gene datasets suggest that the newly described organisms are restricted to terrestrial thermal springs ranging from 70 to 90°C and pH values of ~7–9. The characterization of these lineages is important for understanding the diversity of deeply-branching bacterial phyla, and theirmore » functional role in high-temperature circumneutral “streamer” communities.« less

Authors:
 [1];  [2];  [2];  [2];  [1];  [3];  [1]
  1. Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Biology
  2. Montana State Univ., Bozeman, MT (United States). Thermal Biology Inst. Dept. of Land Resources and Environmental Sciences
  3. Indiana Univ., Bloomington, IN (United States). Center for Genomics and Bioinformatics
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1628144
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Frontiers in Microbiology
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 1664-302X
Publisher:
Frontiers Research Foundation
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Microbiology; Aquificales; hot springs; Thermotogae; Calescamantes; Pyropristinus; hyperthermophiles; Yellowstone National Park

Citation Formats

Colman, Daniel R., Jay, Zackary J., Inskeep, William P., Jennings, Ryan deM., Maas, Kendra R., Rusch, Douglas B., and Takacs-Vesbach, Cristina D. Novel, Deep-Branching Heterotrophic Bacterial Populations Recovered from Thermal Spring Metagenomes. United States: N. p., 2016. Web. doi:10.3389/fmicb.2016.00304.
Colman, Daniel R., Jay, Zackary J., Inskeep, William P., Jennings, Ryan deM., Maas, Kendra R., Rusch, Douglas B., & Takacs-Vesbach, Cristina D. Novel, Deep-Branching Heterotrophic Bacterial Populations Recovered from Thermal Spring Metagenomes. United States. https://doi.org/10.3389/fmicb.2016.00304
Colman, Daniel R., Jay, Zackary J., Inskeep, William P., Jennings, Ryan deM., Maas, Kendra R., Rusch, Douglas B., and Takacs-Vesbach, Cristina D. Tue . "Novel, Deep-Branching Heterotrophic Bacterial Populations Recovered from Thermal Spring Metagenomes". United States. https://doi.org/10.3389/fmicb.2016.00304. https://www.osti.gov/servlets/purl/1628144.
@article{osti_1628144,
title = {Novel, Deep-Branching Heterotrophic Bacterial Populations Recovered from Thermal Spring Metagenomes},
author = {Colman, Daniel R. and Jay, Zackary J. and Inskeep, William P. and Jennings, Ryan deM. and Maas, Kendra R. and Rusch, Douglas B. and Takacs-Vesbach, Cristina D.},
abstractNote = {Thermal spring ecosystems are a valuable resource for the discovery of novel hyperthermophilic Bacteria and Archaea, and harbor deeply-branching lineages that provide insight regarding the nature of early microbial life. We characterized bacterial populations in two circumneutral (pH ~8) Yellowstone National Park thermal (T ~80°C) spring filamentous “streamer” communities using random metagenomic DNA sequence to investigate the metabolic potential of these novel populations. Four de novo assemblies representing three abundant, deeply-branching bacterial phylotypes were recovered. Analysis of conserved phylogenetic marker genes indicated that two of the phylotypes represent separate groups of an uncharacterized phylum (for which we propose the candidate phylum name “Pyropristinus”). The third new phylotype falls within the proposed Calescamantes phylum. Metabolic reconstructions of the “Pyropristinus” and Calescamantes populations showed that these organisms appear to be chemoorganoheterotrophs and have the genomic potential for aerobic respiration and oxidative phosphorylation via archaeal-like V-type, and bacterial F-type ATPases, respectively. A survey of similar phylotypes (>97% nt identity) within 16S rRNA gene datasets suggest that the newly described organisms are restricted to terrestrial thermal springs ranging from 70 to 90°C and pH values of ~7–9. The characterization of these lineages is important for understanding the diversity of deeply-branching bacterial phyla, and their functional role in high-temperature circumneutral “streamer” communities.},
doi = {10.3389/fmicb.2016.00304},
journal = {Frontiers in Microbiology},
number = ,
volume = 7,
place = {United States},
year = {Tue Mar 15 00:00:00 EDT 2016},
month = {Tue Mar 15 00:00:00 EDT 2016}
}

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Works referencing / citing this record:

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