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Title: Comparative genomics reveals electron transfer and syntrophic mechanisms differentiating methanotrophic and methanogenic archaea

Abstract

The anaerobic oxidation of methane coupled to sulfate reduction is a microbially mediated process requiring a syntrophic partnership between anaerobic methanotrophic (ANME) archaea and sulfate-reducing bacteria (SRB). Based on genome taxonomy, ANME lineages are polyphyletic within the phylum Halobacterota , none of which have been isolated in pure culture. Here, we reconstruct 28 ANME genomes from environmental metagenomes and flow sorted syntrophic consortia. Together with a reanalysis of previously published datasets, these genomes enable a comparative analysis of all marine ANME clades. We review the genomic features that separate ANME from their methanogenic relatives and identify what differentiates ANME clades. Large multiheme cytochromes and bioenergetic complexes predicted to be involved in novel electron bifurcation reactions are well distributed and conserved in the ANME archaea, while significant variations in the anabolic C1 pathways exists between clades. Our analysis raises the possibility that methylotrophic methanogenesis may have evolved from a methanotrophic ancestor.

Authors:
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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); National Science Foundation (NSF)
OSTI Identifier:
1863468
Alternate Identifier(s):
OSTI ID: 1838397; OSTI ID: 1865081
Grant/Contract Number:  
AC02-05CH11231; OCE-1563702/1536405
Resource Type:
Published Article
Journal Name:
PLoS Biology (Online)
Additional Journal Information:
Journal Name: PLoS Biology (Online) Journal Volume: 20 Journal Issue: 1; Journal ID: ISSN 1545-7885
Publisher:
Public Library of Science (PLoS)
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES

Citation Formats

Chadwick, Grayson L., Skennerton, Connor T., Laso-Pérez, Rafael, Leu, Andy O., Speth, Daan R., Yu, Hang, Morgan-Lang, Connor, Hatzenpichler, Roland, Goudeau, Danielle, Malmstrom, Rex, Brazelton, William J., Woyke, Tanja, Hallam, Steven J., Tyson, Gene W., Wegener, Gunter, Boetius, Antje, Orphan, Victoria J., and Wang, ed., Fengping. Comparative genomics reveals electron transfer and syntrophic mechanisms differentiating methanotrophic and methanogenic archaea. United States: N. p., 2022. Web. doi:10.1371/journal.pbio.3001508.
Chadwick, Grayson L., Skennerton, Connor T., Laso-Pérez, Rafael, Leu, Andy O., Speth, Daan R., Yu, Hang, Morgan-Lang, Connor, Hatzenpichler, Roland, Goudeau, Danielle, Malmstrom, Rex, Brazelton, William J., Woyke, Tanja, Hallam, Steven J., Tyson, Gene W., Wegener, Gunter, Boetius, Antje, Orphan, Victoria J., & Wang, ed., Fengping. Comparative genomics reveals electron transfer and syntrophic mechanisms differentiating methanotrophic and methanogenic archaea. United States. https://doi.org/10.1371/journal.pbio.3001508
Chadwick, Grayson L., Skennerton, Connor T., Laso-Pérez, Rafael, Leu, Andy O., Speth, Daan R., Yu, Hang, Morgan-Lang, Connor, Hatzenpichler, Roland, Goudeau, Danielle, Malmstrom, Rex, Brazelton, William J., Woyke, Tanja, Hallam, Steven J., Tyson, Gene W., Wegener, Gunter, Boetius, Antje, Orphan, Victoria J., and Wang, ed., Fengping. Wed . "Comparative genomics reveals electron transfer and syntrophic mechanisms differentiating methanotrophic and methanogenic archaea". United States. https://doi.org/10.1371/journal.pbio.3001508.
@article{osti_1863468,
title = {Comparative genomics reveals electron transfer and syntrophic mechanisms differentiating methanotrophic and methanogenic archaea},
author = {Chadwick, Grayson L. and Skennerton, Connor T. and Laso-Pérez, Rafael and Leu, Andy O. and Speth, Daan R. and Yu, Hang and Morgan-Lang, Connor and Hatzenpichler, Roland and Goudeau, Danielle and Malmstrom, Rex and Brazelton, William J. and Woyke, Tanja and Hallam, Steven J. and Tyson, Gene W. and Wegener, Gunter and Boetius, Antje and Orphan, Victoria J. and Wang, ed., Fengping},
abstractNote = {The anaerobic oxidation of methane coupled to sulfate reduction is a microbially mediated process requiring a syntrophic partnership between anaerobic methanotrophic (ANME) archaea and sulfate-reducing bacteria (SRB). Based on genome taxonomy, ANME lineages are polyphyletic within the phylum Halobacterota , none of which have been isolated in pure culture. Here, we reconstruct 28 ANME genomes from environmental metagenomes and flow sorted syntrophic consortia. Together with a reanalysis of previously published datasets, these genomes enable a comparative analysis of all marine ANME clades. We review the genomic features that separate ANME from their methanogenic relatives and identify what differentiates ANME clades. Large multiheme cytochromes and bioenergetic complexes predicted to be involved in novel electron bifurcation reactions are well distributed and conserved in the ANME archaea, while significant variations in the anabolic C1 pathways exists between clades. Our analysis raises the possibility that methylotrophic methanogenesis may have evolved from a methanotrophic ancestor.},
doi = {10.1371/journal.pbio.3001508},
journal = {PLoS Biology (Online)},
number = 1,
volume = 20,
place = {United States},
year = {Wed Jan 05 00:00:00 EST 2022},
month = {Wed Jan 05 00:00:00 EST 2022}
}

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