DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Small and mighty: adaptation of superphylum Patescibacteria to groundwater environment drives their genome simplicity

Journal Article · · Microbiome
 [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [3];  [4];  [5];  [4];  [5];  [4];  [5];  [6];  [7];  [8];  [9] more »;  [2];  [10] « less
  1. Univ. of Oklahoma, Norman, OK (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Tsinghua Univ., Beijing (China)
  4. Univ. of Tennessee, Knoxville, TN (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  7. Montana State Univ., Bozeman, MT (United States)
  8. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  9. Univ. of Washington, Seattle, WA (United States)
  10. Univ. of Oklahoma, Norman, OK (United States); Tsinghua Univ., Beijing (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

The newly defined superphylum Patescibacteria such as Parcubacteria (OD1) and Microgenomates (OP11) has been found to be prevalent in groundwater, sediment, lake, and other aquifer environments. Recently increasing attention has been paid to this diverse superphylum including > 20 candidate phyla (a large part of the candidate phylum radiation, CPR) because it refreshed our view of the tree of life. However, adaptive traits contributing to its prevalence are still not well known.ResultsHere, we investigated the genomic features and metabolic pathways of Patescibacteria in groundwater through genome-resolved metagenomics analysis of >600 Gbp sequence data. We observed that, while the members of Patescibacteria have reduced genomes (~ 1 Mbp) exclusively, functions essential to growth and reproduction such as genetic information processing were retained. Surprisingly, they have sharply reduced redundant and nonessential functions, including specific metabolic activities and stress response systems. The Patescibacteria have ultra-small cells and simplified membrane structures, including flagellar assembly, transporters, and two-component systems. Despite the lack of CRISPR viral defense, the bacteria may evade predation through deletion of common membrane phage receptors and other alternative strategies, which may explain the low representation of prophage proteins in their genomes and lack of CRISPR. By establishing the linkages between bacterial features and the groundwater environmental conditions, our results provide important insights into the functions and evolution of this CPR group.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231; AC05-00OR22725
OSTI ID:
1631654
Journal Information:
Microbiome, Journal Name: Microbiome Journal Issue: 1 Vol. 8; ISSN 2049-2618
Publisher:
BioMed CentralCopyright Statement
Country of Publication:
United States
Language:
English

References (56)

Using QIIME to Analyze 16S rRNA Gene Sequences from Microbial Communities journal December 2011
Major New Microbial Groups Expand Diversity and Alter our Understanding of the Tree of Life journal March 2018
A national reconnaissance of pharmaceuticals and other organic wastewater contaminants in the United States — I) Groundwater journal September 2008
“Candidatus Sonnebornia yantaiensis”, a member of candidate division OD1, as intracellular bacteria of the ciliated protist Paramecium bursaria (Ciliophora, Oligohymenophorea) journal February 2014
Insights into the phylogeny and coding potential of microbial dark matter journal July 2013
Unusual biology across a group comprising more than 15% of domain Bacteria journal June 2015
A standardized bacterial taxonomy based on genome phylogeny substantially revises the tree of life journal August 2018
Major bacterial lineages are essentially devoid of CRISPR-Cas viral defence systems journal February 2016
Thousands of microbial genomes shed light on interconnected biogeochemical processes in an aquifer system journal October 2016
Diverse uncultivated ultra-small bacterial cells in groundwater journal February 2015
Fast gapped-read alignment with Bowtie 2 journal March 2012
UPARSE: highly accurate OTU sequences from microbial amplicon reads journal August 2013
Fast and sensitive protein alignment using DIAMOND journal November 2014
A new view of the tree of life journal April 2016
Phylogenetic clustering of small low nucleic acid-content bacteria across diverse freshwater ecosystems journal February 2018
Evolutionary stasis of a deep subsurface microbial lineage journal April 2021
Analysis of immune, microbiota and metabolome maturation in infants in a clinical trial of Lactobacillus paracasei CBA L74-fermented formula journal June 2020
Differential depth distribution of microbial function and putative symbionts through sediment-hosted aquifers in the deep terrestrial subsurface journal January 2018
Biosynthetic capacity, metabolic variety and unusual biology in the CPR and DPANN radiations journal September 2018
An SHR–SCR module specifies legume cortical cell fate to enable nodulation journal December 2020
Oxygen supply and the adaptations of animals in groundwater journal February 1999
Scaling of number, size, and metabolic rate of cells with body size in mammals journal March 2007
Improvement of Phylogenies after Removing Divergent and Ambiguously Aligned Blocks from Protein Sequence Alignments journal August 2007
Cd-hit: a fast program for clustering and comparing large sets of protein or nucleotide sequences journal May 2006
The Sequence Alignment/Map format and SAMtools journal June 2009
IDBA-UD: a de novo assembler for single-cell and metagenomic sequencing data with highly uneven depth journal April 2012
PEAR: a fast and accurate Illumina Paired-End reAd mergeR journal October 2013
RAxML version 8: a tool for phylogenetic analysis and post-analysis of large phylogenies journal January 2014
Prokka: rapid prokaryotic genome annotation journal March 2014
Host receptors for bacteriophage adsorption journal January 2016
A Model of Genome Size Evolution for Prokaryotes in Stable and Fluctuating Environments journal August 2015
MEGA7: Molecular Evolutionary Genetics Analysis Version 7.0 for Bigger Datasets journal March 2016
The SILVA ribosomal RNA gene database project: improved data processing and web-based tools journal November 2012
Bacteriophage T4 Development Depends on the Physiology of its Host Escherichia Coli journal January 1997
SINTAX: a simple non-Bayesian taxonomy classifier for 16S and ITS sequences preprint September 2016
PCAP: A Whole-Genome Assembly Program journal September 2003
CheckM: assessing the quality of microbial genomes recovered from isolates, single cells, and metagenomes journal May 2015
MEGAN analysis of metagenomic data journal February 2007
Stream and Fluvial Plain Ground Water Interactions: Rescaling Hydrogeologic Thought journal May 2000
Fermentation, Hydrogen, and Sulfur Metabolism in Multiple Uncultivated Bacterial Phyla journal September 2012
Naive Bayesian Classifier for Rapid Assignment of rRNA Sequences into the New Bacterial Taxonomy journal June 2007
Evaluation and Optimization of DNA Extraction and Purification Procedures for Soil and Sediment Samples journal November 1999
The Black Queen Hypothesis: Evolution of Dependencies through Adaptive Gene Loss journal March 2012
Natural Bacterial Communities Serve as Quantitative Geochemical Biosensors journal May 2015
Draft Genome Sequence of Comamonas aquatilis Strain LK (= CSUR P6418 = CECT 9772), Isolated from the Planarian Schmidtea mediterranea journal February 2021
Prodigal: prokaryotic gene recognition and translation initiation site identification journal March 2010
Functional microbial diversity explains groundwater chemistry in a pristine aquifer journal January 2013
Phasing amplicon sequencing on Illumina Miseq for robust environmental microbial community analysis journal June 2015
Succession of endophytic fungi and arbuscular mycorrhizal fungi associated with the growth of plant and their correlation with secondary metabolites in the roots of plants journal April 2021
Polinton-like viruses are abundant in aquatic ecosystems journal January 2021
NGS QC Toolkit: A Toolkit for Quality Control of Next Generation Sequencing Data journal February 2012
Bacteriophage Receptors, Mechanisms of Phage Adsorption and Penetration into Host Cell journal January 2010
Phylogenetic clustering of small low nucleic acid-content bacteria across diverse freshwater ecosystems text January 2018
RAxML version 8: a tool for phylogenetic analysis and post-analysis of large phylogenies text January 2014
VSEARCH: a versatile open source tool for metagenomics text January 2016
MetaBAT, an efficient tool for accurately reconstructing single genomes from complex microbial communities journal January 2015

Cited By (2)