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Title: Metagenomics-Guided Survey, Isolation, and Characterization of Uranium Resistant Microbiota from the Savannah River Site, USA

Abstract

Despite the recent advancements in culturomics, isolation of the majority of environmental microbiota performing critical ecosystem services, such as bioremediation of contaminants, remains elusive. Towards this end, we conducted a metagenomics-guided comparative assessment of soil microbial diversity and functions present in uraniferous soils relative to those that grew in diffusion chambers (DC) or microbial traps (MT), followed by isolation of uranium (U) resistant microbiota. Shotgun metagenomic analysis performed on the soils used to establish the DC/MT chambers revealed Proteobacterial phyla and Burkholderia genus to be the most abundant among bacteria. The chamber-associated growth conditions further increased their abundances relative to the soils. Ascomycota was the most abundant fungal phylum in the chambers relative to the soils, with Penicillium as the most dominant genus. Metagenomics-based taxonomic findings completely mirrored the taxonomic composition of the retrieved isolates such that the U-resistant bacteria and fungi mainly belonged to Burkholderia and Penicillium species, thus confirming that the chambers facilitated proliferation and subsequent isolation of specific microbiota with environmentally relevant functions. Furthermore, shotgun metagenomic analysis also revealed that the gene classes for carbohydrate metabolism, virulence, and respiration predominated with functions related to stress response, membrane transport, and metabolism of aromatic compounds were also identified, albeitmore » at lower levels. Of major note was the successful isolation of a potentially novel Penicillium species using the MT approach, as evidenced by whole genome sequence analysis and comparative genomic analysis, thus enhancing our overall understanding on the uranium cycling microbiota within the tested uraniferous soils.« less

Authors:
; ; ; ; ; ; ; ; ORCiD logo; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1509747
Grant/Contract Number:  
AC09-08SR22470
Resource Type:
Published Article
Journal Name:
Genes
Additional Journal Information:
Journal Name: Genes Journal Volume: 10 Journal Issue: 5; Journal ID: ISSN 2073-4425
Publisher:
MDPI AG
Country of Publication:
Switzerland
Language:
English

Citation Formats

Jaswal,, Pathak,, III,, III,, Seaman,, Stothard,, Krivushin,, Blom,, Rupp,, and Chauhan,. Metagenomics-Guided Survey, Isolation, and Characterization of Uranium Resistant Microbiota from the Savannah River Site, USA. Switzerland: N. p., 2019. Web. doi:10.3390/genes10050325.
Jaswal,, Pathak,, III,, III,, Seaman,, Stothard,, Krivushin,, Blom,, Rupp,, & Chauhan,. Metagenomics-Guided Survey, Isolation, and Characterization of Uranium Resistant Microbiota from the Savannah River Site, USA. Switzerland. https://doi.org/10.3390/genes10050325
Jaswal,, Pathak,, III,, III,, Seaman,, Stothard,, Krivushin,, Blom,, Rupp,, and Chauhan,. Sun . "Metagenomics-Guided Survey, Isolation, and Characterization of Uranium Resistant Microbiota from the Savannah River Site, USA". Switzerland. https://doi.org/10.3390/genes10050325.
@article{osti_1509747,
title = {Metagenomics-Guided Survey, Isolation, and Characterization of Uranium Resistant Microbiota from the Savannah River Site, USA},
author = {Jaswal, and Pathak, and III, and III, and Seaman, and Stothard, and Krivushin, and Blom, and Rupp, and Chauhan,},
abstractNote = {Despite the recent advancements in culturomics, isolation of the majority of environmental microbiota performing critical ecosystem services, such as bioremediation of contaminants, remains elusive. Towards this end, we conducted a metagenomics-guided comparative assessment of soil microbial diversity and functions present in uraniferous soils relative to those that grew in diffusion chambers (DC) or microbial traps (MT), followed by isolation of uranium (U) resistant microbiota. Shotgun metagenomic analysis performed on the soils used to establish the DC/MT chambers revealed Proteobacterial phyla and Burkholderia genus to be the most abundant among bacteria. The chamber-associated growth conditions further increased their abundances relative to the soils. Ascomycota was the most abundant fungal phylum in the chambers relative to the soils, with Penicillium as the most dominant genus. Metagenomics-based taxonomic findings completely mirrored the taxonomic composition of the retrieved isolates such that the U-resistant bacteria and fungi mainly belonged to Burkholderia and Penicillium species, thus confirming that the chambers facilitated proliferation and subsequent isolation of specific microbiota with environmentally relevant functions. Furthermore, shotgun metagenomic analysis also revealed that the gene classes for carbohydrate metabolism, virulence, and respiration predominated with functions related to stress response, membrane transport, and metabolism of aromatic compounds were also identified, albeit at lower levels. Of major note was the successful isolation of a potentially novel Penicillium species using the MT approach, as evidenced by whole genome sequence analysis and comparative genomic analysis, thus enhancing our overall understanding on the uranium cycling microbiota within the tested uraniferous soils.},
doi = {10.3390/genes10050325},
journal = {Genes},
number = 5,
volume = 10,
place = {Switzerland},
year = {Sun Apr 28 00:00:00 EDT 2019},
month = {Sun Apr 28 00:00:00 EDT 2019}
}

Journal Article:
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https://doi.org/10.3390/genes10050325

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Cited by: 14 works
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