The Geobacillus pan-genome: implications for the evolution of the genus

The genus Geobacillus is comprised of a diverse group of spore-forming Gram-positive thermophilic bacterial species and is well known for both its ecological diversity and as a source of novel thermostable enzymes. Although the mechanisms underlying the thermophilicity of the organism and the thermo...

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Main Authors: Oliver Keoagile Ignatius Bezuidt, Rian ePierneef, Amine eGomri, Fiyin eAdesioye, Thulani Peter Makhalanyane, Karima eKharroub, Don A Cowan
Format: Article
Language:English
Published: Frontiers Media S.A. 2016-05-01
Series:Frontiers in Microbiology
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fmicb.2016.00723/full
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author Oliver Keoagile Ignatius Bezuidt
Rian ePierneef
Amine eGomri
Fiyin eAdesioye
Thulani Peter Makhalanyane
Karima eKharroub
Don A Cowan
author_facet Oliver Keoagile Ignatius Bezuidt
Rian ePierneef
Amine eGomri
Fiyin eAdesioye
Thulani Peter Makhalanyane
Karima eKharroub
Don A Cowan
author_sort Oliver Keoagile Ignatius Bezuidt
collection DOAJ
description The genus Geobacillus is comprised of a diverse group of spore-forming Gram-positive thermophilic bacterial species and is well known for both its ecological diversity and as a source of novel thermostable enzymes. Although the mechanisms underlying the thermophilicity of the organism and the thermostability of its macromolecules are reasonably well understood, relatively little is known of the evolutionary mechanisms, which underlie the structural and functional properties of members of this genus. In this study, we have compared 29 Geobacillus genomes, with a specific focus on the elements, which comprise the conserved core and flexible genomes. Based on comparisons of conserved core and flexible genomes, we present evidence of habitat delineation with specific Geobacillus genomes linked to specific niches. Interestingly, our analysis has shown that horizontal gene transfer is a major factor deriving the evolution of Geobacillus from Bacillus, with genetic contributions from other phylogenetically distant taxa.
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spelling doaj.art-4b656befec8b41acade7d139e811d6562022-12-21T18:50:34ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2016-05-01710.3389/fmicb.2016.00723197964The Geobacillus pan-genome: implications for the evolution of the genusOliver Keoagile Ignatius Bezuidt0Rian ePierneef1Amine eGomri2Fiyin eAdesioye3Thulani Peter Makhalanyane4Karima eKharroub5Don A Cowan6University of PretoriaUniversity of PretoriaUniversité Frères Mentouri ConstantineUniversity of PretoriaUniversity of PretoriaUniversité Frères Mentouri ConstantineUniversity of PretoriaThe genus Geobacillus is comprised of a diverse group of spore-forming Gram-positive thermophilic bacterial species and is well known for both its ecological diversity and as a source of novel thermostable enzymes. Although the mechanisms underlying the thermophilicity of the organism and the thermostability of its macromolecules are reasonably well understood, relatively little is known of the evolutionary mechanisms, which underlie the structural and functional properties of members of this genus. In this study, we have compared 29 Geobacillus genomes, with a specific focus on the elements, which comprise the conserved core and flexible genomes. Based on comparisons of conserved core and flexible genomes, we present evidence of habitat delineation with specific Geobacillus genomes linked to specific niches. Interestingly, our analysis has shown that horizontal gene transfer is a major factor deriving the evolution of Geobacillus from Bacillus, with genetic contributions from other phylogenetically distant taxa.http://journal.frontiersin.org/Journal/10.3389/fmicb.2016.00723/fullGeobacillushorizontal gene transferpan-genomeSoft coreConserved coreflexible genomes
spellingShingle Oliver Keoagile Ignatius Bezuidt
Rian ePierneef
Amine eGomri
Fiyin eAdesioye
Thulani Peter Makhalanyane
Karima eKharroub
Don A Cowan
The Geobacillus pan-genome: implications for the evolution of the genus
Frontiers in Microbiology
Geobacillus
horizontal gene transfer
pan-genome
Soft core
Conserved core
flexible genomes
title The Geobacillus pan-genome: implications for the evolution of the genus
title_full The Geobacillus pan-genome: implications for the evolution of the genus
title_fullStr The Geobacillus pan-genome: implications for the evolution of the genus
title_full_unstemmed The Geobacillus pan-genome: implications for the evolution of the genus
title_short The Geobacillus pan-genome: implications for the evolution of the genus
title_sort geobacillus pan genome implications for the evolution of the genus
topic Geobacillus
horizontal gene transfer
pan-genome
Soft core
Conserved core
flexible genomes
url http://journal.frontiersin.org/Journal/10.3389/fmicb.2016.00723/full
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