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Diversity of Pseudomonas Genomes, Including Populus-Associated Isolates, as Revealed by Comparative Genome Analysis.

Identifieur interne : 001918 ( Main/Exploration ); précédent : 001917; suivant : 001919

Diversity of Pseudomonas Genomes, Including Populus-Associated Isolates, as Revealed by Comparative Genome Analysis.

Auteurs : Se-Ran Jun [États-Unis] ; Trudy M. Wassenaar [Allemagne] ; Intawat Nookaew [États-Unis] ; Loren Hauser [États-Unis] ; Visanu Wanchai [États-Unis] ; Miriam Land [États-Unis] ; Collin M. Timm [États-Unis] ; Tse-Yuan S. Lu [États-Unis] ; Christopher W. Schadt [États-Unis] ; Mitchel J. Doktycz [États-Unis] ; Dale A. Pelletier [États-Unis] ; David W. Ussery [Pays-Bas]

Source :

RBID : pubmed:26519390

Descripteurs français

English descriptors

Abstract

The Pseudomonas genus contains a metabolically versatile group of organisms that are known to occupy numerous ecological niches, including the rhizosphere and endosphere of many plants. Their diversity influences the phylogenetic diversity and heterogeneity of these communities. On the basis of average amino acid identity, comparative genome analysis of >1,000 Pseudomonas genomes, including 21 Pseudomonas strains isolated from the roots of native Populus deltoides (eastern cottonwood) trees resulted in consistent and robust genomic clusters with phylogenetic homogeneity. All Pseudomonas aeruginosa genomes clustered together, and these were clearly distinct from other Pseudomonas species groups on the basis of pangenome and core genome analyses. In contrast, the genomes of Pseudomonas fluorescens were organized into 20 distinct genomic clusters, representing enormous diversity and heterogeneity. Most of our 21 Populus-associated isolates formed three distinct subgroups within the major P. fluorescens group, supported by pathway profile analysis, while two isolates were more closely related to Pseudomonas chlororaphis and Pseudomonas putida. Genes specific to Populus-associated subgroups were identified. Genes specific to subgroup 1 include several sensory systems that act in two-component signal transduction, a TonB-dependent receptor, and a phosphorelay sensor. Genes specific to subgroup 2 contain hypothetical genes, and genes specific to subgroup 3 were annotated with hydrolase activity. This study justifies the need to sequence multiple isolates, especially from P. fluorescens, which displays the most genetic variation, in order to study functional capabilities from a pangenomic perspective. This information will prove useful when choosing Pseudomonas strains for use to promote growth and increase disease resistance in plants.

DOI: 10.1128/AEM.02612-15
PubMed: 26519390
PubMed Central: PMC4702629


Affiliations:


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Le document en format XML

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<div type="abstract" xml:lang="en">The Pseudomonas genus contains a metabolically versatile group of organisms that are known to occupy numerous ecological niches, including the rhizosphere and endosphere of many plants. Their diversity influences the phylogenetic diversity and heterogeneity of these communities. On the basis of average amino acid identity, comparative genome analysis of >1,000 Pseudomonas genomes, including 21 Pseudomonas strains isolated from the roots of native Populus deltoides (eastern cottonwood) trees resulted in consistent and robust genomic clusters with phylogenetic homogeneity. All Pseudomonas aeruginosa genomes clustered together, and these were clearly distinct from other Pseudomonas species groups on the basis of pangenome and core genome analyses. In contrast, the genomes of Pseudomonas fluorescens were organized into 20 distinct genomic clusters, representing enormous diversity and heterogeneity. Most of our 21 Populus-associated isolates formed three distinct subgroups within the major P. fluorescens group, supported by pathway profile analysis, while two isolates were more closely related to Pseudomonas chlororaphis and Pseudomonas putida. Genes specific to Populus-associated subgroups were identified. Genes specific to subgroup 1 include several sensory systems that act in two-component signal transduction, a TonB-dependent receptor, and a phosphorelay sensor. Genes specific to subgroup 2 contain hypothetical genes, and genes specific to subgroup 3 were annotated with hydrolase activity. This study justifies the need to sequence multiple isolates, especially from P. fluorescens, which displays the most genetic variation, in order to study functional capabilities from a pangenomic perspective. This information will prove useful when choosing Pseudomonas strains for use to promote growth and increase disease resistance in plants. </div>
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<Abstract>
<AbstractText>The Pseudomonas genus contains a metabolically versatile group of organisms that are known to occupy numerous ecological niches, including the rhizosphere and endosphere of many plants. Their diversity influences the phylogenetic diversity and heterogeneity of these communities. On the basis of average amino acid identity, comparative genome analysis of >1,000 Pseudomonas genomes, including 21 Pseudomonas strains isolated from the roots of native Populus deltoides (eastern cottonwood) trees resulted in consistent and robust genomic clusters with phylogenetic homogeneity. All Pseudomonas aeruginosa genomes clustered together, and these were clearly distinct from other Pseudomonas species groups on the basis of pangenome and core genome analyses. In contrast, the genomes of Pseudomonas fluorescens were organized into 20 distinct genomic clusters, representing enormous diversity and heterogeneity. Most of our 21 Populus-associated isolates formed three distinct subgroups within the major P. fluorescens group, supported by pathway profile analysis, while two isolates were more closely related to Pseudomonas chlororaphis and Pseudomonas putida. Genes specific to Populus-associated subgroups were identified. Genes specific to subgroup 1 include several sensory systems that act in two-component signal transduction, a TonB-dependent receptor, and a phosphorelay sensor. Genes specific to subgroup 2 contain hypothetical genes, and genes specific to subgroup 3 were annotated with hydrolase activity. This study justifies the need to sequence multiple isolates, especially from P. fluorescens, which displays the most genetic variation, in order to study functional capabilities from a pangenomic perspective. This information will prove useful when choosing Pseudomonas strains for use to promote growth and increase disease resistance in plants. </AbstractText>
<CopyrightInformation>Copyright © 2015 Jun et al.</CopyrightInformation>
</Abstract>
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<Author ValidYN="Y">
<LastName>Jun</LastName>
<ForeName>Se-Ran</ForeName>
<Initials>SR</Initials>
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<Affiliation>Joint Institute for Computational Sciences, University of Tennessee, Knoxville, Tennessee, USA.</Affiliation>
</AffiliationInfo>
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<Author ValidYN="Y">
<LastName>Wassenaar</LastName>
<ForeName>Trudy M</ForeName>
<Initials>TM</Initials>
<AffiliationInfo>
<Affiliation>Molecular Microbiology and Genomics Consultants, Zotzenheim, Germany.</Affiliation>
</AffiliationInfo>
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<LastName>Nookaew</LastName>
<ForeName>Intawat</ForeName>
<Initials>I</Initials>
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<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Hauser</LastName>
<ForeName>Loren</ForeName>
<Initials>L</Initials>
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<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA.</Affiliation>
</AffiliationInfo>
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<LastName>Wanchai</LastName>
<ForeName>Visanu</ForeName>
<Initials>V</Initials>
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<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Land</LastName>
<ForeName>Miriam</ForeName>
<Initials>M</Initials>
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<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA.</Affiliation>
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<LastName>Timm</LastName>
<ForeName>Collin M</ForeName>
<Initials>CM</Initials>
<AffiliationInfo>
<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA.</Affiliation>
</AffiliationInfo>
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<LastName>Lu</LastName>
<ForeName>Tse-Yuan S</ForeName>
<Initials>TY</Initials>
<AffiliationInfo>
<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Schadt</LastName>
<ForeName>Christopher W</ForeName>
<Initials>CW</Initials>
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<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Doktycz</LastName>
<ForeName>Mitchel J</ForeName>
<Initials>MJ</Initials>
<AffiliationInfo>
<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Pelletier</LastName>
<ForeName>Dale A</ForeName>
<Initials>DA</Initials>
<AffiliationInfo>
<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Ussery</LastName>
<ForeName>David W</ForeName>
<Initials>DW</Initials>
<Identifier Source="ORCID">http://orcid.org/0000-0003-3632-5512</Identifier>
<AffiliationInfo>
<Affiliation>Biosciences Division, Oak Ridge Laboratory, Oak Ridge, Tennessee, USA usserydw@ornl.gov.</Affiliation>
</AffiliationInfo>
</Author>
</AuthorList>
<Language>eng</Language>
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<PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType>
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<Year>2015</Year>
<Month>10</Month>
<Day>30</Day>
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<MeshHeading>
<DescriptorName UI="D055028" MajorTopicYN="N">Comparative Genomic Hybridization</DescriptorName>
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<MeshHeading>
<DescriptorName UI="D014644" MajorTopicYN="Y">Genetic Variation</DescriptorName>
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<MeshHeading>
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<QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName>
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<DescriptorName UI="D011551" MajorTopicYN="N">Pseudomonas fluorescens</DescriptorName>
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<DescriptorName UI="D016958" MajorTopicYN="N">Pseudomonas putida</DescriptorName>
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<DescriptorName UI="D058441" MajorTopicYN="N">Rhizosphere</DescriptorName>
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