Use of whole genome sequences to develop a molecular phylogenetic framework for Rhodococcus fascians and the Rhodococcus genus

The accurate diagnosis of diseases caused by pathogenic bacteria requires a stable species classification. Rhodococcus fascians is the only documented member of its ill-defined genus that is capable of causing disease on a wide range of agriculturally important plants. Comparisons of genome sequence...

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Main Authors: Allison L. Creason, Edward W. Davis, Melodie L. Putnam, Olivier M. Vandeputte, Jeff H Chang
Format: Article
Language:English
Published: Frontiers Media S.A. 2014-08-01
Series:Frontiers in Plant Science
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00406/full
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author Allison L. Creason
Edward W. Davis
Melodie L. Putnam
Olivier M. Vandeputte
Jeff H Chang
author_facet Allison L. Creason
Edward W. Davis
Melodie L. Putnam
Olivier M. Vandeputte
Jeff H Chang
author_sort Allison L. Creason
collection DOAJ
description The accurate diagnosis of diseases caused by pathogenic bacteria requires a stable species classification. Rhodococcus fascians is the only documented member of its ill-defined genus that is capable of causing disease on a wide range of agriculturally important plants. Comparisons of genome sequences generated from isolates of Rhodococcus associated with diseased plants revealed a level of genetic diversity consistent with them representing multiple species. To test this, we generated a tree based on more than 1700 homologous sequences from plant-associated isolates of Rhodococcus, and obtained support from additional approaches that measure and cluster based on genome similarities. Results were consistent in supporting the definition of new Rhodococcus species within clades containing phytopathogenic members. We also used the genome sequences, along with other rhodococcal genome sequences to construct a molecular phylogenetic tree as a framework for resolving the Rhodococcus genus. Results indicated that Rhodococcus has the potential for having 20 species and also confirmed a need to revisit the taxonomic groupings within Rhodococcus.
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spelling doaj.art-1777634a47c9435980fc38286c23b3382022-12-21T23:34:12ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2014-08-01510.3389/fpls.2014.00406103878Use of whole genome sequences to develop a molecular phylogenetic framework for Rhodococcus fascians and the Rhodococcus genusAllison L. Creason0Edward W. Davis1Melodie L. Putnam2Olivier M. Vandeputte3Jeff H Chang4Oregon State UniversityOregon State UniversityOregon State UniversityUniversite Libre de BruxellesOregon State UniversityThe accurate diagnosis of diseases caused by pathogenic bacteria requires a stable species classification. Rhodococcus fascians is the only documented member of its ill-defined genus that is capable of causing disease on a wide range of agriculturally important plants. Comparisons of genome sequences generated from isolates of Rhodococcus associated with diseased plants revealed a level of genetic diversity consistent with them representing multiple species. To test this, we generated a tree based on more than 1700 homologous sequences from plant-associated isolates of Rhodococcus, and obtained support from additional approaches that measure and cluster based on genome similarities. Results were consistent in supporting the definition of new Rhodococcus species within clades containing phytopathogenic members. We also used the genome sequences, along with other rhodococcal genome sequences to construct a molecular phylogenetic tree as a framework for resolving the Rhodococcus genus. Results indicated that Rhodococcus has the potential for having 20 species and also confirmed a need to revisit the taxonomic groupings within Rhodococcus.http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00406/fullPlant PathogenGram-positiveprokaryotic taxonomyAverage nucleotide identityleafy gall
spellingShingle Allison L. Creason
Edward W. Davis
Melodie L. Putnam
Olivier M. Vandeputte
Jeff H Chang
Use of whole genome sequences to develop a molecular phylogenetic framework for Rhodococcus fascians and the Rhodococcus genus
Frontiers in Plant Science
Plant Pathogen
Gram-positive
prokaryotic taxonomy
Average nucleotide identity
leafy gall
title Use of whole genome sequences to develop a molecular phylogenetic framework for Rhodococcus fascians and the Rhodococcus genus
title_full Use of whole genome sequences to develop a molecular phylogenetic framework for Rhodococcus fascians and the Rhodococcus genus
title_fullStr Use of whole genome sequences to develop a molecular phylogenetic framework for Rhodococcus fascians and the Rhodococcus genus
title_full_unstemmed Use of whole genome sequences to develop a molecular phylogenetic framework for Rhodococcus fascians and the Rhodococcus genus
title_short Use of whole genome sequences to develop a molecular phylogenetic framework for Rhodococcus fascians and the Rhodococcus genus
title_sort use of whole genome sequences to develop a molecular phylogenetic framework for rhodococcus fascians and the rhodococcus genus
topic Plant Pathogen
Gram-positive
prokaryotic taxonomy
Average nucleotide identity
leafy gall
url http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00406/full
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