Cargando…

Phylogenetic relationships of fluorescent pseudomonads deduced from the sequence analysis of 16S rRNA, Pseudomonas-specific and rpoD genes

Phylogenetic relationship of 22 FLPs was revealed on the basis of polymorphism in three genes namely 16S rDNA, Pseudomonas-specific and rpoD gene regions. The primers for 16S rDNA, Pseudomonas-specific region and rpoD gene region were amplifying a region of 1492, 990 and 760 bp, respectively, from a...

Descripción completa

Detalles Bibliográficos
Autores principales: Rajwar, Asmita, Sahgal, Manvika
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4764612/
https://www.ncbi.nlm.nih.gov/pubmed/28330150
http://dx.doi.org/10.1007/s13205-016-0386-x
_version_ 1782417403211153408
author Rajwar, Asmita
Sahgal, Manvika
author_facet Rajwar, Asmita
Sahgal, Manvika
author_sort Rajwar, Asmita
collection PubMed
description Phylogenetic relationship of 22 FLPs was revealed on the basis of polymorphism in three genes namely 16S rDNA, Pseudomonas-specific and rpoD gene regions. The primers for 16S rDNA, Pseudomonas-specific region and rpoD gene region were amplifying a region of 1492, 990 and 760 bp, respectively, from all the isolates investigated. The RFLP analysis of the PCR products resulted in a classification of these fluorescent pseudomonads which was best answered by rpoD-based RFLP analysis. The 22 FLPs were placed in two major clusters and seven subclusters suggesting that these were genotypically heterogenous and might belong to several species within Pseudomonas sensu stricto. Sequence analysis of these three genes for three selected isolates AS5, AS7 and AS15 showed 16S rDNA and Pseudomonas-specific gene region phylogenies were generally similar, but rpoD gene phylogeny was somewhat different from these two genes. These results were also congruent with the results of RFLP of these three genes. rpoD provided comparable phylogenetic resolution to that of the 16S rRNA and Pseudomonas-specific genes at all taxonomic levels, except between closely related organisms (species and subspecies levels), for which it provided better resolution. This is particularly relevant in the context of a growing number of studies focusing on subspecies diversity, in which single-copy protein-encoding genes such as rpoD could complement and better justify the information provided by the 16S rRNA gene. Hence rpoD can be used further as an evolutionary chronometer for species-level identification.
format Online
Article
Text
id pubmed-4764612
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher Springer Berlin Heidelberg
record_format MEDLINE/PubMed
spelling pubmed-47646122016-02-24 Phylogenetic relationships of fluorescent pseudomonads deduced from the sequence analysis of 16S rRNA, Pseudomonas-specific and rpoD genes Rajwar, Asmita Sahgal, Manvika 3 Biotech Original Article Phylogenetic relationship of 22 FLPs was revealed on the basis of polymorphism in three genes namely 16S rDNA, Pseudomonas-specific and rpoD gene regions. The primers for 16S rDNA, Pseudomonas-specific region and rpoD gene region were amplifying a region of 1492, 990 and 760 bp, respectively, from all the isolates investigated. The RFLP analysis of the PCR products resulted in a classification of these fluorescent pseudomonads which was best answered by rpoD-based RFLP analysis. The 22 FLPs were placed in two major clusters and seven subclusters suggesting that these were genotypically heterogenous and might belong to several species within Pseudomonas sensu stricto. Sequence analysis of these three genes for three selected isolates AS5, AS7 and AS15 showed 16S rDNA and Pseudomonas-specific gene region phylogenies were generally similar, but rpoD gene phylogeny was somewhat different from these two genes. These results were also congruent with the results of RFLP of these three genes. rpoD provided comparable phylogenetic resolution to that of the 16S rRNA and Pseudomonas-specific genes at all taxonomic levels, except between closely related organisms (species and subspecies levels), for which it provided better resolution. This is particularly relevant in the context of a growing number of studies focusing on subspecies diversity, in which single-copy protein-encoding genes such as rpoD could complement and better justify the information provided by the 16S rRNA gene. Hence rpoD can be used further as an evolutionary chronometer for species-level identification. Springer Berlin Heidelberg 2016-02-23 2016-06 /pmc/articles/PMC4764612/ /pubmed/28330150 http://dx.doi.org/10.1007/s13205-016-0386-x Text en © The Author(s) 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Original Article
Rajwar, Asmita
Sahgal, Manvika
Phylogenetic relationships of fluorescent pseudomonads deduced from the sequence analysis of 16S rRNA, Pseudomonas-specific and rpoD genes
title Phylogenetic relationships of fluorescent pseudomonads deduced from the sequence analysis of 16S rRNA, Pseudomonas-specific and rpoD genes
title_full Phylogenetic relationships of fluorescent pseudomonads deduced from the sequence analysis of 16S rRNA, Pseudomonas-specific and rpoD genes
title_fullStr Phylogenetic relationships of fluorescent pseudomonads deduced from the sequence analysis of 16S rRNA, Pseudomonas-specific and rpoD genes
title_full_unstemmed Phylogenetic relationships of fluorescent pseudomonads deduced from the sequence analysis of 16S rRNA, Pseudomonas-specific and rpoD genes
title_short Phylogenetic relationships of fluorescent pseudomonads deduced from the sequence analysis of 16S rRNA, Pseudomonas-specific and rpoD genes
title_sort phylogenetic relationships of fluorescent pseudomonads deduced from the sequence analysis of 16s rrna, pseudomonas-specific and rpod genes
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4764612/
https://www.ncbi.nlm.nih.gov/pubmed/28330150
http://dx.doi.org/10.1007/s13205-016-0386-x
work_keys_str_mv AT rajwarasmita phylogeneticrelationshipsoffluorescentpseudomonadsdeducedfromthesequenceanalysisof16srrnapseudomonasspecificandrpodgenes
AT sahgalmanvika phylogeneticrelationshipsoffluorescentpseudomonadsdeducedfromthesequenceanalysisof16srrnapseudomonasspecificandrpodgenes