Updating the taxonomic toolbox: classification of Alteromonas spp. using multilocus phylogenetic analysis and MALDI-TOF mass spectrometry

Bacteria of the genus Alteromonas are Gram-negative, strictly aerobic, motile, heterotrophic marine bacteria known for their versatile metabolic activities. Identification and classification of novel species belonging to the genus Alteromonas generally involves DNA–DNA hybridization (DDH) as distinc...

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Veröffentlicht in:Antonie van Leeuwenhoek 2013-02, Vol.103 (2), p.265-275
Hauptverfasser: Ng, Hooi Jun, Webb, Hayden K., Crawford, Russell J., Malherbe, François, Butt, Henry, Knight, Rachel, Mikhailov, Valery V., Ivanova, Elena P.
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container_issue 2
container_start_page 265
container_title Antonie van Leeuwenhoek
container_volume 103
creator Ng, Hooi Jun
Webb, Hayden K.
Crawford, Russell J.
Malherbe, François
Butt, Henry
Knight, Rachel
Mikhailov, Valery V.
Ivanova, Elena P.
description Bacteria of the genus Alteromonas are Gram-negative, strictly aerobic, motile, heterotrophic marine bacteria known for their versatile metabolic activities. Identification and classification of novel species belonging to the genus Alteromonas generally involves DNA–DNA hybridization (DDH) as distinct species often fail to be resolved at the 97 % threshold value of the 16S rRNA gene sequence similarity. In this study, the applicability of Multilocus Phylogenetic Analysis (MLPA) and Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS) for the differentiation of Alteromonas species has been evaluated. Phylogenetic analysis incorporating five house-keeping genes ( dnaK , sucC , rpoB , gyrB , and rpoD ) revealed a threshold value of 98.9 % that could be considered as the species cut-off value for the delineation of Alteromonas spp. MALDI-TOF MS data analysis reconfirmed the Alteromonas species clustering. MLPA and MALDI-TOF MS both generated data that were comparable to that of the 16S rRNA gene sequence analysis and may be considered as useful complementary techniques for the description of new Alteromonas species.
doi_str_mv 10.1007/s10482-012-9807-y
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subjects Alteromonas
Alteromonas - chemistry
Alteromonas - classification
Alteromonas - genetics
Bacteriology
Biomedical and Life Sciences
Cluster Analysis
Deoxyribonucleic acid
DNA
DNA, Bacterial - chemistry
DNA, Bacterial - genetics
Genes, Essential
Gram-negative bacteria
Ionization
Life Sciences
Mass spectrometry
Medical Microbiology
Microbiology
Molecular Sequence Data
Multilocus Sequence Typing
Original Paper
Phylogenetics
Phylogeny
Plant Sciences
RNA, Ribosomal, 16S - genetics
Sequence Analysis, DNA - methods
Soil Science & Conservation
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization - methods
Taxonomy
title Updating the taxonomic toolbox: classification of Alteromonas spp. using multilocus phylogenetic analysis and MALDI-TOF mass spectrometry
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