Document Detail


Expanded phylogeny of myxobacteria and evidence for cultivation of the 'unculturables'.
MedLine Citation:
PMID:  20807581     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
An expanded neighbour-joining tree of myxobacteria is presented based on the analysis of 16S rRNA gene sequences of 101 strains (including types) representing 3 suborders, 6 families, 20 genera, 46 species, and 12 other novel taxa. The distinctions amongst members of the three suborders (Sorangiineae, Cytobacterineae and Nannocystineae) are reaffirmed. The positions of anaerobic myxobacteria, novel groups (Pyxidicoccus and several Cystobacter species) in Cystobacterineae, the marine genera (Plesiocystis, Haliangium, Enhygromyxa), and two additional novel taxa ('Paraliomyxa miuraensis', brackish-water isolate) were together revealed for the first time. Changes in the nomenclature of several isolates (Polyangium vitellinum Pl vt1(T), Polyangium thaxteri Pl t3, Polyangium cellulosum, NOSO-1, NOCB-2, NOCB-4) are also highlighted. Suborders Sorangiineae and Nannocystineae hold great promise for novel strain discovery. In Sorangiineae, the new family Phaselicystidaceae, with a monotypic genus, was added. Nine additional novel taxa were discovered in this suborder for which new genera or even families may be erected in the near future. These taxa appear to represent the so-called viable but not culturable (VBNC) group of myxobacteria. Based on at least 4% phylogenetic distance, new clades were formed comprising of novel Nannocystineae and Sorangiineae isolates. Overall, the myxobacteria, on the basis of bracket distance, could be divided into 16 clusters, as supported by tree topology and a morphology-based approach.
Authors:
Ronald Garcia; Klaus Gerth; Marc Stadler; Irineo J Dogma; Rolf Müller
Publication Detail:
Type:  Journal Article     Date:  2010-08-31
Journal Detail:
Title:  Molecular phylogenetics and evolution     Volume:  57     ISSN:  1095-9513     ISO Abbreviation:  Mol. Phylogenet. Evol.     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9304400     Medline TA:  Mol Phylogenet Evol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  878-87     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Inc. All rights reserved.
Affiliation:
Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus C2 3, 66123 Saarbrücken, Germany.
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