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Advisor(s)
Abstract(s)
Bacillus pumilus is a Gram-positive bacterium with a wide range of attributed
applications, namely as a plant growth promoting rhizobacteria (PGPR), animal,
and human probiotic. However, a rare putative role in human diseases
has been reported, namely in food poisoning or as anthrax-like cutaneous
infectious agent. This species is difficult to distinguish from its closely related
species on the basis of phenotypic or biochemical characteristics and 16S rRNA
gene sequences. In this study, the phylogenetic analysis of gyrB and rpoB gene
sequences of a collection of isolates previously identified as B. pumilus,
assigned most of them (93%, 38 of 41 isolates) to B. safensis or to the new
recently described B. invictae. Moreover, we extended the previously reported
recognized habitats of these species and unveiled a human health or biotechnological
relevance (e.g. as implicated in food poisoning or PGPR) for them.
Additionally, we demonstrated that both B. safensis and B. invictae species
encompass a clonally diverse population, which can justify their great adaptation
ability to different niches, with evidence of clonal-host specificity
Description
Keywords
Bacillus pumilus Bacillus safensis Bacillus invictae Diversity gyrB gene PFGE
Citation
BRANQUINHO, R… [et al.] - Phylogenetic and clonality analysis of bacillus pumilus isolates uncovered a highly heterogeneous population of different closely related species and clones. FEMS Microbiology Ecology. ISSN 1574-6941. Vol. 90, n.º 3 (2014), p. 689-698
Publisher
Oxford University Press