Phylo-geographic study on highly novel slow-growing microorganisms

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A slow-growing aerobic bacterium, named Shr3, was isolated from an arid area in Tunisia, and was only distantly related to all other known organisms at <82% similarity of 16S rRNA gene sequences. Along with other genetic, biochemical and physiological properties, the isolate Shr3 was shown to be a highly novel new species, representing a new Class within the Phylum Proteobacteria. This taxonomic proposal has been subject to expert reviews.A copy (sub-culture) of the Shr3 strain has been deposited at National Collection of Industrial, Food and Marine Bacteria (NCIMB), UK. In addition to Shr3, two more isolates were also characterized to propose new taxa, i.e., species, genera, families, orders, or higher.