A stable home for an equine pathogen: valid publication of the binomial Prescottella equi gen. nov., comb. nov., and reclassification of four rhodococcal species into the genus Prescottella.

The research article focuses on official changes in the nomenclature of certain bacterial species that affect horses, solidifying the name “Prescottella equi” for a particular pathogen and rearranging four other species under the same new genus, “Prescottella.”

Reclassification and Naming of the Species

• The research paper discusses an official classification clarification from a recognized authority known as the Judicial Commission, Opinion 106. This opinion clarified the names of a taxon – a group of one or more populations of organisms seen by taxonomists to form a unit.
• Previously, there had been confusion about the correct name for a bacterial species that affects horses. Following the guidance of Opinion 106, the authors formally introduce the genus name “Prescottella” and establish the nomenclatural type species as “Prescottella equi” comb. nov. (a new combination of existing nomenclature).

Reclassification of Four Species

• Following the official naming of “Prescottella equi”, the study also proposes the reclassification of four bacterial species: “Guo et al. 2015 comb. nov.”, “Kämpfer . 2014 comb. nov.”, “Li . 2015 comb. nov.” and “Lee . 2019 comb. nov.”. These species are to be newly combined in the “Prescottella” genus.
• This reclassification is significant for the science of taxonomy. By making these changes, scientists can have a more organized understanding of the relatedness between these pathogens, which can aid in the study and potentially the treatment of diseases they may cause.

Additional Species

• In addition to the nomenclature clarification and reclassification efforts, the paper also identifies a clinical isolate, strain 86-07 (=W8901), as another likely member of the “Prescottella” genus. This provides another organism for further biological research and comparison with identified species.

Stable Classification

• The authors state that approximately a century after the original identification and description of the type strain of the type species as “Prescottella equi”, they have now finally provided a stable, standard ‘home’ for this bacterial species and its relatives. This provides a stable and universal nomenclature that scientists can use in future research.