Proposal of Acinetobacter thermotolerans sp. nov. to accommodate bovine feces-dwelling bacteria growing at 47 °C.

This study aimed to determine the taxonomic status of a new group of bovine strains of the genus Acinetobacter characterized by the rare ability to grow at temperatures above 44 °C. Initially, 24 strains were isolated from cattle feces collected at 11 farms in Czechia in 2022, representing a tentative new species based on preliminary whole-cell MALDI-TOF MS identification and rpoB gene sequencing. Twelve strains encompassing the within-group diversity were studied in detail, including whole genome de novo sequencing.

Evidence for the occurrence of Acinetobacter faecalis in cattle feces and its emended description.

This study provides an emended description of Acinetobacter faecalis, a species previously described based on a single isolate (YIM 103518) from elephant feces in China. Our emended description is based on 15 novel isolates conspecific with the A. faecalis type strain, obtained from eight cattle farms in the Czech Republic.

Proposal for sp. nov. to accommodate organisms of human clinical origin previously classified as genomic species 16.

In 1989, Bouvet and Jeanjean delineated five proteolytic genomic species (GS) of , each with two to four human isolates. Three were later validly named, whereas the remaining two (GS15 and GS16) have been awaiting nomenclatural clarification. Here we present the results of the genus-wide taxonomic study of 13 human strains classified as GS16 (=10) or GS15 (=3).