Acinetobacter albensis sp. nov., isolated from natural soil and water ecosystems.
2015
We have studied the taxonomic position of a phenetically unique
group of eight strains of the genus Acinetobacter which were
isolated from soil and water samples collected in protected
landscape areas in the Czech Republic. Each of the comparative
sequence analyses of the 16S rRNA, gyrB and rpoB genes showed
that the eight strains formed a cohesive and tight cluster
(intracluster sequence identities of >= 99.9 %, >= 98.5 % and
>= 97.7 %, respectively), which was clearly separated from all
hitherto known species of the genus Acinetobacter (<= 98.6 %,
<= 84.5 % and <= 89.3 %, respectively). Congruent with these
findings were the results of comparative sequence analysis of
three additional housekeeping genes (gltA, pyrG and recA). This
genotypic distinctness was mirrored by the uniqueness of the
combination of a number of independent phenotypic markers
including the whole-cell spectra produced by matrix-assisted
laser desorption ionization time-of-flight (MALDI-ToF) MS and
physiological and metabolic features. The most useful
phenotypic features to differentiate the eight strains from all
known species of the genus Acinetobacter were the ability to
assimilate tricarballylate and the inability to grow at 35
degrees C or to assimilate ethanol or L-histidine. We conclude
that the eight strains represent a novel environmental species
for which the name Acinetobacter albensis sp. nov. is proposed.
The type strain is ANC 4874(T) (=CCUG 67281(T)=CCM 8611(T)).
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