Acinetobacter puyangensis sp. nov., isolated from the healthy and diseased part of Populus xeuramericana canker bark.
2013
Two Gram-negative, non-motile, rod-shaped strains, BQ4-1T and NHI3-2, isolated respectively from the healthy and diseased part of Populus ×euramericana canker bark, were characterized using a polyphasic approach. Chemotaxonomic characterization supported the inclusion of the two strains in the genus
Acinetobacter
, with genomic DNA G+C contents (42.5–43 mol%) within the range observed for this genus (38–47 mol%) and 9-octadecenoic acid (C18 : 1ω9c, 39.87 %), hexadecanoic acid (C16 : 0, 11.26 %) and summed feature 3 (comprising C16 : 1ω7c/C16 : 1ω6c, 18.90 %) as major fatty acids. Phylogenetic analysis based on 16S rRNA, rpoB and gyrB gene sequences revealed that strains BQ4-1T and NHI3 did not cluster with any species with validly published names, and formed a distinct cluster with 99–100 % bootstrap support on three phylogenetic trees within the genus
Acinetobacter
. Acid was not produced from d-glucose, and haemolysis was not observed on agar media supplemented with sheep erythrocytes. On the basis of phenotypic, genotypic and phylogenetic characteristics, the two strains are considered to represent a novel species of the genus
Acinetobacter
, for which the name
Acinetobacter
puyangensis sp. nov. is proposed. The type strain is BQ4-1T ( = CFCC 10780T = JCM 18011T).
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