Acinetobacter zhairhuonensis sp. nov., isolated from sediments of the East China Sea
Year: 2025
Type: article
Abstract: A novel aerobic bacterial strain, designated as Acinetobacter zhairhuonensis sp. nov. A7.4 T , was isolated from East China Sea sediments near Zhairuo island. Cells were Gram-stain-negative, non-motile short rods, forming milky, moist colonies. Growth occurred at 10–35 °C, pH 6.0–9.0 and 0–5% NaCl concentrations (w/v). Strain A7.4 T was catalase-positive and oxidase-negative. Major fatty acids (>10%) included summed feature 3 (C 16:1 ω7c/C 16 :1 ω6c), C 18:1 ω9c and C 16:0 . The polar lipid profile comprised diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, two phospholipids and two aminolipids. Ubiquinone Q-9 and Q-8 predominated. The genome (3.57 Mb, 41.3 mol% GC) included one chromosome and a plasmid. The core-genome phylogeny placed A7.4 T within Acinetobacter , forming a distinct clade with Acinetobacter kanungonis PS-1 T , Acinetobacter tibetensis Y-23 T and Acinetobacter tandoii CIP107469 T . Average nucleotide identity (ANI), average amino acid identity (AAI) and digital DNA–DNA hybridization (dDDH) values between strain A7.4 T and 87 validly published Acinetobacter species were below species thresholds (96% ANI/AAI, 70% dDDH). Phenotypic, genomic and chemotaxonomic data support the proposal of Acinetobacter zhairhuonensis sp. nov., with type strain A7.4 T (=MCCC 1K07162 T =LMG 32567 T ).
Authors: Qian Jiang, Yike Wang, Kaiwen Zheng, Yuangui Tang, Yunlu Cui, Qunjian Yin, Daoqiong Zheng, Jinzhong Xu, Daxiong Ji, Dongdong Zhang, Sanjit Chandra Debnath, Pinmei Wang
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4415436806