Abstract
An alkaliphilic and aerobic bacterium, designated as strain JB21T, was isolated from a soda alkali-saline soil sample in Heilongjiang, Northeast China. Strain JB21T is a Gram-stain-negative, rod-shaped, non-motile and amylase-positive bacterium. Growth occurred at 15–45 °C (optimum, 35–37 °C), in the presence of 0–15.0% (w/v) NaCl (optimum, 1.0%) and at pH 6.5–10.5 (optimum, pH 8.5–9.5). Phylogenetic analysis based on 16S rRNA gene sequences showed that strain JB21T was most closely related to type strains of the genus Alcanivorax, with the highest sequence similarity to Alcanivorax indicus SW127T (96.3%), and shared 95.4–93.1% sequence identity with other valid type strains of this genus. The major cellular fatty acids identified were C16:0 and summed feature 8 (C18:1ω6c and/or C18:1ω7c). The polar lipids comprised phosphatidylethanolamine, phosphatidylglycerol and one unidentified phospholipid. The genomic G + C content of strain JB21T was 61.3 mol%. The digital DNA-DNA hybridization (dDDH) estimation and average nucleotide identity (ANI) between strain JB21T and type strains of the genus Alcanivorax were 18.3–23.2% and 69.2–79.0%, respectively. On the basis of its phenotypic and phylogenetic characteristics, we suggest the creation of a new species within the Alcanivorax genus, named Alcanivorax limicola sp. nov., type strain JB21T (= CGMCC 1.16632T = JCM 33717T).
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Abbreviations
- DSA:
-
Denitrifier Selective Agar
- DSB:
-
Denitrifier Selective Broth
- ANI:
-
Average nucleotide identity
- dDDH:
-
Digital DNA-DNA hybridization
- COG:
-
Clusters of orthologous groups
- OC:
-
Orthologous cluster
- ASM:
-
Artificial sea water medium
- ML:
-
Maximum-likelihood
- MP:
-
Maximum-parsimony
- NJ:
-
Neighbour-joining
- OC:
-
Orthologous cluster
- PG:
-
Phosphatidylglycerol
- PE:
-
Phosphatidylethanolamine
- PL:
-
Unidentified phospholipid
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (31770543, 41503068, 31600069), Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD-2018-87) and Natural Science Foundation of Jiangsu Province of China (BK20150496, BK20150497).
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Zhu, L., Wang, Y., Ding, Y. et al. Alcanivorax limicola sp. nov., isolated from a soda alkali-saline soil. Arch Microbiol 204, 106 (2022). https://doi.org/10.1007/s00203-021-02638-3
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DOI: https://doi.org/10.1007/s00203-021-02638-3