Abstract
A novel Gram-stain-negative, rod-shaped, strictly aerobic, non-motile bacterium, designated strain cd-1T, was isolated from a farmland soil applied with amino acid fertilizer in Zhengzhou, Henan province, China. The optimum growth of strain cd-1T occurred at 30 °C, pH 7.0 in Luria–Bertani (LB) broth without NaCl supplement. Phylogenetic analysis based on 16S rRNA gene sequences indicated that cd-1T is member of the genus Aquamicrobium, and formed a separate branch with Aquamicrobium aerolatum DSM 21857T (96.5%) and Aquamicrobium soli KCTC 52165T (95.7%). The draft genome sequencing revealed a DNA G + C content of 59.2 mol% and Q-10 was the predominant respiratory quinone. The major cellular fatty acids were identified as C18:1 ω7c (35.8%), C19:0 cyclo ω8c (32.1%), and C18:1 ω7c 11-methyl (5.2%). The polar lipids consisted of phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine and phosphatidylmonomethylethanolamine. Average nucleotide identity (ANI) and the digital DNA-DNA hybridizations (dDDH) for draft genomes between strain cd-1T and KCTC 52165T were 71.0% and 19.9%, respectively, the values for strain cd-1T and DSM 21857T were 73.4% and 20.6%. Based on the physiological and biochemical characteristics, phylogenetic and chemotaxonomic analysis, strain cd-1T is considered to represent a novel species of the genus Aquamicrobium, for which the name Aquamicrobium zhengzhouense sp. nov. is proposed. The type strain is cd-1T (= KCTC 82182T = CCTCC M 2018904T).
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Funding
Key research and development projects in Anhui Province Grant No. (202004f06020049). Major Science and Technology Projects in Anhui Province Grant No. (18030701214). Natural Science Foundation of the Anhui Higher Education Institutions of China Grant Nos. (KJ2020A0050, KJ2018A0530). Anhui Province University Student Innovation and Entrepreneurship Training Program Project Grant No. (S201910879040). Stable Talent Project of Anhui Science and Technology University.
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Wang, X., Zhou, CF., Cheng, JR. et al. Aquamicrobium zhengzhouense sp. nov., a Bacterium Isolated from Farmland Soil Applied with Amino Acid Fertilizer. Curr Microbiol 78, 3798–3803 (2021). https://doi.org/10.1007/s00284-021-02600-y
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DOI: https://doi.org/10.1007/s00284-021-02600-y