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Halocynthiibacter halioticoli sp. nov., isolated from the viscera of abalone Haliotis discus hannai

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Abstract

A Gram-stain-negative, rod-shaped, glide, non-flagellated, and facultatively anaerobic bacterial strain, designated as Z654T, was isolated from the gut of abalone Haliotis discus hannai from Rongcheng, Shandong province, China. Cells are 0.2–0.8 μm in width and 0.7–3.4 μm in length. Cells grew best at 30 °C (range, 15–37 °C), pH 7.0 (range, 6.0–8.5) and NaCl concentration of 2.0% (w/v) (range, 1–10%). According to the phylogenetic analysis of 16S rRNA gene sequence, the strain belongs to the genus Halocynthiibacter and the closest strain is Halocynthiibacter arcticus KCTC 42129 T (97.12%). The genome size of strain Z654T was 3,296,250 bp and the DNA G + C content was 54.2 mol%. The average nucleotide identity (ANI) scores and digital DNA–DNA hybridization (dDDH) scores with H. arcticus KCTC 42129 T were 70% and 14.6–18.2%, respectively. The predominant quinone was Q-10 and the major fatty acids were C18:0, C18:1 ω7c 11-methyl and summed feature 8. The polar lipids consisted of phosphatidylcholine, phosphatidylglycerol, unidentified aminolipid and unidentifed lipids. Based on the phenotypic, phylogenetic and chemotaxonomic data, strain Z654T was considered to represent a novel species of the genus Halocynthiibacter, for which the name Halocynthiibacte halioticoli sp. nov., is proposed. The type strain is Z654T (= MCCC 1H00503T = KCTC 92003 T).

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The data that support the finding of this study are openly avaiable in reference.

Abbreviations

dDDH:

Digital DNA–DNA hybridization

GGDC:

Genome-to-genome distance calculator

ANI:

Average nucleotide identity

APL:

Aminophospholipid

PC:

Phosphatidylcholine

PG:

Phosphatidylglycerol

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Acknowledgements

The implementation of scanning electron microscopy was supported by the Physical–Chemical Materials Analytical and Testing Center of Shandong University at Weihai.

Funding

This work was supported by Science & Technology Fundamental Resources Investigation Program (Grant No. 2022FY101100, 2019FY100700) and the National Natural Science Foundation of China (32070002).

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Contributions

Meng-Di Zhang wrote the original draft, Yu-Yan Yue wrote the main manuscript text, Dan-Dan Zhang and Yu-Yan Yue completed the total experiment, data curation and formal analysis. Dan-Dan Zhang prepared figure1-2, and Yu-Yan Yue Finish the following chart and table production. All authors reviewed the manuscript.

Corresponding author

Correspondence to Zong-Jun Du.

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This article does not contain any studies with animals performed by any of the authors.

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Informed consent was obtained from all individual participants included in the study.

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Communicated by Yusuf Akhter.

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Zhang, DD., Yue, YY., Zhang, MD. et al. Halocynthiibacter halioticoli sp. nov., isolated from the viscera of abalone Haliotis discus hannai. Arch Microbiol 205, 350 (2023). https://doi.org/10.1007/s00203-023-03686-7

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  • DOI: https://doi.org/10.1007/s00203-023-03686-7

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