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Dyadobacter luteus sp. nov., isolated from rose rhizosphere soil

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Abstract

A novel Gram-negative, aerobic, rod-shaped bacterium, RS19T, was isolated from rose rhizosphere soil. The strain was psychrophilic and showed good growth over a temperature range of 1–37 ℃. Colonies on TSB agar were circular, smooth, mucoid, convex with clear edges and yellow. Phylogenetic analysis based on 16S rRNA gene sequences characterized RS19T in the genus Dyadobacter and showed that strain RS19T was most closely related to Dyadobacter psychrophilus CGMCC 1.8951T (97.4%) and Dyadobacter alkalitolerans CGMCC 1.8973T (97.1%). The average nucleotide identity values to the closest related species type strains were less than 84.0%. The DNA G + C content was 43.1 mol%, and the predominant respiratory menaquinone was MK-7. The major fatty acids were summed features 3 (C16:1ω7c and/or C16:1ω6c), iso-C15:0, C16:1ω5c and iso-C17:0 3-OH. Based on genotypic, phenotypic and chemotaxonomic data, strain RS19T is different from closely related species of the genus Dyadobacter. RS19T represents a novel species within the genus Dyadobacter, for which the name Dyadobacter luteus sp. nov. is proposed. The type strain is RS19T (= CGMCC 1.13719T = ACCC 60381T = JCM 32940T).

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Abbreviations

NCBI:

National Center for Biotechnology Information database

NJ:

Neighbor joining

ML:

Maximum-likelihood

ME:

Minimum evolution

ORFs:

Open-reading frames

ANI:

Average nucleotide identities

TSB:

Tryptic soy broth

TSA:

Tripticase soy agar

PE:

Phosphatidylethanolamine

PL:

Unidentified phospholipid

AL:

Aminolipids

L:

Unidentified lipids

MK-7:

Menaquinone-7

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Acknowledgements

We would like to thank Prof. Aharon Oren for very valuable help in naming the organism. We thank Yu Luo for the help with acquisition of the SEM images of the strain.

Funding

This work was supported by the Fundamental Research Funds for the Central Non-profit Research Institution of the Chinese Academy of Forestry (CAFYBB2017MA020, CAFYBB2017MA017) and National Natural Science Foundation of China (31700548, 31700571).

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Correspondence to Yunpeng Liu.

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Communicated by Erko Stackebrandt.

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The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene and genome of Dyadobacter luteus sp. nov. strain RS19T are MH558673 and QNUL00000000. The digital protologue database (DPD) Taxon Number of strain RS19T is TA01031.

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Chen, L., Gao, X., Ma, Q. et al. Dyadobacter luteus sp. nov., isolated from rose rhizosphere soil. Arch Microbiol 202, 191–196 (2020). https://doi.org/10.1007/s00203-019-01738-5

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  • DOI: https://doi.org/10.1007/s00203-019-01738-5

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