Abstract
A Gram-stain-negative bacterium, H13-6T, was isolated from a microbial fermentation bed material collected from a pig farm located in Yan’an, Shaanxi, China. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain H13-6T was affiliated with the genus Xanthomonas and showed highest similarity to strain Xanthomonas maliensis M97T (98.38%), Xanthomonas prunicola CFBP 8353T (98.26%) and Xanthomonas oryzae ATCC 35933T (98.11%). The pairwise ortho Average Nucleotide Identity values and the digital DNA-DNA hybridization values between strain H13-6T and the other Xanthomonas species were all below their respective cut-offs. Two genes encoding for chitinase were found and the strain showed a strong chitin-degrading activity. The major fatty acids were Iso-C15:0 (55.9%), Antesio-C15:0 (7.4%) and Iso-C11:0 (5.5%) and the major polar lipids were diphosphatidylglycerol, phosphatidyglycerol and phosphatidylethanolamine. Based on the phenotypic properties and phylogenetic distinctiveness, Xanthomonas chitinilytica was proposed as a novel species of the genus Xanthomonas, with strain H13-6T (= CGMCC 1.61317T = NBRC 115641T) as type strain.
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Data availability
This Whole Genome Shotgun project of strain H13-6T has been deposited at DDBJ/ENA/GenBank under the accession JAPCHY000000000. The version described in this paper is version JAPCHY000000000.1. The GenBank/EMBL/DDBJ accession numbers for 16S rRNA gene sequence is ON115013. The type strain H13-6T was deposited at the China General Microbiological Culture Collection Centre (CGMCC 1.61317T) and Biological Resource Center, NITE (NBRC 115641T).
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Acknowledgements
This work was supported financially by Special scientific Research Project of Education Department of Shaanxi Province (No. 21JK0992), Special fund for science and technology of Yan’an City (No.2019-27; No.203010105), Doctor Support Project of Yan’an University (No. YDBK2019-43, YDBK2019-44).
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ZD performed Material preparation. XL, XH and XL performed Data collection and analysis. XL and YJ wrote the main manuscript text. YJ designed and supervised the study. All authors reviewed the manuscript.
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Liu, X., Liu, X., Deng, Z. et al. Xanthomonas chitinilytica sp. nov., a novel chitinolytic bacterium isolated from a microbial fermentation bed material. Antonie van Leeuwenhoek 117, 17 (2024). https://doi.org/10.1007/s10482-023-01904-2
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DOI: https://doi.org/10.1007/s10482-023-01904-2