Abstract
A Gram-negative, facultatively anaerobic, motile bacterial strain, TPQG1-4T, was isolated from the leaf of Cyclobalanopsis patelliformis with spot disease. The isolate was investigated using the polyphasic taxonomic approach. 16S rRNA gene sequencing and analyzing revealed that the novel strain shares the highest sequence similarity with Stenotrophomonas lactitubi M15T (99.6%), Stenotrophomonas indicatrix WS40T (99.4%), Stenotrophomonas maltophilia IAM 12423T (99.2%) and Stenotrophomonas pavanii LMG 25348T (99.0%). In phylogenetic trees based on 16S rRNA gene sequences, the novel strain branched independently from other species of Stenotrophomonas. Average nucleotide identity values between the novel isolate and S. lactitubi M15T, S. indicatrix WS40T, S. maltophilia IAM 12423T, S. pavanii LMG 25348T, and Pseudomonas geniculata ATCC 19374T were 87.2%, 87.3%, 86.3%, 88.0%, and 81.3%, respectively, suggesting the isolate was a novel species of the genus Stenotrophomonas. The DNA G + C content of TPQG1-4T is 67.1 mol%. The major fatty acids were iso-C15:0 (25.4%) and anteiso-C15:0 (17.0%). The polar lipids of TPQG1-4T included phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, amino phospholipid and phospholipid. Based on phenotypic and genotypic characteristics, the strain represents a novel species in the genus Stenotrophomonas, for which the name Stenotrophomonas cyclobalanopsidis sp. nov. is proposed. The type strain is TPQG1-4T (= CFCC 15341T = LMG 31208T).
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Acknowledgements
The authors wish to acknowledge the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2018ZB001), and the National Infrastructure of Microbial Resources (NIMR-2019-7) from Ministry of Science and Technology of the People’s Republic of China.
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DRB wrote the manuscript and performed the research. HX performed the genomic analysis. CP conceived of this study. YL contributed to study design and revised the paper. All authors read and approved the final version of the manuscript.
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Bian, Dr., Xue, H., Piao, Cg. et al. Stenotrophomonas cyclobalanopsidis sp. nov., isolated from the leaf spot disease of Cyclobalanopsis patelliformis. Antonie van Leeuwenhoek 113, 1447–1454 (2020). https://doi.org/10.1007/s10482-020-01453-y
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DOI: https://doi.org/10.1007/s10482-020-01453-y