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Antimicrobial activity against Staphylococcus aureus and genome features of Lactiplantibacillus plantarum LR-14 from Sichuan pickles

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Abstract

The persistence of Staphylococcus aureus within biofilm can lead to contamination of medical devices and life-threatening infections. Luckily, lactic acid bacteria (LAB) have an inhibitory effect on the growth of these bacteria. This study aims to select LAB strains from fermented vegetables, and analyze their potential inhibition activities against S. aureus. In total, 45 isolates of LAB were successfully isolated from Sichuan pickles, and the CFS of Lactiplantibacillus plantarum LR-14 exerted the strongest inhibitory effect against S. aureus. Moreover, S. aureus cells in planktonic and biofilm states both wrinkled and damaged when treated with the CFS of L. plantarum LR-14. In addition, whole genome sequencing analysis indicates that L. plantarum LR-14 contains various functional genes, including predicted extracellular polysaccharides (EPS) biosynthesis genes, and genes participating in the synthesis and metabolism of fatty acid, implying that L. plantarum LR-14 has the potential to be used as a probiotic with multiple functions.

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Funding

This work was financially supported by the National Science Foundation for Young Scientists of China (Grant No. 32001663), the Sichuan Province Science and Technology Innovation Seedling Project (2021081), Chunhui Project of Ministry of Education of China, and the Open Research Fund of Comprehensive Health Promotion Center of Xihua University (jkgl2018-033).

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SY, SG, XC, XD, MT and YT: performed the experiments, analyzed data and wrote the manuscript. JW: reviewed and edited the manuscript. LL and YR: designed this study, supervised all experiments and reviewed the manuscript. All authors read and approved the final manuscript.

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Correspondence to Guorong Liu or Yu Rao.

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Communicated by Erko Stackebrandt.

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Yang, S., Liu, L., Wang, J. et al. Antimicrobial activity against Staphylococcus aureus and genome features of Lactiplantibacillus plantarum LR-14 from Sichuan pickles. Arch Microbiol 204, 637 (2022). https://doi.org/10.1007/s00203-022-03232-x

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  • DOI: https://doi.org/10.1007/s00203-022-03232-x

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