LuxS quorum sensing system mediating Lactobacillus plantarum probiotic characteristics.
Arch Microbiol
; 203(7): 4141-4148, 2021 Sep.
Article
em En
| MEDLINE
| ID: mdl-34057545
ABSTRACT
Lactobacillus plantarum is one of common probiotics in fermented foods. Quorum sensing (QS) is a common communication way within bacteria. It is not clear whether the probiotic properties of L. plantarum mediated by QS. Here, Lb. plantarum YM-4-3 was examined for resistance of pH, bile, antimicrobial and luxS gene expression pattern. The study found that (1) the supernatant of YM-4-3 had bacteriostatic effect to Escherichia coli O157H7, Listeria monocytogenes and Staphylococcus aureus; (2) Lb. plantarum YM-4-3 shown tolerance property to the strongest acid culture that pH value of 3; (3) the bile tolerance of Lb. plantarum YM-4-3 was significant difference with the growth stage, the early exponential phase of the growth culture can tolerate bile of 0.4% (w/v), while the stationary growth stage can only tolerate bile of 0.2%; (4) Lb. plantarum YM-4-3 luxS gene was contrary expression along with the growth. (5) Compared with the wild-type strain, the adhesion ability of Lb. plantarum YM-4-3 ΔluxS was decreased obviously. These results showed that AI-2 LuxS quorum sensing system mediating Lb. plantarum acid, bile tolerance, antimicrobial and adhesion of probiotics.
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Base de dados:
MEDLINE
Assunto principal:
Probióticos
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Lactobacillus plantarum
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Percepção de Quorum
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article