Ge, Jingping and Ji, Xiaolei and You, Tian and Sun, Yanyang and Ping, Wenxiang (2018) Construction of prcK and prcR Mutant Strains of Lactobacillus paracasei HD1.7 and the Impact on the Production of Paracin 1.7. Microbiology Research, 9 (1). ISSN 2036-7473
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Abstract
Gene knockouts of prcK, prcR and both together were constructed in L. paracasei HD1.7. The antimicrobial activities of the prcK, prcR and prcKprcR mutant strains against B. subtilis were 23.6%, 21.9% and 36.6% lower than that of the parental strain, respectively, indicating that these genes affect production of bacteriocin antimicrobial peptides. qRT-PCR assays showed that the relative transcription levels of prcK and prcR mRNA in the ΔK and ΔR strains were 0.36 and 0.33 times of that in parental bacteria, respectively. Our data suggest that prcK and prcR are quorum sensing related genes that influence production of the bacteriocin Paracin 1.7. This research provides the basis for exploring the functions of these genes in the production of Paracin 1.7 and more generally for the exploration of the biological preservatives instead of chemical preservatives.
Item Type: | Article |
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Subjects: | STM Digital Press > Medical Science |
Depositing User: | Unnamed user with email support@stmdigipress.com |
Date Deposited: | 16 Jun 2023 07:20 |
Last Modified: | 19 Sep 2024 09:32 |
URI: | http://publications.articalerewriter.com/id/eprint/1151 |