In silico genomic insights into aspects of food safety and defense mechanisms of a potentially probiotic Lactobacillus pentosus MP-10 isolated from brines of naturally fermented Aloreña green table olives

Abriouel, Hikmate and Pérez Montoro, Beatriz and Muñoz, María del Carmen Casado and Knapp, Charles W. and Gálvez, Antonio and Benomar, Nabil (2017) In silico genomic insights into aspects of food safety and defense mechanisms of a potentially probiotic Lactobacillus pentosus MP-10 isolated from brines of naturally fermented Aloreña green table olives. PLoS One, 12 (6). e0176801. ISSN 1932-6203

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    Abstract

    Lactobacillus pentosus MP-10, isolated from brines of naturally fermented Aloreña green table olives, exhibited high probiotic potential. The genome sequence of L. pentosus MP-10 is currently considered the largest genome among lactobacilli, highlighting the microorganism’s ecological flexibility and adaptability. Here, we analyzed the complete genome sequence for the presence of acquired antibiotic resistance and virulence determinants to understand their defense mechanisms and explore its safety in food. The annotated genome sequence revealed evidence of diverse mobile genetic elements, such as prophages, transposases and transposons involved in their adaptation to brine-associated niches. In-silico analysis of L. pentosus MP-10 genome sequence identified a CRISPR (clustered regularly interspaced short palindromic repeats)/cas (CRISPR-associated protein genes) as an immune system against foreign genetic elements, which consisted of six arrays (4-12 repeats) and eleven predicted cas genes [CRISPR1 and CRISPR2 consisted of 3 (Type II-C) and 8 (Type I) genes] with high similarity to L. pentosus KCA1. Bioinformatic analyses revealed L. pentosus MP-10 to be absent of acquired antibiotic resistance genes, and most resistance genes were related to efflux mechanisms; no virulence determinants were found in the genome. This suggests that L. pentosus MP-10 could be considered safe and with high-adaptation potential, which could facilitate its application as a starter culture and probiotic in food preparations.

    ORCID iDs

    Abriouel, Hikmate, Pérez Montoro, Beatriz, Muñoz, María del Carmen Casado, Knapp, Charles W. ORCID logoORCID: https://orcid.org/0000-0001-7997-8543, Gálvez, Antonio and Benomar, Nabil;
    • Item type:Article
      ID code:60612
      Dates:
      Date
      Event
      26 June 2017
      Published
      26 April 2017
      Accepted
      Keywords:Aloreña table olives, lactobacillus pentosus, probiotics, in silico analysis, mobile genetic element, antibiotic resistance, virulence, Microbiology, Immunology and Microbiology(all), Food Science, Biochemistry, Genetics and Molecular Biology(all)
      Subjects:Science > Microbiology
      Department:Faculty of Engineering > Civil and Environmental Engineering
      Depositing user: Pure Administrator
      Date deposited:04 May 2017 15:32
      Last modified:12 Jul 2021 08:24
      Related URLs:
      URI:https://strathprints.strath.ac.uk/id/eprint/60612
    CORE (COnnecting REpositories)