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Rodrigo-Torres L, María Landete J, Huedo P, Peirotén Á, Langa S, Rodríguez-Minguez E, Medina M, Arahal DR, Aznar R, Arqués JL. Complete genome sequences of Lacticaseibacillus paracasei INIA P272 (CECT 8315) and Lacticaseibacillus rhamnosus INIA P344 (CECT 8316) isolated from breast-fed infants reveal probiotic determinants. Gene X 2022; 840:146743. [PMID: 35868412 DOI: 10.1016/j.gene.2022.146743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 06/08/2022] [Accepted: 07/14/2022] [Indexed: 11/30/2022] Open
Abstract
Lacticaseibacillus paracasei INIA P272 and Lacticaseibacillus rhamnosus INIA P344, isolated from breast-fed infants, are two promising bacterial strains for their use in functional foods according to their demonstrated probiotic and technological characteristics. To better understand their probiotic characteristics and evaluate their safety, here we report the draft genome sequences of both strains as well as the analysis of their genetical content. The draft genomes of L. paracasei INIA P272 and L. rhamnosus INIA P344 comprise 3.01 and 3.26 Mb, a total of 2994 and 3166 genes and a GC content of 46.27 % and 46.56 %, respectively. Genomic safety was assessed following the EFSA guidelines: the identification of both strains was confirmed through Average Nucleotide Identity, and the absence of virulence, pathogenic and antibiotic resistance genes was demonstrated. The genome stability analysis revealed the presence of plasmids and phage regions in both genomes, however, CRISPR sequences and other mechanisms to fight against phage infections were encoded. The probiotic abilities of both strains were supported by the presence of genes for the synthesis of SCFA, genes involved in resistance to acid and bile salts or a thiamine production cluster. Moreover, the encoded exopolysaccharide biosynthesis genes could provide additional protection against the deleterious gastrointestinal conditions, besides which, playing a key role in adherence and coaggregation of pathogenic bacteria together with the high number of adhesion proteins and domains encoded by both genomes. Additionally, the bacteriocin cluster genes found in both strains, could provide an advantageous ability to compete against pathogenic bacteria. This genomic study supports the probiotic characteristics described previously for these two strains and satisfies the safety requirements to be used in food products.
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Affiliation(s)
- Lidia Rodrigo-Torres
- Department of Microbiology and Ecology, University of Valencia, Burjassot 46100, Valencia, Spain; Spanish Type Culture Collection (CECT), University of Valencia, Paterna 46980, Valencia, Spain
| | - José María Landete
- Departamento Tecnología de Alimentos, INIA-CSIC, Carretera de La Coruña Km 7, 28040 Madrid, Spain
| | - Pol Huedo
- R&D Department, AB-Biotics S.A. (Part of Kaneka Corporation), Sant Cugat del Vallès 08172, Barcelona, Spain
| | - Ángela Peirotén
- Departamento Tecnología de Alimentos, INIA-CSIC, Carretera de La Coruña Km 7, 28040 Madrid, Spain
| | - Susana Langa
- Departamento Tecnología de Alimentos, INIA-CSIC, Carretera de La Coruña Km 7, 28040 Madrid, Spain
| | - Eva Rodríguez-Minguez
- Departamento Tecnología de Alimentos, INIA-CSIC, Carretera de La Coruña Km 7, 28040 Madrid, Spain
| | - Margarita Medina
- Departamento Tecnología de Alimentos, INIA-CSIC, Carretera de La Coruña Km 7, 28040 Madrid, Spain
| | - David R Arahal
- Department of Microbiology and Ecology, University of Valencia, Burjassot 46100, Valencia, Spain; Spanish Type Culture Collection (CECT), University of Valencia, Paterna 46980, Valencia, Spain
| | - Rosa Aznar
- Department of Microbiology and Ecology, University of Valencia, Burjassot 46100, Valencia, Spain; Spanish Type Culture Collection (CECT), University of Valencia, Paterna 46980, Valencia, Spain
| | - Juan L Arqués
- Departamento Tecnología de Alimentos, INIA-CSIC, Carretera de La Coruña Km 7, 28040 Madrid, Spain.
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