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2. Listeria valentina sp. nov., isolated from a water trough and the faeces of healthy sheep

Author

Alexandra Moura, Ángel Gómez-Martín, Guillaume Vales, Nathalie Tessaud-Rita, Ángel García-Muñoz, Marc Lecuit, Juan J. Quereda, Alexandre Leclercq, Hélène Bracq-Dieye, Pierre Thouvenot, Universidad Cardenal Herrera-CEU (CEU-UCH), Biologie des Infections - Biology of Infection, Institut Pasteur [Paris] (IP)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre National de Référence Listeria - National Reference Center Listeria (CNRL), Centre collaborateur de l'OMS Listeria / WHO Collaborating Centre Listeria (CC-OMS / WHO-CC), Institut Pasteur [Paris] (IP)-Organisation Mondiale de la Santé / World Health Organization Office (OMS / WHO), Service des Maladies infectieuses et tropicales [CHU Necker], CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), This work was supported by Generalitat Valenciana (Project reference GV/2018/A/183) and by the Spanish Ministry of Science and Innovation (Project reference PID2019-110764RA-I00), Institut Pasteur, Inserm and Santé Publique France. J.J. Quereda is supported by a ‘Ramón y Cajal’ contract of the Spanish Ministry of Science, Innovation and Universities (RYC-2018–024985-I)., DIAKITE, andrée, Institut Pasteur [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), and Institut Pasteur [Paris]-Organisation Mondiale de la Santé / World Health Organization Office (OMS / WHO)

Subjects
POCP, [SDV]Life Sciences [q-bio], Context (language use), Microbiology, new taxa, 03 medical and health sciences, Monophyly, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Clade, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, isDDH, Ecology, Evolution, Behavior and Systematics, 030304 developmental biology, Whole genome sequencing, whole genome sequencing, 0303 health sciences, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, biology, Phylogenetic tree, AAI, 030306 microbiology, General Medicine, isDDH Subject category: International Journal of Systematic and Evolutionary Microbiology Designation of Neotype Strains Subject: New Taxa -Firmicutes and Related Organisms, 16S ribosomal RNA, biology.organism_classification, [SDV] Life Sciences [q-bio], [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Taxon, ANI, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Listeria, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

In the context of a study on the occurrence of Listeria species in an animal farm environment in Valencia, Spain, six Listeria -like isolates could not be assigned to any known species. Phylogenetic analysis based on the 16S rRNA gene and on 231 Listeria core genes grouped these isolates in a monophyletic clade within the genus Listeria , with highest similarity to Listeria thailandensis . Whole-genome sequence analyses based on in silico DNA–DNA hybridization, the average nucleotide blast and the pairwise amino acid identities against all currently known Listeria species confirmed that these isolates constituted a new taxon within the genus Listeria . Phenotypically, these isolates differed from other Listeria species mainly by the production of acid from inositol, the absence of acidification in presence of methyl α-d-glucoside, and the absence of α-mannosidase and nitrate reductase activities. The name Listeria valentina sp. nov. is proposed for this novel species, and the type strain is CLIP 2019/00642T (=CIP 111799T=DSM 110544T).

Published
2020
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3. Listeria monocytogenes: towards a complete picture of its physiology and pathogenesis

Author

Lilliana Radoshevich, Pascale Cossart, Interactions Bactéries-Cellules (UIBC), Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Pasteur [Paris]-Institut National de la Recherche Agronomique (INRA), The authors gratefully acknowledge financial support from the European Research Area Network (ERA-NET) Infect-ERA BACVIRISG15 and PROANTILIS, the European Research Council (ERC) Advanced Grant BacCellEpi (670823), Agence Nationale de la Recherche (ANR) BACNET (10-BINF-02-01), ANR Investissement d'Avenir Programme (10-LABX-62-IBEID), Human Frontier Science Program (HFSP, RGP001/2013), the Balzan Foundation, the Pasteur-Weizmann Council and the Fondation le Roch les Mousquetaires. P.C. is a senior international research scholar of the Howard Hughes Medical Institute, USA., The authors thank D. Ribet, J.J. Quereda, S. Brisse and M. Lecuit for allowing us to adapt their figures. The authors thank H. Bierne, J. Pizarro-Cérda and O. Dussurget for helpful discussions., ANR-13-IFEC-0004,PROANTILIS,Subversive pro- and anti-inflammation trade-offs promote infection by Listeria monocytogenes(2013), ANR-10-BINF-02-01/10-BINF-0002,BACNET,BACNET(2010), ANR-10-LABX-62-IBEID,IBEID,Laboratoire d'Excellence 'Integrative Biology of Emerging Infectious Diseases'(2010), European Project: 670823,H2020,ERC-2014-ADG,BacCellEpi(2015), Institut National de la Recherche Agronomique (INRA)-Institut Pasteur [Paris] (IP)-Institut National de la Santé et de la Recherche Médicale (INSERM), ANR-10-BINF-0002,BACNET,Exploring composition and dynamics of bacterial regulatory networks(2010), ANR-10-LABX-0062,IBEID,Integrative Biology of Emerging Infectious Diseases(2010), and Institut National de la Recherche Agronomique (INRA)-Institut Pasteur [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM)

Subjects
0301 basic medicine, Bacterial immune evasion, 030106 microbiology, Physiology, Virulence, Bacterial adhesion, Disease, [SDV.BC]Life Sciences [q-bio]/Cellular Biology, Biology, MESH: Virulence, medicine.disease_cause, MESH: Listeria monocytogenes, Microbiology, Bacterial evolution, 03 medical and health sciences, Antibiotic resistance, Listeria monocytogenes, Immunity, Bacterial genetics, medicine, Bacterial transcription, MESH: Animals, Cellular microbiology, Pathogen, MESH: Virulence Factors, MESH: Humans, General Immunology and Microbiology, Effector, Host (biology), MESH: Host-Pathogen Interactions, Antimicrobial responses, Bacterial pathogenesis, Bacterial host response, 3. Good health, Infectious Diseases, MESH: Listeriosis, Pathogens
Abstract

International audience; Listeria monocytogenes is a food-borne pathogen responsible for a disease called listeriosis, which is potentially lethal in immunocompromised individuals. This bacterium, first used as a model to study cell-mediated immunity, has emerged over the past 20 years as a paradigm in infection biology, cell biology and fundamental microbiology. In this Review, we highlight recent advances in the understanding of human listeriosis and L. monocytogenes biology. We describe unsuspected modes of hijacking host cell biology, ranging from changes in organelle morphology to direct effects on host transcription via a new class of bacterial effectors called nucleomodulins. We then discuss advances in understanding infection in vivo, including the discovery of tissue-specific virulence factors and the 'arms race' among bacteria competing for a niche in the microbiota. Finally, we describe the complexity of bacterial regulation and physiology, incorporating new insights into the mechanisms of action of a series of riboregulators that are critical for efficient metabolic regulation, antibiotic resistance and interspecies competition.

Published
2017
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