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Kangale LJ, Raoult D, Fournier PE, Ghigo E. Culturomics revealed the bacterial constituents of the microbiota of a 10-year-old laboratory culture of planarian species S. mediterranea. Sci Rep 2021; 11:24311. [PMID: 34934139 PMCID: PMC8692324 DOI: 10.1038/s41598-021-03719-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/06/2021] [Indexed: 11/09/2022] Open
Abstract
The planarian species Schmidtea mediterranea is a flatworm living in freshwater that is used in the research laboratory as a model to study developmental and regeneration mechanisms, as well as antibacterial mechanisms. However, the cultivable microbial repertoire of the microbes comprising its microbiota remains unknown. Here, we characterized the bacterial constituents of a 10-year-old laboratory culture of planarian species S. mediterranea via culturomics analysis. We isolated 40 cultivable bacterial species, including 1 unidentifiable species. The predominant phylum is Proteobacteria, and the most common genus is Pseudomonas. We discovered that parts of the bacterial flora of the planarian S. mediterranea can be classified as fish pathogens and opportunistic human pathogens.
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Affiliation(s)
- Luis Johnson Kangale
- Aix-Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée-Infection, Marseille, France
| | - Didier Raoult
- IHU-Méditerranée-Infection, Marseille, France.,Aix-Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France.,Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Pierre-Edouard Fournier
- Aix-Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France. .,IHU-Méditerranée-Infection, Marseille, France.
| | - Eric Ghigo
- IHU-Méditerranée-Infection, Marseille, France. .,TechnoJouvence, 19-21 Boulevard Jean Moulin, 13385, Marseille Cedex 05, France.
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Suárez P, Gutiérrez A, Salazar V, Puche M, Serrano Y, Martínez S, González G, Fernández‐Delgado M. Virulence properties and antimicrobial resistance of
Pseudomonas aeruginosa
isolated from cave waters at Roraima Tepui, Guayana Highlands. Lett Appl Microbiol 2020; 70:372-379. [DOI: 10.1111/lam.13283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/05/2020] [Accepted: 02/06/2020] [Indexed: 12/31/2022]
Affiliation(s)
- P. Suárez
- Departamento de Biología de Organismos Universidad Simón Bolívar (USB) Caracas Venezuela
| | - A.V. Gutiérrez
- Centro de Biofísica y Bioquímica Instituto Venezolano de Investigaciones Científicas (IVIC) Caracas Venezuela
| | - V. Salazar
- Centro de Biofísica y Bioquímica Instituto Venezolano de Investigaciones Científicas (IVIC) Caracas Venezuela
| | - M.L. Puche
- Centro de Ingeniería de Materiales y Nanotecnología (CIMN) IVIC Caracas Venezuela
| | - Y. Serrano
- Departamento de Biología de Organismos Universidad Simón Bolívar (USB) Caracas Venezuela
| | - S. Martínez
- Departamento de Biología de Organismos Universidad Simón Bolívar (USB) Caracas Venezuela
| | - G. González
- Centro de Ingeniería de Materiales y Nanotecnología (CIMN) IVIC Caracas Venezuela
- Escuela de Ciencias Físicas y Nanotecnología Yachay Tech Urcuquí Ecuador
| | - M. Fernández‐Delgado
- Centro de Biofísica y Bioquímica Instituto Venezolano de Investigaciones Científicas (IVIC) Caracas Venezuela
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3
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Draft Genome Sequences of Five Proteobacteria Isolated from Lechuguilla Cave, New Mexico, USA, and Insights into Taxonomy and Quorum Sensing. Microbiol Resour Announc 2019; 8:8/40/e00913-19. [PMID: 31582457 PMCID: PMC6776774 DOI: 10.1128/mra.00913-19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Genomic resources remain scarce for bacteria isolated from oligotrophic caves. We sequenced the genomes of five Proteobacteria isolated from Lechuguilla Cave in New Mexico. Genome-based phylogeny indicates that each strain belongs to a distinct genus. Two Rhizobiaceae isolates possess genomic potential for the biosynthesis of acyl-homoserine lactone. Genomic resources remain scarce for bacteria isolated from oligotrophic caves. We sequenced the genomes of five Proteobacteria isolated from Lechuguilla Cave in New Mexico. Genome-based phylogeny indicates that each strain belongs to a distinct genus. Two Rhizobiaceae isolates possess genomic potential for the biosynthesis of acyl-homoserine lactone.
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Csuka P, Juhász V, Kohári S, Filip A, Varga A, Sátorhelyi P, Bencze LC, Barton H, Paizs C, Poppe L. Pseudomonas fluorescensStrain R124 Encodes Three Different MIO Enzymes. Chembiochem 2018; 19:411-418. [DOI: 10.1002/cbic.201700530] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Pál Csuka
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Műegyetem rkp. 3 1111 Budapest Hungary
| | - Vivien Juhász
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Műegyetem rkp. 3 1111 Budapest Hungary
| | - Szabolcs Kohári
- Fermentia Microbiological Ltd; Berlini út 47-49 1049 Budapest Hungary
| | - Alina Filip
- Biocatalysis and Biotransformation Research Center; Faculty of Chemistry and Chemical Engineering; Babeş-Bolyai University of Cluj-Napoca; Arany János str. 11 400028 Cluj-Napoca Romania
| | - Andrea Varga
- Biocatalysis and Biotransformation Research Center; Faculty of Chemistry and Chemical Engineering; Babeş-Bolyai University of Cluj-Napoca; Arany János str. 11 400028 Cluj-Napoca Romania
| | - Péter Sátorhelyi
- Fermentia Microbiological Ltd; Berlini út 47-49 1049 Budapest Hungary
| | - László Csaba Bencze
- Biocatalysis and Biotransformation Research Center; Faculty of Chemistry and Chemical Engineering; Babeş-Bolyai University of Cluj-Napoca; Arany János str. 11 400028 Cluj-Napoca Romania
| | - Hazel Barton
- Department of Biology; The University of Akron; ASEC West Tower 178 Akron OH 44325 USA
| | - Csaba Paizs
- Biocatalysis and Biotransformation Research Center; Faculty of Chemistry and Chemical Engineering; Babeş-Bolyai University of Cluj-Napoca; Arany János str. 11 400028 Cluj-Napoca Romania
| | - László Poppe
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Műegyetem rkp. 3 1111 Budapest Hungary
- Biocatalysis and Biotransformation Research Center; Faculty of Chemistry and Chemical Engineering; Babeş-Bolyai University of Cluj-Napoca; Arany János str. 11 400028 Cluj-Napoca Romania
- SynBiocat Ltd; Szilasliget u. 3 1172 Budapest Hungary
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5
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Scales BS, Erb-Downward JR, Huffnagle IM, LiPuma JJ, Huffnagle GB. Comparative genomics of Pseudomonas fluorescens subclade III strains from human lungs. BMC Genomics 2015; 16:1032. [PMID: 26644001 PMCID: PMC4672498 DOI: 10.1186/s12864-015-2261-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 11/30/2015] [Indexed: 12/22/2022] Open
Abstract
Background While the taxonomy and genomics of environmental strains from the P. fluorescens species-complex has been reported, little is known about P. fluorescens strains from clinical samples. In this report, we provide the first genomic analysis of P. fluorescens strains in which human vs. environmental isolates are compared. Results Seven P. fluorescens strains were isolated from respiratory samples from cystic fibrosis (CF) patients. The clinical strains could grow at a higher temperature (>34 °C) than has been reported for environmental strains. Draft genomes were generated for all of the clinical strains, and multi-locus sequence analysis placed them within subclade III of the P. fluorescens species-complex. All strains encoded type- II, −III, −IV, and -VI secretion systems, as well as the widespread colonization island (WCI). This is the first description of a WCI in P. fluorescens strains. All strains also encoded a complete I2/PfiT locus and showed evidence of horizontal gene transfer. The clinical strains were found to differ from the environmental strains in the number of genes involved in metal resistance, which may be a possible adaptation to chronic antibiotic exposure in the CF lung. Conclusions This is the largest comparative genomics analysis of P. fluorescens subclade III strains to date and includes the first clinical isolates. At a global level, the clinical P. fluorescens subclade III strains were largely indistinguishable from environmental P. fluorescens subclade III strains, supporting the idea that identifying strains as ‘environmental’ vs ‘clinical’ is not a phenotypic trait. Rather, strains within P. fluorescens subclade III will colonize and persist in any niche that provides the requirements necessary for growth. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-2261-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Brittan S Scales
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA. .,Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.
| | - John R Erb-Downward
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.
| | - Ian M Huffnagle
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.
| | - John J LiPuma
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI, USA.
| | - Gary B Huffnagle
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA. .,Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, USA.
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Draft Genome Sequences of Five Pseudomonas fluorescens Subclade I and II Strains, Isolated from Human Respiratory Samples. GENOME ANNOUNCEMENTS 2015; 3:3/4/e00837-15. [PMID: 26227600 PMCID: PMC4520898 DOI: 10.1128/genomea.00837-15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report the draft genomes of five Pseudomonas fluorescens strains, isolated from clinical samples. Phylogenetic analysis places three in subclade I and two in subclade II of the P. fluorescens species complex. The average G+C content and genomic size are 63% and 7.1 Mbp (subclade I) and 59.6% and 6.14 Mbp (subclade II), respectively.
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7
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Microbiology, genomics, and clinical significance of the Pseudomonas fluorescens species complex, an unappreciated colonizer of humans. Clin Microbiol Rev 2015; 27:927-48. [PMID: 25278578 DOI: 10.1128/cmr.00044-14] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Pseudomonas fluorescens is not generally considered a bacterial pathogen in humans; however, multiple culture-based and culture-independent studies have identified it at low levels in the indigenous microbiota of various body sites. With recent advances in comparative genomics, many isolates originally identified as the "species" P. fluorescens are now being reclassified as novel Pseudomonas species within the P. fluorescens "species complex." Although most widely studied for its role in the soil and the rhizosphere, P. fluorescens possesses a number of functional traits that provide it with the capability to grow and thrive in mammalian hosts. While significantly less virulent than P. aeruginosa, P. fluorescens can cause bacteremia in humans, with most reported cases being attributable either to transfusion of contaminated blood products or to use of contaminated equipment associated with intravenous infusions. Although not suspected of being an etiologic agent of pulmonary disease, there are a number of reports identifying it in respiratory samples. There is also an intriguing association between P. fluorescens and human disease, in that approximately 50% of Crohn's disease patients develop serum antibodies to P. fluorescens. Altogether, these reports are beginning to highlight a far more common, intriguing, and potentially complex association between humans and P. fluorescens during health and disease.
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Draft Genome Sequence of Se(IV)-Reducing Bacterium Pseudomonas migulae ES3-33. GENOME ANNOUNCEMENTS 2015; 3:3/3/e00406-15. [PMID: 25953191 PMCID: PMC4424307 DOI: 10.1128/genomea.00406-15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Pseudomonas migulae ES3-33 is a Gram-negative strain that strongly reduces Se(IV) and was isolated from a selenium mining area in Enshi, southwest China. Here we present the draft genome of this strain containing potential genes involved in selenite reduction and a large number of genes encoding resistances to copper and antibiotics.
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9
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Dávila Costa JS, Leichert L, Alvarez HM, Herrero OM. Label-free and redox proteomic analyses of the triacylglycerol-accumulating Rhodococcus jostii RHA1. Microbiology (Reading) 2015; 161:593-610. [DOI: 10.1099/mic.0.000028] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Whole-Genome Sequences of Five Oligotrophic Bacteria Isolated from Deep within Lechuguilla Cave, New Mexico. GENOME ANNOUNCEMENTS 2014; 2:2/6/e01133-14. [PMID: 25377711 PMCID: PMC4223462 DOI: 10.1128/genomea.01133-14] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Here, we report the whole-genome sequences and annotation of five oligotrophic bacteria from two sites within the Lechuguilla Cave in the Carlsbad Caverns National Park, NM. Three of the five genomes contain an acyl-homoserine lactone signal synthase ortholog (luxI) that is involved in cell-to-cell communication via quorum sensing.
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Ghequire MGK, De Mot R. Ribosomally encoded antibacterial proteins and peptides from Pseudomonas. FEMS Microbiol Rev 2014; 38:523-68. [PMID: 24923764 DOI: 10.1111/1574-6976.12079] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 05/05/2014] [Accepted: 05/16/2014] [Indexed: 12/26/2022] Open
Abstract
Members of the Pseudomonas genus produce diverse secondary metabolites affecting other bacteria, fungi or predating nematodes and protozoa but are also equipped with the capacity to secrete different types of ribosomally encoded toxic peptides and proteins, ranging from small microcins to large tailocins. Studies with the human pathogen Pseudomonas aeruginosa have revealed that effector proteins of type VI secretion systems are part of the antibacterial armamentarium deployed by pseudomonads. A novel class of antibacterial proteins with structural similarity to plant lectins was discovered by studying antagonism among plant-associated Pseudomonas strains. A genomic perspective on pseudomonad bacteriocinogeny shows that the modular architecture of S pyocins of P. aeruginosa is retained in a large diversified group of bacteriocins, most of which target DNA or RNA. Similar modularity is present in as yet poorly characterized Rhs (recombination hot spot) proteins and CDI (contact-dependent inhibition) proteins. Well-delimited domains for receptor recognition or cytotoxicity enable the design of chimeric toxins with novel functionalities, which has been applied successfully for S and R pyocins. Little is known regarding how these antibacterials are released and ultimately reach their targets. Other remaining issues concern the identification of environmental triggers activating these systems and assessment of their ecological impact in niches populated by pseudomonads.
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Abstract
Microbes commonly live in dense surface-attached communities where cells layer on top of one another such that only those at the edges have unimpeded access to limiting nutrients and space. Theory predicts that this simple spatial effect, akin to plants competing for light in a forest, generates strong natural selection on microbial phenotypes. However, we require direct empirical tests of the importance of this spatial structuring. Here we show that spontaneous mutants repeatedly arise, push their way to the surface, and dominate colonies of the bacterium Pseudomonas fluorescens Pf0-1. Microscopy and modeling suggests that these mutants use secretions to expand and push themselves up to the growth surface to gain the best access to oxygen. Physically mixing the cells in the colony, or introducing space limitations, largely removes the mutant's advantage, showing a key link between fitness and the ability of the cells to position themselves in the colony. We next follow over 500 independent adaptation events and show that all occur through mutation of a single repressor of secretions, RsmE, but that the mutants differ in competitiveness. This process allows us to map the genetic basis of their adaptation at high molecular resolution and we show how evolutionary competitiveness is explained by the specific effects of each mutation. By combining population level and molecular analyses, we demonstrate how living in dense microbial communities can generate strong natural selection to reach the growing edge.
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