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Razvi E, Whitfield GB, Reichhardt C, Dreifus JE, Willis AR, Gluscencova OB, Gloag ES, Awad TS, Rich JD, da Silva DP, Bond W, Le Mauff F, Sheppard DC, Hatton BD, Stoodley P, Reinke AW, Boulianne GL, Wozniak DJ, Harrison JJ, Parsek MR, Howell PL. Glycoside hydrolase processing of the Pel polysaccharide alters biofilm biomechanics and Pseudomonas aeruginosa virulence. NPJ Biofilms Microbiomes 2023; 9:7. [PMID: 36732330 PMCID: PMC9894940 DOI: 10.1038/s41522-023-00375-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 01/16/2023] [Indexed: 02/04/2023] Open
Abstract
Pel exopolysaccharide biosynthetic loci are phylogenetically widespread biofilm matrix determinants in bacteria. In Pseudomonas aeruginosa, Pel is crucial for cell-to-cell interactions and reducing susceptibility to antibiotic and mucolytic treatments. While genes encoding glycoside hydrolases have long been linked to biofilm exopolysaccharide biosynthesis, their physiological role in biofilm development is unclear. Here we demonstrate that the glycoside hydrolase activity of P. aeruginosa PelA decreases adherent biofilm biomass and is responsible for generating the low molecular weight secreted form of the Pel exopolysaccharide. We show that the generation of secreted Pel contributes to the biomechanical properties of the biofilm and decreases the virulence of P. aeruginosa in Caenorhabditis elegans and Drosophila melanogaster. Our results reveal that glycoside hydrolases found in exopolysaccharide biosynthetic systems can help shape the soft matter attributes of a biofilm and propose that secreted matrix components be referred to as matrix associated to better reflect their influence.
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Affiliation(s)
- Erum Razvi
- Program in Molecular Medicine, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Biochemistry, University of Toronto, Toronto, ON, Canada
| | - Gregory B Whitfield
- Program in Molecular Medicine, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Biochemistry, University of Toronto, Toronto, ON, Canada
- Département de Microbiologie, Infectiologie, et Immunologie, Faculté de Médecine Université de Montréal, Montréal, QC, Canada
| | - Courtney Reichhardt
- Department of Microbiology, University of Washington, Seattle, WA, USA
- Department of Chemistry, Washington University, St. Louis, MO, USA
| | - Julia E Dreifus
- Department of Microbiology, University of Washington, Seattle, WA, USA
| | - Alexandra R Willis
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Oxana B Gluscencova
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Erin S Gloag
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, 43210, USA
- Department of Biomedical Sciences and Pathobiology, VA-MD College of Veterinary Medicine, Virginia Tech, VA, 24061, USA
| | - Tarek S Awad
- Department of Materials Science and Engineering, University of Toronto, Toronto, ON, Canada
| | - Jacquelyn D Rich
- Department of Biological Sciences, University of Calgary, Calgary, AB, Canada
| | - Daniel Passos da Silva
- Department of Microbiology, University of Washington, Seattle, WA, USA
- BioVectra Inc. 11 Aviation, Charlottetown, PE, Canada
| | - Whitney Bond
- Department of Microbiology, University of Washington, Seattle, WA, USA
| | - François Le Mauff
- Department of Microbiology and Immunology, Faculty of Medicine, McGill University, Montreal, QC, Canada
- Infectious Disease and Immunity in Global Health, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- McGill Interdisciplinary Initiative in Infection and Immunity, Montreal, QC, Canada
| | - Donald C Sheppard
- Department of Microbiology and Immunology, Faculty of Medicine, McGill University, Montreal, QC, Canada
- Infectious Disease and Immunity in Global Health, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- McGill Interdisciplinary Initiative in Infection and Immunity, Montreal, QC, Canada
| | - Benjamin D Hatton
- Department of Materials Science and Engineering, University of Toronto, Toronto, ON, Canada
| | - Paul Stoodley
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, 43210, USA
- Department of Orthopedics, The Ohio State University, Columbus, OH, 43210, USA
- National Biofilm Innovation Centre (NBIC) and National Centre for Advanced Tribology at Southampton (nCATS), University of Southampton, Southampton, SO17 1BJ, UK
- Department of Microbiology, The Ohio State University, Columbus, OH, 43210, USA
| | - Aaron W Reinke
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Gabrielle L Boulianne
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Daniel J Wozniak
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, 43210, USA
- Department of Microbiology, The Ohio State University, Columbus, OH, 43210, USA
| | - Joe J Harrison
- Department of Biological Sciences, University of Calgary, Calgary, AB, Canada
| | - Matthew R Parsek
- Department of Microbiology, University of Washington, Seattle, WA, USA
| | - P Lynne Howell
- Program in Molecular Medicine, The Hospital for Sick Children, Toronto, ON, Canada.
- Department of Biochemistry, University of Toronto, Toronto, ON, Canada.
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Rupel K, Zupin L, Ottaviani G, Bertani I, Martinelli V, Porrelli D, Vodret S, Vuerich R, Passos da Silva D, Bussani R, Crovella S, Parsek M, Venturi V, Di Lenarda R, Biasotto M, Zacchigna S. Blue laser light inhibits biofilm formation in vitro and in vivo by inducing oxidative stress. NPJ Biofilms Microbiomes 2019; 5:29. [PMID: 31602310 PMCID: PMC6785554 DOI: 10.1038/s41522-019-0102-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 09/02/2019] [Indexed: 11/09/2022] Open
Abstract
Resolution of bacterial infections is often hampered by both resistance to conventional antibiotic therapy and hiding of bacterial cells inside biofilms, warranting the development of innovative therapeutic strategies. Here, we report the efficacy of blue laser light in eradicating Pseudomonas aeruginosa cells, grown in planktonic state, agar plates and mature biofilms, both in vitro and in vivo, with minimal toxicity to mammalian cells and tissues. Results obtained using knock-out mutants point to oxidative stress as a relevant mechanism by which blue laser light exerts its anti-microbial effect. Finally, the therapeutic potential is confirmed in a mouse model of skin wound infection. Collectively, these data set blue laser phototherapy as an innovative approach to inhibit bacterial growth and biofilm formation, and thus as a realistic treatment option for superinfected wounds.
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Affiliation(s)
- Katia Rupel
- 1Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy
| | - Luisa Zupin
- 1Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy
| | - Giulia Ottaviani
- 1Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy
| | - Iris Bertani
- 2Bacteriology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34149 Trieste, Italy
| | - Valentina Martinelli
- 3Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34149 Trieste, Italy
| | - Davide Porrelli
- 1Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy
| | - Simone Vodret
- 3Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34149 Trieste, Italy
| | - Roman Vuerich
- 3Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34149 Trieste, Italy
| | | | - Rossana Bussani
- 1Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy
| | - Sergio Crovella
- 1Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy.,5Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", 34137 Trieste, Italy
| | - Matthew Parsek
- 4Department of Microbiology, University of Washington, Seattle, WA 98195 USA
| | - Vittorio Venturi
- 2Bacteriology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34149 Trieste, Italy
| | - Roberto Di Lenarda
- 1Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy
| | - Matteo Biasotto
- 1Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy
| | - Serena Zacchigna
- 1Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy.,3Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34149 Trieste, Italy
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Passos da Silva D, Matwichuk ML, Townsend DO, Reichhardt C, Lamba D, Wozniak DJ, Parsek MR. The Pseudomonas aeruginosa lectin LecB binds to the exopolysaccharide Psl and stabilizes the biofilm matrix. Nat Commun 2019; 10:2183. [PMID: 31097723 PMCID: PMC6522473 DOI: 10.1038/s41467-019-10201-4] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 04/12/2019] [Indexed: 11/09/2022] Open
Abstract
Pseudomonas aeruginosa biofilms are composed of exopolysaccharides (EPS), exogenous DNA, and proteins that hold these communities together. P. aeruginosa produces lectins LecA and LecB, which possess affinities towards sugars found in matrix EPS and mediate adherence of P. aeruginosa to target host cells. Here, we demonstrate that LecB binds to Psl, a key matrix EPS, and this leads to increased retention of both cells and EPS in a growing biofilm. This interaction is predicted to occur between the lectin and the branched side chains present on Psl. Finally, we show that LecB coordinates Psl localization in the biofilm. This constitutes a unique function for LecB and identifies it as a matrix protein that contributes to biofilm structure through EPS interactions.
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Affiliation(s)
| | | | | | | | - Doriano Lamba
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Sede Secondaria di Basovizza, Trieste, Italy
| | - Daniel J Wozniak
- Departments of Microbial Infection and Immunity, Microbiology, Ohio State University, Columbus, OH, USA
| | - Matthew R Parsek
- Department of Microbiology, University of Washington, Seattle, WA, USA.
- Integrative Microbiology Research Centre, South China Agricultural University, 510642, Guangzhou, China.
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Reichhardt C, Wong C, Passos da Silva D, Wozniak DJ, Parsek MR. CdrA Interactions within the Pseudomonas aeruginosa Biofilm Matrix Safeguard It from Proteolysis and Promote Cellular Packing. mBio 2018; 9:e01376-18. [PMID: 30254118 PMCID: PMC6156197 DOI: 10.1128/mbio.01376-18] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 08/13/2018] [Indexed: 11/20/2022] Open
Abstract
Biofilms are robust multicellular aggregates of bacteria that are encased in an extracellular matrix. Different bacterial species have been shown to use a range of biopolymers to build their matrices. Pseudomonas aeruginosa is a model organism for the laboratory study of biofilms, and past work has suggested that exopolysaccharides are a required matrix component. However, we found that expression of the matrix protein CdrA, in the absence of biofilm exopolysaccharides, allowed biofilm formation through the production of a CdrA-rich proteinaceous matrix. This represents a novel function for CdrA. Similar observations have been made for other species such as Escherichia coli and Staphylococcus aureus, which can utilize protein-dominant biofilm matrices. However, we found that these CdrA-containing matrices were susceptible to both exogenous and self-produced proteases. We previously reported that CdrA directly binds the biofilm matrix exopolysaccharide Psl. Now we have found that when CdrA bound to Psl, it was protected from proteolysis. Together, these results support the idea of the importance of multibiomolecular components in matrix stability and led us to propose a model in which CdrA-CdrA interactions can enhance cell-cell packing in an aggregate that is resistant to physical shear, while Psl-CdrA interactions enhance aggregate integrity in the presence of self-produced and exogenous proteases.IMPORTANCEPseudomonas aeruginosa forms multicellular aggregates or biofilms using both exopolysaccharides and the CdrA matrix adhesin. We showed for the first time that P. aeruginosa can use CdrA to build biofilms that do not require known matrix exopolysaccharides. It is appreciated that biofilm growth is protective against environmental assaults. However, little is known about how the interactions between individual matrix components aid in this protection. We found that interactions between CdrA and the exopolysaccharide Psl fortify the matrix by preventing CdrA proteolysis. When both components-CdrA and Psl-are part of the matrix, robust aggregates form that are tightly packed and protease resistant. These findings provide insight into how biofilms persist in protease-rich host environments.
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Affiliation(s)
- Courtney Reichhardt
- Department of Microbiology, University of Washington, Seattle, Washington, USA
| | - Cynthis Wong
- Department of Microbiology, University of Washington, Seattle, Washington, USA
| | | | - Daniel J Wozniak
- Departments of Microbial Infection and Immunity, Microbiology, The Ohio State University, Columbus, Ohio, USA
| | - Matthew R Parsek
- Department of Microbiology, University of Washington, Seattle, Washington, USA
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Reichhardt C, Wong C, da Silva DP, Wozniak DJ, Parsek MR. Both Cell-Associated and Secreted Forms of the P. aeruginosa Adhesin CDRA Promote Biofilm Formation. Biophys J 2018. [DOI: 10.1016/j.bpj.2017.11.1272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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da Silva DP, Patel HK, González JF, Devescovi G, Meng X, Covaceuszach S, Lamba D, Subramoni S, Venturi V. Studies on synthetic LuxR solo hybrids. Front Cell Infect Microbiol 2015; 5:52. [PMID: 26151032 PMCID: PMC4471428 DOI: 10.3389/fcimb.2015.00052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Accepted: 05/26/2015] [Indexed: 11/13/2022] Open
Abstract
A sub-group of LuxR family of proteins that plays important roles in quorum sensing, a process of cell-cell communication, is widespread in proteobacteria. These proteins have a typical modular structure consisting of N-ter autoinducer binding and C-ter helix-turn-helix (HTH) DNA binding domains. The autoinducer binding domain recognizes signaling molecules which are most often N-acyl homoserine lactones (AHLs) but could also be other novel and yet unidentified molecules. In this study we carried out a series of specific domain swapping and promoter activation experiments as a first step to engineer synthetic signaling modules, taking advantage of the modularity and the versatile/diverse signal specificities of LuxR proteins. In our experiments the N-ter domains from different LuxR homologs were either interchanged or placed in tandem followed by a C-ter domain. The rational design of the hybrid proteins was supported by a structure-based homology modeling studies of three members of the LuxR family (i.e., LasR, RhlR, and OryR being chosen for their unique ligand binding specificities) and of selected chimeras. Our results reveal that these LuxR homologs were able to activate promoter elements that were not their usual targets; we also show that hybrid LuxR proteins retained the ability to recognize the signal specific for their N- ter autoinducer binding domain. However, the activity of hybrid LuxR proteins containing two AHL binding domains in tandem appears to depend on the organization and nature of the introduced domains. This study represents advances in the understanding of the modularity of LuxR proteins and provides additional possibilities to use hybrid proteins in both basic and applied synthetic biology based research.
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Affiliation(s)
- Daniel Passos da Silva
- Bacteriology and Plant Bacteriology, International Centre for Genetic Engineering and Biotechnology Trieste, Italy ; Centro de Ciencias da Saude, Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro Rio de Janeiro, Brazil
| | - Hitendra K Patel
- Bacteriology and Plant Bacteriology, International Centre for Genetic Engineering and Biotechnology Trieste, Italy
| | - Juan F González
- Bacteriology and Plant Bacteriology, International Centre for Genetic Engineering and Biotechnology Trieste, Italy
| | - Giulia Devescovi
- Bacteriology and Plant Bacteriology, International Centre for Genetic Engineering and Biotechnology Trieste, Italy
| | - Xianfa Meng
- Bacteriology and Plant Bacteriology, International Centre for Genetic Engineering and Biotechnology Trieste, Italy
| | - Sonia Covaceuszach
- Istituto di Cristallografia, Unità Organizzativa di Supporto di Basovizza (Trieste), Consiglio Nazionale delle Ricerche Trieste, Italy
| | - Doriano Lamba
- Istituto di Cristallografia, Unità Organizzativa di Supporto di Basovizza (Trieste), Consiglio Nazionale delle Ricerche Trieste, Italy
| | - Sujatha Subramoni
- Bacteriology and Plant Bacteriology, International Centre for Genetic Engineering and Biotechnology Trieste, Italy
| | - Vittorio Venturi
- Bacteriology and Plant Bacteriology, International Centre for Genetic Engineering and Biotechnology Trieste, Italy
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Buonaurio R, Moretti C, da Silva DP, Cortese C, Ramos C, Venturi V. The olive knot disease as a model to study the role of interspecies bacterial communities in plant disease. Front Plant Sci 2015; 6:434. [PMID: 26113855 PMCID: PMC4461811 DOI: 10.3389/fpls.2015.00434] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 05/27/2015] [Indexed: 05/03/2023]
Abstract
There is an increasing interest in studying interspecies bacterial interactions in diseases of animals and plants as it is believed that the great majority of bacteria found in nature live in complex communities. Plant pathologists have thus far mainly focused on studies involving single species or on their interactions with antagonistic competitors. A bacterial disease used as model to study multispecies interactions is the olive knot disease, caused by Pseudomonas savastanoi pv. savastanoi (Psv). Knots caused by Psv in branches and other aerial parts of the olive trees are an ideal niche not only for the pathogen but also for many other plant-associated bacterial species, mainly belonging to the genera Pantoea, Pectobacterium, Erwinia, and Curtobacterium. The non-pathogenic bacterial species Erwinia toletana, Pantoea agglomerans, and Erwinia oleae, which are frequently isolated inside the olive knots, cooperate with Psv in modulating the disease severity. Co-inoculations of these species with Psv result in bigger knots and better bacterial colonization when compared to single inoculations. Moreover, harmless bacteria co-localize with the pathogen inside the knots, indicating the formation of stable bacterial consortia that may facilitate the exchange of quorum sensing signals and metabolites. Here we discuss the possible role of bacterial communities in the establishment and development of olive knot disease, which we believe could be taking place in many other bacterial plant diseases.
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Affiliation(s)
- Roberto Buonaurio
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
- *Correspondence: Roberto Buonaurio, Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Via Borgo XX Giugno, 74 06121 Perugia, Italy,
| | - Chiaraluce Moretti
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | | | - Chiara Cortese
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Perugia, Italy
| | - Cayo Ramos
- Instituto de Hortofruticultura Subtropical y Mediterránea La Mayora, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Málaga, Spain
| | - Vittorio Venturi
- Bacteriology Group, International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
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Passos da Silva D, Castañeda-Ojeda MP, Moretti C, Buonaurio R, Ramos C, Venturi V. Bacterial multispecies studies and microbiome analysis of a plant disease. Microbiology (Reading) 2014; 160:556-566. [DOI: 10.1099/mic.0.074468-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Although the great majority of bacteria found in nature live in multispecies communities, microbiological studies have focused historically on single species or competition and antagonism experiments between different species. Future directions need to focus much more on microbial communities in order to better understand what is happening in the wild. We are using olive knot disease as a model to study the role and interaction of multispecies bacterial communities in disease establishment/development. In the olive knot, non-pathogenic bacterial species (e.g. Erwinia toletana) co-exist with the pathogen (Pseudomonas savastanoi pv. savastanoi); we have demonstrated cooperation among these two species via quorum sensing (QS) signal sharing. The outcome of this interaction is a more aggressive disease when co-inoculations are made compared with single inoculations. In planta experiments show that these two species co-localize in the olive knot, and this close proximity most probably facilitates exchange of QS signals and metabolites. In silico recreation of their metabolic pathways showed that they could have complementing pathways also implicating sharing of metabolites. Our microbiome studies of nine olive knot samples have shown that the olive knot community possesses great bacterial diversity; however. the presence of five genera (i.e. Pseudomonas, Pantoea, Curtobacterium, Pectobacterium and Erwinia) can be found in almost all samples.
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Affiliation(s)
| | - Maria Pilar Castañeda-Ojeda
- Instituto de Hortofruticultura Subtropical y Mediterránea ‘La Mayora’, Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Área de Genética, Facultad de Ciencias, Campus de Teatinos, Málaga, Spain
| | - Chiaraluce Moretti
- Dipartimento di Scienze Agrarie e Ambientali, Università degli Studio di Perugia, Perugia, Italy
| | - Roberto Buonaurio
- Dipartimento di Scienze Agrarie e Ambientali, Università degli Studio di Perugia, Perugia, Italy
| | - Cayo Ramos
- Instituto de Hortofruticultura Subtropical y Mediterránea ‘La Mayora’, Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Área de Genética, Facultad de Ciencias, Campus de Teatinos, Málaga, Spain
| | - Vittorio Venturi
- International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
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Bertani I, Passos da Silva D, Abbruscato P, Piffanelli P, Venturi V. Draft Genome Sequence of the Plant Pathogen Dickeya zeae DZ2Q, Isolated from Rice in Italy. Genome Announc 2013; 1:e00905-13. [PMID: 24201194 PMCID: PMC3820775 DOI: 10.1128/genomea.00905-13] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 10/04/2013] [Indexed: 11/30/2022]
Abstract
Dickeya zeae is an emerging rice (Oryza sativa) pathogen causing bacterial foot rot. Related pathogens affect maize (Zea mays) and potato (Solanum tuberosum) and a variety of important ornamental and floral plants. Here, we present the draft genome sequence of D. zeae DZ2Q, an isolate obtained from rice grown in Italy.
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Affiliation(s)
- Iris Bertani
- Bacteriology Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Daniel Passos da Silva
- Bacteriology Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Pamela Abbruscato
- Rice Genomics Unit, Parco Tecnologico Padano, Localita Cascina Codazza, Lodi, Italy
| | - Pietro Piffanelli
- Rice Genomics Unit, Parco Tecnologico Padano, Localita Cascina Codazza, Lodi, Italy
| | - Vittorio Venturi
- Bacteriology Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
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Abstract
Microbial diseases occur as a result of multifarious host-pathogen interactions. However, invading pathogens encounter a large number of different harmless and beneficial bacterial species, which colonize and reside in the host. Surprisingly, there has been little study of the possible interactions between incoming pathogens and the resident bacterial community. Recent studies have revealed that resident bacteria assist different types of incoming pathogens via a wide variety of mechanisms including cell-cell signaling, metabolic interactions, evasion of the immune response and a resident-to-pathogen switch. This calls for serious consideration of pathogen-microbe interactions in the host with respect to disease severity and progression.
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Affiliation(s)
- Vittorio Venturi
- International Centre for Genetic Engineering and Biotechnology, Padriciano 99, 34149 Trieste, Italy.
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