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Sýkorová P, Novotná J, Demo G, Pompidor G, Dubská E, Komárek J, Fujdiarová E, Houser J, Hároníková L, Varrot A, Shilova N, Imberty A, Bovin N, Pokorná M, Wimmerová M. Characterization of novel lectins from Burkholderia pseudomallei and Chromobacterium violaceum with seven-bladed β-propeller fold. Int J Biol Macromol 2020; 152:1113-1124. [DOI: 10.1016/j.ijbiomac.2019.10.200] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 10/22/2019] [Accepted: 10/23/2019] [Indexed: 01/08/2023]
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Castro D, Cordeiro IB, Taquita P, Eberlin MN, Garcia JS, Souza GHMF, Arruda MAZ, Andrade EV, Filho SA, Crainey JL, Lozano LL, Nogueira PA, Orlandi PP. Proteomic analysis of Chromobacterium violaceum and its adaptability to stress. BMC Microbiol 2015; 15:272. [PMID: 26627076 PMCID: PMC4666173 DOI: 10.1186/s12866-015-0606-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 11/24/2015] [Indexed: 12/15/2022] Open
Abstract
Background Chromobacterium violaceum (C. violaceum) occurs abundantly in a variety of ecosystems, including ecosystems that place the bacterium under stress. This study assessed the adaptability of C. violaceum by submitting it to nutritional and pH stresses and then analyzing protein expression using bi-dimensional electrophoresis (2-DE) and Maldi mass spectrometry. Results Chromobacterium violaceum grew best in pH neutral, nutrient-rich medium (reference conditions); however, the total protein mass recovered from stressed bacteria cultures was always higher than the total protein mass recovered from our reference culture. The diversity of proteins expressed (repressed by the number of identifiable 2-DE spots) was seen to be highest in the reference cultures, suggesting that stress reduces the overall range of proteins expressed by C. violaceum. Database comparisons allowed 43 of the 55 spots subjected to Maldi mass spectrometry to be characterized as containing a single identifiable protein. Stress-related expression changes were noted for C. violaceum proteins related to the previously characterized bacterial proteins: DnaK, GroEL-2, Rhs, EF-Tu, EF-P; MCP, homogentisate 1,2-dioxygenase, Arginine deiminase and the ATP synthase β-subunit protein as well as for the ribosomal protein subunits L1, L3, L5 and L6. The ability of C. violaceum to adapt its cellular mechanics to sub-optimal growth and protein production conditions was well illustrated by its regulation of ribosomal protein subunits. With the exception of the ribosomal subunit L3, which plays a role in protein folding and maybe therefore be more useful in stressful conditions, all the other ribosomal subunit proteins were seen to have reduced expression in stressed cultures. Curiously, C. violeaceum cultures were also observed to lose their violet color under stress, which suggests that the violacein pigment biosynthetic pathway is affected by stress. Conclusions Analysis of the proteomic signatures of stressed C. violaceum indicates that nutrient-starvation and pH stress can cause changes in the expression of the C. violaceum receptors, transporters, and proteins involved with biosynthetic pathways, molecule recycling, energy production. Our findings complement the recent publication of the C. violeaceum genome sequence and could help with the future commercial exploitation of C. violeaceum. Electronic supplementary material The online version of this article (doi:10.1186/s12866-015-0606-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Diogo Castro
- Instituto Leônidas e Maria Deane - ILMD- Fiocruz, 476 Teresina St., 69057-070, Manaus, AM, Brazil. .,Universidade Estadual do Amazonas, 3578 Djalma Batista Av., 69050-010, Manaus, AM, Brazil.
| | - Isabelle Bezerra Cordeiro
- Universidade Estadual de Campinas, Institute of Chemistry, Thomson Mass Spectrometry Laboratory PO and Spectrometry, Sample Preparation and Mechanization Group (GEPAM), 13084-971, Campinas, SP, Brazil. .,Universidade Estadual do Amazonas, 3578 Djalma Batista Av., 69050-010, Manaus, AM, Brazil.
| | - Paula Taquita
- Instituto Leônidas e Maria Deane - ILMD- Fiocruz, 476 Teresina St., 69057-070, Manaus, AM, Brazil.
| | - Marcos Nogueira Eberlin
- Universidade Estadual de Campinas, Institute of Chemistry, Thomson Mass Spectrometry Laboratory PO and Spectrometry, Sample Preparation and Mechanization Group (GEPAM), 13084-971, Campinas, SP, Brazil.
| | - Jerusa Simone Garcia
- Universidade Estadual de Campinas, Institute of Chemistry, Thomson Mass Spectrometry Laboratory PO and Spectrometry, Sample Preparation and Mechanization Group (GEPAM), 13084-971, Campinas, SP, Brazil.
| | | | - Marco Aurélio Zezzi Arruda
- Universidade Estadual de Campinas, Institute of Chemistry, Thomson Mass Spectrometry Laboratory PO and Spectrometry, Sample Preparation and Mechanization Group (GEPAM), 13084-971, Campinas, SP, Brazil.
| | - Edmar V Andrade
- Universidade Estadual do Amazonas, 3578 Djalma Batista Av., 69050-010, Manaus, AM, Brazil.
| | - Spartaco A Filho
- Universidade Estadual do Amazonas, 3578 Djalma Batista Av., 69050-010, Manaus, AM, Brazil.
| | - J Lee Crainey
- Instituto Leônidas e Maria Deane - ILMD- Fiocruz, 476 Teresina St., 69057-070, Manaus, AM, Brazil.
| | - Luis Lopez Lozano
- Biotechnology Laboratory/ Universidade Federal do Amazonas, 3000 Rodrigo Octávio Av., 69077-000, Manaus, AM, Brazil.
| | - Paulo A Nogueira
- Instituto Leônidas e Maria Deane - ILMD- Fiocruz, 476 Teresina St., 69057-070, Manaus, AM, Brazil.
| | - Patrícia P Orlandi
- Instituto Leônidas e Maria Deane - ILMD- Fiocruz, 476 Teresina St., 69057-070, Manaus, AM, Brazil.
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Aranda S, Montes-Borrego M, Landa BB. Purple-pigmented violacein-producing Duganella spp. inhabit the rhizosphere of wild and cultivated olives in southern Spain. MICROBIAL ECOLOGY 2011; 62:446-459. [PMID: 21424823 DOI: 10.1007/s00248-011-9840-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2010] [Accepted: 02/28/2011] [Indexed: 05/30/2023]
Abstract
Bacteria have evolved mechanisms that allow them to grow and survive in highly competitive environments like soil and the rhizosphere. Using classical microbiological, physiological, and genetic analyses, we isolated and identified for the first time Duganella spp. associated with the rhizosphere of woody plants in Mediterranean environments that are able to produce violacein, a blue-purple secondary metabolite of considerable biotechnological interest. Based on physiological and biochemical characterization and phylogenetic analysis of different genes including 16S rRNA, gyrB, and vioA (implicated in the synthesis of violacein), the seven Duganella spp. strains isolated and studied were differentiated according to their host of origin (wild versus cultivated olives) and potentially might belong to new species. All the Duganella spp. strains produced violacein in vitro, with natural production levels significantly higher than that previously reported for other violacein-producing bacteria without optimizing growing conditions. The important biological, medical, and industrial applications of violacein make these bacteria good candidates for their biotechnological exploitation because low violacein yields are considered as one of the main limitations of using wild-type strains for extensive exploitation and pigment production. Independent of violacein production, purple-pigmented strains from olives showed proteolytic and lipolytic activities and a weak siderophore production. No in vitro inhibitory activity was demonstrated for bacteria or crude violacein filtrates against plant-pathogenic Gram-negative bacteria and fungi, but they did inhibit Gram-positive bacteria.
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Affiliation(s)
- Sergio Aranda
- Institute for Sustainable Agriculture (IAS), Spanish National Research Council (CSIC), Alameda del Obispo, s/n, P.O. Box 4084, 14080, Córdoba, Spain
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Barreto ES, Torres AR, Barreto MR, Vasconcelos ATR, Astolfi-Filho S, Hungria M. Diversity in antifungal activity of strains of Chromobacterium violaceum from the Brazilian Amazon. J Ind Microbiol Biotechnol 2008; 35:783-90. [PMID: 18347828 DOI: 10.1007/s10295-008-0331-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2006] [Accepted: 02/13/2008] [Indexed: 11/27/2022]
Abstract
Chromobacterium violaceum is a free-living Gram-negative bacterium found in soil and aquatic habitats; abundantly present in the Brazilian Amazon, it is an important example of exploitable microbial diversity of the tropics. In this study, 24 strains from the Brazilian Amazon and ATCC 12472(T) were investigated for biocontrol potential of seven fungi pathogenic to soybean [Glycine max (L.) Merril] seed. Both cells and the supernatants of two Brazilian strains, 07-1 and 27-1, together with ATCC 12472(T) were strongly antagonistic to six out of the seven fungi. The antifungal activity of the Brazilian strains to Fusarium sp., Phomopsis sp. and Cercospora kikuchi was consistently stronger than that of ATCC 12472(T). In addition, the two Brazilian strains, but not ATCC 12472(T), were effective against Corynespora sp., and all three strains and their supernatants were equally effective against Aspergillus sp. and Colletotrichum sp. None of the strains had antifungal activity against Botroyodiplodia sp. Three potential mechanisms related to the antibiosis were investigated: violacein toxicity, cyanide production and chitinolytic activity; however, it was not possible to associate any of them with the antifungal activity. The results highlight the biotechnological potential still to be explored within the poorly characterized microbial biodiversity of the tropics.
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Broetto L, Cecagno R, Sant'anna FH, Weber S, Schrank IS. Stable transformation of Chromobacterium violaceum with a broad-host-range plasmid. Appl Microbiol Biotechnol 2006; 71:450-4. [PMID: 16172890 DOI: 10.1007/s00253-005-0140-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2005] [Revised: 08/15/2005] [Accepted: 08/18/2005] [Indexed: 11/26/2022]
Abstract
Stable transformants of Chromobacterium violaceum were obtained by high-voltage electroporation with a 7-kilobase binary plasmid. The technique was reliable, reproducible, and simple, with efficiencies of 10(5) transformants/microg of plasmid DNA. The electrical conditions that resulted in the highest efficiencies were short pulse length (4.4-4.5 ms) and high voltage (12.5 kV/cm). The numbers of transformants were almost the same during the growth exponential phase (variation at optical density) and resulted in the highest efficiencies at DNA concentration of 250 pg/ml. Saturation appeared to begin at 4 microg/ml of DNA. This method of C. violaceum transformation should enhance the genetic and biotechnological research by providing a valuable, widely used procedure of introducing DNA into this bacterium.
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Affiliation(s)
- L Broetto
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500-Prédio 43421, C.P. 15005-CEP: 91501-970, Porto Alegre, RS, Brazil
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Brown KL, Stein A, Morrell DS. Ecthyma gangrenosum and septic shock syndrome secondary to Chromobacterium violaceum. J Am Acad Dermatol 2006; 54:S224-8. [PMID: 16631946 DOI: 10.1016/j.jaad.2005.07.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2005] [Revised: 06/30/2005] [Accepted: 07/04/2005] [Indexed: 11/28/2022]
Abstract
Chromobacterium violaceum is a gram-negative bacterium of soil and water in tropical and subtropical environments. Typically, it is considered a bacterium of low virulence although, uncommonly, it causes human infection, particularly in persons with defects in host defenses. Infection generally follows exposure of broken skin to contaminated water and soil, and is often characterized by pustules, lymphadenitis, fever, and vomiting, as well as rapid dissemination and a high mortality rate. Unfortunately, because C violaceum is ubiquitous, it is often dismissed as a contaminant when cultured. Because rapid diagnosis (by taking appropriate specimens) and treatment are vital to a good prognosis, it is imperative that physicians be aware of this organism. In addition, patients with chromobacterial infections should have an immunologic workup because infections in immunocompetent individuals are rare. Here we report an aggressive yet nonfatal case of C violaceum septicemia in an adolescent male, diagnosed through a punch biopsy of a skin lesion, and resulting in a new diagnosis of chronic granulomatous disease.
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Affiliation(s)
- Katherine L Brown
- Department of Dermatology, University of North Carolina, Chapel Hill, USA.
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