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Gallardo-Benavente C, Carrión O, Todd JD, Pieretti JC, Seabra AB, Durán N, Rubilar O, Pérez-Donoso JM, Quiroz A. Biosynthesis of CdS Quantum Dots Mediated by Volatile Sulfur Compounds Released by Antarctic Pseudomonas fragi. Front Microbiol 2019; 10:1866. [PMID: 31456780 PMCID: PMC6700389 DOI: 10.3389/fmicb.2019.01866] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 07/29/2019] [Indexed: 12/13/2022] Open
Abstract
Previously we reported the biosynthesis of intracellular cadmium sulfide quantum dots (CdS QDs) at low temperatures by the Antarctic strain Pseudomonas fragi GC01. Here we studied the role of volatile sulfur compounds (VSCs) in the biosynthesis of CdS QDs by P. fragi GC01. The biosynthesis of nanoparticles was evaluated in the presence of sulfate, sulfite, thiosulfate, sulfide, cysteine and methionine as sole sulfur sources. Intracellular biosynthesis occurred with all sulfur sources tested. However, extracellular biosynthesis was observed only in cultures amended with cysteine (Cys) and methionine (Met). Extracellular nanoparticles were characterized by dynamic light scattering, absorption and emission spectra, energy dispersive X-ray, atomic force microscopy, transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. Purified QDs correspond to cubic nanocrystals of CdS with sizes between 2 and 16 nm. The analysis of VSCs revealed that P. fragi GC01 produced hydrogen sulfide (H2S), methanethiol (MeSH) and dimethyl sulfide (DMS) in the presence of sulfate, Met or Cys. Dimethyl disulfide (DMDS) was only detected in the presence of Met. Interestingly, MeSH was the main VSC produced in this condition. In addition, MeSH was the only VSC for which the concentration decreased in the presence of cadmium (Cd) of all the sulfur sources tested, suggesting that this gas interacts with Cd to form nanoparticles. The role of MeSH and DMS on Cds QDs biosynthesis was evaluated in two mutants of the Antarctic strain Pseudomonas deceptionensis M1T: megL - (unable to produce MeSH from Met) and mddA - (unable to generate DMS from MeSH). No biosynthesis of QDs was observed in the megL - strain, confirming the importance of MeSH in QD biosynthesis. In addition, the production of QDs in the mddA - strain was not affected, indicating that DMS is not a substrate for the biosynthesis of nanoparticles. Here, we confirm a link between MeSH production and CdS QDs biosynthesis when Met is used as sole sulfur source. This work represents the first report that directly associates the production of MeSH with the bacterial synthesis of QDs, thus revealing the importance of different VSCs in the biological generation of metal sulfide nanostructures.
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Affiliation(s)
- Carla Gallardo-Benavente
- Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Temuco, Chile
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile
| | - Ornella Carrión
- School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom
| | - Jonathan D. Todd
- School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
| | - Joana C. Pieretti
- Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
| | - Amedea B. Seabra
- Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
| | - Nelson Durán
- Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
- Institute of Biology, Universidade Estadual de Campinas, Campinas, Brazil
| | - Olga Rubilar
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile
- Departamento de Ingeniería Química, Universidad de La Frontera, Temuco, Chile
| | - José M. Pérez-Donoso
- BioNanotechnology and Microbiology Lab, Center for Bioinformatics and Integrative Biology, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Andrés Quiroz
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile
- Departamento de Ciencias Químicas y Recursos Naturales, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile
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Hosseinzadeh H, Bahador N. Novel CdS quantum dots templated hydrogel nanocomposites: Synthesis, characterization, swelling and dye adsorption properties. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.129] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Rezanejade Bardajee G, Hooshyar Z, Rezaei M, Khalili Khaneghah M, Fallahnejad F. Spectroscopic studies on the interactions of capped CdS quantum dots with human serum albumin (HSA) and bovine serum albumin (BSA). INORG NANO-MET CHEM 2016. [DOI: 10.1080/15533174.2016.1186098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - Zari Hooshyar
- Department of Chemistry, Payame Noor University, Tehran, Iran
| | - Marzieh Rezaei
- Department of Chemistry, Payame Noor University, Tehran, Iran
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Bardajee GR, Hooshyar Z. Interaction of a novel starch-capped CdS quantum dots with human serum albumin and bovine serum albumin. STARCH-STARKE 2015. [DOI: 10.1002/star.201500092] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | - Zari Hooshyar
- Department of Chemistry; Payame Noor University; Tehran Iran
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