Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/126288
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dc.contributor.author | Sanyal, S.K. | - |
dc.contributor.author | Reith, F. | - |
dc.contributor.author | Shuster, J. | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | FEMS Microbiology Ecology, 2020; 96(7):fiaa111-1-fiaa111-15 | - |
dc.identifier.issn | 0168-6496 | - |
dc.identifier.issn | 1574-6941 | - |
dc.identifier.uri | http://hdl.handle.net/2440/126288 | - |
dc.description | Advance Access Publication Date: 4 June 2020. | - |
dc.description.abstract | A bacterial consortium was enriched from gold particles that 'experienced' ca. 80 years of biotransformation within waste-rock piles (Australia). This bacterial consortium was exposed to 10 µM AuCl3 to obtain Au-tolerant bacteria. From these isolates, Serratia sp. and Stenotrophomonas sp. were the most Au-tolerant and reduced soluble Au as pure gold nanoparticles, indicating that passive mineralisation is a mechanism for mediating the toxic effect of soluble Au produced during particle dissolution. Genome-wide analysis demonstrated that these isolates also possessed various genes that could provide cellular defence enabling survival under heavy-metal stressed condition by mediating the toxicity of heavy metals through active efflux/reduction. Diverse metal-resistant genes or genes clusters (cop, cus, czc, znt, ars) were detected, which could confer resistance to soluble Au. Comparative genome analysis revealed that the majority of detected heavy-metal resistant genes were similar (i.e. orthologous) to those genes of Cupriavidus metallidurans CH34. The detection of heavy-metal resistance, nutrient cycling, and biofilm formation genes (pgaABCD, bsmA, hmpS) may have indirect yet important roles when dealing with soluble Au during particle dissolution. In conclusion, the physiological and genomic results suggest that bacteria living on gold particles would likely use various genes to ensure survival during Au biogeochemical cycling. | - |
dc.description.statementofresponsibility | Santonu Kumar Sanyal, Frank Reith and Jeremiah Shuster | - |
dc.language.iso | en | - |
dc.publisher | Oxford University Press (OUP) | - |
dc.rights | © FEMS 2020. All rights reserved. | - |
dc.source.uri | http://dx.doi.org/10.1093/femsec/fiaa111 | - |
dc.subject | Gold particles | - |
dc.subject | Heavy-metal resistance | - |
dc.subject | Serratia | - |
dc.subject | Stenotrophomonas | - |
dc.subject | Gold biogeochemistry | - |
dc.subject | Gold biogeochemical cycling | - |
dc.subject | Au-tolerant bacteria | - |
dc.title | A genomic perspective of metal-resistant bacteria from gold particles: Possible survival mechanisms during gold biogeochemical cycling | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1093/femsec/fiaa111 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/FT150100250 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Sanyal, S.K. [0000-0001-5049-4297] | - |
dc.identifier.orcid | Shuster, J. [0000-0002-9839-6618] | - |
Appears in Collections: | Aurora harvest 8 Microbiology and Immunology publications |
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File | Description | Size | Format | |
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hdl_126288.pdf | Accepted version | 2 MB | Adobe PDF | View/Open |
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