|
1
|
Valorization of Pichia spent medium via one-pot synthesis of biocompatible silver nanoparticles with potent antioxidant, antimicrobial, tyrosinase inhibitory and reusable catalytic activities. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 115:111104. [DOI: 10.1016/j.msec.2020.111104] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/11/2020] [Accepted: 05/18/2020] [Indexed: 02/07/2023]
|
|
2
|
Bohu T, Anand R, Noble R, Lintern M, Kaksonen AH, Mei Y, Cheng KY, Deng X, Veder JP, Bunce M, Power M, Verrall M. Evidence for fungi and gold redox interaction under Earth surface conditions. Nat Commun 2019; 10:2290. [PMID: 31123249 PMCID: PMC6533363 DOI: 10.1038/s41467-019-10006-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 04/09/2019] [Indexed: 11/11/2022] Open
Abstract
Microbial contribution to gold biogeochemical cycling has been proposed. However, studies have focused primarily on the influence of prokaryotes on gold reduction and precipitation through a detoxification-oriented mechanism. Here we show, fungi, a major driver of mineral bioweathering, can initiate gold oxidation under Earth surface conditions, which is of significance for dissolved gold species formation and distribution. Presence of the gold-oxidizing fungus TA_pink1, an isolate of Fusarium oxysporum, suggests fungi have the potential to substantially impact gold biogeochemical cycling. Our data further reveal that indigenous fungal diversity positively correlates with in situ gold concentrations. Hypocreales, the order of the gold-oxidizing fungus, show the highest centrality in the fungal microbiome of the auriferous environment. Therefore, we argue that the redox interaction between fungi and gold is critical and should be considered in gold biogeochemical cycling.
Collapse
Affiliation(s)
- Tsing Bohu
- CSIRO Mineral Resources, Australian Resources and Research Centre, Kensington, WA, 6151, Australia.
| | - Ravi Anand
- CSIRO Mineral Resources, Australian Resources and Research Centre, Kensington, WA, 6151, Australia
| | - Ryan Noble
- CSIRO Mineral Resources, Australian Resources and Research Centre, Kensington, WA, 6151, Australia
| | - Mel Lintern
- CSIRO Mineral Resources, Australian Resources and Research Centre, Kensington, WA, 6151, Australia
| | - Anna H Kaksonen
- CSIRO Land and Water, Private Bag No.5, Wembley, WA, 6913, Australia
- School of Biomedical Sciences, University of Western Australia, Crawley, WA, 6009, Australia
| | - Yuan Mei
- CSIRO Mineral Resources, Australian Resources and Research Centre, Kensington, WA, 6151, Australia
| | - Ka Yu Cheng
- CSIRO Land and Water, Private Bag No.5, Wembley, WA, 6913, Australia
- School of Engineering and Information Technology, Murdoch University, Perth, WA, 6150, Australia
| | - Xiao Deng
- CSIRO Land and Water, Private Bag No.5, Wembley, WA, 6913, Australia
| | - Jean-Pierre Veder
- John de Laeter Centre, Curtin University, Bentley, WA, 6102, Australia
| | - Michael Bunce
- Trace and Environmental DNA (TrEnD) Laboratory, Department of Environment and Agriculture, Curtin University, Bentley, WA, 6102, Australia
| | - Matthew Power
- Trace and Environmental DNA (TrEnD) Laboratory, Department of Environment and Agriculture, Curtin University, Bentley, WA, 6102, Australia
| | - Mike Verrall
- CSIRO Mineral Resources, Australian Resources and Research Centre, Kensington, WA, 6151, Australia
| |
Collapse
|