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Coast O, Posch BC, Bramley H, Gaju O, Richards RA, Lu M, Ruan YL, Trethowan R, Atkin OK. Acclimation of leaf photosynthesis and respiration to warming in field-grown wheat. PLANT, CELL & ENVIRONMENT 2021; 44:2331-2346. [PMID: 33283881 DOI: 10.1111/pce.13971] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 12/02/2020] [Indexed: 06/12/2023]
Abstract
Climate change and future warming will significantly affect crop yield. The capacity of crops to dynamically adjust physiological processes (i.e., acclimate) to warming might improve overall performance. Understanding and quantifying the degree of acclimation in field crops could ensure better parameterization of crop and Earth System models and predictions of crop performance. We hypothesized that for field-grown wheat, when measured at a common temperature (25°C), crops grown under warmer conditions would exhibit acclimation, leading to enhanced crop performance and yield. Acclimation was defined as (a) decreased rates of net photosynthesis at 25°C (A25 ) coupled with lower maximum carboxylation capacity (Vcmax25 ), (b) reduced leaf dark respiration at 25°C (both in terms of O2 consumption Rdark _O225 and CO2 efflux Rdark _CO225 ) and (c) lower Rdark _CO225 to Vcmax25 ratio. Field experiments were conducted over two seasons with 20 wheat genotypes, sown at three different planting dates, to test these hypotheses. Leaf-level CO2 -based traits (A25 , Rdark _CO225 and Vcmax25 ) did not show the classic acclimation responses that we hypothesized; by contrast, the hypothesized changes in Rdark_ O2 were observed. These findings have implications for predictive crop models that assume similar temperature response among these physiological processes and for predictions of crop performance in a future warmer world.
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Affiliation(s)
- Onoriode Coast
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, The Australian National University, Canberra, Australia
- Agriculture, Health and Environment Department, Natural Resources Institute, Faculty of Engineering and Science, University of Greenwich, Kent, UK
| | - Bradley C Posch
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, The Australian National University, Canberra, Australia
| | - Helen Bramley
- School of Life and Environmental Sciences, Plant Breeding Institute, Sydney Institute of Agriculture, The University of Sydney, Narrabri, New South Wales, Australia
| | - Oorbessy Gaju
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, The Australian National University, Canberra, Australia
- College of Science, Lincoln Institute of Agri-Food Technology, University of Lincoln, Lincolnshire, UK
| | | | - Meiqin Lu
- Australian Grain Technologies, Narrabri, New South Wales, Australia
| | - Yong-Ling Ruan
- Australia-China Research Centre for Crop Improvement and School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Richard Trethowan
- School of Life and Environmental Sciences, Plant Breeding Institute, Sydney Institute of Agriculture, The University of Sydney, Narrabri, New South Wales, Australia
- School of Life and Environmental Sciences, Plant Breeding Institute, Sydney Institute of Agriculture, The University of Sydney, Cobbitty, New South Wales, Australia
| | - Owen K Atkin
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, The Australian National University, Canberra, Australia
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Qu M, Essemine J, Li M, Chang S, Chang T, Chen GY, Zhu XG. Genome-Wide Association Study Unravels LRK1 as a Dark Respiration Regulator in Rice ( Oryza sativa L.). Int J Mol Sci 2020; 21:E4930. [PMID: 32668582 PMCID: PMC7404070 DOI: 10.3390/ijms21144930] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/04/2020] [Accepted: 07/07/2020] [Indexed: 11/16/2022] Open
Abstract
Respiration is a major plant physiological process that generates adenosine triphosphate (ATP) to support the various pathways involved in the plant growth and development. After decades of focused research on basic mechanisms of respiration, the processes and major proteins involved in respiration are well elucidated. However, much less is known about the natural variation of respiration. Here we conducted a survey on the natural variation of leaf dark respiration (Rd) in a global rice minicore diversity panel and applied a genome-wide association study (GWAS) in rice (Oryza sativa L.) to determine candidate loci associated with Rd. This rice minicore diversity panel consists of 206 accessions, which were grown under both growth room (GR) and field conditions. We found that Rd shows high single-nucleotide polymorphism (SNP) heritability under GR and it is significantly affected by genotype-environment interactions. Rd also exhibits strong positive correlation to the leaf thickness and chlorophyll content. GWAS results of Rd collected under GR and field show an overlapped genomic region in the chromosome 3 (Chr.3), which contains a lead SNP (3m29440628). There are 12 candidate genes within this region; among them, three genes show significantly higher expression levels in accessions with high Rd. Particularly, we observed that the LRK1 gene, annotated as leucine rich repeat receptor kinase, was up-regulated four times. We further found that a single significantly associated SNPs at the promoter region of LRK1, was strongly correlated with the mean annual temperature of the regions from where minicore accessions were collected. A rice lrk1 mutant shows only ~37% Rd of that of WT and retarded growth following exposure to 35 °C for 30 days, but only 24% reduction in growth was recorded under normal temperature (25 °C). This study demonstrates a substantial natural variation of Rd in rice and that the LRK1 gene can regulate leaf dark respiratory fluxes, especially under high temperature.
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Affiliation(s)
- Mingnan Qu
- State Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai 200032, China
| | - Jemaa Essemine
- State Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai 200032, China
| | - Ming Li
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Shuoqi Chang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, China
| | - Tiangen Chang
- State Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai 200032, China
| | - Gen-Yun Chen
- Laboratory of Photosynthesis and Environmental Biology, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xin-Guang Zhu
- State Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai 200032, China
- Laboratory of Photosynthesis and Environmental Biology, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
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Scafaro AP, Negrini ACA, O’Leary B, Rashid FAA, Hayes L, Fan Y, Zhang Y, Chochois V, Badger MR, Millar AH, Atkin OK. The combination of gas-phase fluorophore technology and automation to enable high-throughput analysis of plant respiration. PLANT METHODS 2017; 13:16. [PMID: 28344635 PMCID: PMC5361846 DOI: 10.1186/s13007-017-0169-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/17/2017] [Indexed: 05/18/2023]
Abstract
BACKGROUND Mitochondrial respiration in the dark (Rdark) is a critical plant physiological process, and hence a reliable, efficient and high-throughput method of measuring variation in rates of Rdark is essential for agronomic and ecological studies. However, currently methods used to measure Rdark in plant tissues are typically low throughput. We assessed a high-throughput automated fluorophore system of detecting multiple O2 consumption rates. The fluorophore technique was compared with O2-electrodes, infrared gas analysers (IRGA), and membrane inlet mass spectrometry, to determine accuracy and speed of detecting respiratory fluxes. RESULTS The high-throughput fluorophore system provided stable measurements of Rdark in detached leaf and root tissues over many hours. High-throughput potential was evident in that the fluorophore system was 10 to 26-fold faster per sample measurement than other conventional methods. The versatility of the technique was evident in its enabling: (1) rapid screening of Rdark in 138 genotypes of wheat; and, (2) quantification of rarely-assessed whole-plant Rdark through dissection and simultaneous measurements of above- and below-ground organs. DISCUSSION Variation in absolute Rdark was observed between techniques, likely due to variation in sample conditions (i.e. liquid vs. gas-phase, open vs. closed systems), indicating that comparisons between studies using different measuring apparatus may not be feasible. However, the high-throughput protocol we present provided similar values of Rdark to the most commonly used IRGA instrument currently employed by plant scientists. Together with the greater than tenfold increase in sample processing speed, we conclude that the high-throughput protocol enables reliable, stable and reproducible measurements of Rdark on multiple samples simultaneously, irrespective of plant or tissue type.
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Affiliation(s)
- Andrew P. Scafaro
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
- Bayer CropScience SA-NV, Technologiepark 38, 9052 Gent (Zwijnaarde), Belgium
| | - A. Clarissa A. Negrini
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Brendan O’Leary
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
- Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
| | - F. Azzahra Ahmad Rashid
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Lucy Hayes
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Yuzhen Fan
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - You Zhang
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Vincent Chochois
- ARC Centre of Excellence for Translational Photosynthesis, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Murray R. Badger
- ARC Centre of Excellence for Translational Photosynthesis, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - A. Harvey Millar
- Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
| | - Owen K. Atkin
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
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Scafaro AP, Negrini ACA, O'Leary B, Rashid FAA, Hayes L, Fan Y, Zhang Y, Chochois V, Badger MR, Millar AH, Atkin OK. The combination of gas-phase fluorophore technology and automation to enable high-throughput analysis of plant respiration. PLANT METHODS 2017; 13:16. [PMID: 28344635 DOI: 10.1186/s13007-017-0169-163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/17/2017] [Indexed: 05/22/2023]
Abstract
BACKGROUND Mitochondrial respiration in the dark (Rdark) is a critical plant physiological process, and hence a reliable, efficient and high-throughput method of measuring variation in rates of Rdark is essential for agronomic and ecological studies. However, currently methods used to measure Rdark in plant tissues are typically low throughput. We assessed a high-throughput automated fluorophore system of detecting multiple O2 consumption rates. The fluorophore technique was compared with O2-electrodes, infrared gas analysers (IRGA), and membrane inlet mass spectrometry, to determine accuracy and speed of detecting respiratory fluxes. RESULTS The high-throughput fluorophore system provided stable measurements of Rdark in detached leaf and root tissues over many hours. High-throughput potential was evident in that the fluorophore system was 10 to 26-fold faster per sample measurement than other conventional methods. The versatility of the technique was evident in its enabling: (1) rapid screening of Rdark in 138 genotypes of wheat; and, (2) quantification of rarely-assessed whole-plant Rdark through dissection and simultaneous measurements of above- and below-ground organs. DISCUSSION Variation in absolute Rdark was observed between techniques, likely due to variation in sample conditions (i.e. liquid vs. gas-phase, open vs. closed systems), indicating that comparisons between studies using different measuring apparatus may not be feasible. However, the high-throughput protocol we present provided similar values of Rdark to the most commonly used IRGA instrument currently employed by plant scientists. Together with the greater than tenfold increase in sample processing speed, we conclude that the high-throughput protocol enables reliable, stable and reproducible measurements of Rdark on multiple samples simultaneously, irrespective of plant or tissue type.
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Affiliation(s)
- Andrew P Scafaro
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
- Bayer CropScience SA-NV, Technologiepark 38, 9052 Gent (Zwijnaarde), Belgium
| | - A Clarissa A Negrini
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Brendan O'Leary
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
- Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
| | - F Azzahra Ahmad Rashid
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Lucy Hayes
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Yuzhen Fan
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - You Zhang
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Vincent Chochois
- ARC Centre of Excellence for Translational Photosynthesis, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - Murray R Badger
- ARC Centre of Excellence for Translational Photosynthesis, Building 134, The Australian National University, Canberra, ACT 2601 Australia
| | - A Harvey Millar
- Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia
| | - Owen K Atkin
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, Building 134, The Australian National University, Canberra, ACT 2601 Australia
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Sew YS, Ströher E, Holzmann C, Huang S, Taylor NL, Jordana X, Millar AH. Multiplex micro-respiratory measurements of Arabidopsis tissues. THE NEW PHYTOLOGIST 2013; 200:922-932. [PMID: 23834713 DOI: 10.1111/nph.12394] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 05/29/2013] [Indexed: 05/08/2023]
Abstract
Researchers often want to study the respiratory properties of individual parts of plants in response to a range of treatments. Arabidopsis is an obvious model for this work; however, because of its size, it represents a challenge for gas exchange measurements of respiration. The combination of micro-respiratory technologies with multiplex assays has the potential to bridge this gap, and make measurements possible in this model plant species. We show the adaptation of the commercial technology used for mammalian cell respiration analysis to study three critical tissues of interest: leaf sections, root tips and seeds. The measurement of respiration in single leaf discs has allowed the age dependence of the respiration rate in Arabidopsis leaves across the rosette to be observed. The oxygen consumption of single root tips from plate-grown seedlings shows the enhanced respiration of root tips and their time-dependent susceptibility to salinity. The monitoring of single Arabidopsis seeds shows the kinetics of respiration over 48 h post-imbibition, and the effect of the phytohormones gibberellic acid (GA3 ) and abscisic acid (ABA) on respiration during seed germination. These studies highlight the potential for multiplexed micro-respiratory assays to study oxygen consumption in Arabidopsis tissues, and open up new possibilities to screen and study mutants and to identify differences in ecotypes or populations of different plant species.
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Affiliation(s)
- Yun Shin Sew
- ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Centre for Comparative Analysis of Biomolecular Networks (CABiN), The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Elke Ströher
- ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Centre for Comparative Analysis of Biomolecular Networks (CABiN), The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Cristián Holzmann
- ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Millenium Nucleus in Plant Functional Genomics, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidád Católica de Chile, Casilla 114-D, Santiago, Chile
| | - Shaobai Huang
- ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Centre for Comparative Analysis of Biomolecular Networks (CABiN), The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Nicolas L Taylor
- ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Centre for Comparative Analysis of Biomolecular Networks (CABiN), The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Xavier Jordana
- Millenium Nucleus in Plant Functional Genomics, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidád Católica de Chile, Casilla 114-D, Santiago, Chile
| | - A Harvey Millar
- ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
- Centre for Comparative Analysis of Biomolecular Networks (CABiN), The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
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McCutchan CL, Monson RK. Night-time respiration rate and leaf carbohydrate concentrations are not coupled in two alpine perennial species. THE NEW PHYTOLOGIST 2001; 149:419-430. [PMID: 33873337 DOI: 10.1046/j.1469-8137.2001.00039.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
• The relationship between night-time respiration rate and carbohydrate supply are measured in two alpine perennials, Bistorta bistortoides and Campanula rotundifolia. • Natural populations of B. bistortoides and C. rotundifolia were subjected to high and low light treatments. During the following night, respiration rate and carbohydrate content of leaves were measured. • At the beginning of the dark period, leaf carbohydrate concentrations were significantly lower in plants exposed to lower irradiance on the previous day. The night-time respiration rate in leaves of both species was rarely affected by the previous days' irradiance; over the course of the night, respiration rate remained unchanged in C. rotundifolia and decreased, but not consistently, in B. bistortoides. No significant interaction was found between irradiance and the night-time pattern of carbohydrate concentration or respiration rate. Nocturnal carbohydrate export was positively correlated with the previous days' irradiance in leaves of C. rotundifolia only. • Leaf respiration rate is uncoupled from carbohydrate supply in leaves of B. bistortoides and C. rotundifolia, possibly allowing more carbohydrate to be exported to underground storage organs.
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Affiliation(s)
- Cheryl L McCutchan
- University of Colorado, Department of Environmental, Organismic, and Population Biology, Campus Box 334, Boulder, CO, 80209-0334
| | - Russell K Monson
- University of Colorado, Department of Environmental, Organismic, and Population Biology, Campus Box 334, Boulder, CO, 80209-0334
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Dry IB, Moore AL, Day DA, Wiskich JT. Regulation of alternative pathway activity in plant mitochondria: nonlinear relationship between electron flux and the redox poise of the quinone pool. Arch Biochem Biophys 1989; 273:148-57. [PMID: 2757390 DOI: 10.1016/0003-9861(89)90173-2] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The dependence of respiratory flux via the alternative pathway on the redox poise of the ubiquinone (Q) pool was investigated in soybean cotyledon mitochondria. A marked nonlinear relationship was observed between Q-pool reduction level and O2 uptake via the alternative oxidase. Significant engagement of the alternative pathway was not apparent until Q-pool reduction level reached 35-40% but increased disproportionately on further reduction. Similar results were obtained with electron donation from either Complex 1 or Complex 2. Close agreement was obtained over a range of experimental conditions between the estimated contribution of the alternative pathway to total respiratory flux, as measured with salicylhydroxamic acid, and that predicted from the redox poise of the Q-pool. These results are discussed in terms of existing models of the regulation of respiratory flux via the alternative pathway.
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Affiliation(s)
- I B Dry
- Department of Botany, University of Adelaide, South Australia
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