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Hamzelou S, Belobrajdic D, Broadbent JA, Juhász A, Lee Chang K, Jameson I, Ralph P, Colgrave ML. Utilizing proteomics to identify and optimize microalgae strains for high-quality dietary protein: a review. Crit Rev Biotechnol 2024; 44:1280-1295. [PMID: 38035669 DOI: 10.1080/07388551.2023.2283376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 09/27/2023] [Accepted: 10/17/2023] [Indexed: 12/02/2023]
Abstract
Algae-derived protein has immense potential to provide high-quality protein foods for the expanding human population. To meet its potential, a broad range of scientific tools are required to identify optimal algal strains from the hundreds of thousands available and identify ideal growing conditions for strains that produce high-quality protein with functional benefits. A research pipeline that includes proteomics can provide a deeper interpretation of microalgal composition and biochemistry in the pursuit of these goals. To date, proteomic investigations have largely focused on pathways that involve lipid production in selected microalgae species. Herein, we report the current state of microalgal proteome measurement and discuss promising approaches for the development of protein-containing food products derived from algae.
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Affiliation(s)
| | | | | | - Angéla Juhász
- School of Science, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Edith Cowan University, Joondalup, Australia
| | | | - Ian Jameson
- CSIRO Ocean and Atmosphere, Hobart, Australia
| | - Peter Ralph
- Climate Change Cluster, University of Technology Sydney, Ultimo, Australia
| | - Michelle L Colgrave
- CSIRO Agriculture and Food, St Lucia, Australia
- School of Science, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Edith Cowan University, Joondalup, Australia
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2
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Kaszecki E, Palberg D, Grant M, Griffin S, Dhanjal C, Capperauld M, Emery RJN, Saville BJ. Euglena mutabilis exists in a FAB consortium with microbes that enhance cadmium tolerance. Int Microbiol 2024; 27:1249-1268. [PMID: 38167969 PMCID: PMC11300505 DOI: 10.1007/s10123-023-00474-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/29/2023] [Accepted: 12/15/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND Synthetic algal-fungal and algal-bacterial cultures have been investigated as a means to enhance the technological applications of the algae. This inclusion of other microbes has enhanced growth and improved stress tolerance of the algal culture. The goal of the current study was to investigate natural microbial consortia to gain an understanding of the occurrence and benefits of these associations in nature. The photosynthetic protist Euglena mutabilis is often found in association with other microbes in acidic environments with high heavy metal (HM) concentrations. This may suggest that microbial interactions are essential for the protist's ability to tolerate these extreme environments. Our study assessed the Cd tolerance of a natural fungal-algal-bacterial (FAB) association whereby the algae is E. mutabilis. RESULTS This study provides the first assessment of antibiotic and antimycotic agents on an E. mutabilis culture. The results indicate that antibiotic and antimycotic applications significantly decreased the viability of E. mutabilis cells when they were also exposed to Cd. Similar antibiotic treatments of E. gracilis cultures had variable or non-significant impacts on Cd tolerance. E. gracilis also recovered better after pre-treatment with antibiotics and Cd than did E. mutabilis. The recoveries were assessed by heterotrophic growth without antibiotics or Cd. In contrast, both Euglena species displayed increased chlorophyll production upon Cd exposure. PacBio full-length amplicon sequencing and targeted Sanger sequencing identified the microbial species present in the E. mutabilis culture to be the fungus Talaromyces sp. and the bacterium Acidiphilium acidophilum. CONCLUSION This study uncovers a possible fungal, algal, and bacterial relationship, what we refer to as a FAB consortium. The members of this consortium interact to enhance the response to Cd exposure. This results in a E. mutabilis culture that has a higher tolerance to Cd than the axenic E. gracilis. The description of this interaction provides a basis for explore the benefits of natural interactions. This will provide knowledge and direction for use when creating or maintaining FAB interactions for biotechnological purposes, including bioremediation.
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Affiliation(s)
- Emma Kaszecki
- Environmental and Life Science Graduate Program, Trent University, Peterborough, ON, Canada
| | - Daniel Palberg
- Environmental and Life Science Graduate Program, Trent University, Peterborough, ON, Canada
| | - Mikaella Grant
- Environmental and Life Science Graduate Program, Trent University, Peterborough, ON, Canada
| | - Sarah Griffin
- Forensic Science Department, Trent University, Peterborough, ON, Canada
| | - Chetan Dhanjal
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | | | - R J Neil Emery
- Environmental and Life Science Graduate Program, Trent University, Peterborough, ON, Canada
- Department of Biology, Trent University, Peterborough, ON, Canada
| | - Barry J Saville
- Environmental and Life Science Graduate Program, Trent University, Peterborough, ON, Canada.
- Forensic Science Department, Trent University, Peterborough, ON, Canada.
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3
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Bedard S, Roxborough E, O'Neill E, Mangal V. The biomolecules of Euglena gracilis: Harnessing biology for natural solutions to future problems. Protist 2024; 175:126044. [PMID: 38823247 DOI: 10.1016/j.protis.2024.126044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 02/05/2024] [Accepted: 05/16/2024] [Indexed: 06/03/2024]
Abstract
Over the past decade, the autotrophic and heterotrophic protist Euglena gracilis (E. gracilis) has gained popularity across the studies of environmental science, biosynthesis experiments, and nutritional substitutes. The unique physiology and versatile metabolism of E. gracilis have been a recent topic of interest to many researchers who continue to understand the complexity and possibilities of using E. gracilis biomolecule production. In this review, we present a comprehensive representation of recent literature outlining the various uses of biomolecules derived from E. gracilis across the fields of natural product biosynthesis, as a nutritional substitute, and as bioremediation tools. In addition, we highlight effective strategies for altering metabolite production using abiotic stressors and growth conditions. To better understand metabolite biosynthesis and its role in E. gracilis, integrated studies involving genomics, metabolomics, and proteomics should be considered. Together, we show how the ongoing advancements in E. gracilis related research continue to broaden applications in the biosynthetic sector and highlight future works that would strengthen our understanding of overall Euglena metabolism.
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Affiliation(s)
- S Bedard
- Department of Chemistry, Brock University. 1812 Sir Isaac Brock Way, St. Catherines, Ontario L2S 3A1, Canada
| | - E Roxborough
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - E O'Neill
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - V Mangal
- Department of Chemistry, Brock University. 1812 Sir Isaac Brock Way, St. Catherines, Ontario L2S 3A1, Canada.
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4
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Farjallah A, Fillion M, Guéguen C. Metabolic responses of Euglena gracilis under photoheterotrophic and heterotrophic conditions. Protist 2024; 175:126035. [PMID: 38688055 DOI: 10.1016/j.protis.2024.126035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 03/19/2024] [Accepted: 04/15/2024] [Indexed: 05/02/2024]
Abstract
The protist Euglena gracilis has various trophic modes including heterotrophy and photoheterotrophy. To investigate how cultivation mode influences metabolic regulation, the chemical composition of cellular metabolites of Euglena gracilis grown under heterotrophic and photoheterotrophic conditions was monitored from the early exponential phase to the mid-stationary phase using two different techniques, i.e, nuclear magnetic resonance (NMR) spectroscopy and high-resolution mass spectrometry (HRMS). The combined metabolomics approach allowed an in-depth understanding of the mechanism of photoheterotrophic and heterotrophic growth for biomolecule production. Heterotrophic conditions promoted the production of polar amino and oxygenated compounds such as proteins and polyphenol compounds, especially at the end of the exponential phase while photoheterotrophic cells enhanced the production of organoheterocyclic compounds, carbohydrates, and alkaloids.
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Affiliation(s)
- Asma Farjallah
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Matthieu Fillion
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Céline Guéguen
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada.
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5
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Kennedy V, Kaszecki E, Donaldson ME, Saville BJ. The impact of elevated sulfur and nitrogen levels on cadmium tolerance in Euglena species. Sci Rep 2024; 14:11734. [PMID: 38777815 PMCID: PMC11111685 DOI: 10.1038/s41598-024-61964-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 05/13/2024] [Indexed: 05/25/2024] Open
Abstract
Heavy metal (HM) pollution threatens human and ecosystem health. Current methods for remediating water contaminated with HMs are expensive and have limited effect. Therefore, bioremediation is being investigated as an environmentally and economically viable alternative. Freshwater protists Euglena gracilis and Euglena mutabilis were investigated for their tolerance to cadmium (Cd). A greater increase in cell numbers under Cd stress was noted for E. mutabilis but only E. gracilis showed an increase in Cd tolerance following pre-treatment with elevated concentrations of S or N. To gain insight regarding the nature of the increased tolerance RNA-sequencing was carried out on E. gracilis. This revealed transcript level changes among pretreated cells, and additional differences among cells exposed to CdCl2. Gene ontology (GO) enrichment analysis reflected changes in S and N metabolism, transmembrane transport, stress response, and physiological processes related to metal binding. Identifying these changes enhances our understanding of how these organisms adapt to HM polluted environments and allows us to target development of future pre-treatments to enhance the use of E. gracilis in bioremediation relating to heavy metals.
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Affiliation(s)
- Victoria Kennedy
- Environmental and Life Sciences Graduate Program, Trent University, Peterborough, ON, Canada
| | - Emma Kaszecki
- Environmental and Life Sciences Graduate Program, Trent University, Peterborough, ON, Canada
| | - Michael E Donaldson
- Environmental and Life Sciences Graduate Program, Trent University, Peterborough, ON, Canada
- Forensic Science Department, Trent University, Peterborough, ON, Canada
| | - Barry J Saville
- Environmental and Life Sciences Graduate Program, Trent University, Peterborough, ON, Canada.
- Forensic Science Department, Trent University, Peterborough, ON, Canada.
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6
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Kastenhofer J, Spadiut O, Papangelakis VG, Allen DG. Roles of pH and phosphate in rare earth element biosorption with living acidophilic microalgae. Appl Microbiol Biotechnol 2024; 108:262. [PMID: 38483568 PMCID: PMC10940408 DOI: 10.1007/s00253-024-13068-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 02/01/2024] [Accepted: 02/11/2024] [Indexed: 03/17/2024]
Abstract
The increasing demand for rare earth elements (REEs) has spurred interest in the development of recovery methods from aqueous waste streams. Acidophilic microalgae have gained attention for REE biosorption as they can withstand high concentrations of transition metals and do not require added organic carbon to grow, potentially allowing simultaneous sorption and self-replication of the sorbent. Here, we assessed the potential of Galdieria sulphuraria for REE biosorption under acidic, nutrient-replete conditions from solutions containing ≤ 15 ppm REEs. Sorption at pH 1.5-2.5 (the growth optimum of G. sulphuraria) was poor but improved up to 24-fold at pH 5.0 in phosphate-free conditions. Metabolic activity had a negative impact on REE sorption, additionally challenging the feasibility of REE biosorption under ideal growth conditions for acidophiles. We further examined the possibility of REE biosorption in the presence of phosphate for biomass growth at elevated pH (pH ≥ 2.5) by assessing aqueous La concentrations in various culture media. Three days after adding La into the media, dissolved La concentrations were up to three orders of magnitude higher than solubility predictions due to supersaturation, though LaPO4 precipitation occurred under all conditions when seed was added. We concluded that biosorption should occur separately from biomass growth to avoid REE phosphate precipitation. Furthermore, we demonstrated the importance of proper control experiments in biosorption studies to assess potential interactions between REEs and matrix ions such as phosphates. KEY POINTS: • REE biosorption with G. sulphuraria increases significantly when raising pH to 5 • Phosphate for biosorbent growth has to be supplied separately from biosorption • Biosorption studies have to assess potential matrix effects on REE behavior.
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Affiliation(s)
- Jens Kastenhofer
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada
| | - Oliver Spadiut
- Institute of Chemical, Environmental and Bioscience Engineering, Research Division Biochemical Engineering, Research Group Integrated Bioprocess Development, TU Vienna, Gumpendorfer Straße 1a, 1060, Vienna, Austria
| | - Vladimiros G Papangelakis
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada
| | - D Grant Allen
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada.
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Narh Mensah DL, Wingfield BD, Coetzee MPA. Two distinct non-ribosomal peptide synthetase-independent siderophore synthetase gene clusters identified in Armillaria and other species in the Physalacriaceae. G3 (BETHESDA, MD.) 2023; 13:jkad205. [PMID: 37843963 PMCID: PMC10700112 DOI: 10.1093/g3journal/jkad205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 08/28/2023] [Indexed: 10/18/2023]
Abstract
Siderophores are important for ferric iron solubilization, sequestration, transportation, and storage, especially under iron-limiting conditions such as aerobic conditions at high pH. Siderophores are mainly produced by non-ribosomal peptide synthetase-dependent siderophore pathway, non-ribosomal peptide synthetase-independent siderophore synthetase pathway, or the hybrid non-ribosomal peptide synthetases/non-ribosomal peptide synthetases-independent siderophore pathway. Outcompeting or inhibition of plant pathogens, alteration of host defense mechanisms, and alteration of plant-fungal interactions have been associated with fungal siderophores. To understand these mechanisms in fungi, studies have been conducted on siderophore biosynthesis by ascomycetes with limited focus on the basidiomycetes. Armillaria includes several species that are pathogens of woody plants and trees important to agriculture, horticulture, and forestry. The aim of this study was to investigate the presence of non-ribosomal peptide synthetases-independent siderophore synthetase gene cluster(s) in genomes of Armillaria species using a comparative genomics approach. Iron-dependent growth and siderophore biosynthesis in strains of selected Armillaria spp. were also evaluated in vitro. Two distinct non-ribosomal peptide synthetases-independent siderophore synthetase gene clusters were identified in all the genomes. All non-ribosomal peptide synthetases-independent siderophore synthetase genes identified putatively encode Type A' non-ribosomal peptide synthetases-independent siderophore synthetases, most of which have IucA_IucC and FhuF-like transporter domains at their N- and C-terminals, respectively. The effect of iron on culture growth varied among the strains studied. Bioassays using the CAS assay on selected Armillaria spp. revealed in vitro siderophore biosynthesis by all strains irrespective of added FeCl3 concentration. This study highlights some of the tools that Armillaria species allocate to iron homeostasis. The information generated from this study may in future aid in developing molecular based methods to control these phytopathogens.
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Affiliation(s)
- Deborah L Narh Mensah
- Departments of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria 0002, South Africa
- CSIR—Food Research Institute, Microbiology and Mushroom Research Division, P. O. Box, M20, Accra, Ghana
| | - Brenda D Wingfield
- Departments of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria 0002, South Africa
| | - Martin P A Coetzee
- Departments of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria 0002, South Africa
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Kadri MS, Singhania RR, Haldar D, Patel AK, Bhatia SK, Saratale G, Parameswaran B, Chang JS. Advances in Algomics technology: Application in wastewater treatment and biofuel production. BIORESOURCE TECHNOLOGY 2023; 387:129636. [PMID: 37544548 DOI: 10.1016/j.biortech.2023.129636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Advanced sustainable bioremediation is gaining importance with rising global pollution. This review examines microalgae's potential for sustainable bioremediation and process enhancement using multi-omics approaches. Recently, microalgae-bacterial consortia have emerged for synergistic nutrient removal, allowing complex metabolite exchanges. Advanced bioremediation requires effective consortium design or pure culture based on the treatment stage and specific roles. The strain potential must be screened using modern omics approaches aligning wastewater composition. The review highlights crucial research gaps in microalgal bioremediation. It discusses multi-omics advantages for understanding microalgal fitness concerning wastewater composition and facilitating the design of microalgal consortia based on bioremediation skills. Metagenomics enables strain identification, thereby monitoring microbial dynamics during the treatment process. Transcriptomics and metabolomics encourage the algal cell response toward nutrients and pollutants in wastewater. Multi-omics role is also summarized for product enhancement to make algal treatment sustainable and fit for sustainable development goals and growing circular bioeconomy scenario.
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Affiliation(s)
- Mohammad Sibtain Kadri
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung City 804201, Taiwan
| | - Reeta Rani Singhania
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India
| | - Dibyajyoti Haldar
- Department of Biotechnology, Karunya Institute of Technology and Sciences, Coimbatore 641114, India
| | - Anil Kumar Patel
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India.
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 805029, Republic of Korea
| | - Ganesh Saratale
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si 10326, Republic of Korea
| | - Binod Parameswaran
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India
| | - Jo-Shu Chang
- Department of Chemical Engineering, National Cheng Kung University, Taiwan; Department of Chemical and Materials Engineering, Tunghai University, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taiwan.
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9
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Li Y, Shi X, Chen Y, Luo S, Qin Z, Chen S, Wu Y, Yu F. Quantitative proteomic analysis of the mechanism of Cd toxicity in Enterobacter sp. FM-1: Comparison of different growth stages. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122513. [PMID: 37673320 DOI: 10.1016/j.envpol.2023.122513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 07/31/2023] [Accepted: 09/04/2023] [Indexed: 09/08/2023]
Abstract
Enterobacter sp. are widely used in bioremediation, but the mechanism of Cadmium (Cd) toxicity in Enterobacter sp. has been poorly studied. In the present study, we determined the tolerance of Enterobacter sp. FM-1 to Cd by analyzing the physiological and biochemical responses of FM-1 induced under Cd stress. Differentially expressed proteins (DEPs) under exposure to different Cd environments were analyzed by 4D-label-free proteomics to provide a comprehensive understanding of Cd toxicity in FM-1. The greatest total number of DEPs, 1148, was found in the High concentration vs. Control comparison group at 10 h. When protein expression was compared after different incubation times, FM-1 showed the highest Cd tolerance at 48 h. Additionally, with an increasing incubation time, different comparison groups gradually began to show similar growth patterns, which was reflected in the GO enrichment analysis. Notably, only 815 proteins were identified in the High concentration vs. Control group, and KEGG enrichment analysis revealed that these proteins were significantly enriched in the pyruvate metabolism, oxidative phosphorylation, peroxisome, glyoxylate and dicarboxylate metabolism, and citrate cycle pathways. These results suggested that an increased incubation time allows FM-1 adapt and survive in an environment with Cd toxicity, and protein expression significantly increased in response to oxidative stress in a Cd-contaminated environment during the pre-growth period. This study provides new perspectives on bacterial participation in bioremediation and expands our understanding of the mechanism of bacterial resistance under Cd exposure.
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Affiliation(s)
- Yi Li
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, 541004, Guilin, China; College of Environment and Resources, Guangxi Normal University, 541004, Guilin, China
| | - Xinwei Shi
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004, Guilin, China
| | - Yuyuan Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004, Guilin, China
| | - Shiyu Luo
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004, Guilin, China
| | - Zhongkai Qin
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004, Guilin, China
| | - Shuairen Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004, Guilin, China
| | - Yamei Wu
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Environment and Resources, Guangxi Normal University, 541004, Guilin, China
| | - Fangming Yu
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, 541004, Guilin, China; College of Environment and Resources, Guangxi Normal University, 541004, Guilin, China.
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Tarbajova V, Kolackova M, Chaloupsky P, Dobesova M, Capal P, Pilat Z, Samek O, Zemanek P, Svec P, Sterbova DS, Vaculovicova M, Richtera L, Pérez-de-Mora A, Adam V, Huska D. Physiological and transcriptome profiling of Chlorella sorokiniana: A study on azo dye wastewater decolorization. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132450. [PMID: 37708651 DOI: 10.1016/j.jhazmat.2023.132450] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/02/2023] [Accepted: 08/30/2023] [Indexed: 09/16/2023]
Abstract
Over decades, synthetic dyes have become increasingly dominated by azo dyes posing a significant environmental risk due to their toxicity. Microalgae-based systems may offer an alternative for treatment of azo dye effluents to conventional physical-chemical methods. Here, microalgae were tested to decolorize industrial azo dye wastewater (ADW). Chlorella sorokiniana showed the highest decolorization efficiency in a preliminary screening test. Subsequently, the optimization of the experimental design resulted in 70% decolorization in a photobioreactor. Tolerance of this strain was evidenced using multiple approaches (growth and chlorophyll content assays, scanning electron microscopy (SEM), and antioxidant level measurements). Raman microspectroscopy was employed for the quantification of ADW-specific compounds accumulated by the microalgal biomass. Finally, RNA-seq revealed the transcriptome profile of C. sorokiniana exposed to ADW for 72 h. Activated DNA repair and primary metabolism provided sufficient energy for microalgal growth to overcome the adverse toxic conditions. Furthermore, several transporter genes, oxidoreductases-, and glycosyltransferases-encoding genes were upregulated to effectively sequestrate and detoxify the ADW. This work demonstrates the potential utilization of C. sorokiniana as a tolerant strain for industrial wastewater treatment, emphasizing the regulation of its molecular mechanisms to cope with unfavorable growth conditions.
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Affiliation(s)
- Vladimira Tarbajova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Martina Kolackova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Pavel Chaloupsky
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Marketa Dobesova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Petr Capal
- Institute of Experimental Botany, Centre of the Region Hana for Biotechnological and Agricultural Research, Slechtitelu 241/27, 783 71 Olomouc, Czech Republic
| | - Zdenek Pilat
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic
| | - Ota Samek
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic
| | - Pavel Zemanek
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic
| | - Pavel Svec
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Dagmar Skopalova Sterbova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Marketa Vaculovicova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Alfredo Pérez-de-Mora
- Department of Soil and Groundwater, TAUW GmbH, Landsbergerstr. 404, 81241 Munich, Germany
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
| | - Dalibor Huska
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic.
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Gojkovic Z, Simansky S, Sanabria A, Márová I, Garbayo I, Vílchez C. Interaction of Naturally Occurring Phytoplankton with the Biogeochemical Cycling of Mercury in Aquatic Environments and Its Effects on Global Hg Pollution and Public Health. Microorganisms 2023; 11:2034. [PMID: 37630594 PMCID: PMC10458190 DOI: 10.3390/microorganisms11082034] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 08/02/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
The biogeochemical cycling of mercury in aquatic environments is a complex process driven by various factors, such as ambient temperature, seasonal variations, methylating bacteria activity, dissolved oxygen levels, and Hg interaction with dissolved organic matter (DOM). As a consequence, part of the Hg contamination from anthropogenic activity that was buried in sediments is reinserted into water columns mainly in highly toxic organic Hg forms (methylmercury, dimethylmercury, etc.). This is especially prominent in the coastal shallow waters of industrial regions worldwide. The main entrance point of these highly toxic Hg forms in the aquatic food web is the naturally occurring phytoplankton. Hg availability, intake, effect on population size, cell toxicity, eventual biotransformation, and intracellular stability in phytoplankton are of the greatest importance for human health, having in mind that such Hg incorporated inside the phytoplankton cells due to biomagnification effects eventually ends up in aquatic wildlife, fish, seafood, and in the human diet. This review summarizes recent findings on the topic of organic Hg form interaction with natural phytoplankton and offers new insight into the matter with possible directions of future research for the prevention of Hg biomagnification in the scope of climate change and global pollution increase scenarios.
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Affiliation(s)
- Zivan Gojkovic
- Algae Biotechnology Group, CIDERTA, University of Huelva, 21007 Huelva, Spain; (A.S.); (I.G.); (C.V.)
| | - Samuel Simansky
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 61200 Brno, Czech Republic; (S.S.); (I.M.)
| | - Alain Sanabria
- Algae Biotechnology Group, CIDERTA, University of Huelva, 21007 Huelva, Spain; (A.S.); (I.G.); (C.V.)
| | - Ivana Márová
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 61200 Brno, Czech Republic; (S.S.); (I.M.)
| | - Inés Garbayo
- Algae Biotechnology Group, CIDERTA, University of Huelva, 21007 Huelva, Spain; (A.S.); (I.G.); (C.V.)
| | - Carlos Vílchez
- Algae Biotechnology Group, CIDERTA, University of Huelva, 21007 Huelva, Spain; (A.S.); (I.G.); (C.V.)
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Bernard E, Guéguen C. Molecular changes in phenolic compounds in Euglena gracilis cells grown under metal stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1099375. [PMID: 37229138 PMCID: PMC10203486 DOI: 10.3389/fpls.2023.1099375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 04/21/2023] [Indexed: 05/27/2023]
Abstract
Metal presence in the aquatic ecosystem has increased and diversified over the last decades due to anthropogenic sources. These contaminants cause abiotic stress on living organisms that lead to the production of oxidizing molecules. Phenolic compounds are part of the defense mechanisms countering metal toxicity. In this study, the production of phenolic compounds by Euglena gracilis under three different metal stressors (i.e. cadmium, copper, or cobalt) at sub-lethal concentration was assessed using an untargeted metabolomic approach by mass spectrometry combined with neuronal network analysis (i.e. Cytoscape). The metal stress had a greater impact on molecular diversity than on the number of phenolic compounds. The prevalence of sulfur- and nitrogen-rich phenolic compounds were found in Cd- and Cu-amended cultures. Together these results confirm the impact of metallic stress on phenolic compounds production, which could be utilized to assess the metal contamination in natural waters.
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Lihanová D, Lukáčová A, Beck T, Jedlička A, Vešelényiová D, Krajčovič J, Vesteg M. Versatile biotechnological applications of Euglena gracilis. World J Microbiol Biotechnol 2023; 39:133. [PMID: 36959517 DOI: 10.1007/s11274-023-03585-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/16/2023] [Indexed: 03/25/2023]
Abstract
Euglena gracilis is a freshwater protist possessing secondary chloroplasts of green algal origin. Various physical factors (e.g. UV) and chemical compounds (e.g. antibiotics) cause the bleaching of E. gracilis cells-the loss of plastid genes leading to the permanent inability to photosynthesize. Bleaching can be prevented by antimutagens (i.e. lignin, vitamin C and selenium). Besides screening the mutagenic and antimutagenic activity of chemicals, E. gracilis is also a suitable model for studying the biological effects of many organic pollutants. Due to its capability of heavy metal sequestration, it can be used for bioremediation. E. gracilis has been successfully transformed, offering the possibility of genetic modifications for synthesizing compounds of biotechnological interest. The novel design of the "next generation" transgenic expression cassettes with respect to the specificities of euglenid gene expression is proposed. Moreover, E. gracilis is a natural source of commercially relevant bioproducts such as (pro)vitamins, wax esters, polyunsaturated fatty acids and paramylon (β-1,3-glucan). One of the highest limitations of large-scale cultivation of E. gracilis is its disability to synthesize essential vitamins B1 and B12. This disadvantage can be overcome by co-cultivation of E. gracilis with other microorganisms, which can synthesize sufficient amounts of these vitamins. Such co-cultures can be used for the effective accumulation and harvesting of Euglena biomass by bioflocculation.
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Grants
- VEGA 1/0694/2021 Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic, and the Academy of Sciences
- VEGA 1/0694/2021 Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic, and the Academy of Sciences
- VEGA 1/0694/2021 Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic, and the Academy of Sciences
- VEGA 1/0694/2021 Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic, and the Academy of Sciences
- VEGA 1/0694/2021 Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic, and the Academy of Sciences
- VEGA 1/0694/2021 Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic, and the Academy of Sciences
- VEGA 1/0694/2021 Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic, and the Academy of Sciences
- ITMS 26210120024 European Regional Development Fund
- ITMS 26210120024 European Regional Development Fund
- ITMS 26210120024 European Regional Development Fund
- ITMS 26210120024 European Regional Development Fund
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Affiliation(s)
- Diana Lihanová
- Department of Biology and Ecology, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, 974 01, Banská Bystrica, Slovakia
| | - Alexandra Lukáčová
- Department of Biology and Ecology, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, 974 01, Banská Bystrica, Slovakia
| | - Terézia Beck
- Department of Biology and Ecology, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, 974 01, Banská Bystrica, Slovakia
| | - Andrej Jedlička
- Department of Biology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius, 917 01, Trnava, Slovakia
| | - Dominika Vešelényiová
- Department of Biology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius, 917 01, Trnava, Slovakia
| | - Juraj Krajčovič
- Department of Biology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius, 917 01, Trnava, Slovakia
| | - Matej Vesteg
- Department of Biology and Ecology, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, 974 01, Banská Bystrica, Slovakia.
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14
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Inwongwan S, Pekkoh J, Pumas C, Sattayawat P. Metabolic network reconstruction of Euglena gracilis: Current state, challenges, and applications. Front Microbiol 2023; 14:1143770. [PMID: 36937274 PMCID: PMC10018167 DOI: 10.3389/fmicb.2023.1143770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/06/2023] [Indexed: 03/06/2023] Open
Abstract
A metabolic model, representing all biochemical reactions in a cell, is a prerequisite for several approaches in systems biology used to explore the metabolic phenotype of an organism. Despite the use of Euglena in diverse industrial applications and as a biological model, there is limited understanding of its metabolic network capacity. The unavailability of the completed genome data and the highly complex evolution of Euglena are significant obstacles to the reconstruction and analysis of its genome-scale metabolic model. In this mini-review, we discuss the current state and challenges of metabolic network reconstruction in Euglena gracilis. We have collated and present the available relevant data for the metabolic network reconstruction of E. gracilis, which could be used to improve the quality of the metabolic model of E. gracilis. Furthermore, we deliver the potential applications of the model in metabolic engineering. Altogether, it is supposed that this mini-review would facilitate the investigation of metabolic networks in Euglena and further lay out a direction for model-assisted metabolic engineering.
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Affiliation(s)
- Sahutchai Inwongwan
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Research Center of Microbial Diversity and Sustainable Utilizations, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Jeeraporn Pekkoh
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Research Center of Microbial Diversity and Sustainable Utilizations, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Chayakorn Pumas
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Research Center in Bioresources for Agriculture, Industry and Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Pachara Sattayawat
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Research Center of Microbial Diversity and Sustainable Utilizations, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
- Research Center in Bioresources for Agriculture, Industry and Medicine, Chiang Mai University, Chiang Mai, Thailand
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15
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Nguyen NH, Nguyen QT, Dang DH, Emery RJN. Phytohormones enhance heavy metal responses in Euglena gracilis: Evidence from uptake of Ni, Pb and Cd and linkages to hormonomic and metabolomic dynamics. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 320:121094. [PMID: 36682616 DOI: 10.1016/j.envpol.2023.121094] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/28/2022] [Accepted: 01/14/2023] [Indexed: 06/17/2023]
Abstract
Over the last decade, significant effort has been made to understand phytohormonal functions (e.g., cytokinins (CKs) and abscisic acid (ABA)) in metal stress responses of higher plants and algae. Despite the potential for these phytohormones to improve industrial remediation by Euglena gracilis (Euglenophyceae), no such roles have been elucidated for this highly adaptive species and its response to heavy metals. This study demonstrates that toxic metals (nickel, lead, cadmium) modify hormonal activity profiles (i.e., CK forms and their concentrations) in E. gracilis. Furthermore, exogenous ABA or CK (tZ) enabled higher metal uptake efficiency (i.e., 9.35% in lead and 9.2% in cadmium uptake with CK) and alleviated metal toxicity through the regulation of endogenous CKs (i.e., total CK, isoprenoid CK) and gibberellin (GAs, GA1 and GA3) levels. These responses suggest that E. gracilis regulates multiple phytohormone signals during metal stress acclimation. A deeper approach, using untargeted metabolomic analyses, gave more detailed insight into phytohormone-controlled pathways and associated modified metabolites, which were frequently related to metal accumulation and the physiological acclimation to metal presence. Significant changes in the levels of cellular metabolites, especially those involved in acclimation to metal stress, were under the influence of phytohormones in algal cells. When grown under metal stress conditions, the presence of exogenous ABA or CKs, caused changes in cellular metabolites which included those from: lipid pathways, riboflavin metabolism, the biosynthesis of cofactors/vitamins, and carbohydrate metabolism. Also, bioactive secondary metabolites (e.g., terpenoids, alkaloids, flavonoids, carotenoids) were modified in algal cells treated with phytohormones. Thus, the study gives a detailed view on the regulatory functions of ABA and CKs in algal metal bioremediation strategies, which are attributed to enhanced metal uptake and in the fine-tuning of plant hormone levels during metal stress response. The results can guide efforts to develop efficient, low-cost and environmentally friendly methods for bioremediation.
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Affiliation(s)
- Ngoc Hai Nguyen
- Trent University, Department of Biology, Peterborough, Canada.
| | | | - Duc Huy Dang
- Trent University, School of the Environment and Chemistry Department, Peterborough, Canada
| | - R J Neil Emery
- Trent University, Department of Biology, Peterborough, Canada
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Heavy Metals Exacerbate the Effect of Temperature on the Growth of Chlorella sp.: Implications on Algal Blooms and Management. Processes (Basel) 2022. [DOI: 10.3390/pr10122638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
With the accelerated urbanization and rapid development of the industrial and agricultural sectors, concern about the pollution of water environments is becoming more widespread. Algal blooms of varying sizes are becoming increasingly frequent in lakes and reservoirs; temperatures, nutrients, heavy metals, and dissolved oxygen are the factors that influence algal bloom occurrence. However, knowledge of the combined effect of heavy metals and temperature on algal growth remains limited. Thus, this study investigated how specific concentrations of heavy metals affect algal growth at different temperatures; to this end, two heavy metals were used (0.01 mg/L Pb2+ and 0.05 mg/L Cr6+) at three incubation temperatures (15, 25, and 30 °C) with the alga Chlorella sp. A higher incubation temperature contributed to a rise in soluble proteins, which promoted algal growth. The density of algal cells increased with temperature, and catalase (CAT) decreased with increasing temperature. Chlorella sp. growth and catalase activity were optimal at 30 °C (algal cell density: 1.46 × 107 cell/L; CAT activity: 29.98 gprot/L). Pb2+ and Cr6+ significantly promoted Chlorella sp. growth during incubation at 25 and 30 °C, respectively. At specific temperatures, 0.01 mg/L Pb2+ and 0.05 mg/L Cr6+ promoted the production of soluble proteins and, hence, the growth of Chlorella sp. The results provide a useful background for the mitigation and prevention of algal blooms.
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17
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Wang J, Tian Q, Cui L, Cheng J, Zhou H, Peng A, Qiu G, Shen L. Effect of extracellular proteins on Cd(II) adsorption in fungus and algae symbiotic system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 323:116173. [PMID: 36115246 DOI: 10.1016/j.jenvman.2022.116173] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/03/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Fungus-algae symbiotic systems (FASS) are typically used to assist in the immobilization of algae and strengthen the adsorption of heavy metals. However, the adsorption behavior of the symbiotic system and the molecular regulation mechanism of extracellular proteins in the adsorption of heavy metals have not been reported in detail. In this study, a stable FCSS (fungus-cyanobacterium symbiotic system) was used to study Cd(II) adsorption behavior. The fixation efficiency of fungus to cyanobacterium reached more than 95% at pH7.0, 30 °C, 150 rpm, and a medium ratio of 100%. The biomass, chlorophyll content, and total fatty acid content of the symbiotic system were much higher than those of cyanobacterium and fungus alone. The photosynthetic fluorescence parameters showed that the presence of fungus enhanced the light tolerance of cyanobacterium. The original light energy conversion efficiency and potential activity of PSII were enhanced, indicating that symbiosis could promote the photosynthetic process of cyanobacterium. The Cd(II) adsorption efficiency can achieve 90%. The system maintained excellent adsorption after six adsorption cycles. Differential proteins were mainly enriched in areas such as metabolism, ABC transport system, and pressure response. Cd(II) stress promotes an increase in efflux proteins. Moreover, cadmium can be fixed as much as possible by secreting extracellular proteins, and the toxicity of cadmium to cells can be alleviated by regulating the metabolism of glutathione, reducing oxidative phosphorylation level, and reducing oxidative stress, thus improving the resistance to Cd(II). Meanwhile, the expression of enzymes involved in glycolysis and the pentose phosphate pathway was upregulated, while the expression of those in the TCA cycle was downregulated. The expression of substances related to PSI and PSII in the photosynthetic system and rubisco, a key enzyme in the Calvin cycle, was significantly upregulated, indicating that the glucose metabolism and photosynthetic pathways of the symbiotic system were involved in resistance to Cd toxicity. This revealed the response mechanism of the fungus-algal symbiotic system in the process of Cd adsorption, and also provided reference value for industrial application in water treatment.
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Affiliation(s)
- Junjun Wang
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Qinghua Tian
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Linlin Cui
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Jinju Cheng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Hao Zhou
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Anan Peng
- School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China
| | - Guanzhou Qiu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Li Shen
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China.
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18
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Yang Y, Hassan SH, Awasthi MK, Gajendran B, Sharma M, Ji MK, Salama ES. The recent progress on the bioactive compounds from algal biomass for human health applications. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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19
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Nagarajan D, Lee DJ, Varjani S, Lam SS, Allakhverdiev SI, Chang JS. Microalgae-based wastewater treatment - Microalgae-bacteria consortia, multi-omics approaches and algal stress response. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 845:157110. [PMID: 35787906 DOI: 10.1016/j.scitotenv.2022.157110] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 06/27/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
Sustainable environmental management is one of the important aspects of sustainable development goals. Increasing amounts of wastewaters (WW) from exponential economic growth is a major challenge, and conventional treatment methods entail a huge carbon footprint in terms of energy use and GHG emissions. Microalgae-based WW treatment is a potential candidate for sustainable WW treatment. The nutrients which are otherwise unutilized in the conventional processes are recovered in the beneficial microalgal biomass. This review presents comprehensive information regarding the potential of microalgae as sustainable bioremediation agents. Microalgae-bacterial consortia play a critical role in synergistic nutrient removal, supported by the complex nutritional and metabolite exchange between microalgae and the associated bacteria. Design of effective microalgae-bacteria consortia either by screening or by recent technologies such as synthetic biology approaches are highly required for efficient WW treatment. Furthermore, this review discusses the crucial research gap in microalgal WW treatment - the application of a multi-omics platform for understanding microalgal response towards WW conditions and the design of effective microalgal or microalgae-bacteria consortia based on genetic information. While metagenomics helps in the identification and monitoring of the microbial community throughout the treatment process, transcriptomics, proteomics and metabolomics aid in studying the algal cellular response towards the nutrients and pollutants in WW. It has been established that the integration of microalgal processes into conventional WW treatment systems is feasible. In this direction, future research directions for microalgal WW treatment emphasize the need for identifying the niche in WW treatment, while highlighting the pilot sale plants in existence. Microalgae-based WW treatment could be a potential phase in the waste hierarchy of circular economy and sustainability, considering WWs are a rich secondary source of finite resources such as nitrogen and phosphorus.
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Affiliation(s)
- Dillirani Nagarajan
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan.
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan; Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tang, Hong Kong
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, Gujarat 382 010, India
| | - Su Shiung Lam
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Sustainability Cluster, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand 248007, India
| | - Suleyman I Allakhverdiev
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia
| | - Jo-Shu Chang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical and Materials Engineering, Tunghai University, Taichung, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung, Taiwan; Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li, Taiwan.
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Putt AD, Rafie SAA, Hazen TC. Large-Data Omics Approaches in Modern Remediation. JOURNAL OF ENVIRONMENTAL ENGINEERING 2022; 148. [DOI: 10.1061/(asce)ee.1943-7870.0002042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/26/2022] [Indexed: 09/02/2023]
Affiliation(s)
- Andrew D. Putt
- Ph.D. Candidate, Dept. of Earth and Planetary Sciences, Univ. of Tennessee, Knoxville, TN 37996. ORCID:
| | - Sa’ad Abd Ar Rafie
- Ph.D. Candidate, Dept. of Civil and Environmental Sciences, Univ. of Tennessee, Knoxville, TN 37996
| | - Terry C. Hazen
- Governor’s Chair Professor, Dept. of Earth and Planetary Sciences, Univ. of Tennessee, Knoxville, TN 37996; Dept. of Civil and Environmental Sciences, Univ. of Tennessee, Knoxville, TN 37996; Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Dept. of Microbiology, Univ. of Tennessee, Knoxville, TN 37996; Institute for a Secure and Sustainable Environment, Univ. of Tennessee, Knoxville, TN 37996 (corresponding author). ORCID:
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21
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Lewis A, Guéguen C. Using chemometric models to predict the biosorption of low levels of dysprosium by Euglena gracilis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:58936-58949. [PMID: 35377126 DOI: 10.1007/s11356-022-19918-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
The critical rare earth element dysprosium (Dy) is integral for sustainable technologies. What is concerning is that Dy is in imminent short supply and no current replacements yet exist, coupled with increasing environmental Dy levels influenced by anthropogenic activities. This study applies chemometric methods such as response surface methodology and artificial neural networks to predict low Dy removal levels using the biosorbent Euglena gracilis. A three-factor Box-Behnken experimental design was conducted with initial concentration (1 to 100 µg L-1), contact time (30 to 180 min), and pH (3 to 8) as the three independent variables, and percentage removal and sorption capacity (q) as dependent variables. Using Dy percentage removal as response, for the worst and best conditions ranged from 0 to 92% respectively, with an average removal of 66 ± 4%. Using sorption capacity (q) as a different response variable, q varied from 0 to 93 µg/g with 27 ± 4 µg/g capacity as average. Maximum removal was 92% (q = 93 µg/g) was at pH 3, a contact time of 105 min and at a concentration of 100 µg/L. Using sorption capacity as the response variable for ANOVA, pH and metal concentrations were statistically significant factors, with lower pH and higher metal concentration having improved Dy removal, with a desirability near 1. Statistical tests such as analysis of variance, lack-of-fit, and coefficient of determination (R2) confirmed model validity. A 3-10-1 ANN network array was used to model experimental responses (q). RSM and ANN effectively modeled Dy biosorption. E. gracilis proved to be a cheap and effective biosorbent for Dy biosorption and has the potential to remediate acid mine drainage areas exhibiting low Dy concentrations.
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Affiliation(s)
- Ainsely Lewis
- Environmental and Life Sciences Graduate Program, Trent University, Peterborough, ON, Canada
| | - Céline Guéguen
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada.
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22
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Li Z, Li S, Li T, Gao X, Zhu L. Physiological and transcriptomic responses of Chlorella sorokiniana to ciprofloxacin reveal molecular mechanisms for antibiotic removal. iScience 2022; 25:104638. [PMID: 35800754 PMCID: PMC9254343 DOI: 10.1016/j.isci.2022.104638] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 04/09/2022] [Accepted: 06/14/2022] [Indexed: 11/25/2022] Open
Abstract
Microalgae-based technology is an effective and environmentally friendly method for antibiotics-contaminated wastewater treatment. To assess the tolerance and removal ability of Chlorella sorokiniana to ciprofloxacin (CIP), this study comprehensively revealed the responses of C. sorokiniana to CIP exposure and its degradation processes through physiological and transcriptomic analyses. Although the photosynthetic system was inhibited, the growth of C. sorokiniana was not negatively affected by CIP. Dissolved organic matter was analyzed and indicated that humic-like substances were released to alleviate the stress of CIP. In addition, the maximum removal of CIP was 83.3% under 20 mg L-1 CIP exposure. HPLC-MS/MS and RNA-Seq analyses suggested that CIP could be bioaccumulated and biodegraded by C. sorokiniana through the reactions of hydroxylation, demethylation, ring cleavage, oxidation, dehydrogenation, and decarboxylation with the help of intracellular oxidoreductases, especially cytochrome P450. Collectively, this research shows that C. sorokiniana have a great potential for removing CIP from wastewater.
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Affiliation(s)
- Zhuo Li
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
| | - Shuangxi Li
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
| | - Tianrui Li
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
| | - Xinxin Gao
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
| | - Liandong Zhu
- School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China
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Blanco-Vieites M, Suárez-Montes D, Delgado F, Álvarez-Gil M, Battez AH, Rodríguez E. Removal of heavy metals and hydrocarbons by microalgae from wastewater in the steel industry. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102700] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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24
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Assess heavy metals-induced oxidative stress of microalgae by Electro-Raman combined technique. Anal Chim Acta 2022; 1208:339791. [PMID: 35525583 DOI: 10.1016/j.aca.2022.339791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 01/16/2023]
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25
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Jean N, Perié L, Dumont E, Bertheau L, Balliau T, Caruana AMN, Amzil Z, Laabir M, Masseret E. Metal stresses modify soluble proteomes and toxin profiles in two Mediterranean strains of the distributed dinoflagellate Alexandrium pacificum. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 818:151680. [PMID: 34793790 DOI: 10.1016/j.scitotenv.2021.151680] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/25/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
HABs involving Alexandrium pacificum have been reported in metal-contaminated ecosystems, suggesting that this distributed species adapts to and/or can tolerate the effects of metals. Modifications in soluble proteomes and PST contents were characterized in two Mediterranean A. pacificum strains exposed to mono- or polymetallic stresses (zinc, lead, copper, cadmium). These strains were isolated from two anthropized locations: Santa Giusta Lagoon (Italy, SG C10-3) and the Tarragona seaport (Spain, TAR C5-4F). In both strains, metals primarily downregulated key photosynthesis proteins. Metals also upregulated other proteins involved in photosynthesis (PCP in both strains), the oxidative stress response (HSP 60, proteasome and SOD in SG C10-3; HSP 70 in TAR C5-4F), energy metabolism (AdK in TAR C5-4F), neoglucogenesis/glycolysis (GAPDH and PEP synthase in SG C10-3) and protein modification (PP in TAR C5-4F). These proteins, possibly involved in adaptive proteomic responses, may explain the development of these A. pacificum strains in metal-contaminated ecosystems. The two strains showed different proteomic responses to metals, with SG C10-3 upregulating more proteins, particularly PCP. Among the PSTs, regardless of the metal and the strain studied, C2 and GTX4 predominated, followed by GTX5. Under the polymetallic cocktail, (i) total PSTs, C2 and GTX4 reached the highest levels in SG C10-3 only, and (ii) total PSTs, C2, GTX5 and neoSTX were higher in SG C10-3 than in TAR C5-4F, whereas in SG C10-3 under copper stress, total PSTs, GTX5, GTX1 and C1 were higher than in the controls, revealing variability in PST biosynthesis between the two strains. Total PSTs, C2, GTX4 and GTX1 showed significant positive correlations with PCP, indicating that PST production may be positively related to photosynthesis. Our results showed that the A. pacificum strains adapt their proteomic and physiological responses to metals, which may contribute to their ecological success in highly anthropized areas.
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Affiliation(s)
- Natacha Jean
- Université de Toulon, Aix Marseille Univ, CNRS, IRD, MIO, Toulon, France.
| | - Luce Perié
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, New York University, 30(th) St., New York, NY 10016, USA
| | - Estelle Dumont
- UMR_MD1, Aix-Marseille Univ, U-1261-INSERM, SSA, IRBA, MCT, Marseille, France
| | - Lucie Bertheau
- UMR PAM A 02.102 Procédés Alimentaires et Microbiologiques, Université de Bourgogne Franche-Comté, AgroSup Dijon, esplanade Erasme, 21 000 Dijon, France
| | - Thierry Balliau
- PAPPSO-GQE-Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, 91 190 Gif-sur-Yvette, France
| | - Amandine M N Caruana
- IFREMER, Phycotoxin Laboratory, rue de l'île d'Yeu, BP 21105, 44 311 Nantes, France
| | - Zouher Amzil
- IFREMER, Phycotoxin Laboratory, rue de l'île d'Yeu, BP 21105, 44 311 Nantes, France
| | - Mohamed Laabir
- Marbec, Univ Montpellier, IRD, Ifremer, CNRS, Montpellier, France
| | - Estelle Masseret
- Marbec, Univ Montpellier, IRD, Ifremer, CNRS, Montpellier, France
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Han H, Wu X, Bolan N, Kirkham MB, Yang J, Chen Z. Inhibition of cadmium uptake by wheat with urease-producing bacteria combined with sheep manure under field conditions. CHEMOSPHERE 2022; 293:133534. [PMID: 34999099 DOI: 10.1016/j.chemosphere.2022.133534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/16/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
In heavy metal-contaminated farmland, microorganisms or organic fertilizers can be used to minimize heavy metal uptake by crops to ensure food safety. However, the mechanisms by which urease-producing and metal-immobilizing bacteria combined with manure inhibit Cd uptake in wheat (Triticum aestivum L.) remain unclear. Herein, the effects of Enterobacter bugandensis TJ6, sheep manure (SM), and TJ6 combined with SM on Cd uptake by wheat and the mechanisms involved were investigated under field conditions. The results showed that strain TJ6 increased the urease activity and the proportion of strains with a high Cd adsorption capacity in SM, thereby enhancing the Cd adsorption capacity of SM in solution. Strain TJ6 combined with SM improved the rhizosphere soil urease activity, NH4+/NO3- ratio, and pH, thus reducing the Cd content (75.9%) in wheat grain. In addition, TJ6+SM reduced the bacterial community diversity but shifted the structure of the bacterial community in rhizosphere soil. Interestingly, the relative abundances of urease-producing bacteria and metal-immobilizing bacteria (Enterobacter, Bacillus, Exiguobacterium, Rhizobium, and Serratia) in rhizosphere soil were enriched, which enhanced wheat resistance to Cd toxicity. These results showed that urease-producing and metal-immobilizing bacteria combined with sheep manure can inhibit the uptake of Cd by wheat.
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Affiliation(s)
- Hui Han
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China; Collaborative Innovation of Water Security for the Water Source Region of Mid-line of the South-to-North Diversion Project of Henan Province, College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, PR China
| | - Xuejiao Wu
- Collaborative Innovation of Water Security for the Water Source Region of Mid-line of the South-to-North Diversion Project of Henan Province, College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, PR China
| | - Nanthi Bolan
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan Campus, NSW, 2308, Australia
| | - M B Kirkham
- Department of Agronomy, Kansas State University, Manhattan, KS, 66506, USA
| | - Jianjun Yang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.
| | - Zhaojin Chen
- Collaborative Innovation of Water Security for the Water Source Region of Mid-line of the South-to-North Diversion Project of Henan Province, College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, PR China
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Yang L, Wang J, Yang Y, Li S, Wang T, Oleksak P, Chrienova Z, Wu Q, Nepovimova E, Zhang X, Kuca K. Phytoremediation of heavy metal pollution: Hotspots and future prospects. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 234:113403. [PMID: 35286961 DOI: 10.1016/j.ecoenv.2022.113403] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/25/2021] [Accepted: 03/07/2022] [Indexed: 05/15/2023]
Abstract
To clarify the global status and research hotspots of heavy metal pollution phytoremediation, we used Web of Science, Cite Space software, and VOS viewer to analyse 1123 publications from the period of 2000-2020. Literature categories, research hotpots, and the most prolific publications by country, institution, and author were analysed separately. Around 34% of the articles are contributed from five countries: China (29.37%), India (11.00%), Spain (6.29%), Italy (6.20%), and Pakistan (5.67%). The hot research topic keywords were "diversity", "translocation", and "enhanced phytoremediation". Cadmium was the most highly concerned heavy metal in the phytoremediation. Twenty-three articles were highly cited, and they mainly focused on 1) enhancing the remediation ability of plants in heavy metal contaminated soil by microbial and chemical additives; 2) the molecular effect and mechanism of heavy metals on plant growth and development; 3) discovering novel heavy metal hyper-enriched plants which can remediate mixed heavy metal pollution. From the above analysis, we concluded that the future research directions should be 1) strengthening the plant remediation ability by biochemical means; 2) studying the molecular mechanism underlying heavy metal damage to plants; 3) studying the enrichment principle of plants for heavy metals. The present study provides a further understanding of the trends in phytoremediation of heavy metal pollution, and the data analysed can be used as a guide for future research directions.
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Affiliation(s)
- Le Yang
- College of Horticulture & Gardening, Yangtze University, Jingzhou 434025, China
| | - Junbang Wang
- National Ecosystem Science Data Center, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Yongsheng Yang
- The Key Laboratory of Restoration Ecology in Cold Region of Qinghai Province/Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining 810001, China
| | - Sha Li
- School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
| | - Tongxin Wang
- College of Horticulture & Gardening, Yangtze University, Jingzhou 434025, China
| | - Patrik Oleksak
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove 500 03, Czech Republic
| | - Zofia Chrienova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove 500 03, Czech Republic
| | - Qinghua Wu
- College of Horticulture & Gardening, Yangtze University, Jingzhou 434025, China; Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove 500 03, Czech Republic
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove 500 03, Czech Republic
| | - Xiujuan Zhang
- College of Horticulture & Gardening, Yangtze University, Jingzhou 434025, China.
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove 500 03, Czech Republic.
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Shakya M, Silvester E, Rees G, Rajapaksha KH, Faou P, Holland A. Changes to the amino acid profile and proteome of the tropical freshwater microalga Chlorella sp. in response to copper stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 233:113336. [PMID: 35228027 DOI: 10.1016/j.ecoenv.2022.113336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/23/2022] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Contamination of freshwaters is increasing globally, with microalgae considered one of the most sensitive taxa to metal pollution. Here, we used 72 h bioassays to explore the biochemical effects of copper (Cu) on the amino acid (AA) profile and proteome of Chlorella sp. and advance our understanding of the molecular changes that occur in algal cells during exposure to environmentally realistic Cu concentrations. The Cu concentrations required to inhibit algal growth rate by 10% (EC10) and 50% (EC50) were 1.0 (0.7-1.2) µg L-1 and 2.0 (1.9-2.4) µg L-1, respectively. The AA profile of Chlorella sp. showed increases in glycine and decreases in isoleucine, leucine, valine, and arginine, with increasing Cu. Proteomic analysis revealed the modulation of several proteins involved in energy production pathways, including: photosynthesis, carbon fixation, glycolysis, and oxidative phosphorylation, which likely assists in meeting increased energy demands under Cu-stressed conditions. Copper exposure also caused up-regulation of cellular processes and signalling proteins, and the down-regulation of proteins related to ribosomal structure and protein translation. These changes in biomolecular pathways have direct effects on the AA profile and total protein content and provide an explanation for the observed changes in amino acid profile, cell growth and morphology. This study shows the complex mode of action of Cu on Chlorella under environmentally realistic Cu concentrations and highlights several potential biomarkers for future investigations.
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Affiliation(s)
- Manisha Shakya
- Centre for Freshwater Ecosystems, Department of Ecology, Environment and Evolution (DEEE), La Trobe University, Albury/Wodonga Campus, Vic 3690, Australia.
| | - Ewen Silvester
- Centre for Freshwater Ecosystems, Department of Ecology, Environment and Evolution (DEEE), La Trobe University, Albury/Wodonga Campus, Vic 3690, Australia
| | - Gavin Rees
- CSIRO Land and Water, and Institute of Land Water and Society, Charles Sturt University, Thurgoona, NSW 2640, Australia
| | - Kolin Harinda Rajapaksha
- La Trobe Comprehensive Proteomics Platform, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Vic 3083, Australia
| | - Pierre Faou
- La Trobe Comprehensive Proteomics Platform, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Vic 3083, Australia
| | - Aleicia Holland
- Centre for Freshwater Ecosystems, Department of Ecology, Environment and Evolution (DEEE), La Trobe University, Albury/Wodonga Campus, Vic 3690, Australia
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29
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Nowicka B. Heavy metal-induced stress in eukaryotic algae-mechanisms of heavy metal toxicity and tolerance with particular emphasis on oxidative stress in exposed cells and the role of antioxidant response. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:16860-16911. [PMID: 35006558 PMCID: PMC8873139 DOI: 10.1007/s11356-021-18419-w] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/27/2021] [Indexed: 04/15/2023]
Abstract
Heavy metals is a collective term describing metals and metalloids with a density higher than 5 g/cm3. Some of them are essential micronutrients; others do not play a positive role in living organisms. Increased anthropogenic emissions of heavy metal ions pose a serious threat to water and land ecosystems. The mechanism of heavy metal toxicity predominantly depends on (1) their high affinity to thiol groups, (2) spatial similarity to biochemical functional groups, (3) competition with essential metal cations, (4) and induction of oxidative stress. The antioxidant response is therefore crucial for providing tolerance to heavy metal-induced stress. This review aims to summarize the knowledge of heavy metal toxicity, oxidative stress and antioxidant response in eukaryotic algae. Types of ROS, their formation sites in photosynthetic cells, and the damage they cause to the cellular components are described at the beginning. Furthermore, heavy metals are characterized in more detail, including their chemical properties, roles they play in living cells, sources of contamination, biochemical mechanisms of toxicity, and stress symptoms. The following subchapters contain the description of low-molecular-weight antioxidants and ROS-detoxifying enzymes, their properties, cellular localization, and the occurrence in algae belonging to different clades, as well as the summary of the results of the experiments concerning antioxidant response in heavy metal-treated eukaryotic algae. Other mechanisms providing tolerance to metal ions are briefly outlined at the end.
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Affiliation(s)
- Beatrycze Nowicka
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Kraków, Poland.
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30
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Ranjbar S, Malcata FX. Is Genetic Engineering a Route to Enhance Microalgae-Mediated Bioremediation of Heavy Metal-Containing Effluents? Molecules 2022; 27:1473. [PMID: 35268582 PMCID: PMC8911655 DOI: 10.3390/molecules27051473] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 12/19/2022] Open
Abstract
Contamination of the biosphere by heavy metals has been rising, due to accelerated anthropogenic activities, and is nowadays, a matter of serious global concern. Removal of such inorganic pollutants from aquatic environments via biological processes has earned great popularity, for its cost-effectiveness and high efficiency, compared to conventional physicochemical methods. Among candidate organisms, microalgae offer several competitive advantages; phycoremediation has even been claimed as the next generation of wastewater treatment technologies. Furthermore, integration of microalgae-mediated wastewater treatment and bioenergy production adds favorably to the economic feasibility of the former process-with energy security coming along with environmental sustainability. However, poor biomass productivity under abiotic stress conditions has hindered the large-scale deployment of microalgae. Recent advances encompassing molecular tools for genome editing, together with the advent of multiomics technologies and computational approaches, have permitted the design of tailor-made microalgal cell factories, which encompass multiple beneficial traits, while circumventing those associated with the bioaccumulation of unfavorable chemicals. Previous studies unfolded several routes through which genetic engineering-mediated improvements appear feasible (encompassing sequestration/uptake capacity and specificity for heavy metals); they can be categorized as metal transportation, chelation, or biotransformation, with regulation of metal- and oxidative stress response, as well as cell surface engineering playing a crucial role therein. This review covers the state-of-the-art metal stress mitigation mechanisms prevalent in microalgae, and discusses putative and tested metabolic engineering approaches, aimed at further improvement of those biological processes. Finally, current research gaps and future prospects arising from use of transgenic microalgae for heavy metal phycoremediation are reviewed.
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Affiliation(s)
- Saeed Ranjbar
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal;
- Department of Chemical Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
| | - Francisco Xavier Malcata
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal;
- Department of Chemical Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
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31
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Andrade LM, Tito CA, Mascarenhas C, Lima FA, Dias M, Andrade CJ, Mendes MA, Nascimento CAO. Chlorella vulgaris phycoremediation at low Cu +2 contents: Proteomic profiling of microalgal metabolism related to fatty acids and CO 2 fixation. CHEMOSPHERE 2021; 284:131272. [PMID: 34323785 DOI: 10.1016/j.chemosphere.2021.131272] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 06/09/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
The aim of this work was to correlate metabolic changes with copper ions (Cu+2) bioremediation by microalgae C. vulgaris 097 CCMA-UFSCar at low Cu+2 content. The metabolic effects include proteome changes related to fatty acid biosynthesis (value-added product) and carbon fixation (climate change mitigation). Cu+2, even at low concentration, showed a significant negative impact on C. vulgaris growth. The microalgal bioremediation reached 100, 74, 38 and 26% for Cu+2 content at 0.1; 0.3; 0.6 and 0.9 mg L-1, respectively. Regarding proteomics, the numbers of proteins reduced (≈37%) from 581 proteins (control) to 369 proteins (0.9 mg of Cu+2 L-1) compared to control. The microalgal CO2 fixation is strictly related to the Calvin cycle, particularly phase 1, in which ribulose bisphosphate carboxylase large chain (RuBisCO) produces two phosphoglycerate molecules from CO2 and ribulose 1,5-bisphosphate. Then, phosphoglycerate can be metabolically reduced into glucose. When compared to control, the RuBisCO was underexpressed (≈50%). Similar changes in proteomic profiling of metabolism-related to fatty acid biosynthesis was observed. Nevertheless, no protein was found for the cultivation at 0.9 mg of Cu+2 L-1. Thus, the analysis of C. vulgaris proteomic data indicated that even at low concentration, Cu+2 lead to drastic metabolic changes.
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Affiliation(s)
- Lidiane Maria Andrade
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo (USP), R. Do Lago, 250, Butantã, São Paulo, SP, 05338-110, Brazil.
| | - Caique Alves Tito
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo (USP), R. Do Lago, 250, Butantã, São Paulo, SP, 05338-110, Brazil
| | - Camila Mascarenhas
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo (USP), R. Do Lago, 250, Butantã, São Paulo, SP, 05338-110, Brazil
| | - Fabiola Aliaga Lima
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo (USP), R. Do Lago, 250, Butantã, São Paulo, SP, 05338-110, Brazil
| | - Meriellen Dias
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo (USP), R. Do Lago, 250, Butantã, São Paulo, SP, 05338-110, Brazil
| | - Cristiano José Andrade
- LiEB, Integrated Laboratory of Biological Engineering, Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina (UFSC), R. Do Biotério Central, S/n - Córrego Grande, Florianópolis, SC, 88040-970, Brazil
| | - Maria Anita Mendes
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo (USP), R. Do Lago, 250, Butantã, São Paulo, SP, 05338-110, Brazil
| | - Claudio Augusto Oller Nascimento
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo (USP), R. Do Lago, 250, Butantã, São Paulo, SP, 05338-110, Brazil
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Kapkaç HA, Arslanyolu M. Identification of glutathione-S-transferase m19 and m34 among responsive GST genes against 1-chloro-2,4-dinitrobenzene treatment of Tetrahymena thermophila. Eur J Protistol 2021; 81:125838. [PMID: 34481325 DOI: 10.1016/j.ejop.2021.125838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 08/06/2021] [Accepted: 08/10/2021] [Indexed: 10/20/2022]
Abstract
Industrial xenobiotic pollutants have toxic effects on diverse organisms in their natural environments. This study aims to identify the Glutathione-S-transferases (GST) from Tetrahymena thermophila that are highly responsive to the treatment of synthetic substrate 1-chloro-2,4-dinitrobenzene (CDNB). The LD50 value of CDNB was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) test as 0.079 mM at 9 h exposure. The glutathione affinity-purified 22 kDa and 23 kDa GSTs from CDNB-treated cells were identified as GSTm19 and GSTm34 with 2D-gel electrophoresis coupled MALDI-Tof MS/MS analysis. The specific activitiy of the affinity-purified GSTs was upregulated upon the treatment of 0.072 mM CDNB with the decreased cell survival. GSTm19 and GSTm34 had also upregulated the mRNA expression under the highest dose treatment. The high cell survival and elevated total GST enzyme activity at 9 h under CDNB doses could be the result of both transcriptional upregulations as well as post-translational modifications. As a result, the cell survival of Tetrahymena thermophila was significantly affected by CDNB exposure in a concentration-dependent manner with the effect of low-dose stimulation and high-dose inhibition.
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Affiliation(s)
- Handan Açelya Kapkaç
- Eskisehir Technical University, Faculty of Sciences, Department of Biology, Yunusemre Campus, Eskisehir 26470, Turkey
| | - Muhittin Arslanyolu
- Eskisehir Technical University, Faculty of Sciences, Department of Biology, Yunusemre Campus, Eskisehir 26470, Turkey.
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Han H, Zhang H, Qin S, Zhang J, Yao L, Chen Z, Yang J. Mechanisms of Enterobacter bugandensis TJ6 immobilization of heavy metals and inhibition of Cd and Pb uptake by wheat based on metabolomics and proteomics. CHEMOSPHERE 2021; 276:130157. [PMID: 33714158 DOI: 10.1016/j.chemosphere.2021.130157] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/25/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
Microbial passivation remediation of heavy metal-contaminated farmland has attracted increasing attention. However, the molecular mechanism by which heavy metal-immobilizing bacteria inhibit the uptake of Cd and Pb by wheat is not clear. Herein, a heavy metal-immobilizing bacterium, Enterobacter bugandensis TJ6, was used to reveal its immobilization mechanisms of Cd and Pb and inhibition of Cd and Pb uptake by wheat using metabolomics and proteomics. Compared with the control, strain TJ6 significantly reduced (44.7%-56.6%) the Cd and Pb contents of wheat roots and leaves. Strain TJ6 reduced the Cd and Pb concentrations by adsorption, intracellular accumulation, and bioprecipitation in solution. Untargeted metabolomics showed that strain TJ6 produced indole-3-acetic acid (IAA), betaine, and arginine under Cd and Pb stress, significantly improving the resistance of strain TJ6 and wheat to Cd and Pb. Label-free proteomics showed that 143 proteins were upregulated and 61 proteins were downregulated in wheat roots in the presence of strain TJ6. The GO items of the differentially expressed proteins (DEPs) involved in protein-DNA complexes, DNA packaging complexes, and peroxidase activity were enriched. In addition, the ability of wheat roots to synthesize abscisic acid and jasmonic acid was improved. In conclusion, strain TJ6 reduced Cd and Pb uptake in wheat through its own adsorption of Cd and Pb and regulation of wheat root DNA repair ability, plant hormone levels, and antioxidant activities. These results provide new insights and a theoretical basis for the application of heavy metal-immobilizing bacteria in safe wheat production.
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Affiliation(s)
- Hui Han
- College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, PR China; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Hao Zhang
- College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, PR China
| | - Shanmei Qin
- College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, PR China
| | - Jun Zhang
- College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, PR China
| | - Lunguang Yao
- College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, PR China
| | - Zhaojin Chen
- College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang, 473061, PR China
| | - Jianjun Yang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.
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34
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González A, Laporte D, Moenne A. Cadmium Accumulation Involves Synthesis of Glutathione and Phytochelatins, and Activation of CDPK, CaMK, CBLPK, and MAPK Signaling Pathways in Ulva compressa. FRONTIERS IN PLANT SCIENCE 2021; 12:669096. [PMID: 34234796 PMCID: PMC8255929 DOI: 10.3389/fpls.2021.669096] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/12/2021] [Indexed: 06/13/2023]
Abstract
In order to analyze the effect of cadmium in Ulva compressa (Chlorophyta), the alga was cultivated with 10, 25, and 50 μM of cadmium for 7 days, and the level of intracellular cadmium was determined. Intracellular cadmium showed an increase on day 1, no change until day 5, and an increase on day 7. Then, the alga was cultivated with 10 μM for 7 days, and the level of hydrogen peroxide, superoxide anions, and lipoperoxides; activities of antioxidant enzymes ascorbate peroxidase (AP), dehydroascorbate reductase (DHAR), and glutathione reductase (GR); the level of glutathione (GSH) and ascorbate (ASC); and the level of phytochelatins (PCs) and transcripts encoding metallothioneins (UcMTs) levels were determined. The level of hydrogen peroxide increased at 2 and 12 h, superoxide anions on day 1, and lipoperoxides on days 3 to 5. The activities of AP and GR were increased, but not the DHAR activity. The level of GSH increased on day 1, decreased on day 3, and increased again on day 5, whereas ASC slightly increased on days 3 and 7, and activities of enzymes involved in GSH and ASC synthesis were increased on days 3 to 7. The level of PC2 and PC4 decreased on day 3 but increased again on day 5. The level of transcripts encoding UcMT1 and UcMT2 increased on days 3 to 5, mainly that of UcMT2. Thus, cadmium accumulation induced an oxidative stress condition that was mitigated by the activation of antioxidant enzymes and synthesis of GSH and ASC. Then, the alga cultivated with inhibitors of calcium-dependent protein kinases (CDPKs), calmodulin-dependent protein kinases (CaMKs), calcineurin B-like protein kinases (CBLPKs), and MAPKs and 10 μM of cadmium for 5 days showed a decrease in intracellular cadmium and in the level of GSH and PCs, with the four inhibitors, and in the level of transcripts encoding UcMTs, with two inhibitors. Thus, CDPKs, CaMK, CBLPKS, and MAPKs are involved in cadmium accumulation and GSH and PC synthesis, and GSH and PCs and/or UcMTs may participate in cadmium accumulation.
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Affiliation(s)
- Alberto González
- Laboratory of Marine Biotechnology, Faculty of Chemistry and Biology, University of Santiago, Santiago, Chile
| | - Daniel Laporte
- Laboratorio Multidisciplinario, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Talca, Chile
| | - Alejandra Moenne
- Laboratory of Marine Biotechnology, Faculty of Chemistry and Biology, University of Santiago, Santiago, Chile
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Xu M, Harmon J, Yuan D, Yan S, Lei C, Hiramatsu K, Zhou Y, Loo MH, Hasunuma T, Isozaki A, Goda K. Morphological Indicator for Directed Evolution of Euglena gracilis with a High Heavy Metal Removal Efficiency. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:7880-7889. [PMID: 33913704 DOI: 10.1021/acs.est.0c05278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In the past few decades, microalgae-based bioremediation methods for treating heavy metal (HM)-polluted wastewater have attracted much attention by virtue of their environment friendliness, cost efficiency, and sustainability. However, their HM removal efficiency is far from practical use. Directed evolution is expected to be effective for developing microalgae with a much higher HM removal efficiency, but there is no non-invasive or label-free indicator to identify them. Here, we present an intelligent cellular morphological indicator for identifying the HM removal efficiency of Euglena gracilis in a non-invasive and label-free manner. Specifically, we show a strong monotonic correlation (Spearman's ρ = -0.82, P = 2.1 × 10-5) between a morphological meta-feature recognized via our machine learning algorithms and the Cu2+ removal efficiency of 19 E. gracilis clones. Our findings firmly suggest that the morphology of E. gracilis cells can serve as an effective HM removal efficiency indicator and hence have great potential, when combined with a high-throughput image-activated cell sorter, for directed-evolution-based development of E. gracilis with an extremely high HM removal efficiency for practical wastewater treatment worldwide.
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Affiliation(s)
- Muzhen Xu
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Jeffrey Harmon
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Dan Yuan
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Sheng Yan
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Cheng Lei
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Institute of Technological Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Kotaro Hiramatsu
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Kanagawa Institute of Industrial Science and Technology, Ebina, Kanagawa 243-0435, Japan
- PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
| | - Yuqi Zhou
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mun Hong Loo
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tomohisa Hasunuma
- Graduate School of Science, Technology and Innovation, Kobe University, Hyogo, Kobe 657-8501, Japan
- Engineering Biology Research Center, Kobe University, Hyogo, Kobe 657-8501, Japan
| | - Akihiro Isozaki
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Kanagawa Institute of Industrial Science and Technology, Ebina, Kanagawa 243-0435, Japan
| | - Keisuke Goda
- Department of Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Institute of Technological Sciences, Wuhan University, Wuhan, Hubei 430072, China
- Department of Bioengineering, University of California, Los Angeles, California 90095, United States
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Abstract
Although heavy metals are naturally found in the environment as components of the earth’s crust, environmental pollution by these toxic elements has increased since the industrial revolution. Some of them can be considered essential, since they play regulatory roles in different biological processes; but the role of other heavy metals in living tissues is not clear, and once ingested they can accumulate in the organism for long periods of time causing adverse health effects. To mitigate this problem, different methods have been used to remove heavy metals from water and soil, such as chelation-based processes. However, techniques like bioremediation are leaving these conventional methodologies in the background for being more effective and eco-friendlier. Recently, different research lines have been promoted, in which several organisms have been used for bioremediation approaches. Within this context, the extremophilic microorganisms represent one of the best tools for the treatment of contaminated sites due to the biochemical and molecular properties they show. Furthermore, since it is estimated that 5% of industrial effluents are saline and hypersaline, halophilic microorganisms have been suggested as good candidates for bioremediation and treatment of this kind of samples. These microorganisms, and specifically the haloarchaea group, are of interest to design strategies aiming the removal of polluting compounds due to the efficiency of their metabolism under extreme conditions and their significant tolerance to highly toxic compounds such as heavy metals, bromate, nitrite, chlorate, or perchlorate ions. However, there are still few trials that have proven the bioremediation of environments contaminated with heavy metals using these microorganisms. This review analyses scientific literature focused on metabolic capabilities of haloarchaea that may allow these microbes to tolerate and eliminate heavy metals from the media, paying special attention to cadmium. Thus, this work will shed light on potential uses of haloarchaea in bioremediation of soils and waters negatively affected by heavy metals, and more specifically by cadmium.
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Hernández-Garnica M, García-García JD, Moreno-Sánchez R, Sánchez-Thomas R. Lead accumulation in photosynthetic Euglena gracilis depends on polyphosphates and calcium. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 272:116007. [PMID: 33246766 DOI: 10.1016/j.envpol.2020.116007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/19/2020] [Accepted: 11/03/2020] [Indexed: 06/12/2023]
Abstract
Worldwide increasing levels of lead in water systems require the search for efficient ecologically friendly strategies to remove it. Hence, lead accumulation by the free-living algae-like Euglena gracilis and its effects on cellular growth, respiration, photosynthesis, chlorophyll, calcium, and levels of thiol- and phosphate-molecules were analyzed. Photosynthetic cells were able to accumulate 4627 mg lead/kgDW after 5 days of culture with 200 μM Pb2+. Nevertheless, exposure to 50, 100 and 200 μM Pb2+ for up to 8 days did not modify growth, viability, chlorophyll content and oxygen consumption/production. Enhanced biosynthesis of thiol molecules and polyphosphates, i.e. the two canonical metal ion chelation mechanisms in E. gracilis, was not induced under such conditions. However, in cells cultured in the absence of phosphate, lead accumulation and polyphosphate content markedly decreased, while culturing in the absence of sulfate did not modify the accumulation of this metal. In turn, the total amount of intracellular calcium slightly increased as the amount of intracellular lead increased, whereas under Ca2+ deficiency lead accumulation doubled. Therefore, the results indicated that E. gracilis is highly resistant to lead through mechanisms mediated by polyphosphates and Ca2+ and can in fact be classified as a lead hyperaccumulator microorganism.
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Affiliation(s)
- M Hernández-Garnica
- Departamento de Bioquímica, Instituto Nacional de Cardiología "Ignacio Chávez", México D.F., 14080, Mexico
| | - J D García-García
- Departamento de Bioquímica, Instituto Nacional de Cardiología "Ignacio Chávez", México D.F., 14080, Mexico
| | - R Moreno-Sánchez
- Departamento de Bioquímica, Instituto Nacional de Cardiología "Ignacio Chávez", México D.F., 14080, Mexico
| | - R Sánchez-Thomas
- Departamento de Bioquímica, Instituto Nacional de Cardiología "Ignacio Chávez", México D.F., 14080, Mexico.
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Chakdar H, Hasan M, Pabbi S, Nevalainen H, Shukla P. High-throughput proteomics and metabolomic studies guide re-engineering of metabolic pathways in eukaryotic microalgae: A review. BIORESOURCE TECHNOLOGY 2021; 321:124495. [PMID: 33307484 DOI: 10.1016/j.biortech.2020.124495] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/24/2020] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
Eukaryotic microalgae are a rich source of commercially important metabolites including lipids, pigments, sugars, amino acids and enzymes. However, their inherent genetic potential is usually not enough to support high level production of metabolites of interest. In order to move on from the traditional approach of improving product yields by modification of the cultivation conditions, understanding the metabolic pathways leading to the synthesis of the bioproducts of interest is crucial. Identification of new targets for strain engineering has been greatly facilitated by the rapid development of high-throughput sequencing and spectroscopic techniques discussed in this review. Despite the availability of high throughput analytical tools, examples of gathering and application of proteomic and metabolomic data for metabolic engineering of microalgae are few and mainly limited to lipid production. The present review highlights the application of contemporary proteomic and metabolomic techniques in eukaryotic microalgae for redesigning pathways for enhanced production of algal metabolites.
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Affiliation(s)
- Hillol Chakdar
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Maunath Bhanjan, Uttar Pradesh 275103, India
| | - Mafruha Hasan
- School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia
| | - Sunil Pabbi
- Centre for Conservation and Utilisation of Blue Green Algae (CCUBGA), Division of Microbiology, ICAR - Indian Agricultural Research Institute, New Delhi 110 012
| | - Helena Nevalainen
- Department of Molecular Sciences, Macquarie University, NSW 2109, Australia; Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India; School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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Guo H, Chen T, Liang Z, Fan L, Shen Y, Zhou D. iTRAQ and PRM-based comparative proteomic profiling in gills of white shrimp Litopenaeus vannamei under copper stress. CHEMOSPHERE 2021; 263:128270. [PMID: 33297214 DOI: 10.1016/j.chemosphere.2020.128270] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 05/11/2023]
Abstract
Crustaceans are particularly sensitive to heavy metal pollution. Copper (Cu) is one of typical heavy metal pollutants in aquatic ecosystems. However, limited attention has been paid on the proteomic responses of shrimp under Cu stress. White shrimp Litopenaeus vannamei held in 5‰ seawater were exposed to 5 mg L-1 Cu for 3 h, and the regulatory mechanism in the gills was elucidated using iTRAQ-based quantitative proteomics. The results showed that a total of 5034 proteins were identified, 385 differentially expressed proteins (DEPs), including 147 differentially up-regulated proteins (DUPs) and 238 differentially down-regulated proteins (DDPs) were found. Bioinformatics analysis indicated the DEPs responding to Cu stress mainly involved in cytoskeleton, immune response, stress response, protein synthesis, detoxification, ion homeostasis and apoptosis. Furthermore, we still performed PRM analysis on sarcoplasmic calcium binding protein (SCP), serine proteinase inhibitor B3 (SPIB3), C-type lectin 4 (CTL4), cathepsin L (CATHL), JHE-like carboxylesterase 1 (CXE1) and paramyosin (PMY), and biochemical analysis on Cu/Zn-superoxide dismutase (Cu/Zn-SOD) to validate the iTRAQ results, respectively. The present proteome analysis revealed that Cu stress disrupted the ion homeostasis and protein synthesis, and L.vannamei mainly regulates a series of molecular pathways which contained many key proteins involved in the immune process to protect the organism from Cu stress. Our data provides more insight about the underlying mechanisms that related to the stress response of Cu exposure in crustacean.
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Affiliation(s)
- Hui Guo
- College of Fisheries, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals & Key Laboratory of Control for Diseases of Aquatic Economic Animals of Guangdong Higher Education Institute, Zhanjiang, China
| | - Tianci Chen
- College of Fisheries, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals & Key Laboratory of Control for Diseases of Aquatic Economic Animals of Guangdong Higher Education Institute, Zhanjiang, China
| | - Zhi Liang
- College of Fisheries, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals & Key Laboratory of Control for Diseases of Aquatic Economic Animals of Guangdong Higher Education Institute, Zhanjiang, China
| | - Lanfen Fan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Yuchun Shen
- College of Fisheries, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals & Key Laboratory of Control for Diseases of Aquatic Economic Animals of Guangdong Higher Education Institute, Zhanjiang, China.
| | - Dayan Zhou
- Aquatic Species Introduction and Breeding Center of Guangxi Zhuang Autonomous Region, Nanning, 530031, China.
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40
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López-Pedrouso M, Varela Z, Franco D, Fernández JA, Aboal JR. Can proteomics contribute to biomonitoring of aquatic pollution? A critical review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115473. [PMID: 32882465 DOI: 10.1016/j.envpol.2020.115473] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/14/2020] [Accepted: 08/18/2020] [Indexed: 06/11/2023]
Abstract
Aquatic pollution is one of the greatest environmental problems, and therefore its control represents one of the major challenges in this century. In recent years, proteomics has emerged as a powerful tool for searching protein biomarkers in the field of pollution biomonitoring. For biomonitoring marine contamination, there is a consensus that bivalves are preferred organisms to assess organic and inorganic pollutants. Thus, the bivalve proteome was intensively studied, particularly the mussel. It is well documented that heavy metal pollution and organic chemicals altered the structural proteins causing degradation of tissues of molluscs. Also, it is well known that proteins involved in stress oxidative such as glutathione and enzymes as catalase, superoxide dismutase or peroxisomes are overexpressed in response to contaminants. Additionally, using bivalves, other groups of proteins proposed as pollution biomarkers are the metabolic proteins. Even though other marine species are used to monitor the pollution, the presence of proteomic tools in these studies is scarce. Concerning freshwater pollution field, a great variety of animal species (fish and crustaceans) are used as biomonitors in proteomics studies compared to plants that are scarcely analysed. In fish species, proteins involved in stress oxidative such as heat shock family or proteins from lipid and carbohydrate metabolism were proposed as candidate biomarkers. On the contrary, for crustaceans there is a lack of proteomic studies individually assessing the contaminants. Novel scenarios, including emerging contaminants and new threats, will require proteomic technology for a systematic search of protein biomarkers and a greater knowledge at molecular level of those cellular pathways induced by contamination.
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Affiliation(s)
- M López-Pedrouso
- Department of Zoology, Genetics and Physical Anthropology, University of Santiago de Compostela, Santiago de Compostela, 15872, A Coruña, Spain.
| | - Z Varela
- CRETUS Institute, Department of Functional Biology, Ecology Unit, University of Santiago de Compostela, Santiago de Compostela, 15872, A Coruña, Spain
| | - D Franco
- Centro Tecnológico de La Carne de Galicia, Rúa Galicia Nº 4, Parque Tecnológico de Galicia, San Cibrao Das Viñas, 32900, Ourense, Spain
| | - J A Fernández
- CRETUS Institute, Department of Functional Biology, Ecology Unit, University of Santiago de Compostela, Santiago de Compostela, 15872, A Coruña, Spain
| | - J R Aboal
- CRETUS Institute, Department of Functional Biology, Ecology Unit, University of Santiago de Compostela, Santiago de Compostela, 15872, A Coruña, Spain
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41
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Balaram V. Microwave plasma atomic emission spectrometry (MP-AES) and its applications – A critical review. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105483] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Khatiwada B, Sunna A, Nevalainen H. Molecular tools and applications of Euglena gracilis: From biorefineries to bioremediation. Biotechnol Bioeng 2020; 117:3952-3967. [PMID: 32710635 DOI: 10.1002/bit.27516] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 06/17/2020] [Accepted: 07/23/2020] [Indexed: 12/19/2022]
Abstract
Euglena gracilis is a promising source of commercially important metabolites such as vitamins, wax esters, paramylon, and amino acids. However, the molecular tools available to create improved Euglena strains are limited compared to other microorganisms that are currently exploited in the biotechnology industry. The complex poly-endosymbiotic nature of the Euglena genome is a major bottleneck for obtaining a complete genome sequence and thus represents a notable shortcoming in gaining molecular information of this organism. Therefore, the studies and applications have been more focused on using the wild-type strain or its variants and optimizing the nutrient composition and cultivation conditions to enhance the production of biomass and valuable metabolites. In addition to producing metabolites, the E. gracilis biorefinery concept also provides means for the production of biofuels and biogas as well as residual biomass for the remediation of industrial and municipal wastewater. Using Euglena for bioremediation of environments contaminated with heavy metals is of special interest due to the strong ability of the organism to accumulate and sequester these compounds. The published draft genome and transcriptome will serve as a basis for further molecular studies of Euglena and provide a guide for the engineering of metabolic pathways of relevance for the already established as well as novel applications.
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Affiliation(s)
- Bishal Khatiwada
- Department Molecular Sciences, Macquarie University, Sydney, Australia.,Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, Australia
| | - Anwar Sunna
- Department Molecular Sciences, Macquarie University, Sydney, Australia.,Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, Australia
| | - Helena Nevalainen
- Department Molecular Sciences, Macquarie University, Sydney, Australia.,Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, Australia
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Ibuot A, Dean AP, Pittman JK. Multi-genomic analysis of the cation diffusion facilitator transporters from algae. Metallomics 2020; 12:617-630. [PMID: 32195517 DOI: 10.1039/d0mt00009d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Metal transport processes are relatively poorly understood in algae in comparison to higher plants and other eukaryotes. A screen of genomes from 33 taxonomically diverse algal species was conducted to identify members of the Cation Diffusion Facilitator (CDF) family of metal ion transporter. All algal genomes contained at least one CDF gene with four species having >10 CDF genes (median of 5 genes per genome), further confirming that this is a ubiquitous gene family. Phylogenetic analysis suggested a CDF gene organisation of five groups, which includes Zn-CDF, Fe/Zn-CDF and Mn-CDF groups, consistent with previous phylogenetic analyses, and two functionally undefined groups. One of these undefined groups was algal specific although excluded chlorophyte and rhodophyte sequences. The majority of sequences (22 out of 26 sequences) from this group had a putative ion binding site motif within transmembrane domain 2 and 5 that was distinct from other CDF proteins, such that alanine or serine replaced the conserved histidine residue. The phylogenetic grouping was supported by sequence cluster analysis. Yeast heterologous expression of CDF proteins from Chlamydomonas reinhardtii indicated Zn2+ and Co2+ transport function by CrMTP1, and Mn2+ transport function by CrMTP2, CrMTP3 and CrMTP4, which validated the phylogenetic prediction. However, the Mn-CDF protein CrMTP3 was also able to provide zinc and cobalt tolerance to the Zn- and Co-sensitive zrc1 cot1 yeast strain. There is wide diversity of CDF transporters within the algae lineage, and some of these genes may be attractive targets for future applications of metal content engineering in plants or microorganisms.
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Affiliation(s)
- Aniefon Ibuot
- Department of Science Technology, Akwa Ibom State Polytechnic, P.M.B. 1200 Ikot Ekpene, Ikot Osurua, Akwa Ibom State, Nigeria
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Khatiwada B, Hasan MT, Sun A, Kamath KS, Mirzaei M, Sunna A, Nevalainen H. Probing the Role of the Chloroplasts in Heavy Metal Tolerance and Accumulation in Euglena gracilis. Microorganisms 2020; 8:E115. [PMID: 31947612 PMCID: PMC7023027 DOI: 10.3390/microorganisms8010115] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/11/2020] [Accepted: 01/12/2020] [Indexed: 12/02/2022] Open
Abstract
The E. gracilis Zm-strain lacking chloroplasts, characterized in this study, was compared with the earlier assessed wild type Z-strain to explore the role of chloroplasts in heavy metal accumulation and tolerance. Comparison of the minimum inhibitory concentration (MIC) values indicated that both strains tolerated similar concentrations of mercury (Hg) and lead (Pb), but cadmium (Cd) tolerance of the Z-strain was twice that of the Zm-strain. The ability of the Zm-strain to accumulate Hg was higher compared to the Z-strain, indicating the existence of a Hg transportation and accumulation mechanism not depending on the presence of chloroplasts. Transmission electron microscopy (TEM) showed maximum accumulation of Hg in the cytosol of the Zm-strain and highest accumulation of Cd in the chloroplasts of the Z-strain indicating a difference in the ability of the two strains to deposit heavy metals in the cell. The highly abundant heavy metal transporter MTP2 in the Z-strain may have a role in Cd transportation to the chloroplasts. A multidrug resistance-associated protein highly increased in abundance in the Zm-strain could be a potential Hg transporter to either cytosol or mitochondria. Overall, the chloroplasts appear to have major role in the tolerance and accumulation of Cd in E. gracilis.
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Affiliation(s)
- Bishal Khatiwada
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Mafruha T. Hasan
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Angela Sun
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Karthik Shantharam Kamath
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW 2109, Australia
| | - Mehdi Mirzaei
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW 2109, Australia
| | - Anwar Sunna
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Helena Nevalainen
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
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45
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Sun H, Wu L, Hao Y, Liu C, Pan L, Zhu Z. Tolerance mechanism of Trichoderma asperellum to Pb2+: response changes of related active ingredients under Pb2+ stress. RSC Adv 2020; 10:5202-5211. [PMID: 35498294 PMCID: PMC9049547 DOI: 10.1039/c9ra10517d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 01/17/2020] [Indexed: 11/21/2022] Open
Abstract
Trichoderma asperellum ZZY has good tolerance to Pb2+, but the tolerance mechanism is not clear.
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Affiliation(s)
- Huiqing Sun
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- PR China
- Key Laboratory of Food Nutrition and Safety
| | - Lingran Wu
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- PR China
- Key Laboratory of Food Nutrition and Safety
| | - Yali Hao
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- PR China
- Key Laboratory of Food Nutrition and Safety
| | - Chunyu Liu
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- PR China
- Key Laboratory of Food Nutrition and Safety
| | - Lichao Pan
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- PR China
- Key Laboratory of Food Nutrition and Safety
| | - Zhenyuan Zhu
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- PR China
- Key Laboratory of Food Nutrition and Safety
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