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Webb RJ, Cuff C, Berger L. Glutathione-Mediated Metal Tolerance in an Amphibian Chytrid Fungus (Batrachochytrium dendrobatidis). ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2024; 43:1583-1591. [PMID: 38726969 DOI: 10.1002/etc.5885] [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: 01/02/2024] [Revised: 02/21/2024] [Accepted: 04/07/2024] [Indexed: 06/27/2024]
Abstract
The spread of the amphibian chytrid fungus Batrachochytrium dendrobatidis, which causes the disease chytridiomycosis, has resulted in amphibian declines and extinctions worldwide. Some susceptible amphibian species can persist in contaminated habitats, prompting the hypothesis that B. dendrobatidis might be sensitive to heavy metals. We tested a panel of 12 metals to rank their toxicity to B. dendrobatidis zoospores and zoosporangia during a 6-h exposure. To better understand the mechanism for metal detoxification, we also evaluated whether glutathione is required for metal tolerance by depleting cellular glutathione before metal exposure. In addition, we investigated whether prior exposure to low metal concentrations impacted tolerance of subsequent exposure, as well as identifying metal combinations that may act synergistically. Silver (Ag), cadmium (Cd), and copper (Cu) were particularly toxic to B. dendrobatidis, with zoospore minimum lethal concentration values of 0.01 mM (Ag), 0.025 mM (Cd), and 0.5 mM (Cu). These three metals along with zinc (Zn) were also inhibitory to zoosporangia, with minimum inhibitory concentration values of 0.005 mM (Ag), 0.04 mM (Cd), 0.075 mM (Cu), and 0.04 mM (Zn). The fungicidal effects of several metals was reduced when assays were conducted in nutrient medium compared with synthetic pond water, highlighting the need for careful in vitro assay design and interpretation. Glutathione depletion strongly influenced tolerance of Cd and Ag (85% and 75% less growth, respectively) and moderately influenced tolerance of Cu, Zn, and lead (37%, 18%, and 14% less growth, respectively), indicating the importance of glutathione for metal detoxification. In general, the minimum metal concentrations that inhibited growth of B. dendrobatidis far exceeded values detected in contaminated amphibian habitats in Australia, suggesting that metal contamination alone may not have a strong protective effect against chytridiomycosis. We discuss future research directions to futher understand the potential for dissolved metals to create chytrid refuges. Environ Toxicol Chem 2024;43:1583-1591. © 2024 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Rebecca J Webb
- Melbourne Veterinary School, University of Melbourne, Werribee, Victoria, Australia
| | | | - Lee Berger
- Melbourne Veterinary School, University of Melbourne, Werribee, Victoria, Australia
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2
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Sarrazin SLF, Bourdineaud JP, Maia JGS, Mourão RHV, Oliveira RB. Antifungal chemosensitization through induction of oxidative stress: A model for control of candidiasis based on the Lippia origanoides essential oil. AN ACAD BRAS CIENC 2024; 96:e20230532. [PMID: 38597491 DOI: 10.1590/0001-3765202420230532] [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: 05/09/2023] [Accepted: 08/07/2023] [Indexed: 04/11/2024] Open
Abstract
In this work, evaluated the antifungal chemosensitizing effect of the Lippia origanoides essential oil (EO) through the induction of oxidative stress. The EO was obtained by hydrodistillation and analyzed by GC-MS. To evaluate the antifungal chemosensitizing effect through induction of oxidative stress, cultures of the model yeast Saccharomyces cerevisiae ∆ycf1 were exposed to sub-inhibitory concentrations of the EO, and the expression of genes known, due be overexpressed in response to oxidative and mutagenic stress was analyzed by quantitative real-time polymerase chain reaction (qRT-PCR) method. Carvacrol and thymol were identified as the main components. The EO was effective in preventing or reducing the growth of the microorganisms tested. The gene expression profiles showed that EO promoted changes in the patterns of expression of genes involved in oxidative and mutagenic stress resistance. The combined use of the L. origanoides EO with fluconazole has been tested on Candida yeasts and the strategy resulted in a synergistic enhancement of the antifungal action of the azolic chemical product. Indeed, in association with EO, the fluconazole MICs dropped. Thus, the combinatorial use of L. origanoides EO as a chemosensitizer agent should contribute to enhancing the efficiency of conventional antifungal drugs, reducing their negative side effects.
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Affiliation(s)
- Sandra Layse F Sarrazin
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Oeste doPará, Campus Tapajós, Bloco Modular I, Avenida Vera Paz, s/n, 68040-255 Santarém, PR, Brazil
| | - Jean-Paul Bourdineaud
- University of Bordeaux, CNRS, UMR 5234, Fundamental Microbiology and Pathogenicity Laboratory, European Institute of Chemistry and Biology, 2 Rue Robert Escarpit, 33607 Pessac, France
| | - José Guilherme S Maia
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pará, Rua Augusto Corrêa, 01, Guamá, 66075-110 Belém, PA, Brazil
| | - Rosa Helena V Mourão
- Programa de Pós-Graduação Doutorado em Rede de Biodiversidade e Biotecnologia (BIONORTE/Polo Pará), Universidade Federal do Oeste do Pará, Campus Tapajós, Bloco Modular I, Avenida Vera Paz, s/n, 68040-255 Santarém, PR, Brazil
| | - Ricardo B Oliveira
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Oeste doPará, Campus Tapajós, Bloco Modular I, Avenida Vera Paz, s/n, 68040-255 Santarém, PR, Brazil
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Xie Q, Deng W, Su Y, Ma L, Yang H, Yao F, Lin W. Transcriptome Analysis Reveals Novel Insights into the Hyperaccumulator Phytolacca acinosa Roxb. Responses to Cadmium Stress. PLANTS (BASEL, SWITZERLAND) 2024; 13:297. [PMID: 38256850 PMCID: PMC10819451 DOI: 10.3390/plants13020297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/04/2024] [Accepted: 01/15/2024] [Indexed: 01/24/2024]
Abstract
Cadmium (Cd) is a highly toxic heavy metal that causes serious damage to plant and human health. Phytolacca acinosa Roxb. has a large amount of aboveground biomass and a rapid growth rate, and it has been identified as a novel type of Cd hyperaccumulator that can be harnessed for phytoremediation. However, the molecular mechanisms underlying the response of P. acinosa to Cd2+ stress remain largely unclear. In this study, the phenotype, biochemical, and physiological traits of P. acinosa seeds and seedlings were analyzed under different concentrations of Cd2+ treatments. The results showed higher Cd2+ tolerance of P. acinosa compared to common plants. Meanwhile, the Cd2+ content in shoots reached 449 mg/kg under 10 mg/L Cd2+ treatment, which was obviously higher than the threshold for Cd hyperaccumulators. To investigate the molecular mechanism underlying the adaptability of P. acinosa to Cd stress, RNA-Seq was used to examine transcriptional responses of P. acinosa to Cd stress. Transcriptome analysis found that 61 genes encoding TFs, 48 cell wall-related genes, 35 secondary metabolism-related genes, 133 membrane proteins and ion transporters, and 96 defense system-related genes were differentially expressed under Cd2+ stress, indicating that a series of genes were involved in Cd2+ stress, forming a complex signaling regulatory mechanism. These results provide new scientific evidence for elucidating the regulatory mechanisms of P. acinosa response to Cd2+ stress and new clues for the molecular breeding of heavy metal phytoremediation.
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Affiliation(s)
- Qin Xie
- College of Pharmacy, Xiangnan University, Chenzhou 423099, China; (Q.X.)
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128, China
| | - Wentao Deng
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128, China
| | - Yi Su
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128, China
| | - Liying Ma
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128, China
| | - Haijun Yang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Feihong Yao
- College of Pharmacy, Xiangnan University, Chenzhou 423099, China; (Q.X.)
| | - Wanhuang Lin
- Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128, China
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Webb RJ, Rush C, Berger L, Skerratt LF, Roberts AA. Glutathione is required for growth and cadmium tolerance in the amphibian chytrid fungus, Batrachochytrium dendrobatidis. Biochimie 2023; 220:22-30. [PMID: 38104714 DOI: 10.1016/j.biochi.2023.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 11/24/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
Batrachochytrium dendrobatidis (Bd) is a lethal amphibian pathogen, partly due to its ability to evade the immune system of susceptible frog species. In many pathogenic fungi, the antioxidant glutathione is a virulence factor that helps neutralise oxidative stressors generated from host immune cells, as well as other environmental stressors such as heavy metals. The role of glutathione in stress tolerance in Bd has not been investigated. Here, we examine the changes in the glutathione pool after stress exposure and quantify the effect of glutathione depletion on cell growth and stress tolerance. Depletion of glutathione repressed growth and release of zoospores, suggesting that glutathione is essential for life cycle completion in Bd. Supplementation with <2 mM exogenous glutathione accelerated zoospore development, but concentrations >2 mM were strongly inhibitory to Bd cells. While hydrogen peroxide exposure lowered the total cellular glutathione levels by 42 %, glutathione depletion did not increase the sensitivity to hydrogen peroxide. Exposure to cadmium increased total cellular glutathione levels by 93 %. Glutathione-depleted cells were more sensitive to cadmium, and this effect was attenuated by glutathione supplementation, suggesting that glutathione plays an important role in cadmium tolerance. The effects of heat and salt were exacerbated by the addition of exogenous glutathione. The impact of glutathione levels on Bd stress sensitivity may help explain differences in host susceptibility to chytridiomycosis and may provide opportunities for synergistic therapeutics.
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Affiliation(s)
- Rebecca J Webb
- James Cook University, Townsville, QLD, 4811, Australia; Melbourne Veterinary School, University of Melbourne, Werribee, VIC, 3030, Australia.
| | | | - Lee Berger
- Melbourne Veterinary School, University of Melbourne, Werribee, VIC, 3030, Australia
| | - Lee F Skerratt
- Melbourne Veterinary School, University of Melbourne, Werribee, VIC, 3030, Australia
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Zhang S, Ke C, Jiang M, Li Y, Huang W, Dang Z, Guo C. S(-II) reactivates Cd 2+-stressed Shewanella oneidensis via promoting low-molecular-weight thiols synthesis and activating antioxidant defense. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 327:121516. [PMID: 36972810 DOI: 10.1016/j.envpol.2023.121516] [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: 11/28/2022] [Revised: 03/15/2023] [Accepted: 03/24/2023] [Indexed: 06/18/2023]
Abstract
Efficient remedies for living organisms including bacteria to counteract cadmium (Cd2+) toxicity are still highly needed. Plant toxicity studies have showed that exogenous S(-II) (including hydrogen sulfide and its ionic forms, i.e., H2S, HS-, and S2-) application can effectively alleviate adverse effects of Cd stress, but whether S(-II) could mitigate bacterial Cd toxicity remains unclear. In this study, S(-II) was applied exogenously to Cd-stressed Shewanella oneidensis MR-1 and the results showed that S(-II) can significantly reactivate impaired physiological processes including growth arrest and enzymatic ferric (Fe(III) reduction inhibition. The efficacy of S(-II) treatment is negatively correlated with the concentration and time length of Cd exposure. Energy-dispersive X-ray (EDX) analysis suggested the presence of cadmium sulfide inside cells treated with S(-II). Both compared proteomic analysis and RT-qPCR showed that enzymes associated with sulfate transport, sulfur assimilation, methionine, and glutathione biosynthesis were up-regulated in both mRNA and protein levels after the treatment, indicating S(-II) may induce the biosynthesis of functional low-molecular-weight (LMW) thiols to counteract Cd toxicity. Meanwhile, the antioxidant enzymes were positively modulated by S(-II) and thus the activity of intracellular reactive oxygen species was attenuated. The study demonstrated that exogenous S(-II) can effectively alleviate Cd stress for S. oneidensis likely through inducing intracellular trapping mechanisms and modulating cellular redox status. It suggested that S(-II) may be a highly effective remedy for bacteria such as S. oneidensis under Cd-polluted environments.
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Affiliation(s)
- Siyu Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China
| | - Changdong Ke
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China
| | - Mengge Jiang
- Guangzhou Metro Group Co., Ltd., Guangzhou, 510335, China
| | - Yuancheng Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China
| | - Weilin Huang
- Department of Environmental Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China
| | - Chuling Guo
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China.
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González-Lozano KJ, Aréchiga-Carvajal ET, Jiménez-Salas Z, Valdez-Rodríguez DM, León-Ramírez CG, Ruiz-Herrera J, Adame-Rodríguez JM, López-Cabanillas-Lomelí M, Campos-Góngora E. Identification and Characterization of Dmct: A Cation Transporter in Yarrowia lipolytica Involved in Metal Tolerance. J Fungi (Basel) 2023; 9:600. [PMID: 37367535 DOI: 10.3390/jof9060600] [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: 03/03/2023] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 06/28/2023] Open
Abstract
Yarrowia lipolytica is a dimorphic fungus used as a model organism to investigate diverse biotechnological and biological processes, such as cell differentiation, heterologous protein production, and bioremediation strategies. However, little is known about the biological processes responsible for cation concentration homeostasis. Metals play pivotal roles in critical biochemical processes, and some are toxic at unbalanced intracellular concentrations. Membrane transport proteins control intracellular cation concentrations. Analysis of the Y. lipolytica genome revealed a characteristic functional domain of the cation efflux protein family, i.e., YALI0F19734g, which encodes YALI0F19734p (a putative Yl-Dmct protein), which is related to divalent metal cation tolerance. We report the in silico analysis of the putative Yl-Dmct protein's characteristics and the phenotypic response to divalent cations (Ca2+, Cu2+, Fe2+, and Zn2+) in the presence of mutant strains, Δdmct and Rdmct, constructed by deletion and reinsertion of the DMCT gene, respectively. The absence of the Yl-Dmct protein induces cellular and growth rate changes, as well as dimorphism differences, when calcium, copper, iron, and zinc are added to the cultured medium. Interestingly, the parental and mutant strains were able to internalize the ions. Our results suggest that the protein encoded by the DMCT gene is involved in cell development and cation homeostasis in Y. lipolytica.
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Affiliation(s)
- Katia Jamileth González-Lozano
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Departamento de Microbiología, LMYF, Unidad de Manipulación Genética, Monterrey CP 66455, Nuevo León, Mexico
| | - Elva Teresa Aréchiga-Carvajal
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Departamento de Microbiología, LMYF, Unidad de Manipulación Genética, Monterrey CP 66455, Nuevo León, Mexico
| | - Zacarías Jiménez-Salas
- Universidad Autónoma de Nuevo León, Centro de Investigación en Nutrición y Salud Pública, Monterrey CP 64460, Nuevo León, Mexico
| | - Debany Marlen Valdez-Rodríguez
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Departamento de Microbiología, LMYF, Unidad de Manipulación Genética, Monterrey CP 66455, Nuevo León, Mexico
| | - Claudia Geraldine León-Ramírez
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Irapuato, Departamento de Ingeniería Genética, Irapuato CP 36824, Guanajuato, Mexico
| | - José Ruiz-Herrera
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Irapuato, Departamento de Ingeniería Genética, Irapuato CP 36824, Guanajuato, Mexico
| | - Juan Manuel Adame-Rodríguez
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Departamento de Microbiología, LMYF, Unidad de Manipulación Genética, Monterrey CP 66455, Nuevo León, Mexico
| | - Manuel López-Cabanillas-Lomelí
- Universidad Autónoma de Nuevo León, Centro de Investigación en Nutrición y Salud Pública, Monterrey CP 64460, Nuevo León, Mexico
| | - Eduardo Campos-Góngora
- Universidad Autónoma de Nuevo León, Centro de Investigación en Nutrición y Salud Pública, Monterrey CP 64460, Nuevo León, Mexico
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Zheng J, Xie X, Li C, Wang H, Yu Y, Huang B. Regulation mechanism of plant response to heavy metal stress mediated by endophytic fungi. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 25:1596-1613. [PMID: 36786203 DOI: 10.1080/15226514.2023.2176466] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Endophytic fungi exist widely in plants and play an important role in the growth and adaptation of plants. They could be used in phytoremediation techniques against heavy metal contaminated soil since beneficial microbial symbionts can endow plants with resistance to external heavy metal stresses. This review summarized the regulation mechanism of plant response to heavy metal stress mediated by endophytic fungi. Potential endophytic fungi in enhancing plant's adaption to heavy metal stresses include arbuscular mycorrhizal fungi, dark septate endophytic fungi, plant growth promoting endophytic fungi. The mechanisms involve coevolution strategy, immune regulation and detoxification transport to improve the ability of plants to adapt to heavy metal stress. They can increase the synthesis of host hormones and maintaining the balance of endogenous hormones, strengthen osmotic regulation, regulate carbon and nitrogen metabolism, and increase immune activity, antioxidant enzyme and glutathione activity. They also help to improve the detoxification transport and heavy metal emission capacity of the host by significantly producing iron carrier, metallothionein and 1-aminocyclopropane-1-carboxylic acid deaminase. The combination of endophytic fungi and hyperaccumulation plants provides a promising technology for the ecological restoration of heavy metal contaminated soil. Endophytic fungi reserves further development on enhancing host plant's adaptability to heavy metal stresses.
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Affiliation(s)
- Jiadong Zheng
- School of Pharmacy, Naval Medical University, Shanghai, China
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xingguang Xie
- School of Pharmacy, Naval Medical University, Shanghai, China
| | - Chunyan Li
- School of Pharmacy, Naval Medical University, Shanghai, China
| | - Hongxia Wang
- School of Pharmacy, Naval Medical University, Shanghai, China
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Yaru Yu
- School of Pharmacy, Naval Medical University, Shanghai, China
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Baokang Huang
- School of Pharmacy, Naval Medical University, Shanghai, China
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Saez-Zamacona I, Grindlay G, Martínez-Espinosa RM. Evaluation of Haloferax mediterranei Strain R4 Capabilities for Cadmium Removal from Brines. Mar Drugs 2023; 21:md21020072. [PMID: 36827113 PMCID: PMC9960891 DOI: 10.3390/md21020072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/08/2023] [Accepted: 01/18/2023] [Indexed: 01/24/2023] Open
Abstract
Haloferax mediterranei has revealed a high bioremediation potential for several inorganic anions (e.g., nitrates and nitrites) and metals from hypersaline waters and brines. However, it is unclear, to date, whether this microorganism allows Cd (II) bioremediation. Consequently, the main objective of this work was to assess the Cd (II) bioremediation potential of Hfx. mediterranei R4. To this end, Hfx. mediterranei cell growth rate and metal bioaccumulation were investigated using different culture media (complex, CM, and defined medium, DM) containing Cd (II) up to 1 mM. In addition, the elemental profile of the biomass (i.e., Al, Ba, Ca, Co, Cu, Fe, K, Mg, Mn, Na, Ni, Sr and Zn) has also been monitored to gain insight into the metabolic processes that may be taking place at the intracellular level for Cd (II) removal. Because of the formation of CdS precipitate, CM is not a suitable culture media for evaluating Cd bioremediation since metal concentration could not be appropriately controlled. When operating in DM, it was observed that the cell doubling time increases three times in the presence of Cd (II). Hfx. mediterranei can bioaccumulate Cd, showing the highest significant accumulation at concentrations of 0.4 mM (108 ± 12 mg Cd/g dry tissue). Finally, the presence of Cd (II) affects the content of K, Mg, Mn and Zn in the biomass, by increasing K levels up to 27 ± 18% and Mn up to 310 ± 140% and reducing Mg levels up to 55 ± 36% and Zn up to 30 ± 4%. These results suggest that different mechanisms are involved in Cd (II) tolerance by Hfx. mediterranei, resulting in increasing the cell concentration of stress-tolerant elements in the biomass (K and Mn), while lowering the concentration of elements which Cd (II) competes with (Mg and Zn), and that all affects the physiological response of the organism by decreasing its growth rate.
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Affiliation(s)
- Iraide Saez-Zamacona
- Multidisciplinary Institute for Environmental Studies “Ramón Margalef”, University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - Guillermo Grindlay
- Department of Analytical Chemistry, Nutrition and Food Sciences, Faculty of Sciences, University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - Rosa María Martínez-Espinosa
- Multidisciplinary Institute for Environmental Studies “Ramón Margalef”, University of Alicante, Ap. 99, E-03080 Alicante, Spain
- Biochemistry, Molecular Biology, Edaphology and Agricultural Chemistry Department, Faculty of Sciences, University of Alicante, Ap. 99, E-03080 Alicante, Spain
- Correspondence: ; Tel.: +349-6590-3400 (ext. 1258 or 8841)
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Li X, Sun M, Zhang L, Finlay RD, Liu R, Lian B. Widespread bacterial responses and their mechanism of bacterial metallogenic detoxification under high concentrations of heavy metals. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 246:114193. [PMID: 36270034 DOI: 10.1016/j.ecoenv.2022.114193] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/06/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Microbial mineralization is increasingly used in bioremediation of heavy metal pollution, but better mechanistic understanding of the processes involved and how they are regulated are required to improve the practical application of microorganisms in bioremediation. We used a combination of morphological (TEM) and analytical (XRD, XPS, FTIR) methods, together with novel proteomic analyses, to investigate the detoxification mechanisms, used by a range of bacteria, including the strains Bacillus velezensis LB002, Escherichia coli DH5α, B. subtilis 168, Pseudomonas putida KT2440, and B. licheniformis MT-1, exposed to elevated concentrations of Cd2+ and combinations of Cd2+, Pb2+, Cu2+, and Zn2+, in the presence and absence of added CaCl2. Common features of detoxification included biomineralization, including the production of biological vaterite, up-regulation of proteins involved in flagellar movement and chemotaxis, biofilm synthesis, transmembrane transport of small molecules and organic matter decomposition. The putative roles of differentially expressed proteins in detoxification are discussed in relation to chemical and morphological data and together provide important tools to improve screening, selection, and practical application of bacterial isolates in bioremediation of polluted environments.
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Affiliation(s)
- Xiaofang Li
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
| | - Menglin Sun
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
| | - Luting Zhang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
| | - Roger D Finlay
- Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, 75007, Uppsala, Sweden.
| | - Renlu Liu
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China; School of Life Sciences, Key Laboratory of Agricultural Environmental Pollution Prevention and Control in Red Soil Hilly Region of Jiangxi Province, Jinggangshan University, Ji'an 343009, China.
| | - Bin Lian
- College of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China.
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10
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Sánchez-Rojas T, Espinoza-Culupú A, Ramírez P, Iwai LK, Montoni F, Macedo-Prada D, Sulca-López M, Durán Y, Farfán-López M, Herencia J. Proteomic Study of Response to Copper, Cadmium, and Chrome Ion Stress in Yarrowia lipolytica Strains Isolated from Andean Mine Tailings in Peru. Microorganisms 2022; 10:microorganisms10102002. [PMID: 36296278 PMCID: PMC9611812 DOI: 10.3390/microorganisms10102002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/22/2022] [Accepted: 10/02/2022] [Indexed: 11/16/2022] Open
Abstract
Mine tailings are produced by mining activities and contain diverse heavy metal ions, which cause environmental problems and have negative impacts on ecosystems. Different microorganisms, including yeasts, play important roles in the absorption and/or adsorption of these heavy metal ions. This work aimed to analyze proteins synthesized by the yeast Yarrowia lipolytica AMJ6 (Yl-AMJ6), isolated from Andean mine tailings in Peru and subjected to stress conditions with common heavy metal ions. Yeast strains were isolated from high Andean water samples impacted by mine tailings from Yanamate (Pasco, Peru). Among all the isolated yeasts, the Yl-AMJ6 strain presented LC50 values of 1.06 mM, 1.42 mM, and 0.49 mM for the Cr+6, Cu+2, and Cd+2 ions, respectively. Proteomic analysis of theYl-AMJ6 strain under heavy metal stress showed that several proteins were up- or downregulated. Biological and functional analysis of these proteins showed that they were involved in the metabolism of proteins, nucleic acids, and carbohydrates; response to oxidative stress and protein folding; ATP synthesis and ion transport; membrane and cell wall; and cell division. The most prominent proteins that presented the greatest changes were related to the oxidative stress response and carbohydrate metabolism, suggesting the existence of a defense mechanism in these yeasts to resist the impact of environmental contamination by heavy metal ions.
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Affiliation(s)
- Tito Sánchez-Rojas
- Laboratory of Environmental Microbiology and Biotechnology, Faculty of Biological Sciences, Universidad Nacional Mayor de San Marcos, Lima 15081, Peru
- Correspondence: (T.S.-R.); (A.E.-C.)
| | - Abraham Espinoza-Culupú
- Laboratory Research on Health Science, Universidad Señor de Sipán, Chiclayo 14001, Peru
- Correspondence: (T.S.-R.); (A.E.-C.)
| | - Pablo Ramírez
- Molecular Microbiology and Biotechnology Laboratory, Faculty of Biological Sciences, Universidad Nacional Mayor de San Marcos, Lima 15081, Peru
| | - Leo Kei Iwai
- Laboratory for Applied Toxinology Center of Toxins, Immune-Response and Cell Signaling (LETA/CeTICS), Butantan Institute, São Paulo 05503-900, Brazil
| | - Fabio Montoni
- Laboratory for Applied Toxinology Center of Toxins, Immune-Response and Cell Signaling (LETA/CeTICS), Butantan Institute, São Paulo 05503-900, Brazil
| | - Diego Macedo-Prada
- Laboratory of Environmental Microbiology and Biotechnology, Faculty of Biological Sciences, Universidad Nacional Mayor de San Marcos, Lima 15081, Peru
| | - Marcos Sulca-López
- Molecular Microbiology and Biotechnology Laboratory, Faculty of Biological Sciences, Universidad Nacional Mayor de San Marcos, Lima 15081, Peru
| | - Yerson Durán
- Laboratory of Environmental Microbiology and Biotechnology, Faculty of Biological Sciences, Universidad Nacional Mayor de San Marcos, Lima 15081, Peru
| | - Mariella Farfán-López
- Molecular Microbiology and Biotechnology Laboratory, Faculty of Biological Sciences, Universidad Nacional Mayor de San Marcos, Lima 15081, Peru
| | - Jennifer Herencia
- Molecular Microbiology and Biotechnology Laboratory, Faculty of Biological Sciences, Universidad Nacional Mayor de San Marcos, Lima 15081, Peru
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11
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Zhao L, Zhu Y, Wang M, Han Y, Xu J, Feng W, Zheng X. Enolase, a cadmium resistance related protein from hyperaccumulator plant Phytolacca americana, increase the tolerance of Escherichia coli to cadmium stress. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 25:562-571. [PMID: 35802034 DOI: 10.1080/15226514.2022.2092064] [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: 06/15/2023]
Abstract
Phytolacca americana is a Cd hyperaccumulator plant that accumulates significant amounts of Cd in leaves, making it a valuable phytoremediation plant species. Our previous research found enolase (ENO) may play an important part in P. americana to cope with Cd stress. As a multifunctional enzyme, ENO was involved not only in glycolysis but also in the response of plants to various environmental stresses. However, there are few studies on the function of PaENO (P. americana enolase) in coping with Cd stress. In this study, the PaENO gene was isolated from P. americana, and the expression level of PaENO gene significantly increased after Cd treatment. The enzymatic activity analysis showed PaENO had typical ENO activity, and the 42-position serine was essential to the enzymatic activity of PaENO. The Cd resistance assay indicated the expression of PaENO remarkably enhanced the resistance of E. coli to Cd, which was achieved by reducing the Cd content in E. coli. Moreover, both the expression of inactive PaENO and PaMBP-1 (alternative translation product of PaENO) can improve the tolerance of E. coli to Cd. The results indicated PaENO may be alternatively translated into the transcription factor PaMBP-1 to participate in the response of P. americana to Cd stress.
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Affiliation(s)
- Le Zhao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan and Education Ministry of P.R. China, Zhengzhou, China
| | - Yunhao Zhu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan and Education Ministry of P.R. China, Zhengzhou, China
| | - Min Wang
- Beijing Key Laboratory of Plant Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
| | - Yongguang Han
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
| | - Jiao Xu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
| | - Weisheng Feng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan and Education Ministry of P.R. China, Zhengzhou, China
| | - Xiaoke Zheng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan and Education Ministry of P.R. China, Zhengzhou, China
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12
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Zhang X, Zhang L, Chen L, Lu Y, An Y. Ectopic expression γ-glutamylcysteine synthetase of Vicia sativa increased cadmium tolerance in Arabidopsis. Gene 2022; 823:146358. [PMID: 35202731 DOI: 10.1016/j.gene.2022.146358] [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: 11/01/2021] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 11/25/2022]
Abstract
Glutathione (GSH) is a multifunctional essential biothiol, and its metabolism is important for plant against toxic metals and metalloids. γ-Glutamylcysteine (γ-EC), which is catalyzed by γ-Glutamylcysteine synthetase (γ-ECS), is a rate-limiting intermediate in GSH synthesis. Here, a γ-ECS gene (Vsγ-ECS) from Vicia sativa was cloned, and its function in modulating Cd tolerance was studied. Vsγ-ECS is a chloroplast localization protein, and the expression of Vsγ-ECS was upregulated by Cd stress in root of V. sativa. Heterologous expression of Vsγ-ECS (35S::Vsγ-ECS) in Arabidopsis enhanced the Cd tolerance of plants through improved primary root length, fresh weight, chlorophyll content and low degree of oxidation associated with reduced H2O2 and lipid peroxidation. However, the Cd accumulation of Arabidopsis had no effect on Vsγ-ECS overexpression. Further analysis showed that the increased Cd tolerance in 35S::Vsγ-ECS was mainly due to the capacity of increasing GSH synthesis that improved Cd chelation by GSH and phytochelatins (PCs) and alleviated the oxidative stress caused by Cd stress. In summary, a γ-ECS was characterized from V. sativa, and it demonstrated a property for increasing GSH and PC synthesis to protect plants from Cd poisoning.
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Affiliation(s)
- Xingxing Zhang
- Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou 510316, Guangdong, China
| | - Lu Zhang
- Zhejiang Provincial Key Laboratory of Bioremediation of Soil Contamination, Zhejiang Agriculture and Forestry University, Hangzhou 311300, Zhejiang, China
| | - Lijuan Chen
- Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou 510316, Guangdong, China
| | - Yinglin Lu
- Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou 510316, Guangdong, China
| | - Yuxing An
- Institute of Nanfan & Seed Industry, Guangdong Academy of Sciences, Guangzhou 510316, Guangdong, China.
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13
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Cross-Kingdom Comparative Transcriptomics Reveals Conserved Genetic Modules in Response to Cadmium Stress. mSystems 2021; 6:e0118921. [PMID: 34874779 PMCID: PMC8651089 DOI: 10.1128/msystems.01189-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
It is known that organisms have developed various mechanisms to cope with cadmium (Cd) stress, while we still lack a system-level understanding of the functional isomorphy among them. In the present study, a cross-kingdom comparison was conducted among Escherichia coli, Saccharomyces cerevisiae, and Chlamydomonas reinhardtii, through toxicological tests, comparative transcriptomics, as well as conventional functional genomics. An equivalent level of Cd stress was determined via inhibition tests. Through transcriptome comparison, the three organisms exhibited differential gene expression under the same Cd stress relative to the corresponding no-treatment control. Results from functional enrichment analysis of differentially expressed genes (DEGs) showed that four metabolic pathways responsible for combating Cd stress were commonly regulated in the three organisms, including antioxidant reactions, sulfur metabolism, cell wall remodeling, and metal transport. In vivo expression patterns of 43 DEGs from the four pathways were further examined using quantitative PCR and resulted in a relatively comparable dynamic of gene expression patterns with transcriptome sequencing (RNA-seq). Cross-kingdom comparison of typical Cd stress-responding proteins resulted in the detection of 12 groups of homologous proteins in the three species. A class of potential metal transporters were subjected to cross-transformation to test their functional complementation. An ABC transporter gene in E. coli, possibly homologous to the yeast ycf1, was heterologously expressed in S. cerevisiae, resulting in enhanced Cd tolerance. Overall, our findings indicated that conserved genetic modules against Cd toxicity were commonly regulated among distantly related microbial species, which will be helpful for utilizing them in modifying microbial traits for bioremediation. IMPORTANCE Research is establishing a systems biology view of biological response to Cd stress. It is meaningful to explore whether there is regulatory isomorphy among distantly related organisms. A transcriptomic comparison was done among model microbes, leading to the identification of a conserved cellular model pinpointing the generic strategies utilized by microbes for combating Cd stress. A novel E. coli transporter gene substantially increased yeast’s Cd tolerance. Knowledge on systems understanding of the cellular response to metals provides the basis for developing bioengineering remediation technology.
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14
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Ozturk M, Metin M, Altay V, De Filippis L, Ünal BT, Khursheed A, Gul A, Hasanuzzaman M, Nahar K, Kawano T, Caparrós PG. Molecular Biology of Cadmium Toxicity in Saccharomyces cerevisiae. Biol Trace Elem Res 2021; 199:4832-4846. [PMID: 33462792 DOI: 10.1007/s12011-021-02584-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 01/08/2021] [Indexed: 02/08/2023]
Abstract
Cadmium (Cd) is a toxic heavy metal mainly originating from industrial activities and causes environmental pollution. To better understand its toxicity and pollution remediation, we must understand the effects of Cd on living beings. Saccharomyces cerevisiae (budding yeast) is an eukaryotic unicellular model organism. It has provided much scientific knowledge about cellular and molecular biology in addition to its economic benefits. Effects associated with copper and zinc, sulfur and selenium metabolism, calcium (Ca2+) balance/signaling, and structure of phospholipids as a result of exposure to cadmium have been evaluated. In yeast as a result of cadmium stress, "mitogen-activated protein kinase," "high osmolarity glycerol," and "cell wall integrity" pathways have been reported to activate different signaling pathways. In addition, abnormalities and changes in protein structure, ribosomes, cell cycle disruption, and reactive oxygen species (ROS) following cadmium cytotoxicity have also been detailed. Moreover, the key OLE1 gene that encodes for delta-9 FA desaturase in relation to cadmium toxicity has been discussed in more detail. Keeping all these studies in mind, an attempt has been made to evaluate published cellular and molecular toxicity data related to Cd stress, and specifically published on S. cerevisiae.
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Affiliation(s)
- Munir Ozturk
- Department of Botany and Centre for Environmental Studies, Ege University, Izmir, Turkey.
| | - Mert Metin
- Graduate School of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan
| | - Volkan Altay
- Department of Biology, Faculty of Science and Arts, Hatay Mustafa Kemal University, Antakya, Hatay, Turkey
| | - Luigi De Filippis
- School of Life Sciences, University of Technology Sydney, Sydney, 123, Australia
| | - Bengu Turkyilmaz Ünal
- Faculty of Science and Arts, Department of Biotechnology, Nigde Omer Halisdemir University, Nigde, Turkey
| | - Anum Khursheed
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Alvina Gul
- Atta-ur-Rahman School of Applied Biosciences, National University of Sciences & Technology, Islamabad, Pakistan
| | - Mirza Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Kamuran Nahar
- Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Tomonori Kawano
- Graduate School of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan
| | - Pedro García Caparrós
- Agronomy Department of Superior School Engineering, University of Almería, Ctra. Sacramento s/n, La Cañadade San Urbano, 04120, Almería, Spain
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Kakeshpour T, Tamang TM, Motolai G, Fleming ZW, Park JE, Wu Q, Park S. CGFS-type glutaredoxin mutations reduce tolerance to multiple abiotic stresses in tomato. PHYSIOLOGIA PLANTARUM 2021; 173:1263-1279. [PMID: 34392538 DOI: 10.1111/ppl.13522] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 07/23/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Sessile organisms such as plants have adopted diverse reactive oxygen species (ROS) scavenging mechanisms to mitigate damage under abiotic stress conditions. Though CGFS-type glutaredoxin (GRX) genes are important regulators of ROS homeostasis, each of their functions in crop plants have not yet been well understood. We performed a targeted mutagenesis analysis of four CGFS-type GRXs (SlGRXS14, SlGRXS15, SlGRXS16, and SlGRXS17) in tomato plants (Solanum lycopersicum) using a multiplex clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 system and found that Slgrxs mutants were more sensitive to various abiotic stresses compared with the wild-type tomatoes. Slgrxs15 mutants were embryonic lethal. Single, double, and triple combinations of Slgrxs14, 16, and 17 mutants were examined under heat, chilling, drought, heavy metal toxicity, nutrient deficiency, and short photoperiod stresses. Slgrxs14 and 17 mutants showed hypersensitivity to almost all stresses while Slgrxs16 mutants were affected by chilling stress and showed milder sensitivity to other stresses. Additionally, Slgrxs14 and 17 mutants showed delayed flowering time. Our results indicate that the CGFS-type SlGRXs have specific roles against abiotic stresses, providing valuable resources to develop tomato and, possibly, other crop species that are tolerant to multiple abiotic stresses by genetic engineering.
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Affiliation(s)
- Tayebeh Kakeshpour
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, Kansas, USA
| | - Tej Man Tamang
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, Kansas, USA
| | - Gergely Motolai
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, Kansas, USA
| | - Zachary Wayne Fleming
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, Kansas, USA
| | - Jung-Eun Park
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, Kansas, USA
| | - Qingyu Wu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Sunghun Park
- Department of Horticulture and Natural Resources, Kansas State University, Manhattan, Kansas, USA
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16
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Newsome L, Falagán C. The Microbiology of Metal Mine Waste: Bioremediation Applications and Implications for Planetary Health. GEOHEALTH 2021; 5:e2020GH000380. [PMID: 34632243 PMCID: PMC8490943 DOI: 10.1029/2020gh000380] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 08/17/2021] [Accepted: 08/20/2021] [Indexed: 05/13/2023]
Abstract
Mine wastes pollute the environment with metals and metalloids in toxic concentrations, causing problems for humans and wildlife. Microorganisms colonize and inhabit mine wastes, and can influence the environmental mobility of metals through metabolic activity, biogeochemical cycling and detoxification mechanisms. In this article we review the microbiology of the metals and metalloids most commonly associated with mine wastes: arsenic, cadmium, chromium, copper, lead, mercury, nickel and zinc. We discuss the molecular mechanisms by which bacteria, archaea, and fungi interact with contaminant metals and the consequences for metal fate in the environment, focusing on long-term field studies of metal-impacted mine wastes where possible. Metal contamination can decrease the efficiency of soil functioning and essential element cycling due to the need for microbes to expend energy to maintain and repair cells. However, microbial communities are able to tolerate and adapt to metal contamination, particularly when the contaminant metals are essential elements that are subject to homeostasis or have a close biochemical analog. Stimulating the development of microbially reducing conditions, for example in constructed wetlands, is beneficial for remediating many metals associated with mine wastes. It has been shown to be effective at low pH, circumneutral and high pH conditions in the laboratory and at pilot field-scale. Further demonstration of this technology at full field-scale is required, as is more research to optimize bioremediation and to investigate combined remediation strategies. Microbial activity has the potential to mitigate the impacts of metal mine wastes, and therefore lessen the impact of this pollution on planetary health.
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Affiliation(s)
- Laura Newsome
- Camborne School of Mines and Environment and Sustainability InstituteUniversity of ExeterPenrynUK
| | - Carmen Falagán
- Camborne School of Mines and Environment and Sustainability InstituteUniversity of ExeterPenrynUK
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17
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Chen Y, Liang J, Chen Z, Wang B, Si T. Genome-Scale Screening and Combinatorial Optimization of Gene Overexpression Targets to Improve Cadmium Tolerance in Saccharomyces cerevisiae. Front Microbiol 2021; 12:662512. [PMID: 34335494 PMCID: PMC8318699 DOI: 10.3389/fmicb.2021.662512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/18/2021] [Indexed: 11/13/2022] Open
Abstract
Heavy metal contamination is an environmental issue on a global scale. Particularly, cadmium poses substantial threats to crop and human health. Saccharomyces cerevisiae is one of the model organisms to study cadmium toxicity and was recently engineered as a cadmium hyperaccumulator. Therefore, it is desirable to overcome the cadmium sensitivity of S. cerevisiae via genetic engineering for bioremediation applications. Here we performed genome-scale overexpression screening for gene targets conferring cadmium resistance in CEN.PK2-1c, an industrial S. cerevisiae strain. Seven targets were identified, including CAD1 and CUP1 that are known to improve cadmium tolerance, as well as CRS5, NRG1, PPH21, BMH1, and QCR6 that are less studied. In the wild-type strain, cadmium exposure activated gene transcription of CAD1, CRS5, CUP1, and NRG1 and repressed PPH21, as revealed by real-time quantitative PCR analyses. Furthermore, yeast strains that contained two overexpression mutations out of the seven gene targets were constructed. Synergistic improvement in cadmium tolerance was observed with episomal co-expression of CRS5 and CUP1. In the presence of 200 μM cadmium, the most resistant strain overexpressing both CAD1 and NRG1 exhibited a 3.6-fold improvement in biomass accumulation relative to wild type. This work provided a new approach to discover and optimize genetic engineering targets for increasing cadmium resistance in yeast.
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Affiliation(s)
- Yongcan Chen
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.,Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Shenzhen, China
| | - Jun Liang
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Zhicong Chen
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.,Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Shenzhen, China
| | - Bo Wang
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Tong Si
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.,Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Shenzhen, China
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18
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Srivastava A, Biswas S, Yadav S, Kumar S, Srivastava V, Mishra Y. Acute cadmium toxicity and post-stress recovery: Insights into coordinated and integrated response/recovery strategies of Anabaena sp. PCC 7120. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:124822. [PMID: 33858073 DOI: 10.1016/j.jhazmat.2020.124822] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 12/01/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
Cyanobacteria, the first photoautotrophs have remarkable adaptive capabilities against most abiotic stresses, including Cd. A model cyanobacterium, Anabaena sp. PCC 7120 has been commonly used to understand cyanobacterial plasticity under different environmental stresses. However, very few studies have focused on the acute Cd toxicity. In this context, Anabaena was subjected to 100 μM Cd for 48 h (acute Cd stress, ACdS) and then transferred into the fresh medium for post-stress recovery (PSR). We further investigated the dynamics of morpho-ultrastructure, physiology, cytosolic proteome, thylakoidal complexes, chelators, and transporters after ACdS, as well as during early (ER), mid (MR), and late (LR) phases of PSR. The findings revealed that ACdS induced intracellular Cd accumulation and ROS production, altered morpho-ultrastructure, reduced photosynthetic pigments, and affected the structural organization of PSII, which subsequently hindered photosynthetic efficiency. Anabaena responded to ACdS and recovered during PSR by reprogramming the expression pattern of proteins/genes involved in cellular defense and repair; CO2 access, Calvin-Benson cycle, glycolysis, and pentose phosphate pathway; protein biosynthesis, folding, and degradation; regulatory functions; PSI-based cyclic electron flow; Cd chelation; and efflux. These modulations occurred in an integrated and coordinated manner that facilitated Anabaena to detoxify Cd and repair ACdS-induced cellular damage.
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Affiliation(s)
- Akanksha Srivastava
- Department of Botany, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Subhankar Biswas
- Department of Botany, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Sandhya Yadav
- Department of Botany, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Sanjiv Kumar
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology (KTH), AlbaNova University Centre, Stockholm 10691, Sweden
| | - Vaibhav Srivastava
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology (KTH), AlbaNova University Centre, Stockholm 10691, Sweden
| | - Yogesh Mishra
- Department of Botany, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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19
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Jin W, Li Z, Ran F, Huang S, Huo K, Li J, Han Q, Wang G, Wang Z, Jian S, Li K, Li C. Transcriptome analysis provides insights into copper toxicology in piebald naked carp (Gymnocypris eckloni). BMC Genomics 2021; 22:416. [PMID: 34090338 PMCID: PMC8178853 DOI: 10.1186/s12864-021-07673-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 05/05/2021] [Indexed: 01/11/2023] Open
Abstract
Background Copper was used for many years in aquaculture operations as an effective algaecide or a parasite treatment of fish. It is an essential nutrient with numerous functions in organisms, but is toxic at high concentrations. However, the toxicity of copper to fish remains unclear. In this study, we used the piebald naked carp, Gymnocypris eckloni, as a model. RNA-seq data from different tissues, including gills, kidney, and liver, were used to investigate the underlying mechanism of copper toxicology in G. eckloni. Results We compared the transcriptomes from different tissues with different time durations of copper ion treatment. After 72 h copper ion treatment, the number of genes with different expression in gills and liver changed dramatically, but not in kidneys. In KEGG functional enrichment, the pattern of differentially expressed genes (DEGs) was also similar in the gills and liver. The most enriched pathway of DEGs was “Ribosome” in both tissues. Furthermore, we analyzed the expression levels of genes involved in oxidative stress response and protein synthesis using qPCR and RNA-seq data. Our results showed that several genes involved in oxidative stress response were up-regulated both in gills and liver. Up-regulation of these genes indicated that copper treatment caused oxidative stress, which is likely to result in ribosome damage. In addition, our results showed that the expression of Eef1b2, a transcription elongation factor, was decreased in the liver under oxidative stress, and the expression of translation initiation factors Eif4ebp1 and eIF2α, and elongation factor eEF2 was up-regulated. These results supported the idea that oxidative stress inhibits protein synthesis in cells. Conclusions Our results indicate that copper exposure caused different responses in different tissues, since the gene expression patterns changed substantially either in the gills or liver, while the effect on the kidney was relatively weak. Furthermore, our results indicated that the expression pattern of the genes involved in the ribosome, which is a complex molecular machine orchestrating protein synthesis in the cell, together with translation initiation factor and elongation factors, were affected by copper exposure both in the gills and liver of piebald naked carp. This result leads us to speculate that the downregulation of global protein synthesis is an acute response strategy of fish to metal-induced oxidative stress. Moreover, we speculate that this strategy not only exists in the selective translation of proteins but also exists in the specific translation of functional proteins in tissues and cells. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07673-4.
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Affiliation(s)
- Wenjie Jin
- College of Eco-Environmental Engineering, Qinghai University, Xining, 810016, China.,State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, No. 521 Ningda Road, Chengbei District, Xining, 810016, China
| | - Zixuan Li
- College of Eco-Environmental Engineering, Qinghai University, Xining, 810016, China
| | - Fengxia Ran
- College of Eco-Environmental Engineering, Qinghai University, Xining, 810016, China
| | - Shen Huang
- College of Eco-Environmental Engineering, Qinghai University, Xining, 810016, China
| | - Kefan Huo
- College of Eco-Environmental Engineering, Qinghai University, Xining, 810016, China
| | - Jianjuan Li
- College of Eco-Environmental Engineering, Qinghai University, Xining, 810016, China
| | - Qingshuo Han
- College of Eco-Environmental Engineering, Qinghai University, Xining, 810016, China
| | - Guojie Wang
- Fisheries Environmental Monitoring Station, Xining, 810016, China
| | - Zhenji Wang
- Fisheries Environmental Monitoring Station, Xining, 810016, China
| | - Shenlong Jian
- Fisheries Environmental Monitoring Station, Xining, 810016, China
| | - Kemao Li
- Fisheries Environmental Monitoring Station, Xining, 810016, China
| | - Changzhong Li
- College of Eco-Environmental Engineering, Qinghai University, Xining, 810016, China. .,State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, No. 521 Ningda Road, Chengbei District, Xining, 810016, China.
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20
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Ma N, Sun C. Cadmium sulfide nanoparticle biomineralization and biofilm formation mediate cadmium resistance of the deep-sea bacterium Pseudoalteromonas sp. MT33b. ENVIRONMENTAL MICROBIOLOGY REPORTS 2021; 13:325-336. [PMID: 33511774 DOI: 10.1111/1758-2229.12933] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/21/2021] [Accepted: 01/24/2021] [Indexed: 06/12/2023]
Abstract
Cadmium (Cd) is a common toxic heavy metal in the environment, and bacteria have evolved different strategies to deal with Cd toxicity. Here, a bacterium designated Pseudoalteromonas sp. MT33b possessing strong Cd resistance was isolated from the Mariana Trench sediments. Supplement of cysteine significantly increased bacterial Cd resistance and removal rate. Biofilm formation was demonstrated to play a positive role toward bacterial Cd resistance. Transcriptome analysis showed the supplement of cysteine effectively prevented Cd2+ from entering bacterial cells, promoted saccharide metabolism and thereby facilitating energy production, which consists well with bacterial growth trend analysed under the same conditions. Notably, the expressions of many biofilm formation related genes including flagellar assembly, signal transduction, bacterial secretion and TonB-dependent transfer system were significantly upregulated when facing Cd stress, indicating their important roles in determining bacterial biofilm formation and enhancing Cd resistance. Overall, this study indicates the formation of insoluble CdS precipitates and massive biofilm is the major strategy adopted by Pseudoalteromonas sp. MT33b to eliminate Cd stress. Our results provide a good model to investigate how heavy metals impact biofilm formation in the deep-sea ecosystems, which may facilitate a deeper understanding of microbial environmental adaptability and better utilization of these microbes for bioremediation purposes in the future.
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Affiliation(s)
- Ning Ma
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
- College of Earth Science, University of Chinese Academy of Sciences, Beijing, 100049, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Chaomin Sun
- CAS Key Laboratory of Experimental Marine Biology & Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
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21
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Radyuk SN. Mechanisms Underlying the Biological Effects of Molecular Hydrogen. Curr Pharm Des 2021; 27:626-735. [PMID: 33308112 DOI: 10.2174/1381612826666201211112846] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 10/19/2020] [Indexed: 11/22/2022]
Abstract
Aberrant redox-sensitive reactions and accumulation of oxidative damage can impair body functions and contribute to the development of various pathologies and aging. Although antioxidant substances have long been recognized as a measure of alleviating oxidative stress and restoring redox balance, the arsenal of effective means of preventing the development of various disorders, is still limited. There is an emerging field that utilizes molecular hydrogen (H2) as a scavenger of free radicals and reactive oxygen species (ROS). Among the remarkable characteristics of H2 is its ability to counteract the harmful effects of hydroxyl radical and peroxynitrite without affecting the activity of functionally important ROS, such as hydrogen peroxide and nitric oxide. The beneficial effects of H2 have been documented in numerous clinical studies and studies on animal models and cell cultures. However, the established scavenging activity of H2 can only partially explain its beneficial effects because the effects are achieved at very low concentrations of H2. Given the rate of H2 diffusion, such low concentrations may not be sufficient to scavenge continuously generated ROS. H2 can also act as a signaling molecule and induce defense responses. However, the exact targets and mechanism(s) by which H2 exerts these effects are unknown. Here, we analyzed both positive and negative effects of the endogenous H2, identified the redox-sensitive components of the pathways affected by molecular hydrogen, and also discussed the potential role of molecular hydrogen in regulating cellular redox.
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Affiliation(s)
- Svetlana N Radyuk
- Department of Biological Sciences, Southern Methodist University, 6501 Airline Rd., Dallas, Texas, United States
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22
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Navrátilová A, Kovár M, Požgajová M. Ascorbic acid mitigates cadmium-induced stress, and contributes to ionome stabilization in fission yeast. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:15380-15393. [PMID: 33236313 DOI: 10.1007/s11356-020-11480-x] [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: 05/18/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
Cadmium is a highly toxic environmental pollutant which through enhancement of reactive oxygen species (ROS) production triggers oxidative stress to the cell. Cell growth, a fundamental feature of all living organisms is closely connected to the cell shape and homeostasis. As these processes largely depend on cell fitness status and environmental conditions we have analyzed, the impact of different cadmium concentrations and the effect of ascorbic acid (ascorbate, AsA) supplementation on cell growth parameters, cell morphology, and ionome balance maintenance in Schizosaccharomyces pombe. We show that cadmium causes membrane lipid peroxidation resulting in cell shape alterations leading to growth impairment and through mineral elements disequilibrium affects ionome homeostasis in a dose- and time-dependent manner. AsA recognized as one of the most prominent antioxidants, when overdosed, displays considerable pro-oxidant activity, though precise dosing of its supplementation is desired. We present here that AsA under efficacious concentration largely improves cell condition affected by cadmium. Although, we clearly demonstrate the beneficial feature of AsA, further studies are required to fully understand its protective nature on cell homeostasis maintenance under conditions of the broken environment.
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Affiliation(s)
- Alica Navrátilová
- Department of Genetics and Breeding Biology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76, Nitra, Slovakia
| | - Marek Kovár
- Department of Plant Physiology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76, Nitra, Slovakia
| | - Miroslava Požgajová
- AgroBioTech Research Centre, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76, Nitra, Slovakia.
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23
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Huang L, Fang Z, Gao J, Wang J, Li Y, Sun L, Wang Y, Liao J, Gooneratne R. Protective role of l-threonine against cadmium toxicity in Saccharomyces cerevisiae. J Basic Microbiol 2021; 61:339-350. [PMID: 33570201 DOI: 10.1002/jobm.202100012] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 01/28/2021] [Accepted: 02/02/2021] [Indexed: 12/11/2022]
Abstract
Environment and food contamination with cadmium (Cd) can cause serious toxicity, posing a severe threat to agricultural production and human health. However, how amino acids contribute to defenses against oxidative stress caused by Cd in cells is not fully understood. As a model eukaryote with a relatively clear genetic background, Saccharomyces cerevisiae has been commonly used in Cd toxicity research. To gain insight into Cd toxicity and cell defenses against it, 20 amino acids were screened for protective roles against Cd stress in S. cerevisiae. The results showed that threonine (Thr, T) had the strongest protective effect against Cd-induced mortality and membrane damage in the cells. Compared to the antioxidant vitamin C (VC), Thr exhibited a higher efficacy in restoring the superoxide dismutase (SOD) activity that was inhibited by Cd but not by H2 O2 in vivo. Thr exhibited evident DPPH (2,2-diphenyl-1-picrylhydrazyl) activity but weak ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-9 sulfonic acid)) scavenging activity, giving it a weaker effect against Cd-induced lipid peroxidation and superoxide radical O2- , compared to VC. More importantly, compared to the chelating agent EDTA, Thr showed stronger chelation of Cd, giving it a stronger protective effect on SOD against Cd than VC in vitro. The results of the in vivo and in vitro experiments revealed that the role Thr plays in cell defenses against Cd may be attributed to its protection of the SOD enzyme, predominantly through the preferential chelation of Cd. Our results provide insights into the protective mechanisms of amino acid Thr that ameliorate Cd toxicity and suggest that a supplement of Thr might help to reduce Cd-induced oxidative damage.
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Affiliation(s)
- Linru Huang
- College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology, Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Cunjin College, Guangdong Ocean University, Zhanjiang, China
| | - Zhijia Fang
- College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology, Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Cunjin College, Guangdong Ocean University, Zhanjiang, China
| | - Jian Gao
- College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology, Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Cunjin College, Guangdong Ocean University, Zhanjiang, China
| | - Jingwen Wang
- College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology, Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Cunjin College, Guangdong Ocean University, Zhanjiang, China
| | - Yongbin Li
- College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology, Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Cunjin College, Guangdong Ocean University, Zhanjiang, China
| | - Lijun Sun
- College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology, Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Cunjin College, Guangdong Ocean University, Zhanjiang, China
| | - Yaling Wang
- College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology, Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Cunjin College, Guangdong Ocean University, Zhanjiang, China
| | - Jianmeng Liao
- Institute for Food and Drug Control, Zhanjiang, China
| | - Ravi Gooneratne
- Department of Wine, Food, and Molecular Biosciences, Lincoln University, Lincoln, Canterbury, New Zealand
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24
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Ma N, Sha Z, Sun C. Formation of cadmium sulfide nanoparticles mediates cadmium resistance and light utilization of the deep-sea bacterium Idiomarina sp. OT37-5b. Environ Microbiol 2020; 23:934-948. [PMID: 32815245 DOI: 10.1111/1462-2920.15205] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 08/16/2020] [Indexed: 01/10/2023]
Abstract
Heavy metal is one of the major factors threatening the survival of microorganisms. Here, a deep-sea bacterium designated Idiomarina sp. OT37-5b possessing strong cadmium (Cd) tolerance was isolated from a typical hydrothermal vent. Both the Cd-resistance and removal efficiency of Idiomarina sp. OT37-5b were significantly promoted by the supplement of cysteine and meanwhile large amount of CdS nanoparticles were observed. Production of H2 S from cysteine catalysed by methionine gamma-lyase was further demonstrated to contribute to the formation of CdS nanoparticles. Proteomic results showed the addition of cysteine effectively enhanced the efflux of Cd, improved the activities of reactive oxygen species scavenging enzymes, and thereby boosted the nitrogen reduction and energy production of Idiomarina sp. OT37-5b. Notably, the existence of CdS nanoparticles obviously promoted the growth of Idiomarina sp. OT37-5b when exposed to light, indicating this bacterium might grab light energy through CdS nanoparticles. Proteomic analysis revealed the expression levels of essential components for light utilization including electron transport, cytochrome complex and F-type ATPase were significantly up-regulated, which strongly suggested the formation of CdS nanoparticles promoted light utilization and energy production. Our results provide a good model to investigate the uncovered mechanisms of self-photosensitization of nonphotosynthetic bacteria for light-to-chemical production in the deep biosphere.
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Affiliation(s)
- Ning Ma
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.,College of Earth Science, University of Chinese Academy of Sciences, Beijing, 100049, China.,Centre of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Zhongli Sha
- Centre of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.,Laboratory of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.,Centre for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Chaomin Sun
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.,Centre of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.,Centre for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
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25
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Rajakumar S, Abhishek A, Selvam GS, Nachiappan V. Effect of cadmium on essential metals and their impact on lipid metabolism in Saccharomyces cerevisiae. Cell Stress Chaperones 2020; 25:19-33. [PMID: 31823289 PMCID: PMC6985397 DOI: 10.1007/s12192-019-01058-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 11/14/2019] [Accepted: 11/28/2019] [Indexed: 01/09/2023] Open
Abstract
Cadmium (Cd) is a toxic heavy metal that induces irregularity in numerous lipid metabolic pathways. Saccharomyces cerevisiae, a model to study lipid metabolism, has been used to establish the molecular basis of cellular responses to Cd toxicity in relation to essential minerals and lipid homeostasis. Multiple pathways sense these environmental stresses and trigger the mineral imbalances specifically calcium (Ca) and zinc (Zn). This review is aimed to elucidate the role of Cd toxicity in yeast, in three different perspectives: (1) elucidate stress response and its adaptation to Cd, (2) understand the physiological role of a macromolecule such as lipids, and (3) study the stress rescue mechanism. Here, we explored the impact of Cd interference on the essential minerals such as Zn and Ca and their influence on endoplasmic reticulum stress and lipid metabolism. Cd toxicity contributes to lipid droplet synthesis by activating OLE1 that is essential to alleviate lipotoxicity. In this review, we expanded our current findings about the effect of Cd on lipid metabolism of budding yeast.
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Affiliation(s)
- Selvaraj Rajakumar
- Eukaryotic Biology Lab, Department of Biochemistry, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, 625021, India.
- Biomembrane Lab, Department of Biochemistry, Centre for Excellence in Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620024, India.
- Department of Pediatrics, Heritage Medical Research Centre, University of Alberta, Edmonton, Alberta, T6G 2S2, Canada.
| | - Albert Abhishek
- Eukaryotic Biology Lab, Department of Biochemistry, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, 625021, India
| | - Govindan Sadasivam Selvam
- Eukaryotic Biology Lab, Department of Biochemistry, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, 625021, India
| | - Vasanthi Nachiappan
- Biomembrane Lab, Department of Biochemistry, Centre for Excellence in Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620024, India
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26
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Oshiquiri LH, Dos Santos KRA, Ferreira Junior SA, Steindorff AS, Barbosa Filho JR, Mota TM, Ulhoa CJ, Georg RC. Trichoderma harzianum transcriptome in response to cadmium exposure. Fungal Genet Biol 2019; 134:103281. [PMID: 31626987 DOI: 10.1016/j.fgb.2019.103281] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 10/11/2019] [Accepted: 10/14/2019] [Indexed: 11/18/2022]
Abstract
Cadmium (Cd) is a heavy metal present in the environment mainly as a result of industrial contamination that can cause toxic effects to life. Some microorganisms, as Trichoderma harzianum, a fungus used in biocontrol, are able to survive in polluted environments and act as bioremediators. Aspects about the tolerance to the metal have been widely studied in other fungi although there are a few reports about the response of T. harzianum. In this study, we determined the effects of cadmium over growth of T. harzianum and used RNA-Seq to identify significant genes and processes regulated in the metal presence. Cadmium inhibited the fungus growth proportionally to its concentration although the fungus exhibited tolerance as it continued to grow, even in the highest concentrations used. A total of 3767 (1993 up and 1774 down) and 2986 (1606 up and 1380 down) differentially expressed genes were detected in the mycelium of T. harzianum cultivated in the presence of 1.0 mg mL-1 or 2.0 mg mL-1 of CdCl2, respectively, compared to the absence of the metal. Of these, 2562 were common to both treatments. Biological processes related to cellular homeostasis, transcription initiation, sulfur compound biosynthetic and metabolic processes, RNA processing, protein modification and vesicle-mediated transport were up-regulated. Carbohydrate metabolic processes were down-regulated. Pathway enrichment analysis indicated induction of glutathione and its precursor's metabolism. Interestingly, it also indicated an intense transcriptional induction, especially by up-regulation of spliceosome components. Carbohydrate metabolism was repressed, especially the mycoparasitism-related genes, suggesting that the mycoparasitic ability of T. harzianum could be affected during cadmium exposure. These results contribute to the advance of the current knowledge about the response of T. harzianum to cadmium exposure and provide significant targets for biotechnological improvement of this fungus as a bioremediator and a biocontrol agent.
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Affiliation(s)
- Letícia Harumi Oshiquiri
- Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás CEP:74690-900, Brazil
| | | | | | - Andrei Stecca Steindorff
- U.S. Department of Energy (DOE) Joint Genome Institute, 2800 Mitchell Drive, Walnut Creek, CA 94598, USA
| | | | - Thuana Marcolino Mota
- Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás CEP:74690-900, Brazil
| | - Cirano José Ulhoa
- Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás CEP:74690-900, Brazil
| | - Raphaela Castro Georg
- Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás CEP:74690-900, Brazil.
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27
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Cai M, Wang Z, Ni X, Hou Y, Peng Q, Gao X, Liu X. Insights from the proteome profile of Phytophthora capsici in response to the novel fungicide SYP-14288. PeerJ 2019; 7:e7626. [PMID: 31523524 PMCID: PMC6716503 DOI: 10.7717/peerj.7626] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 08/06/2019] [Indexed: 11/20/2022] Open
Abstract
Phytophthora capsica is a destructive oomycete plant pathogen that causes huge losses to crop production worldwide. However, the novel fungicide SYP-14288 has shown excellent activity against various stages of the oomycete life cycle as well against fungal plant pathogens. The current study utilized isobaric tags for relative and absolute quantitation technology to generate proteome profiles of P. capsici in the presence or absence of SYP-14288 in order to gain a greater understanding of the SYP-14288 mode of action. A total of 1,443 individual proteins were identified during the investigation, of which 599 were considered to have significantly altered expression. Further investigation using Cluster of Orthologous Groups of proteins analysis and Kyoto Encyclopedia of Genes and Genomes pathway analysis indicated most of the proteins with altered expression were associated with carbohydrate metabolism, energy metabolism and their downstream biological functions, especially with regard to oxidoreductase activity and subsequent adenosine triphosphate (ATP) production associated pathways. Quantitative expression analysis using qRT-PCR validated the proteomic data. These results seem to indicate that SYP-14288 treatment caused a shift in energy metabolism that resulted in the activation of compensatory mechanisms affecting carbohydrate and lipid metabolism. The study also found evidence that the up-regulation of transmembrane transporters and proteins associated with stress response might also be coopted to compensate for the disrupted proton gradient and other downstream effects. Taken together these results provide strong evidence that SYP-14288 has a similar mode of action to the oxidative phosphorylation uncoupler Fluazinam but further investigation, including molecular studies, is required to completely characterize the SYP-14288 mode of action in P. capsici. However, the proteomic data collected in the current study does provide important insight into the overall effect of SYP-14288 in P. capsici, which could be useful for the registration and application of this novel fungicide.
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Affiliation(s)
- Meng Cai
- College of Chemistry, Central China Normal University, Wuhan, China
| | - Zhiwen Wang
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Xiaoxia Ni
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Yanhua Hou
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Qin Peng
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Xiang Gao
- Department of Plant Pathology, China Agricultural University, Beijing, China
| | - Xili Liu
- Department of Plant Pathology, China Agricultural University, Beijing, China
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28
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Zhai Q, Xiao Y, Narbad A, Chen W. Comparative metabolomic analysis reveals global cadmium stress response of Lactobacillus plantarum strains. Metallomics 2019; 10:1065-1077. [PMID: 29998247 DOI: 10.1039/c8mt00095f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Our previous work demonstrated the protective effects of Lactobacillus plantarum (L. plantarum) strains against cadmium (Cd) toxicity in vivo, and also indicated that the Cd tolerance of the strains played an important role in this protection. The goal of this study was to investigate the Cd resistance mechanism of L. plantarum by liquid chromatography-mass spectrometry (LC-MS) based metabolomic analysis, with a focus on the global Cd stress response. L. plantarum CCFM8610 (strongly resistant to Cd) and L. plantarum CCFM191 (sensitive to Cd) were selected as target strains, and their metabolomic profiles with and without Cd exposure were compared. The underlying mechanisms of the intra-species distinction between CCFM8610 and CCFM191 in terms of Cd tolerance can be attributed to the following aspects: (a) CCFM8610 possesses a higher intracellular content of osmolytes; (b) CCFM8610 can induce more effective biosynthesis of extracellular polymeric substance (EPS) to sequestrate Cd;
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Affiliation(s)
- Qixiao Zhai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
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29
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Ramos-Zúñiga J, Gallardo S, Martínez-Bussenius C, Norambuena R, Navarro CA, Paradela A, Jerez CA. Response of the biomining Acidithiobacillus ferrooxidans to high cadmium concentrations. J Proteomics 2019; 198:132-144. [DOI: 10.1016/j.jprot.2018.12.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/11/2018] [Accepted: 12/12/2018] [Indexed: 11/28/2022]
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30
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Li C, Xu Y, Li L, Yang X, Wang Y. Acid stress induces cross-protection for cadmium tolerance of multi-stress-tolerant Pichia kudriavzevii by regulating cadmium transport and antioxidant defense system. JOURNAL OF HAZARDOUS MATERIALS 2019; 366:151-159. [PMID: 30513442 DOI: 10.1016/j.jhazmat.2018.11.101] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/27/2018] [Accepted: 11/26/2018] [Indexed: 06/09/2023]
Abstract
The toxicity of cadmium (Cd) is the major limitation to its removal using microorganisms. The Cd tolerance of Pichia kudriavzevii was obviously enhanced by acid stress based on multi-stress cross-protection. RNA-Seq showed that most differentially expressed genes (DEGs) in the Pentose phosphate pathway, Citrate cycle (TCA cycle), Glycolysis/Gluconeogenesis, Peroxisome and Glutathione metabolism were up-regulated by acid stress. The up-regulated expression of genes related to ATP synthesis (GOR1, ALD5, ADH4, ADH6, MDH2, IDH1, IDH2, and ATP19) and Cd transport (GSTY2, GTO2, GLO2, and YOR1), and the improvement of intracellular GSH level and GST activity, reduced the Cd toxicity towards P. kudriavzevii. Cd efflux by YOR1 played a key role in the decline of intracellular Cd level. Acid stress obviously improved the gene expression levels and activities of antioxidant enzymes (SOD, POD, and CAT), which inhibited the Cd-induced ROS outburst and oxidative damage of proteins and membrane lipids. In addition, the enhanced expression of HSP12 protected P. kudriavzevii from the damage of Cd stress. These results provide some important clues to reconstruct robust strains using for Cd removal in aquatic environments.
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Affiliation(s)
- Chunsheng Li
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Ying Xu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
| | - Laihao Li
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
| | - Xianqing Yang
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
| | - Yueqi Wang
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
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31
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Ruas FAD, Barboza NR, Castro-Borges W, Guerra-Sá R. Manganese alters expression of proteins involved in the oxidative stress of Meyerozyma guilliermondii. J Proteomics 2019; 196:173-188. [DOI: 10.1016/j.jprot.2018.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 10/25/2018] [Accepted: 11/01/2018] [Indexed: 01/12/2023]
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32
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Qiu L, Feng J, Dai Y, Chang S. Mechanisms of strontium's adsorption by Saccharomyces cerevisiae: Contribution of surface and intracellular uptakes. CHEMOSPHERE 2019; 215:15-24. [PMID: 30300807 DOI: 10.1016/j.chemosphere.2018.09.168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 09/17/2018] [Accepted: 09/28/2018] [Indexed: 06/08/2023]
Abstract
The objective of this work was to explore the mechanisms participating in strontium sorption by living Saccharomyces cerevisiae (S. cerevisiae). The location of strontium adsorbed by S. cerevisiae was studied by our plasmolysis treatment. The contribution of physical and chemical mechanisms was determined quantitatively by desorption and blockage of functional groups. Moreover, our results indicated that bioaccumulation also played a major role in biosorption by living cells. Thus, supplementary methods including 2-DE (two-dimensional electrophoresis) and Matrix-Assisted Laser Desorption/Ionization Tandem Time of Flight Mass Spectrometry (MALDI-TOF-TOF) were employed to analyze the different proteins. The subsequent desorption % of Sr2+ by Distilled Water (DW), NH4NO3 and EDTA-Na2 from Sr2+ loaded sorbents indicated a minor role for physical adsorption, while ion exchange and complexation were responsible for approximately 20% and 40%. Specific blockage of functional groups revealed that carboxyl and amine groups played an important role in Sr2+ binding to the living S. cerevisiae. From our MALDI-TOF-TOF results, we concluded that 38 proteins showed up-regulated expression profiles and 11 proteins showed down-regulated after biosorption. Moreover, proteins belong to: phagocytic function (Act1p); ion channel (S-adenosylmethionine synthase); glycolysis (Tubulin) may directly involve in strontium bioaccumulation. In conclusion, the present work indicates that the strontium sorption mechanism by living S. cerevisiae is complicated including ion-exchange along with complexation as the main mechanism, whereas the other mechanisms such as physical adsorption play a minor contribution. Metabolically-dependent proteins may play an important role in bioaccumulation.
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Affiliation(s)
- Liang Qiu
- Department of Materials Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, PR China
| | - Jundong Feng
- Department of Materials Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, PR China.
| | - Yaodong Dai
- Department of Materials Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, PR China
| | - Shuquan Chang
- Department of Materials Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, PR China
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33
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Cadmium induced glutathione bioaccumulation mediated by γ-glutamylcysteine synthetase in ectomycorrhizal fungus Hebeloma cylindrosporum. Biometals 2018; 32:101-110. [DOI: 10.1007/s10534-018-00164-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 12/03/2018] [Indexed: 01/18/2023]
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Zhao WJ, Zhang ZJ, Zhu ZY, Song Q, Zheng WJ, Hu X, Mao L, Lian HZ. Time-dependent response of A549 cells upon exposure to cadmium. J Appl Toxicol 2018; 38:1437-1446. [PMID: 30051583 DOI: 10.1002/jat.3665] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 06/08/2018] [Accepted: 06/08/2018] [Indexed: 01/15/2023]
Abstract
Cadmium is considered one of the most harmful carcinogenic heavy metals in the human body. Although many scientists have performed research on cadmium toxicity mechanism, the toxicokinetic process of cadmium toxicity remains unclear. In the present study, the kinetic response of proteome in/and A549 cells to exposure of exogenous cadmium was profiled. A549 cells were treated with cadmium sulfate (CdSO4 ) for different periods and expressions of proteins in cells were detected by two-dimensional gel electrophoresis. The kinetic expressions of proteins related to cadmium toxicity were further investigated by reverse transcription-polymerase chain reaction and western blotting. Intracellular cadmium accumulation and content fluctuation of several essential metals were observed after 0-24 hours of exposure by inductively coupled plasma mass spectrometry. Fifty-four protein spots showed significantly differential responses to CdSO4 exposure at both 4.5 and 24 hours. From these proteins, four expression patterns were concluded. Their expressions always exhibited a maximum abundance ratio after CdSO4 exposure for 24 hours. The expression of metallothionein-1 and ZIP-8, concentration of total protein, and contents of cadmium, zinc, copper, cobalt and manganese in cells also showed regular change. In synthesis, the replacement of the essential metals, the inhibition of the expression of metal storing protein and the activation of metal efflux system are involved in cadmium toxicity.
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Affiliation(s)
- Wen-Jie Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of E-Waste Recycling, College of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou, China
| | - Zi-Jin Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, China
| | - Zhen-Yu Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Qun Song
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, China
| | - Wei-Juan Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Xin Hu
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, China
| | - Li Mao
- Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Hong-Zhen Lian
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, China
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35
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Komárek J, Ivanov Kavková E, Houser J, Horáčková A, Ždánská J, Demo G, Wimmerová M. Structure and properties of AB21, a novelAgaricus bisporusprotein with structural relation to bacterial pore-forming toxins. Proteins 2018; 86:897-911. [DOI: 10.1002/prot.25522] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 04/23/2018] [Accepted: 04/26/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Jan Komárek
- Central European Institute of Technology, Masaryk University, Kamenice 5; Brno 62500 Czech Republic
- National Centre for Biomolecular Research; Faculty of Science, Masaryk University, Kotlarska 2; Brno 61137 Czech Republic
| | - Eva Ivanov Kavková
- Department of Biochemistry; Faculty of Science, Masaryk University, Kotlarska 2; Brno 61137 Czech Republic
| | - Josef Houser
- Central European Institute of Technology, Masaryk University, Kamenice 5; Brno 62500 Czech Republic
- National Centre for Biomolecular Research; Faculty of Science, Masaryk University, Kotlarska 2; Brno 61137 Czech Republic
| | - Aneta Horáčková
- Department of Biochemistry; Faculty of Science, Masaryk University, Kotlarska 2; Brno 61137 Czech Republic
| | - Jitka Ždánská
- Central European Institute of Technology, Masaryk University, Kamenice 5; Brno 62500 Czech Republic
| | - Gabriel Demo
- Central European Institute of Technology, Masaryk University, Kamenice 5; Brno 62500 Czech Republic
- National Centre for Biomolecular Research; Faculty of Science, Masaryk University, Kotlarska 2; Brno 61137 Czech Republic
| | - Michaela Wimmerová
- Central European Institute of Technology, Masaryk University, Kamenice 5; Brno 62500 Czech Republic
- National Centre for Biomolecular Research; Faculty of Science, Masaryk University, Kotlarska 2; Brno 61137 Czech Republic
- Department of Biochemistry; Faculty of Science, Masaryk University, Kotlarska 2; Brno 61137 Czech Republic
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Sun Z, Song J, Xin X, Xie X, Zhao B. Arbuscular Mycorrhizal Fungal 14-3-3 Proteins Are Involved in Arbuscule Formation and Responses to Abiotic Stresses During AM Symbiosis. Front Microbiol 2018; 9:91. [PMID: 29556216 PMCID: PMC5844941 DOI: 10.3389/fmicb.2018.00091] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 01/16/2018] [Indexed: 12/19/2022] Open
Abstract
Arbuscular mycorrhizal (AM) fungi are soil-borne fungi belonging to the ancient phylum Glomeromycota and are important symbionts of the arbuscular mycorrhiza, enhancing plant nutrient acquisition and resistance to various abiotic stresses. In contrast to their significant physiological implications, the molecular basis involved is poorly understood, largely due to their obligate biotrophism and complicated genetics. Here, we identify and characterize three genes termed Fm201, Ri14-3-3 and RiBMH2 that encode 14-3-3-like proteins in the AM fungi Funneliformis mosseae and Rhizophagus irregularis, respectively. The transcriptional levels of Fm201, Ri14-3-3 and RiBMH2 are strongly induced in the pre-symbiotic and symbiotic phases, including germinating spores, intraradical hyphae- and arbuscules-enriched roots. To functionally characterize the Fm201, Ri14-3-3 and RiBMH2 genes, we took advantage of a yeast heterologous system owing to the lack of AM fungal transformation systems. Our data suggest that all three genes can restore the lethal Saccharomyces cerevisiae bmh1 bmh2 double mutant on galactose-containing media. Importantly, yeast one-hybrid analysis suggests that the transcription factor RiMsn2 is able to recognize the STRE (CCCCT/AGGGG) element present in the promoter region of Fm201 gene. More importantly, Host-Induced Gene Silencing of both Ri14-3-3 and RiBMH2 in Rhizophagus irregularis impairs the arbuscule formation in AM symbiosis and inhibits the expression of symbiotic PT4 and MST2 genes from plant and fungal partners, respectively. We further subjected the AM fungus-Medicago truncatula association system to drought or salinity stress. Accordingly, the expression profiles in both mycorrhizal roots and extraradical hyphae reveal that these three 14-3-3-like genes are involved in response to drought or salinity stress. Collectively, our results provide new insights into molecular functions of the AM fungal 14-3-3 proteins in abiotic stress responses and arbuscule formation during AM symbiosis.
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Affiliation(s)
- Zhongfeng Sun
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jiabin Song
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xi'an Xin
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xianan Xie
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Bin Zhao
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
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Gombeau K, de Oliveira RB, Sarrazin SLF, Mourão RHV, Bourdineaud JP. Protective Effects of Plathymenia reticulata and Connarus favosus Aqueous Extracts against Cadmium- and Mercury-Induced Toxicities. Toxicol Res 2018; 35:25-35. [PMID: 30766655 PMCID: PMC6354948 DOI: 10.5487/tr.2019.35.1.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/21/2018] [Accepted: 07/20/2018] [Indexed: 12/11/2022] Open
Abstract
The extracts of Plathymenia reticulata and Connarus favosus are widely used in the folk medicine. The potential protective effects of these extracts have been evaluated against cadmium in the yeast Saccharomyces cerevisiae, and against mercurial contamination in zebrafish Danio rerio. In yeast, both extracts efficiently protected the Δycf1 mutant strain exposed to cadmium chloride restoring the growth, the expression of stress-response genes and decreasing the level of oxidative stress. In zebrafish, the supplementation of methylmercury-contaminated diet with both plant extracts similarly protected fish through the suppression of the methylmercury-induced lipid peroxidation, decrease of acetylcholinesterase activity, and restoring the expression levels of stress-response genes. This study particularly demonstrates the protective potential of both aqueous extracts against methylmercury, and could represent an interesting alternative for the Amazonian fish-eating communities to cope with the impact of chronic exposure to contaminated diets.
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Affiliation(s)
- Kewin Gombeau
- University of Bordeaux, CNRS, UMR 5805, EPOC, Arcachon Marine Station, 33120 Arcachon, France
| | - Ricardo Bezerra de Oliveira
- Federal University of Western Pará - UFOPA, PPGRNA, LABBEX, Tapajós Campus, Rua Vera Paz s/n, Bairro Salé, CEP, 68040-050, Caranazal, 88040-060 Santarém, Pará, Brazil
| | - Sandra Layse Ferreira Sarrazin
- Federal University of Western Pará - UFOPA, PPGRNA, LABBEX, Tapajós Campus, Rua Vera Paz s/n, Bairro Salé, CEP, 68040-050, Caranazal, 88040-060 Santarém, Pará, Brazil
| | - Rosa Helena Veras Mourão
- Federal University of Western Pará - UFOPA, PPGRNA, LABBEX, Tapajós Campus, Rua Vera Paz s/n, Bairro Salé, CEP, 68040-050, Caranazal, 88040-060 Santarém, Pará, Brazil
| | - Jean-Paul Bourdineaud
- University of Bordeaux, CNRS, UMR 5805, EPOC, Arcachon Marine Station, 33120 Arcachon, France
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Yang CE, Chu IM, Wei YH, Tsai SL. Surface display of synthetic phytochelatins on Saccharomyces cerevisiae for enhanced ethanol production in heavy metal-contaminated substrates. BIORESOURCE TECHNOLOGY 2017; 245:1455-1460. [PMID: 28596072 DOI: 10.1016/j.biortech.2017.05.127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/18/2017] [Accepted: 05/19/2017] [Indexed: 06/07/2023]
Abstract
The aim of this work was to study the feasibility of surface displaying synthetic phytochelatin (EC) on Saccharomyces cerevisiae to overcome the inhibitory effect of heavy metals on ethanol production. Via the fusion of a gene encoding EC to an α-agglutinin gene, the engineered S. cerevisiae was able to successfully display EC on its surface. This surface engineered yeast strain exhibited an efficient cadmium adsorption capability and a remarkably enhanced cadmium tolerance. Moreover, its ethanol production efficiency was significantly improved as compared to a control strain in the presence of cadmium. Similar results could also be observed in the presence of other metals, such as nickel, lead and copper. Overall, this method allows simultaneous biorefinery and heavy metal removal when using heavy metal-contaminated biomass as raw materials.
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Affiliation(s)
- Chi-En Yang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - I-Ming Chu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Hong Wei
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan 32003, Taiwan
| | - Shen-Long Tsai
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
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40
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Pan J, Huang X, Li Y, Li M, Yao N, Zhou Z, Li X. Zinc protects against cadmium-induced toxicity by regulating oxidative stress, ions homeostasis and protein synthesis. CHEMOSPHERE 2017; 188:265-273. [PMID: 28886561 DOI: 10.1016/j.chemosphere.2017.08.106] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/14/2017] [Accepted: 08/19/2017] [Indexed: 06/07/2023]
Abstract
The widespread environmental toxin cadmium (Cd) is associated with numerous human diseases. The essential trace element zinc (Zn) strongly counteracts Cd-induced toxicity; however, the mechanism is incompletely understood. Here, we conducted RNA sequencing and bioinformatics analyses to determine the global gene expression profiles of yeast cells exposed to Cd or Cd plus Zn. We identified 912 Cd-induced and 627 Cd plus Zn-induced differentially expressed genes (DEGs). Adding Zn during Cd exposure efficiently reversed the expression of 92.1% of Cd-induced DEGs; that of 48.7% was entirely reversed. Gene Ontology, Cluster of Orthologous Group and KEGG Ontology analyses revealed that the response of yeasts to Cd or Cd plus Zn was mainly involved in metal-specific oxidative stress; energy production and conversion; ion homeostasis and ribosome biogenesis and translation. Exposure of yeasts to Cd plus Zn protected them from oxidative stress by efficiently inhibiting the expression of genes associated with Cd-triggered oxidative stress and preventing the disruption of Fe- and Zn-ion homeostasis and reduced glutathione and partially restored mitochondrial membrane potential. Moreover, Zn reduced the intracellular level of Cd to prevent the replacement by Cd of elements required for antioxidant enzyme activity and to protect protein sulphydryl groups against oxidation by free radicals. Further, Zn inhibited the synthesis alterations of Cd-induced ribosomal proteins, S-containing amino acids, S-rich proteins and antioxidant enzymes. Conversely, the investigation results of our study on the yeast model revealed that the Cd-treated protective effects of Zn on Cd-induced toxicity might be partially protective.
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Affiliation(s)
- Jingmei Pan
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Xinhe Huang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Yuxing Li
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Ming Li
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Ning Yao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Zhengdong Zhou
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Xueru Li
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China.
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41
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Antioxidant activity evaluation of dietary phytochemicals using Saccharomyces cerevisiae as a model. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.08.041] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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42
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Ingalls B, Duncker B, Kim D, McConkey B. Systems Level Modeling of the Cell Cycle Using Budding Yeast. Cancer Inform 2017. [DOI: 10.1177/117693510700300020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Proteins involved in the regulation of the cell cycle are highly conserved across all eukaryotes, and so a relatively simple eukaryote such as yeast can provide insight into a variety of cell cycle perturbations including those that occur in human cancer. To date, the budding yeast Saccharomyces cerevisiae has provided the largest amount of experimental and modeling data on the progression of the cell cycle, making it a logical choice for in-depth studies of this process. Moreover, the advent of methods for collection of high-throughput genome, transcriptome, and proteome data has provided a means to collect and precisely quantify simultaneous cell cycle gene transcript and protein levels, permitting modeling of the cell cycle on the systems level. With the appropriate mathematical framework and sufficient and accurate data on cell cycle components, it should be possible to create a model of the cell cycle that not only effectively describes its operation, but can also predict responses to perturbations such as variation in protein levels and responses to external stimuli including targeted inhibition by drugs. In this review, we summarize existing data on the yeast cell cycle, proteomics technologies for quantifying cell cycle proteins, and the mathematical frameworks that can integrate this data into representative and effective models. Systems level modeling of the cell cycle will require the integration of high-quality data with the appropriate mathematical framework, which can currently be attained through the combination of dynamic modeling based on proteomics data and using yeast as a model organism.
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Affiliation(s)
- B.P. Ingalls
- Department of Applied Mathematics, University of Waterloo
| | | | - D.R. Kim
- Department of Biology, University of Waterloo
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Jean N, Dumont E, Herzi F, Balliau T, Laabir M, Masseret E, Mounier S. Modifications of the soluble proteome of a mediterranean strain of the invasive neurotoxic dinoflagellate Alexandrium catenella under metal stress conditions. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 188:80-91. [PMID: 28472730 DOI: 10.1016/j.aquatox.2017.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 04/06/2017] [Accepted: 04/15/2017] [Indexed: 06/07/2023]
Abstract
The soluble proteome of the mediterranean strain ACT03 of the invasive neurotoxic dinoflagellate Alexandrium catenella exposed to lead or zinc at 6, 12 or 18μM (total concentrations), or under control conditions, was characterized by two-dimensional gel electrophoresis (2-DE). Zinc reduced (P<0.05) the total number of protein spots (-41%, -52% and -60%, at 6, 12 or 18μM, respectively). Besides, most of the proteins constituting the soluble proteome were down-regulated in response to lead or zinc stresses. These proteins were involved mainly in photosynthesis (20-37% for lead; 36-50% for zinc) (ribulose-1,5-bisphosphate carboxylase/oxygenase: RUBISCO; ferredoxin-NADP+ reductase: FNR; peridinin-chlorophyll a-protein: PCP), and in the oxidative stress response (29-34% for lead; 17-36% for zinc) (superoxide dismutase: SOD; proteasome α/β subunits). These negative effects could be partly compensated by the up-regulation of specific proteins such as ATP-synthase β subunit (+16.3 fold after exposure to lead at 12μM). Indeed, an increase in the abundance of ATP-synthase could enrich the ATP pool and provide more energy available for the cells to survive under metal stress, and make the ATP-synthase transport of metal cations out of the cells more efficient. Finally, this study shows that exposure to lead or zinc have a harmful effect on the soluble proteome of A. catenella ACT03, but also suggests the existence of an adaptative proteomic response to metal stresses, which could contribute to maintaining the development of this dinoflagellate in trace metal-contaminated ecosystems.
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Affiliation(s)
- Natacha Jean
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France.
| | - Estelle Dumont
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France.
| | - Faouzi Herzi
- Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France.
| | - Thierry Balliau
- PAPPSO-GQE-Le Moulon, INRA, Univ. Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, 91190, Gif-sur-Yvette, France.
| | - Mohamed Laabir
- MARBEC UMR 9190 IRD-Ifremer-CNRS-Université de Montpellier, Place Eugène Bataillon, Case 093, 34095 Montpellier Cedex 5, France.
| | - Estelle Masseret
- MARBEC UMR 9190 IRD-Ifremer-CNRS-Université de Montpellier, Place Eugène Bataillon, Case 093, 34095 Montpellier Cedex 5, France.
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Bahmani R, Kim D, Lee BD, Hwang S. Over-expression of tobacco UBC1 encoding a ubiquitin-conjugating enzyme increases cadmium tolerance by activating the 20S/26S proteasome and by decreasing Cd accumulation and oxidative stress in tobacco (Nicotiana tabacum). PLANT MOLECULAR BIOLOGY 2017; 94:433-451. [PMID: 28508171 DOI: 10.1007/s11103-017-0616-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 04/26/2017] [Indexed: 05/11/2023]
Abstract
Ubiquitin (Ub)-conjugating enzyme (UBC, E2) receives Ub from Ub-activating enzyme (E1) and transfers it to target proteins, thereby playing a key role in Ub/26S proteasome-dependent proteolysis. UBC has been reported to be involved in tolerating abiotic stress in plants, including drought, salt, osmotic and water stresses. To isolate the genes involved in Cd tolerance, we transformed WT (wild-type) yeast Y800 with a tobacco cDNA expression library and isolated a tobacco cDNA, NtUBC1 (Ub-conjugating enzyme), that enhances cadmium tolerance. When NtUBC1 was over-expressed in tobacco, cadmium tolerance was enhanced, but the Cd level was decreased. Interestingly, 20S proteasome activity was increased and ubiquitinated protein levels were diminished in response to cadmium in NtUBC1 tobacco. By contrast, proteasome activity was decreased and ubiquitinated protein levels were slightly enhanced by Cd treatment in control tobacco, which is sensitive to Cd. Moreover, the oxidative stress level was induced to a lesser extent by Cd in NtUBC1 tobacco compared with control plants, which is ascribed to the higher activity of antioxidant enzymes in NtUBC1 tobacco. In addition, NtUBC1 tobacco displayed a reduced accumulation of Cd compared with the control, likely due to the higher expression of CAX3 (Ca2+/H+ exchanger) and the lower expression of IRT1 (iron-responsive transporter 1) and HMA-A and -B (heavy metal ATPase). In contrast, atubc1 and atubc1atubc2 Arabidopsis exhibited lower Cd tolerance and proteasome activity than WT. In conclusion, NtUBC1 expression promotes cadmium tolerance likely by removing cadmium-damaged proteins via Ub/26S proteasome-dependent proteolysis or the Ub-independent 20S proteasome and by diminishing oxidative stress through the activation of antioxidant enzymes and decreasing Cd accumulation due to higher CAX3 and lower IRT1 and HMA-A/B expression in response to 50 µM Cd challenge for 3 weeks.
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Affiliation(s)
- Ramin Bahmani
- Department of Molecular Biology, Sejong University, Seoul, South Korea
- Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, South Korea
- Plant Engineering Research Institute, Sejong University, Seoul, South Korea
| | - DongGwan Kim
- Department of Molecular Biology, Sejong University, Seoul, South Korea
- Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, South Korea
- Plant Engineering Research Institute, Sejong University, Seoul, South Korea
| | - Byoung Doo Lee
- Department of Molecular Biology, Sejong University, Seoul, South Korea
| | - Seongbin Hwang
- Department of Molecular Biology, Sejong University, Seoul, South Korea.
- Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, South Korea.
- Plant Engineering Research Institute, Sejong University, Seoul, South Korea.
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Chasapis CT, Andreini C, Georgiopolou AK, Stefanidou ME, Vlamis-Gardikas A. Identification of the zinc, copper and cadmium metalloproteome of the protozoon Tetrahymena thermophila by systematic bioinformatics. Arch Microbiol 2017; 199:1141-1149. [DOI: 10.1007/s00203-017-1385-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/24/2017] [Accepted: 05/02/2017] [Indexed: 11/30/2022]
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Khan Z, Rehman A, Nisar MA, Zafar S, Zerr I. Biosorption behavior and proteomic analysis of Escherichia coli P4 under cadmium stress. CHEMOSPHERE 2017; 174:136-147. [PMID: 28161514 DOI: 10.1016/j.chemosphere.2017.01.132] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 01/19/2017] [Accepted: 01/26/2017] [Indexed: 06/06/2023]
Abstract
Bacteria develop a variety of adaptations at transcriptomic, metabolomic and proteomic levels in order to survive potentially damaging environmental perturbations. Present study is exploring the fluctuations in proteome of E. coli P4 to knob Cd+2-induced cytotoxicity. An attempt was also made to integrate all these approaches to gain comprehensive insight of Cd+2 stress response in E. coli P4. This study is exposing the altered behavior of various proteins and their underlying metabolic pathways which have previously not been reported with reference to Cd+2 stress such as sulfoquinovose biosynthesis and degradation pathway. Some of the responses studied on all integrated levels followed same dynamics and strategies to conserve energy by down regulating carbohydrate metabolism (depicted by the repression of succinyl-CoA ligase) and growth stasis (down regulation of ftsZ). Moreover, proteomic analysis clearly revealed the affection of Cd+2 stress on various proteins expression including Rrf, MdaB, DapA, GpmA,Cdd, FabI, DsbA, ZnuA and YihW found modulating key cellular metabolic pathways enabling E. coli P4 to withstand Cd+2-induced toxic effects. Furthermore, over-expression of Mn-SOD provided evidence that Cd+2exposure induces superoxide free radicals mediated oxidative stress rather than hydrogen peroxide (H2O2). EnvZ/OmpR -a two component cell envelope regulatory system was observed operating to homeostat the cell's internal environment. Cd+2 bioremediation potential of E. coli P4 and its kinetic and thermodynamic basis were studied by applying different isotherm models which nominated E. coli P4 a good bioresource for green chemistry to eradicate environmental Cd+2.
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Affiliation(s)
- Zaman Khan
- Department of Microbiology and Molecular Genetics, University of the Punjab, Lahore, Pakistan
| | - Abdul Rehman
- Department of Microbiology and Molecular Genetics, University of the Punjab, Lahore, Pakistan.
| | - Muhammad Atif Nisar
- Department of Microbiology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Saima Zafar
- Department of Neurology, Clinical Dementia Center and DZNE, Georg-August University, University Medical Center Goettingen (UMG), Robert-Koch-Str. 40, 37075, Goettingen, Germany
| | - Inga Zerr
- Department of Neurology, Clinical Dementia Center and DZNE, Georg-August University, University Medical Center Goettingen (UMG), Robert-Koch-Str. 40, 37075, Goettingen, Germany
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47
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O'Doherty PJ, Khan A, Johnson AJ, Rogers PJ, Bailey TD, Wu MJ. Proteomic response to linoleic acid hydroperoxide in Saccharomyces cerevisiae. FEMS Yeast Res 2017; 17:3752509. [PMID: 28449083 DOI: 10.1093/femsyr/fox022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 04/20/2017] [Indexed: 12/12/2022] Open
Abstract
Yeast AP-1 transcription factor (Yap1p) and the enigmatic oxidoreductases Oye2p and Oye3p are involved in counteracting lipid oxidants and their unsaturated breakdown products. In order to uncover the response to linoleic acid hydroperoxide (LoaOOH) and the roles of Oye2p, Oye3p and Yap1p, we carried out proteomic analysis of the homozygous deletion mutants oye3Δ, oye2Δ and yap1Δ alongside the diploid parent strain BY4743. The findings demonstrate that deletion of YAP1 narrowed the response to LoaOOH, as the number of proteins differentially expressed in yap1Δ was 70% of that observed in BY4743. The role of Yap1p in regulating the major yeast peroxiredoxin Tsa1p was demonstrated by the decreased expression of Tsa1p in yap1Δ. The levels of Ahp1p and Hsp31p, previously shown to be regulated by Yap1p, were increased in LoaOOH-treated yap1Δ, indicating their expression is also regulated by another transcription factor(s). Relative to BY4743, protein expression differed in oye3Δ and oye2Δ under LoaOOH, underscored by superoxide dismutase (Sod1p), multiple heat shock proteins (Hsp60p, Ssa1p, and Sse1p), the flavodoxin-like protein Pst2p and the actin stabiliser tropomyosin (Tpm1p). Proteins associated with glycolysis were increased in all strains following treatment with LoaOOH. Together, the dataset reveals, for the first time, the yeast proteomic response to LoaOOH, highlighting the significance of carbohydrate metabolism, as well as distinction between the roles of Oye3p, Oye2p and Yap1p.
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Affiliation(s)
- Patrick J O'Doherty
- School of Science and Health, Western Sydney University, Locked Bag 1797, Penrith NSW 2751, Australia
| | - Alamgir Khan
- Australian Proteome Analysis Facility (APAF), Macquarie University, Sydney NSW 2109 Australia
| | - Adam J Johnson
- School of Science and Health, Western Sydney University, Locked Bag 1797, Penrith NSW 2751, Australia
| | - Peter J Rogers
- School of Biomolecular and Physical Sciences, Griffith University, Nathan QLD 4111, Australia
| | - Trevor D Bailey
- School of Science and Health, Western Sydney University, Locked Bag 1797, Penrith NSW 2751, Australia
| | - Ming J Wu
- School of Science and Health, Western Sydney University, Locked Bag 1797, Penrith NSW 2751, Australia
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Zhai Q, Xiao Y, Zhao J, Tian F, Zhang H, Narbad A, Chen W. Identification of key proteins and pathways in cadmium tolerance of Lactobacillus plantarum strains by proteomic analysis. Sci Rep 2017; 7:1182. [PMID: 28446769 PMCID: PMC5430759 DOI: 10.1038/s41598-017-01180-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/22/2017] [Indexed: 12/20/2022] Open
Abstract
Our previous study confirmed the protective potential of Lactobacillus plantarum (L. plantarum) strains in alleviation of cadmium (Cd) toxicity in vivo and demonstrated that the observed protection largely depended on the tolerance of the strains to Cd-induced stress. It was also observed that there were significant intra-species differences in Cd tolerance of L. plantarum strains. In this study, we investigated the mechanism of Cd induced stress response of L. plantarum strains using the isobaric tags for relative and absolute quantitation (iTRAQ) based comparative proteomics. L. plantarum CCFM8610 (strongly resistant to Cd) and L. plantarum CCFM191 (sensitive to Cd) were selected as target strains, and their proteomic profiles in the presence and absence of Cd exposure were compared. We propose that the underlying mechanism of the exceptional Cd tolerance of CCFM8610 may be attributed to the following: (a) a specific energy-conservation survival mode; (b) mild induction of its cellular defense and repair system; (c) an enhanced biosynthesis of hydrophobic amino acids in response to Cd; (d) inherent superior Cd binding ability and effective cell wall biosynthesis ability; (e) a tight regulation on ion transport; (f) several key proteins, including prophage P2b protein 18, CadA, mntA and lp_3327.
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Affiliation(s)
- Qixiao Zhai
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China.,UK-China Joint Centre on Probiotic Bacteria, Norwich, NR4 7UA, UK
| | - Yue Xiao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
| | - Fengwei Tian
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China.,UK-China Joint Centre on Probiotic Bacteria, Norwich, NR4 7UA, UK
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China.,UK-China Joint Centre on Probiotic Bacteria, Norwich, NR4 7UA, UK
| | - Arjan Narbad
- UK-China Joint Centre on Probiotic Bacteria, Norwich, NR4 7UA, UK.,Gut Health and Food Safety Programme, Institute of Food Research, Norwich, NR4 7UA, United Kingdom
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China. .,UK-China Joint Centre on Probiotic Bacteria, Norwich, NR4 7UA, UK. .,Beijing Innovation Centre of Food Nutrition and Human Health, Beijing Technology & Business University, Beijing, 100048, People's Republic of China.
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Collin-Hansen C, Andersen RA, Steinnes E. Molecular defense systems are expressed in the king bolete (Boletus edulis) growing near metal smelters. Mycologia 2017. [DOI: 10.1080/15572536.2006.11832747] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Christian Collin-Hansen
- Department of Chemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Rolf A. Andersen
- Department of Biology, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Eiliv Steinnes
- Department of Chemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
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David M, Krishna PM, Sangeetha J. Elucidation of impact of heavy metal pollution on soil bacterial growth and extracellular polymeric substances flexibility. 3 Biotech 2016; 6:172. [PMID: 28330244 PMCID: PMC4988954 DOI: 10.1007/s13205-016-0475-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 08/01/2016] [Indexed: 11/28/2022] Open
Abstract
Metal bioaccessibility is an alarming issue in croplands of mining sites due to overloading of toxic metals. Hence, the present study is aimed to determine the overloading of toxic metal in croplands across the Tawag village, Hutti, Raichur, India. Correspondingly, to identify the soil bacterial growth, physiological oxidative stress enzyme activity and surface macromolecular functional group evolution were analysed in and around the toxic metal contaminated sites through FT-IR and FT-Raman spectrometry. The evaluated results attribute that the study area is heavily polluted with the toxic metals such as arsenic, cadmium, chromium, lead and zinc. However, biochemical and 16S rRNA gene sequence homology tree confirmed that the arsenic and cadmium-resistant isolate belongs to Bacillus sp. MDPMK-02 and retrieved unique Gene Bank ID KT596811 (accession number) at National Centre for Biotechnology information (NCBI), India. Additionally, sodium arsenite-amended culture media possessing reduced biomass and enhanced the activity of oxidative stress defence enzymes such as superoxide dismutase (SOD) and catalase (CAT) than cadmium chloride-amended medium and control. Subsequently, the infrared (IR) and Raman spectral analytical assessment distinguish that arsenic-treated Gram-positive isolate membrane fetched high percentage of hydration, elevation of surface polysaccharides, proteins and polyhydroxybutyric acid (PHBA) molecular specific stretch intensity compared to cadmium exposures. From these results, the study concluded that the mining wastes significantly pollute the surrounding croplands, and also Bacillus sp. MDPMK-02 possesses good chemosensing for cross-protection and bio-adaptation of toxic metal ions. Hence, these isolates can be compiled and implemented in environmental hazardous management techniques such as bioremediation, bioleaching and biodegradation.
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Affiliation(s)
- Muniswamy David
- Environmental Toxicology and Molecular Biology Laboratory, Department of Zoology, Karnatak University, Dharwad, Karnataka, 580003, India.
| | - Paidi Murali Krishna
- Environmental Toxicology and Molecular Biology Laboratory, Department of Zoology, Karnatak University, Dharwad, Karnataka, 580003, India
| | - Jeybalan Sangeetha
- Department of Environmental Science, Central University of Kerala, Kasaragod, Kerala, 671316, India
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