1
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Contribution of critical doses of iprovalicarb, mepanipyrim and tetraconazole to the generation of volatile compounds from Monastrell-based wines. Food Chem 2023; 403:134324. [DOI: 10.1016/j.foodchem.2022.134324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 11/21/2022]
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2
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Gangola S, Bhatt P, Kumar AJ, Bhandari G, Joshi S, Punetha A, Bhatt K, Rene ER. Biotechnological tools to elucidate the mechanism of pesticide degradation in the environment. CHEMOSPHERE 2022; 296:133916. [PMID: 35149016 DOI: 10.1016/j.chemosphere.2022.133916] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 12/23/2021] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
Pesticides are widely used in agriculture, households, and industries; however, they have caused severe negative effects on the environment and human health. To clean up pesticide contaminated sites, various technological strategies, i.e. physicochemical and biological, are currently being used throughout the world. Biological approaches have proven to be a viable method for decontaminating pesticide-contaminated soils and water environments. The biological process eliminates contaminants by utilizing microorganisms' catabolic ability. Pesticide degradation rates are influenced by a variety of factors, including the pesticide's structure, concentration, solubility in water, soil type, land use pattern, and microbial activity in the soil. There is currently a knowledge gap in this field of study because researchers are unable to gather collective information on the factors affecting microbial growth, metabolic pathways, optimal conditions for degradation, and genomic, transcriptomic, and proteomic changes caused by pesticide stress on the microbial communities. The use of advanced tools and omics technology in research can bridge the existing gap in our knowledge regarding the bioremediation of pesticides. This review provides new insights on the research gaps and offers potential solutions for pesticide removal from the environment through the use of various microbe-mediated technologies.
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Affiliation(s)
- Saurabh Gangola
- School of Agriculture, Graphic Era Hill University, Bhimtal, 263136, Uttarakhand, India
| | - Pankaj Bhatt
- Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, PR China.
| | | | - Geeta Bhandari
- Department of Biosciences, Swami Rama Himalayan University, Dehradun, Uttarakhand, India
| | - Samiksha Joshi
- School of Agriculture, Graphic Era Hill University, Bhimtal, 263136, Uttarakhand, India
| | - Arjita Punetha
- Department of Environmental Science, GB Pant University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India
| | - Kalpana Bhatt
- Department of Botany and Microbiology, Gurukul Kangri University, Haridwar, 249404, Uttarakhand, India
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, P. O. Box 3015, 2601 DA Delft, the Netherlands
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3
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Abstract
Accidental spills and the misuse of chemicals may lead to current and legacy environmental contamination and pose concerns over possible (eco)toxicological secondary effects and risks toward non-target microbes and higher eukaryotes, including humans, in ecosystems. In the last decades, scientists and regulators have faced requests to thoroughly screen, prioritize and predict the possible deleterious effects of the huge numbers of existing and emerging xenobiotics, wastewaters and environmental samples on biological systems. In this context, it has become necessary to develop and validate (eco)toxicity bioassays based on microorganisms (e.g., bacteria, microalga, yeast, filamentous fungi, protozoa) as test-organisms whose data should be meaningful for environmental (micro)organisms that may be exposed to contaminated environments. These generally simple, fast and cost-effective bioassays may be preliminary and complementary to the more complex and long-term whole-organism animal-based traditional ecotoxicity tests. With the goal of highlighting the potential offered by microbial-based bioassays as non-animal alternatives in (eco)toxicity testing, the present chapter provides an overview of the current state-of-the art in the development and use of microbial toxicity bioassays through the examination of relatively recent examples with a diverse range of toxicity endpoints. It goes into the (eco)toxicological relevance of these bioassays, ranging from the more traditional microalga- and bacterial-based assays already accepted at regulatory level and commercially available to the more innovative microbial transcriptional profiling and gene expression bioassays, including some examples of biosensors.
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Affiliation(s)
- Cristina A Viegas
- iBB-Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal.
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4
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The effect of two antifungal commercial formulations on the metabolism of a commercial Saccharomyces cerevisiae strain and their repercussion on fermentation evolution and phenylalanine catabolism. Food Microbiol 2020; 92:103554. [DOI: 10.1016/j.fm.2020.103554] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 03/10/2020] [Accepted: 05/27/2020] [Indexed: 02/06/2023]
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5
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Briz-Cid N, Pose-Juan E, Nicoletti M, Simal-Gándara J, Fasoli E, Rial-Otero R. Influence of tetraconazole on the proteome profile of Saccharomyces cerevisiae Lalvin T73™ strain. J Proteomics 2020; 227:103915. [PMID: 32711165 DOI: 10.1016/j.jprot.2020.103915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 07/14/2020] [Accepted: 07/17/2020] [Indexed: 11/16/2022]
Abstract
This work aimed to evaluate the modifications on the proteome profile of Saccharomyces cerevisiae T73™ strain as a consequence of its adaptive response to the presence of tetraconazole molecules in the fermentation medium. Pasteurised grape juices were separately supplemented with tetraconazole or a commercial formulation containing 12.5% w/v of tetraconazole at two concentration levels. In addition, experiments without fungicides were developed for comparative purposes. Proteome profiles of yeasts cultured in the presence or absence of fungicide molecules were different. Independently of the fungicide treatment applied, the highest variations concerning the control sample were observed for those proteins involved in metabolic processes, especially in the metabolism of nitrogen compounds. Tetraconazole molecules altered the abundance of several enzymes involved in the biosynthesis of amino acids, purines, and ergosterol. Moreover, differences in the abundance of several enzymes of the TCA cycle were found. Changes observed were different between the active substance and the commercial formulation. SIGNIFICANCE: The presence of fungicide residues in grape juice has direct implications on the development of the aromatic profile of the wine. These alterations could be related to changes in the secondary metabolism of yeasts. However, the molecular mechanisms involved in the response of yeasts to fungicide residues remains quite unexplored. Through this exhaustive proteomic study, alterations in the amino acids biosynthesis pathways due to the presence of the tetraconazole molecules were observed. Amino acids are precursors of some important higher alcohols and ethyl acetates (such as methionol, 2-phenylethanol, isoamyl alcohol or 2-phenylacetate). Besides, the effect of tetraconazole on the ergosterol biosynthesis pathway could be related to a higher production of medium-chain fatty acids and their corresponding ethyl acetates.
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Affiliation(s)
- Noelia Briz-Cid
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, CITACA-Agri-Food Research and Transfer Cluster, Campus Auga, University of Vigo, 32004-Ourense, Spain
| | - Eva Pose-Juan
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, CITACA-Agri-Food Research and Transfer Cluster, Campus Auga, University of Vigo, 32004-Ourense, Spain
| | - Maria Nicoletti
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan 20131, Italy
| | - Jesús Simal-Gándara
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, CITACA-Agri-Food Research and Transfer Cluster, Campus Auga, University of Vigo, 32004-Ourense, Spain
| | - Elisa Fasoli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan 20131, Italy.
| | - Raquel Rial-Otero
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, CITACA-Agri-Food Research and Transfer Cluster, Campus Auga, University of Vigo, 32004-Ourense, Spain.
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6
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Cuco AP, Wolinska J, Santos JI, Abrantes N, Gonçalves FJM, Castro BB. Can parasites adapt to pollutants? A multigenerational experiment with a Daphnia × Metschnikowia model system exposed to the fungicide tebuconazole. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2020; 226:105584. [PMID: 32795838 DOI: 10.1016/j.aquatox.2020.105584] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 07/05/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
There is increasing evidence about negative effects of fungicides on non-target organisms, including parasitic species, which are key elements in food webs. Previous experiments showed that environmentally relevant concentrations of fungicide tebuconazole are toxic to the microparasite Metschnikowia bicuspidata, a yeast species that infects the planktonic crustacean Daphnia spp. However, due to their short-term nature, this and other experimental studies were not able to test if parasites could potentially adapt to these contaminants. Here, we tested if M. bicuspidata parasite can adapt to tebuconazole selective pressure. Infected D. magna lineages were reared under control conditions (no tebuconazole) and environmentally realistic tebuconazole concentrations, for four generations, and their performance was compared in a follow-up reciprocal assay. Additionally, we assessed whether the observed effects were transient (phenotypic) or permanent (genetic), by reassessing parasite fitness after the removal of selective pressure. Parasite fitness was negatively affected throughout the multigenerational exposure to the fungicide: prevalence of infection and spore load decreased, whereas host longevity increased, in comparison to control (naive) parasite lineages. In a follow-up reciprocal assay, tebuconazole-conditioned (TEB) lineages performed worse than naive parasite lineages, both in treatments without and with tebuconazole, confirming the cumulative negative effect of tebuconazole. The underperformance of TEB lineages was rapidly reversed after removing the influence of the selective pressure (tebuconazole), demonstrating that the costs of prolonged exposure to tebuconazole were phenotypic and transient. The microparasitic yeast M. bicuspidata did not reveal potential for rapid evolution to an anthropogenic selective pressure; instead, the long-term exposure to tebuconazole was hazardous to this non-target species. These findings highlight the potential environmental risks of azole fungicides on non-target parasitic fungi. The underperformance of these microbes and their inability to adapt to such stressors can interfere with the key processes where they intervene. Further research is needed to rank fungicides based on the hazard to non-target fungi (parasites, but also symbionts and decomposers), towards more effective management and protective legislation.
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Affiliation(s)
- Ana P Cuco
- Department of Biology, University of Aveiro, Aveiro, Portugal; CESAM, University of Aveiro, Aveiro, Portugal; CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal.
| | - Justyna Wolinska
- Department of Ecosystem Research, Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany; Department of Biology, Chemistry, Pharmacy, Institute of Biology, Freie Universität Berlin, Berlin, Germany
| | - Joana I Santos
- Department of Biology, University of Aveiro, Aveiro, Portugal; CESAM, University of Aveiro, Aveiro, Portugal
| | - Nelson Abrantes
- CESAM, University of Aveiro, Aveiro, Portugal; Department of Environment and Planning, University of Aveiro, Aveiro, Portugal
| | - Fernando J M Gonçalves
- Department of Biology, University of Aveiro, Aveiro, Portugal; CESAM, University of Aveiro, Aveiro, Portugal
| | - Bruno B Castro
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
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7
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Sieiro-Sampedro T, Briz-Cid N, Pose-Juan E, Figueiredo-González M, González-Barreiro C, Simal-Gándara J, Cancho-Grande B, Rial-Otero R. Tetraconazole alters the methionine and ergosterol biosynthesis pathways in Saccharomyces yeasts promoting changes on volatile derived compounds. Food Res Int 2020; 130:108930. [DOI: 10.1016/j.foodres.2019.108930] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 01/23/2023]
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8
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Zhou Q, Fu M, Xu M, Chen X, Qiu J, Wang F, Yan R, Wang J, Zhao S, Xin X, Chen L. Application of antagonist Bacillus amyloliquefaciens NCPSJ7 against Botrytis cinerea in postharvest Red Globe grapes. Food Sci Nutr 2020; 8:1499-1508. [PMID: 32180959 PMCID: PMC7063376 DOI: 10.1002/fsn3.1434] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/17/2019] [Accepted: 01/05/2020] [Indexed: 12/18/2022] Open
Abstract
We investigated the effects and possible mechanisms of Bacillus amyloliquefaciens NCPSJ7 against the gray mold caused by Botrytis cinerea in the postharvest Red Globe grapes. The disease incidence, lesion diameter, decay index, and some resistance‐related enzymes were evaluated. The antioxidant capacity of grape treated with 1 × 104 CFU/ml B. cinerea alone and combined with 1 × 107 CFU/ml NCPSJ7 was also determined. The results showed that NCPSJ7 + B. cinerea reduced the disease incidence, lesion diameter, and decay index of postharvest grapes and enhanced the activities of polyphenol oxidase, peroxidase, chitinase, and β‐1,3‐glucanase during different storage periods. Furthermore, the oxidative resistance, demonstrated by an escalating trend in the total phenolic content, DPPH free radical clearance rate, reducing power, and superoxide anion clearance rate after lesion presence, was improved. However, NCPSJ7 showed an inhibitory effect on gray mold, but resulted in the reduced antioxidant capacity in the grapes.
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Affiliation(s)
- Qingxin Zhou
- Institute of Agro-Food Science and Technology Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing Ministry of Agriculture Jinan China.,College of Life Science Shandong Normal University Jinan China
| | - Maorun Fu
- College of Food Science and Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Minhui Xu
- College of Food Science and Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Xiangyan Chen
- Institute of Agro-Food Science and Technology Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing Ministry of Agriculture Jinan China
| | - Jiying Qiu
- Institute of Agro-Food Science and Technology Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing Ministry of Agriculture Jinan China
| | - Fengli Wang
- Institute of Agro-Food Science and Technology Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing Ministry of Agriculture Jinan China.,College of Life Science Shandong Normal University Jinan China
| | - Ran Yan
- College of Food Science and Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan China
| | - Junhua Wang
- Institute of Agro-Food Science and Technology Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing Ministry of Agriculture Jinan China
| | - Shuangzhi Zhao
- Institute of Agro-Food Science and Technology Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing Ministry of Agriculture Jinan China
| | - Xue Xin
- Institute of Agro-Food Science and Technology Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing Ministry of Agriculture Jinan China
| | - Leilei Chen
- Institute of Agro-Food Science and Technology Shandong Academy of Agricultural Sciences/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing Ministry of Agriculture Jinan China
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9
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Sieiro-Sampedro T, Pose-Juan E, Briz-Cid N, Figueiredo-González M, Torrado-Agrasar A, González-Barreiro C, Simal-Gandara J, Cancho-Grande B, Rial-Otero R. Mepanipyrim residues on pasteurized red must influence the volatile derived compounds from Saccharomyces cerevisiae metabolism. Food Res Int 2019; 126:108566. [DOI: 10.1016/j.foodres.2019.108566] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/01/2019] [Accepted: 07/14/2019] [Indexed: 12/14/2022]
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10
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Sieiro-Sampedro T, Figueiredo-González M, González-Barreiro C, Simal-Gandara J, Cancho-Grande B, Rial-Otero R. Impact of mepanipyrim and tetraconazole in Mencía wines on the biosynthesis of volatile compounds during the winemaking process. Food Chem 2019; 300:125223. [DOI: 10.1016/j.foodchem.2019.125223] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 07/17/2019] [Accepted: 07/21/2019] [Indexed: 02/02/2023]
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11
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Tang R, Tang T, Tang G, Liang Y, Wang W, Yang J, Niu J, Tang J, Zhou Z, Cao Y. Pyrimethanil Ionic Liquids Paired with Various Natural Organic Acid Anions for Reducing Its Adverse Impacts on the Environment. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:11018-11024. [PMID: 31512873 DOI: 10.1021/acs.jafc.9b03643] [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] [Indexed: 06/10/2023]
Abstract
In this study, nine pyrimethanil ionic liquids (PILs) were synthesized through an acid-base reaction with nine naturally derived organic acid anions to improve the physicochemical properties and reduce the environmental adverse impacts. The PILs presented lower volatilization, higher photostability, better soil adsorption capacity, and improved fungicidal activity relative to pyrimethanil. When the length of the carbon chains in the anions was increased, the PILs showed better properties in terms of melting point, water solubility, volatility, and surface tension. The photostabilities and fungicidal activities of the PILs were significantly improved when cyclic compounds were used as the paired anion ions. With enhanced physicochemical properties and better fungicidal activity, PIL7 was selected as the best alternative to pyrimethanil. The intrinsic disadvantages of pyrimethanil could be surmounted using the system developed in the study; thus, ILs could have immense potential in the development of eco-friendly and efficient fungicides in the future.
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Affiliation(s)
- Rong Tang
- College of Plant Protection , China Agricultural University , Beijing , China 100193
| | - Tao Tang
- State Key Laboratory for Quality and Safety of Agro-products, Institute of Quality and Standard for Agricultural Products , Zhejiang Academy of Agricultural Sciences , Hangzhou , China 310021
| | - Gang Tang
- College of Plant Protection , China Agricultural University , Beijing , China 100193
| | - You Liang
- College of Plant Protection , China Agricultural University , Beijing , China 100193
| | - Weichen Wang
- College of Plant Protection , China Agricultural University , Beijing , China 100193
| | - Jiale Yang
- College of Plant Protection , China Agricultural University , Beijing , China 100193
| | - Junfan Niu
- College of Plant Protection , China Agricultural University , Beijing , China 100193
| | - Jingyue Tang
- College of Plant Protection , China Agricultural University , Beijing , China 100193
| | - Zhiyuan Zhou
- College of Plant Protection , China Agricultural University , Beijing , China 100193
| | - Yongsong Cao
- College of Plant Protection , China Agricultural University , Beijing , China 100193
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12
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Gil FN, Gonçalves AC, Becker JD, Viegas CA. Comparative analysis of transcriptomic responses to sub-lethal levels of six environmentally relevant pesticides in Saccharomyces cerevisiae. ECOTOXICOLOGY (LONDON, ENGLAND) 2018; 27:871-889. [PMID: 29611082 DOI: 10.1007/s10646-018-1929-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/17/2018] [Indexed: 06/08/2023]
Abstract
Accidental spills and misuse of pesticides may lead to current and/or legacy environmental contamination and may pose concerns regarding possible risks towards non-target microbes and higher eukaryotes in ecosystems. The present study was aimed at comparing transcriptomic responses to effects of sub-lethal levels of six environmentally relevant pesticide active substances in the Saccharomyces cerevisiae eukaryotic model. The insecticide carbofuran, the fungicide pyrimethanil and the herbicides alachlor, S-metolachlor, diuron and methyl(4-chloro-2-methylphenoxy)acetate were studied. Some are currently used agricultural pesticides, while others are under restricted utilization or banned in Europe and/or North America albeit being used in other geographical locations. In the present work transcriptional profiles representing genome-wide responses in a standardized yeast population upon 2 h of exposure to concentrations of each compound exerting equivalent toxic effects, i.e., inhibition of growth by 20% relative to the untreated control cells, were examined. Hierarchical clustering and Venn analyses of the datasets of differentially expressed genes pointed out transcriptional patterns distinguishable between the six active substances. Functional enrichment analyses allowed predicting mechanisms of pesticide toxicity and response to pesticide stress in the yeast model. In general, variations in transcript numbers of selected genes assessed by Real-Time quantitative reverse transcription polymerase chain reaction confirmed microarray data and correlated well with growth inhibitory effects. A possible biological relevance of mechanistic predictions arising from these comparative transcriptomic analyses is discussed in the context of better understanding potential modes of action and adverse side-effects of pesticides.
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Affiliation(s)
- Fátima N Gil
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico (IST), Universidade de Lisboa (UL), Av Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Alina C Gonçalves
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico (IST), Universidade de Lisboa (UL), Av Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Jörg D Becker
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande N°6, 2780-156, Oeiras, Portugal
| | - Cristina A Viegas
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico (IST), Universidade de Lisboa (UL), Av Rovisco Pais, 1049-001, Lisboa, Portugal.
- Department of Bioengineering, IST, UL, Av Rovisco Pais, 1049-001, Lisboa, Portugal.
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13
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Antimicrobial cocktails to control bacterial and fungal contamination in Chlamydomonas reinhardtii cultures. Biotechniques 2016; 60:145-9. [DOI: 10.2144/000114392] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 12/03/2015] [Indexed: 11/23/2022] Open
Abstract
Chlamydomonas reinhardtii is a unicellular green alga widely used for research in photosynthesis, cell cycle regulation, ciliary biogenesis, and other physiological processes. Sterile cultures are needed for these studies, but contamination from bacteria and fungi occurs frequently. Although the One-shot Solution cocktail consisting of carbendazim, ampicillin, and cefotaxime has been developed for removing these contaminants from algal cultures, it is not always effective. Here we report two new antimicrobial cocktails for treating mixed bacterial and fungal contamination of Chlamydomonas cultures. A combination of the bactericide nalidixic acid with one of two fungicides, azoxystrobin or tebuconazole, was more effective than the One-shot Solution cocktail. In some of our tests, we find that alternating use of our new cocktails with One-shot Solution is needed to remove obstinate contaminants.
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14
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Braconi D, Bernardini G, Santucci A. Saccharomyces cerevisiae as a model in ecotoxicological studies: A post-genomics perspective. J Proteomics 2015; 137:19-34. [PMID: 26365628 DOI: 10.1016/j.jprot.2015.09.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 08/29/2015] [Accepted: 09/02/2015] [Indexed: 12/13/2022]
Abstract
The budding yeast Saccharomyces cerevisiae represents a well-consolidated and widely used eukaryotic model, with a number of features that make it an ideal organism to carry out functional toxicological studies. Several advantages are permitted by the use of yeast cells, as the possibility to identify molecular biomarkers, unknown mechanisms of action and novel potential targets. Thanks to the evolutionary conservation, yeast can provide also useful clues allowing the prioritization of more complex analyses and toxicity predictions in higher eukaryotes. The last two decades were incredibly fruitful for yeast "omics", but referring to the analysis of the effects of pesticides on yeast much still remains to be done. Furthermore, a deeper knowledge of the effects of environmental pollutants on biotechnological processes associated with the use of yeasts is to be hoped.
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Affiliation(s)
- Daniela Braconi
- Dipartimento di Biotecnologie, Chimica e Farmacia, via A. Moro 2, Università degli Studi di Siena, 53100 Siena, Italy
| | - Giulia Bernardini
- Dipartimento di Biotecnologie, Chimica e Farmacia, via A. Moro 2, Università degli Studi di Siena, 53100 Siena, Italy
| | - Annalisa Santucci
- Dipartimento di Biotecnologie, Chimica e Farmacia, via A. Moro 2, Università degli Studi di Siena, 53100 Siena, Italy.
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15
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Yeast toxicogenomics: lessons from a eukaryotic cell model and cell factory. Curr Opin Biotechnol 2015; 33:183-91. [DOI: 10.1016/j.copbio.2015.03.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 02/16/2015] [Accepted: 03/05/2015] [Indexed: 12/21/2022]
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16
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Gil FN, Moreira-Santos M, Chelinho S, Pereira C, Feliciano JR, Leitão JH, Sousa JP, Ribeiro R, Viegas CA. Suitability of a Saccharomyces cerevisiae-based assay to assess the toxicity of pyrimethanil sprayed soils via surface runoff: comparison with standard aquatic and soil toxicity assays. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 505:161-171. [PMID: 25461018 DOI: 10.1016/j.scitotenv.2014.09.094] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/27/2014] [Accepted: 09/28/2014] [Indexed: 06/04/2023]
Abstract
The present study is aimed at evaluating whether a gene expression assay with the microbial eukaryotic model Saccharomyces cerevisiae could be used as a suitable warning tool for the rapid preliminary screening of potential toxic effects on organisms due to scenarios of soil and water contamination with pyrimethanil. The assay consisted of measuring changes in the expression of the selected pyrimethanil-responsive genes ARG3 and ARG5,6 in a standardized yeast population. Evaluation was held by assessing the toxicity of surface runoff, a major route of pesticide exposure in aquatic systems due to non-point-source pollution, which was simulated with a pyrimethanil formulation at a semifield scale mimicking worst-case scenarios of soil contamination (e.g. accident or improper disposal). Yeast cells 2-h exposure to the runoff samples led to a significant 2-fold increase in the expression of both indicator genes. These results were compared with those from assays with organisms relevant for the aquatic and soil compartments, namely the nematode Caenorhabditis elegans (reproduction), the freshwater cladoceran Daphnia magna (survival and reproduction), the benthic midge Chironomus riparius (growth), and the soil invertebrates Folsomia candida and Enchytraeus crypticus (survival and reproduction). Under the experimental conditions used to simulate accidental discharges into soil, runoff waters were highly toxic to the standard test organisms, except for C. elegans. Overall, results point out the usefulness of the yeast assay to provide a rapid preview of the toxicity level in preliminary screenings of environmental samples in situations of inadvertent high pesticide contamination. Advantages and limitations of this novel method are discussed.
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Affiliation(s)
- Fátima N Gil
- IBB-Institute for Biotechnology and Bioengineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Matilde Moreira-Santos
- IMAR-Instituto do Mar & MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Apartado 3046, 3001-401 Coimbra, Portugal
| | - Sónia Chelinho
- IMAR-Instituto do Mar & MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Apartado 3046, 3001-401 Coimbra, Portugal
| | - Carla Pereira
- IMAR-Instituto do Mar & MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Apartado 3046, 3001-401 Coimbra, Portugal
| | - Joana R Feliciano
- IBB-Institute for Biotechnology and Bioengineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Jorge H Leitão
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; IBB-Institute for Biotechnology and Bioengineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - José P Sousa
- IMAR-Instituto do Mar & MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Apartado 3046, 3001-401 Coimbra, Portugal
| | - Rui Ribeiro
- IMAR-Instituto do Mar & MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Apartado 3046, 3001-401 Coimbra, Portugal
| | - Cristina A Viegas
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; IBB-Institute for Biotechnology and Bioengineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
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