Pesticide-tolerant bacteria isolated from a biopurification system to remove commonly used pesticides to protect water resources
In this study, we selected and characterized different pesticide-tolerant bacteria isolated from a biomixture of a biopurification system that had received continuous applications of a pesticides mixture. The amplicon analysis of biomixture reported that the phyla Proteobacteria, Firmicutes, Bactero...
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| Veröffentlicht in: | PloS one 2020-06, Vol.15 (6), p.e0234865-e0234865 |
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| creator | Briceño, Gabriela Lamilla, Claudio Leiva, Bárbara Levio, Marcela Donoso-Piñol, Pamela Schalchli, Heidi Gallardo, Felipe Diez, María Cristina |
| description | In this study, we selected and characterized different pesticide-tolerant bacteria isolated from a biomixture of a biopurification system that had received continuous applications of a pesticides mixture. The amplicon analysis of biomixture reported that the phyla Proteobacteria, Firmicutes, Bacteroidetes and Actinobacteria were predominant. Six strains grew in the presence of chlorpyrifos and iprodione. Biochemical characterization showed that all isolates were positive for esterase, acid phosphatase, among others, and they were identified as Pseudomonas, Rhodococcus and Achromobacter based on molecular and proteomic analysis. Bacterial growth decreased as both pesticide concentrations increased from 10 to 100 mg L.sup.-1 in liquid culture. The Achromobacter sp. strain C1 showed the best chlorpyrifos removal rate of 0.072-0.147 d.sup.-1 a half-life of 4.7-9.7 d and a maximum metabolite concentration of 2.10 mg L.sup.-1 at 120 h. On the other hand, Pseudomonas sp. strain C9 showed the highest iprodione removal rate of 0.100-0.193 d.sup.-1 a half-life of 4-7 d and maximum metabolite concentration of 0.95 mg L.sup.-1 at 48 h. The Achromobacter and Pseudomonas strains showed a good potential as chlorpyrifos and iprodione-degrading bacteria. |
| doi_str_mv | 10.1371/journal.pone.0234865 |
| format | Article |
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The amplicon analysis of biomixture reported that the phyla Proteobacteria, Firmicutes, Bacteroidetes and Actinobacteria were predominant. Six strains grew in the presence of chlorpyrifos and iprodione. Biochemical characterization showed that all isolates were positive for esterase, acid phosphatase, among others, and they were identified as Pseudomonas, Rhodococcus and Achromobacter based on molecular and proteomic analysis. Bacterial growth decreased as both pesticide concentrations increased from 10 to 100 mg L.sup.-1 in liquid culture. The Achromobacter sp. strain C1 showed the best chlorpyrifos removal rate of 0.072-0.147 d.sup.-1 a half-life of 4.7-9.7 d and a maximum metabolite concentration of 2.10 mg L.sup.-1 at 120 h. On the other hand, Pseudomonas sp. strain C9 showed the highest iprodione removal rate of 0.100-0.193 d.sup.-1 a half-life of 4-7 d and maximum metabolite concentration of 0.95 mg L.sup.-1 at 48 h. The Achromobacter and Pseudomonas strains showed a good potential as chlorpyrifos and iprodione-degrading bacteria.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0234865</identifier><identifier>PMID: 32598366</identifier><language>eng</language><publisher>San Francisco: Public Library of Science</publisher><subject>Acetylcholine receptors ; Achromobacter ; Acid phosphatase ; Bacteria ; Biodegradation ; Biofiltration ; Biology and Life Sciences ; Chemical properties ; Chlorpyrifos ; Consortia ; Ecology and Environmental Sciences ; Environmental aspects ; Esterase ; Half life ; Iprodione ; Liquid culture ; Metabolism ; Metabolites ; Methods ; Microorganisms ; Pesticides ; Pollutant removal ; Proteobacteria ; Pseudomonas ; Rhodococcus ; Soil contamination ; Strains (organisms) ; Water resources ; Water treatment</subject><ispartof>PloS one, 2020-06, Vol.15 (6), p.e0234865-e0234865</ispartof><rights>COPYRIGHT 2020 Public Library of Science</rights><rights>2020 Briceño et al. 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one</jtitle><date>2020-06-29</date><risdate>2020</risdate><volume>15</volume><issue>6</issue><spage>e0234865</spage><epage>e0234865</epage><pages>e0234865-e0234865</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>In this study, we selected and characterized different pesticide-tolerant bacteria isolated from a biomixture of a biopurification system that had received continuous applications of a pesticides mixture. The amplicon analysis of biomixture reported that the phyla Proteobacteria, Firmicutes, Bacteroidetes and Actinobacteria were predominant. Six strains grew in the presence of chlorpyrifos and iprodione. Biochemical characterization showed that all isolates were positive for esterase, acid phosphatase, among others, and they were identified as Pseudomonas, Rhodococcus and Achromobacter based on molecular and proteomic analysis. Bacterial growth decreased as both pesticide concentrations increased from 10 to 100 mg L.sup.-1 in liquid culture. The Achromobacter sp. strain C1 showed the best chlorpyrifos removal rate of 0.072-0.147 d.sup.-1 a half-life of 4.7-9.7 d and a maximum metabolite concentration of 2.10 mg L.sup.-1 at 120 h. On the other hand, Pseudomonas sp. strain C9 showed the highest iprodione removal rate of 0.100-0.193 d.sup.-1 a half-life of 4-7 d and maximum metabolite concentration of 0.95 mg L.sup.-1 at 48 h. The Achromobacter and Pseudomonas strains showed a good potential as chlorpyrifos and iprodione-degrading bacteria.</abstract><cop>San Francisco</cop><pub>Public Library of Science</pub><pmid>32598366</pmid><doi>10.1371/journal.pone.0234865</doi><tpages>e0234865</tpages><orcidid>https://orcid.org/0000-0002-9494-1551</orcidid><oa>free_for_read</oa></addata></record> |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Public Library of Science (PLoS); PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Acetylcholine receptors Achromobacter Acid phosphatase Bacteria Biodegradation Biofiltration Biology and Life Sciences Chemical properties Chlorpyrifos Consortia Ecology and Environmental Sciences Environmental aspects Esterase Half life Iprodione Liquid culture Metabolism Metabolites Methods Microorganisms Pesticides Pollutant removal Proteobacteria Pseudomonas Rhodococcus Soil contamination Strains (organisms) Water resources Water treatment |
| title | Pesticide-tolerant bacteria isolated from a biopurification system to remove commonly used pesticides to protect water resources |
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