Bioremediation potential of new cadmium, chromium, and nickel-resistant bacteria isolated from tropical agricultural soil
| Autor: | Milena Tavares Lima Constancio, Rafael Correia da Silva, Wanderley José de Melo, David Luciano Rosalen, Guilherme Deomedesse Minari, Lucia Maria Carareto Alves, Luciana Maria Saran |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Brasil University |
| Rok vydání: | 2020 |
| Předmět: |
Chromium
Health Toxicology and Mutagenesis 0211 other engineering and technologies chemistry.chemical_element Potentially toxic metals contaminated areas 02 engineering and technology 010501 environmental sciences 01 natural sciences Soil management Minimum tillage Paenibacillus Bioremediation Nickel Soil Pollutants Soil Microbiology 0105 earth and related environmental sciences 021110 strategic defence & security studies Cadmium Tropical Climate biology Bacteria Resistance to metals Cupriavidus Public Health Environmental and Occupational Health Agriculture General Medicine biology.organism_classification Pollution Soil contamination Heavy metal Biodegradation Environmental chemistry Environmental chemistry Sludge Brazil |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1090-2414 |
| Popis: | Made available in DSpace on 2020-12-12T02:46:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-11-01 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Soil management using fertilizers can modify soil chemical, biochemical and biological properties, including the concentration of trace-elements as cadmium (Cd), chromium (Cd) and nickel (Ni). Bacterial isolates from Cd, Cr, and Ni-contaminated soil were evaluated for some characteristics for their use in bioremediation. Isolates (592) were obtained from soil samples (19) of three areas used in three maize cultivation systems: no-tillage and conventional tillage with the application of mineral fertilizers; minimum tillage with the application of sewage sludge. Four isolates were resistant to Cr3+ (3.06 mmol dm−3) and Cd2+ (2.92 mmol dm−3). One isolate was resistant to the three metals at 0.95 mmol dm−3. All isolates developed in a medium of Cd2+, Cr3+ and Ni2+ at 0.5 mmol dm−3, and removed Cd2+ (17–33%) and Cr6+ (60–70%). They were identified by sequencing of the gene 16S rRNA, as bacteria of the genera Paenibacillus, Burkholderia, Ensifer, and two Cupriavidus. One of the Cupriavidus isolate was able to remove 60% of Cr6+ from the culture medium and showed high indole acetic acid production capacity. We evaluated it in a microbe-plant system that could potentially be deployed in bioremediation by removing toxic metals from contaminated soil. São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Department of Technology São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Department of Rural Engineering Brasil University São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Department of Technology São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Department of Rural Engineering |
| Databáze: | OpenAIRE |
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