1
|
Nazari MT, Simon V, Machado BS, Crestani L, Marchezi G, Concolato G, Ferrari V, Colla LM, Piccin JS. Rhodococcus: A promising genus of actinomycetes for the bioremediation of organic and inorganic contaminants. J Environ Manage 2022; 323:116220. [PMID: 36116255 DOI: 10.1016/j.jenvman.2022.116220] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/16/2022] [Accepted: 09/06/2022] [Indexed: 06/15/2023]
Abstract
Rhodococcus is a genus of actinomycetes that has been explored by the scientific community for different purposes, especially for bioremediation uses. However, the mechanisms governing Rhodococcus-mediated bioremediation processes are far from being fully elucidated. In this sense, this work aimed to compile the recent advances in the use of Rhodococcus for the bioremediation of organic and inorganic contaminants present in different environmental compartments. We reviewed the bioremediation capacity and mechanisms of Rhodococcus spp. in the treatment of polycyclic aromatic hydrocarbons, phenolic substances, emerging contaminants, heavy metals, and dyes given their human health risks and environmental concern. Different bioremediation techniques were discussed, including experimental conditions, treatment efficiencies, mechanisms, and degradation pathways. The use of Rhodococcus strains in the bioremediation of several compounds is a promising approach due to their features, primarily the presence of appropriate enzyme systems, which result in high decontamination efficiencies; but that vary according to experimental conditions. Besides, the genus Rhodococcus contains a small number of opportunistic species and pathogens, representing an advantage from the point of view of safety. Advances in analytical detection techniques and Molecular Biology have been collaborating to improve the understanding of the mechanisms and pathways involved in bioremediation processes. In the context of using Rhodococcus spp. as bioremediation agents, there is a need for more studies that 1) evaluate the role of these actinomycetes on a pilot and field scale; 2) use genetic engineering tools and consortia with other microorganisms to improve the bioremediation efficiency; and 3) isolate new Rhodococcus strains from environments with extreme and/or contaminated conditions aiming to explore their adaptive capabilities for bioremediation purposes.
Collapse
Affiliation(s)
- Mateus Torres Nazari
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Viviane Simon
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Bruna Strieder Machado
- Faculty of Engineering and Architecture, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Larissa Crestani
- Graduate Program in Chemical Engineering (PPGEQ), Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Giovana Marchezi
- Faculty of Engineering and Architecture, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Gustavo Concolato
- Faculty of Engineering and Architecture, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Valdecir Ferrari
- Graduate Program in Mining, Metallurgical and Materials Engineering (PPGE3M), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Luciane Maria Colla
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil.
| | - Jeferson Steffanello Piccin
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| |
Collapse
|
2
|
Nazari MT, Machado BS, Marchezi G, Crestani L, Ferrari V, Colla LM, Piccin JS. Use of soil actinomycetes for pharmaceutical, food, agricultural, and environmental purposes. 3 Biotech 2022; 12:232. [PMID: 35996673 PMCID: PMC9391553 DOI: 10.1007/s13205-022-03307-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 08/10/2022] [Indexed: 11/25/2022] Open
Abstract
In this article, we reviewed the international scientific production of the last years on actinomycetes isolated from soil aiming to report recent advances in using these microorganisms for different applications. The most promising genera, isolation conditions and procedures, pH, temperature, and NaCl tolerance of these bacteria were reported. Based on the content analysis of the articles, most studies have focused on the isolation and taxonomic description of new species of actinomycetes. Regarding the applications, the antimicrobial potential (antibacterial and antifungal) prevailed among the articles, followed by the production of enzymes (cellulases and chitinases, etc.), agricultural uses (plant growth promotion and phytopathogen control), bioremediation (organic and inorganic contaminants), among others. Furthermore, a wide range of growth capacity was verified, including temperatures from 4 to 60 °C (optimum: 28 °C), pH from 3 to 13 (optimum: 7), and NaCl tolerance up to 32% (optimum: 0-1%), which evidence a great tolerance for actinomycetes cultivation. Streptomyces was the genus with the highest incidence among the soil actinomycetes and the most exploited for different uses. Besides, the interest in isolating actinomycetes from soils in extreme environments (Antarctica and deserts, for example) is growing to explore the adaptive capacities of new strains and the secondary metabolites produced by these microorganisms for different industrial interests, especially for pharmaceutical, food, agricultural, and environmental purposes.
Collapse
Affiliation(s)
- Mateus Torres Nazari
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo, Campus I, L1 Building. BR 285, Bairro São José, Passo Fundo, RS CEP: 99052-900 - Zip Code 611 Brazil
| | - Bruna Strieder Machado
- Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS Brazil
| | - Giovana Marchezi
- Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS Brazil
| | - Larissa Crestani
- Graduate Program Chemical Engineering (PPGEQ), Federal University of Santa Maria (UFSM), Santa Maria, RS Brazil
| | - Valdecir Ferrari
- Graduate Program in Mining, Metallurgical and Materials Engineering (PPGE3M), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS Brazil
| | - Luciane Maria Colla
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo, Campus I, L1 Building. BR 285, Bairro São José, Passo Fundo, RS CEP: 99052-900 - Zip Code 611 Brazil
| | - Jeferson Steffanello Piccin
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo, Campus I, L1 Building. BR 285, Bairro São José, Passo Fundo, RS CEP: 99052-900 - Zip Code 611 Brazil
| |
Collapse
|
3
|
Decesaro A, Rempel A, Machado TS, Cappellaro ÂC, Machado BS, Cechin I, Thomé A, Colla LM. Bacterial biosurfactant increases ex situ biodiesel bioremediation in clayey soil. Biodegradation 2021; 32:389-401. [PMID: 33864197 DOI: 10.1007/s10532-021-09944-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 04/12/2021] [Indexed: 10/21/2022]
Abstract
The contamination of soils by oily compounds has several environmental impacts, which can be reversed through bioremediation, using biosurfactants as auxiliaries in the biodegradation process. In this study, we aimed to perform ex situ bioremediation of biodiesel-contaminated soil using biosurfactants produced by Bacillus methylotrophicus. A crude biosurfactant was produced in a whey-based culture medium supplemented with nutrients and was later added to biodiesel-contaminated clayey soil. The produced lipopeptide biosurfactant could reduce the surface tension of the fermentation broth to 30.2 mN/m. An increase in the microbial population was observed in the contaminated soil; this finding can be corroborated by the finding of increased CO2 release over days of bioremediation. Compared with natural attenuation, the addition of a lower concentration of the biosurfactant (0.5% w/w in relation to the mass of diesel oil) to the soil increased biodiesel removal by about 16% after 90 days. The added biosurfactant did not affect the retention of the contaminant in the soil, which is an important factor to be considered when applying in situ bioremediation technologies.
Collapse
Affiliation(s)
- Andressa Decesaro
- Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, Campus I, Building L1, BR 285, km 171, Neighborhood São José, Mailbox 611, Passo Fundo, RS, CEP: 99052-900, Brazil
| | - Alan Rempel
- Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, Campus I, Building L1, BR 285, km 171, Neighborhood São José, Mailbox 611, Passo Fundo, RS, CEP: 99052-900, Brazil
| | - Thaís Strieder Machado
- Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, Campus I, Building L1, BR 285, km 171, Neighborhood São José, Mailbox 611, Passo Fundo, RS, CEP: 99052-900, Brazil
| | - Ângela Carolina Cappellaro
- Environmental Engineering Course, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, km 171, Passo Fundo, RS, Brazil
| | - Bruna Strieder Machado
- Chemical Engineering Course, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, km 171, Passo Fundo, RS, Brazil
| | - Iziquiel Cechin
- Environmental Engineering Course, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, km 171, Passo Fundo, RS, Brazil
| | - Antônio Thomé
- Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, Campus I, Building L1, BR 285, km 171, Neighborhood São José, Mailbox 611, Passo Fundo, RS, CEP: 99052-900, Brazil
| | - Luciane Maria Colla
- Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, Campus I, Building L1, BR 285, km 171, Neighborhood São José, Mailbox 611, Passo Fundo, RS, CEP: 99052-900, Brazil.
| |
Collapse
|
4
|
Machado TS, Decesaro A, Cappellaro ÂC, Machado BS, van Schaik Reginato K, Reinehr CO, Thomé A, Colla LM. Effects of homemade biosurfactant from Bacillus methylotrophicus on bioremediation efficiency of a clay soil contaminated with diesel oil. Ecotoxicol Environ Saf 2020; 201:110798. [PMID: 32526591 DOI: 10.1016/j.ecoenv.2020.110798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/19/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
Despite constant progress in the understanding of the mechanisms related to the effects of biosurfactants in the bioremediation processes of oily residues, the possibility of antagonist effects on microbial growth and the production in situ of these compounds must be elucidated. The aims of this work were a) to evaluate the effects of the addition of a homemade biosurfactant of Bacillus methylotrophicus on the microbial count in soil in order to determine the possibility of inhibitory effects, and b) to accomplish biostimulation using media prepared with whey and bioaugmentation with B. methylotrophicus, analyzing the effects on the bioremediation of diesel oil and evidencing the in situ production of biosurfactants through effects on surface tension. The homemade bacterial biosurfactant did not present inhibitory effects acting as a biostimulant until 4000 mg biosurfactant/kg of soil. The biostimulation and bioaugmentation presented similar better results (p > 0.05) with the degradation of oil (~60%) than natural attenuation due to the low quantities of biostimulants added. For bioaugmentated and biostimulated soils, a decrease of surface tension between 30 and 60 days was observed, indicating the production of tensoactives in the soil, which was not observed in natural attenuation or a control treatment.
Collapse
Affiliation(s)
- Thaís Strieder Machado
- Graduate Program in Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS, Brazil.
| | - Andressa Decesaro
- Graduate Program in Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS, Brazil.
| | - Ângela Carolina Cappellaro
- Undergraduate Program in Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS, Brazil.
| | - Bruna Strieder Machado
- Undergraduate Program in Chemical Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS, Brazil.
| | - Kimberly van Schaik Reginato
- Undergraduate Program in Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS, Brazil.
| | - Christian Oliveira Reinehr
- Graduate Program in Food Science and Technology, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS, Brazil.
| | - Antônio Thomé
- Graduate Program in Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS, Brazil.
| | - Luciane Maria Colla
- Graduate Program in Civil and Environmental Engineering, Faculty of Engineering and Architecture, University of Passo Fundo, BR 285, Passo Fundo, RS, Brazil.
| |
Collapse
|