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Pernía B, Urbina H, González M, Sena L, Villasana Y, Naranjo-Briceño L. Trametes coccinea IDEA, un hongo súper productor de lacasa aislado de un lago natural de asfalto: Tolerancia y biotransformación de hidrocarburos policíclicos aromáticos. BIONATURA 2021. [DOI: 10.21931/rb/2021.06.03.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Los hidrocarburos policíclicos aromáticos (HPAs) son compuestos tóxicos que no se degradan fácilmente bajo condiciones naturales tales como fenómenos físicos (fotooxidación, volatilización), químicos (intercambio iónico, complejación, transformación) y biológicos (degradación por microorganismos autóctonos) que además, dependen de la temperatura, humedad y niveles de oxígeno. El objetivo del presente trabajo fue aislar, identificar y caracterizar fenotípicamente hongos hidrocarbono clásticos de ambientes extremos que sean capaces de tolerar HPAs, tales como Trametes coccinea IDEA, que se aisló del Lago de asfalto natural de Guanoco en Venezuela. A fin de estudiar su tolerancia a los HPAs, el hongo se expuso a diferentes concentraciones de naftaleno, fenantreno y pireno (0, 2.5, 25, 50, 100, 200, 400, 800 y 1600 mg/L). Posteriormente, en ensayo en medio de cultivo líquido, se procedió a estudiar el efecto de los HPAs sobre la actividad de enzimas del sistema enzimático de degradación de lignina (SEDL), así como sobre la posible variación en los niveles de toxicidad empleando Lactuca sativa como bioindicador. Los resultados mostraron una mayor tolerancia al pireno, seguido por el naftaleno y fenantreno. Se observó una fuerte inducción de la actividad lacasa en presencia de naftaleno (167.96 U/mgP) y pireno (124.89 U/mgP) con respecto al control, mientras que con fenantreno se obtuvo una baja actividad (88.67 U / mgP). De manera interesante, se evidenció una generación de sub-productos más tóxicos cuando el naftaleno y el fenantreno fueron biotratados por el hongo, mientras que el nivel de toxicidad del pireno disminuyó significativamente. T. coccinea IDEA tiene un alto potencial para ser utilizado en estrategias de biorremediación de hidrocarburos, las cuales deben ser monitoreadas mediante análisis ecotoxicológicos para detectar posibles variaciones de toxicidad de los productos parcialmente biotransformados.
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Affiliation(s)
- Beatriz Pernía
- Área de Energía y Ambiente, Fundación Instituto de Estudios Avanzados (IDEA), Carretera Nacional Baruta-Hoyo de la Puerta, Valle de Sartenejas, CP, Caracas, Venezuela nstituto de Investigaciones de Recursos Naturales, Facultad de Ciencias Naturales, Universidad de Guayaquil, CP, Guayaquil, Ecuador
| | - Hector Urbina
- Área de Energía y Ambiente, Fundación Instituto de Estudios Avanzados (IDEA), Carretera Nacional Baruta-Hoyo de la Puerta, Valle de Sartenejas, CP, Caracas, Venezuela Division of Plant Industry, Florida Department of Agriculture, Gainesville, FL, USA
| | - Meralys González
- Área de Energía y Ambiente, Fundación Instituto de Estudios Avanzados (IDEA), Carretera Nacional Baruta-Hoyo de la Puerta, Valle de Sartenejas, CP, Caracas, Venezuela
| | - Lucia Sena
- rea de Energía y Ambiente, Fundación Instituto de Estudios Avanzados (IDEA), Carretera Nacional Baruta-Hoyo de la Puerta, Valle de Sartenejas, CP, Caracas, Venezuela
| | - Yanet Villasana
- Grupo Biomass to Bioresources, Universidad Regional Amazónica Ikiam, CP, Tena, Ecuador
| | - Leopoldo Naranjo-Briceño
- Área de Energía y Ambiente, Fundación Instituto de Estudios Avanzados (IDEA), Carretera Nacional Baruta-Hoyo de la Puerta, Valle de Sartenejas, CP, Caracas, Venezuela Grupo de Microbiología Aplicada, Universidad Regional Amazónica Ikiam, CP, Tena, Ecuador
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Hernández-López EL, Perezgasga L, Huerta-Saquero A, Mouriño-Pérez R, Vazquez-Duhalt R. Biotransformation of petroleum asphaltenes and high molecular weight polycyclic aromatic hydrocarbons by Neosartorya fischeri. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:10773-10784. [PMID: 26893177 DOI: 10.1007/s11356-016-6277-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 02/11/2016] [Indexed: 06/05/2023]
Abstract
Neosartorya fischeri, an Aspergillaceae fungus, was evaluated in its capacity to transform high molecular weight polycyclic aromatics hydrocarbons (HMW-PAHs) and the recalcitrant fraction of petroleum, the asphaltenes. N. fischeri was able to grow in these compounds as sole carbon source. Coronene, benzo(g,h,i)perylene, and indeno(1,2,3-c,d)pyrene, together with the asphaltenes, were assayed for fungal biotransformation. The transformation of the asphaltenes and HMW-PAHs was confirmed by reverse-phase high-performance liquid chromatography (HPLC), nano-LC mass spectrometry, and IR spectrometry. The formation of hydroxy and ketones groups on the PAH molecules suggest a biotransformation mediated by monooxygenases such as cytochrome P450 system (CYP). A comparative microarray with the complete genome from N. fischeri showed three CYP monooxygenases and one flavin monooxygenase genes upregulated. These findings, together with the internalization of aromatic substrates into fungal cells and the microsomal transformation of HMW-PAHs, strongly support the role of CYPs in the oxidation of these recalcitrant compounds.
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Affiliation(s)
| | - Lucia Perezgasga
- Instituto de Biotecnología, UNAM, Av. Universidad 2001, Cuernavaca, Morelos, Mexico
| | - Alejandro Huerta-Saquero
- Centro de Nanociencias y Nanotecnología, UNAM, Km 107 carretera Tijuana-Ensenada, Ensenada, Baja California, Mexico
| | - Rosa Mouriño-Pérez
- Centro de Investigaciones Científicas y de Educación Superior de Ensenada, Ensenada, Baja California, Mexico
| | - Rafael Vazquez-Duhalt
- Centro de Nanociencias y Nanotecnología, UNAM, Km 107 carretera Tijuana-Ensenada, Ensenada, Baja California, Mexico.
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Uribe‐Alvarez C, Ayala M, Perezgasga L, Naranjo L, Urbina H, Vazquez‐Duhalt R. First evidence of mineralization of petroleum asphaltenes by a strain of Neosartorya fischeri. Microb Biotechnol 2011; 4:663-72. [PMID: 21624102 PMCID: PMC3819015 DOI: 10.1111/j.1751-7915.2011.00269.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 04/03/2011] [Accepted: 04/04/2011] [Indexed: 11/30/2022] Open
Abstract
A fungal strain isolated from a microbial consortium growing in a natural asphalt lake is able to grow in purified asphaltenes as the only source of carbon and energy. The asphaltenes were rigorously purified in order to avoid contamination from other petroleum fractions. In addition, most of petroporphyrins were removed. The 18S rRNA and β-tubulin genomic sequences, as well as some morphologic characteristics, indicate that the isolate is Neosartorya fischeri. After 11 weeks of growth, the fungus is able to metabolize 15.5% of the asphaltenic carbon, including 13.2% transformed to CO(2) . In a medium containing asphaltenes as the sole source of carbon and energy, the fungal isolate produces extracellular laccase activity, which is not detected when the fungus grow in a rich medium. The results obtained in this work clearly demonstrate that there are microorganisms able to metabolize and mineralize asphaltenes, which is considered the most recalcitrant petroleum fraction.
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Affiliation(s)
- Cristina Uribe‐Alvarez
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Mor. 62250 México
| | - Marcela Ayala
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Mor. 62250 México
| | - Lucia Perezgasga
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Mor. 62250 México
| | - Leopoldo Naranjo
- Dirección de Área de Energía y Ambiente, Fundación Instituto de Estudios Avanzados (IDEA), Sartenejas, Caracas 1080, Venezuela
| | - Héctor Urbina
- Dirección de Área de Energía y Ambiente, Fundación Instituto de Estudios Avanzados (IDEA), Sartenejas, Caracas 1080, Venezuela
| | - Rafael Vazquez‐Duhalt
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Mor. 62250 México
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Sutherland JB, Heinze TM, Schnackenberg LK, Freeman JP, Williams AJ. Biotransformation of quinazoline and phthalazine by Aspergillus niger. J Biosci Bioeng 2011; 111:333-5. [DOI: 10.1016/j.jbiosc.2010.11.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Revised: 11/17/2010] [Accepted: 11/22/2010] [Indexed: 11/27/2022]
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Cotillon AC, Doostzadeh J, Morfin R. The inducible and cytochrome P450-containing dehydroepiandrosterone 7alpha-hydroxylating enzyme system of Fusarium moniliforme. J Steroid Biochem Mol Biol 1997; 62:467-75. [PMID: 9449251 DOI: 10.1016/s0960-0760(97)00060-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
7Alpha-hydroxylation of DHEA by Fusarium moniliforme was investigated with regard to inducibility and characterization of the responsible enzyme system. Using GC/MS, the 7-hydroxylated metabolites of DHEA produced after biotransformation by Fusarium moniliforme mycelia were identified. The strain of Fusarium moniliforme hydroxylated DHEA predominantly at the 7alpha-position, with minor hydroxylation occurring at the 7beta-position. Constitutive 7alpha-hydroxylation activity was low, but DHEA induced the enzyme complex responsible for 7alpha-hydroxylation via an increase in protein synthesis. DHEA 7alpha-hydroxylase was found to be mainly microsomal, and the best production yields of 7alpha-hydroxy-DHEA (28.5 +/- 3.51 pmol/min/mg protein) were obtained with microsomes prepared from 18-h-induced mycelia. Kinetic parameters (KM=1.18 +/- 0.035 microM and Vmax=909 +/- 27 pmol/min/mg protein) were determined. Carbon monoxide inhibited 7alpha-hydroxylation of DHEA by microsomes of Fusarium moniliforme. Also, exposure of mycelia to DHEA increased microsomal P450 content. These results demonstrated that: (i) DHEA is 7alpha-hydroxylated by microsomes of Fusarium moniliforme; (ii) DHEA induces Fusarium moniliforme 7alpha-hydroxylase; (iii) this enzyme complex contains a cytochrome P450.
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Affiliation(s)
- A C Cotillon
- Laboratoire de Biotechnologie, Conservatoire National des Arts et Métiers, Paris, France
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