Biodegradation of the Polycyclic Aromatic Hydrocarbon Fluoranthene by Fungi Strains from a Brazilian Tropical Peat

Autor(es)

Garcia, Anuska C. F. S. ^[1] ; Birolli, Willian G. ^{[2, 3]} ; Araujo, Bruno R. ^[1] ; Marques, Carla G. ^[4] ; Barbosa-Junior, Antonio M. ^[5] ; Diniz, Leandro E. C. ^[6] ; Porto, Andre L. M. ^[2] ; Romao, Luciane P. C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sergipe, Lab Estudos Mat Organ Nat, Dept Quim, BR-49100000 Sao Cristovao, SE - Brazil

^[2] Univ Sao Paulo, Inst Quim Sao Carlos, Lab Quim Organ & Biocatalise, BR-13563120 Sao Carlos, SP - Brazil

^[3] Univ Fed Sao Carlos, Ctr Ciencias Exatas & Tecnol, Via Washington Luiz, Km 235, CP 676, BR-13565905 Sao Carlos, SP - Brazil

^[4] Univ Fed Sao Carlos, Lab Biodiversidade Mol & Conservacao, Dept Genet & Evolucao, BR-13565905 Sao Carlos, SP - Brazil

^[5] Univ Fed Sergipe, Dept Morfol, Lab Microbiol Aplicada, BR-49100000 Sao Cristovao, SE - Brazil

^[6] Empresa Brasileira Pesquisa Agr, Lab Biol Mol, BR-49025040 Aracaju, SE - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 32, n. 9, p. 1874-1883, SEP 2021.
• Citações Web of Science: 0

Resumo

Polycyclic aromatic hydrocarbons (PAHs) are an important environmental issue and the identification of new biocatalysts for an efficient biodegradation of these compounds is essential for bioremediation. Therefore, fungi strains isolated for the first time from a tropical peat at Santo Amaro das Brotas (Brazil) were studied for fluoranthene biodegradation. Fusarium sp. AC-7, Penicillium sp. AC-1 and Penicillium sp. AC-6 were isolated using fluoranthene as sole carbon source. All strains were tested for biodegradation of 100 mg L−1 fluoranthene during 14 and 28 days. After 28 days of biodegradation, 64 ± 3, 60 ± 4 and 51 ± 2% biodegradation was observed for Penicillium sp. AC-1, Penicillium sp. AC-6 and Fusarium sp. AC-7, respectively. Analysis of the obtained compounds enabled the identification of four metabolites, which were common to the three employed strains: anthrone, anthraquinone, 9-methoxyanthracene and cyclopropa[1]phenanthrene. It is important to note that control experiments were performed. The obtained results clearly demonstrated the efficiency of tropical peat fungi in the transformation of fluoranthene. These findings showed the potential of tropical peats for isolation of fungi and indicated that these strains can be applied for bioremediation processes of areas contaminated with fluoranthene and other PAHs. (AU)

• Processo FAPESP: 16/20155-7 - Reações de aminólise e de resolução cinética por lipases e biodegradação de agroquímicos por microrganismos
• Beneficiário: Andre Luiz Meleiro Porto
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/07654-2 - Reação de Biginelli (síntese e resolução quimioezimática) e biotransformação de esteroides por microrganismos
• Beneficiário: Andre Luiz Meleiro Porto
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/19721-0 - Emprego de microrganismos ambientais na biodegradação de agrotóxicos estrobilurinicos e piretróides amplamente utilizados na agricultura brasileira
• Beneficiário: Willian Garcia Birolli
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado