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Registro Completo |
Biblioteca(s): |
Embrapa Suínos e Aves. |
Data corrente: |
18/12/2017 |
Data da última atualização: |
18/06/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
HE, Y.; MATHIEU, J.; YANG, Y.; YU, P.; SILVA, M. L. B. da; ALVAREZ, P. J. J. |
Afiliação: |
YA HE, Rice University Houston - Texas; JACQUES MATHIEU, Rice University Houston - Texas; YU YANG, Rice University Houston - Texas; PINGFENG YU, Rice University Houston - Texas; MARCIO LUIS BUSI DA SILVA, CNPSA; PEDRO J. J. ALVAREZ, Rice University Houston - Texas. |
Título: |
Dioxane biodegradation by mycobacterium dioxanotrophicus pH-06 is associated with a group-6 soluble di-iron monooxygenase. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Environmental Science & Technology, v. 4, n. 11, p. 494-499, 2017. |
DOI: |
10.1021/acs.estlett.7b00456 |
Idioma: |
Inglês |
Conteúdo: |
ABSTRACT: 1,4-Dioxane (dioxane) is a groundwater contaminant of emerging concern for which bioremediation may be a promising strategy. Several bacterial strains can metabolize dioxane or degrade it cometabolically. However, the molecular basis of dioxane biodegradation is only partially understood, and the gene coding for dioxane/ tetrahydrofuran (THF) monooxygenase in Pseudonocardia dioxanivorans CB1190 is the only well-characterized catabolic gene. Here, we identify a novel group-6 propane monooxygenase gene cluster (prmABCD) in Mycobacterium dioxanotrophicus PH-06, which is a bacterium with superior dioxane degradation kinetics compared with CB1190. Whole genome sequencing of PH-06 revealed the existence of a single soluble di-iron monooxygenase (SDIMO). RNA sequencing and reverse transcription quantitative PCR (RT-qPCR) subsequently confirmed that all four components of this gene cluster are upregulated when PH-06 is grown on dioxane compared with growth on acetate or glucose as negative controls. This first characterization of a group-6 SDIMO associated with dioxane biodegradation suggests that dioxane-degrading genes may be more diverse than previously appreciated. A primer/probe set designed to target the large hydroxylase subunit of this gene cluster exhibited high selectivity (no false positives) and high sensitivity (detection limit = 3000−4000 gene copies/mL culture), which may be useful to help assess the presence of dioxane degraders at contaminated sites and minimize false negatives. MenosABSTRACT: 1,4-Dioxane (dioxane) is a groundwater contaminant of emerging concern for which bioremediation may be a promising strategy. Several bacterial strains can metabolize dioxane or degrade it cometabolically. However, the molecular basis of dioxane biodegradation is only partially understood, and the gene coding for dioxane/ tetrahydrofuran (THF) monooxygenase in Pseudonocardia dioxanivorans CB1190 is the only well-characterized catabolic gene. Here, we identify a novel group-6 propane monooxygenase gene cluster (prmABCD) in Mycobacterium dioxanotrophicus PH-06, which is a bacterium with superior dioxane degradation kinetics compared with CB1190. Whole genome sequencing of PH-06 revealed the existence of a single soluble di-iron monooxygenase (SDIMO). RNA sequencing and reverse transcription quantitative PCR (RT-qPCR) subsequently confirmed that all four components of this gene cluster are upregulated when PH-06 is grown on dioxane compared with growth on acetate or glucose as negative controls. This first characterization of a group-6 SDIMO associated with dioxane biodegradation suggests that dioxane-degrading genes may be more diverse than previously appreciated. A primer/probe set designed to target the large hydroxylase subunit of this gene cluster exhibited high selectivity (no false positives) and high sensitivity (detection limit = 3000−4000 gene copies/mL culture), which may be useful to help assess the presence of dioxane degraders at contaminated sites ... Mostrar Tudo |
Palavras-Chave: |
Biodegradação de dioxano; Microbactéria. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/198674/1/marcio-busi.pdf
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Marc: |
LEADER 02224naa a2200217 a 4500 001 2082755 005 2019-06-18 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1021/acs.estlett.7b00456$2DOI 100 1 $aHE, Y. 245 $aDioxane biodegradation by mycobacterium dioxanotrophicus pH-06 is associated with a group-6 soluble di-iron monooxygenase.$h[electronic resource] 260 $c2017 520 $aABSTRACT: 1,4-Dioxane (dioxane) is a groundwater contaminant of emerging concern for which bioremediation may be a promising strategy. Several bacterial strains can metabolize dioxane or degrade it cometabolically. However, the molecular basis of dioxane biodegradation is only partially understood, and the gene coding for dioxane/ tetrahydrofuran (THF) monooxygenase in Pseudonocardia dioxanivorans CB1190 is the only well-characterized catabolic gene. Here, we identify a novel group-6 propane monooxygenase gene cluster (prmABCD) in Mycobacterium dioxanotrophicus PH-06, which is a bacterium with superior dioxane degradation kinetics compared with CB1190. Whole genome sequencing of PH-06 revealed the existence of a single soluble di-iron monooxygenase (SDIMO). RNA sequencing and reverse transcription quantitative PCR (RT-qPCR) subsequently confirmed that all four components of this gene cluster are upregulated when PH-06 is grown on dioxane compared with growth on acetate or glucose as negative controls. This first characterization of a group-6 SDIMO associated with dioxane biodegradation suggests that dioxane-degrading genes may be more diverse than previously appreciated. A primer/probe set designed to target the large hydroxylase subunit of this gene cluster exhibited high selectivity (no false positives) and high sensitivity (detection limit = 3000−4000 gene copies/mL culture), which may be useful to help assess the presence of dioxane degraders at contaminated sites and minimize false negatives. 653 $aBiodegradação de dioxano 653 $aMicrobactéria 700 1 $aMATHIEU, J. 700 1 $aYANG, Y. 700 1 $aYU, P. 700 1 $aSILVA, M. L. B. da 700 1 $aALVAREZ, P. J. J. 773 $tEnvironmental Science & Technology$gv. 4, n. 11, p. 494-499, 2017.
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1. | | HE, Y.; MATHIEU, J.; YANG, Y.; YU, P.; SILVA, M. L. B. da; ALVAREZ, P. J. J. Dioxane biodegradation by mycobacterium dioxanotrophicus pH-06 is associated with a group-6 soluble di-iron monooxygenase. Environmental Science & Technology, v. 4, n. 11, p. 494-499, 2017.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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