Corvini, Philippe
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Corvini, Philippe
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- PublikationBiodegradation of sulfamethoxazole by a bacterial consortium of Achromobacter denitrificans PR1 and Leucobacter sp. GP(Springer, 12/2018) Reis, Ana C.; Cvancarova Småstuen, M.; Liu, Ying; Lenz, Markus; Hettich, Timm; Kolvenbach, Boris; Corvini, Philippe; Nunes, Olga C. [in: Applied Microbiology and Biotechnology]In the last decade, biological degradation and mineralization of antibiotics have been increasingly reported feats of environmental bacteria. The most extensively described example is that of sulfonamides that can be degraded by several members of Actinobacteria and Proteobacteria. Previously, we reported sulfamethoxazole (SMX) degradation and partial mineralization by Achromobacter denitrificans strain PR1, isolated from activated sludge. However, further studies revealed an apparent instability of this metabolic trait in this strain. Here, we investigated this instability and describe the finding of a low-abundance and slow-growing actinobacterium, thriving only in co-culture with strain PR1. This organism, named GP, shared highest 16S rRNA gene sequence similarity (94.6–96.9%) with the type strains of validly described species of the genus Leucobacter. This microbial consortium was found to harbor a homolog to the sulfonamide monooxygenase gene (sadA) also found in other sulfonamide-degrading bacteria. This gene is overexpressed in the presence of the antibiotic, and evidence suggests that it codes for a group D flavin monooxygenase responsible for the ipso-hydroxylation of SMX. Additional side reactions were also detected comprising an NIH shift and a Baeyer–Villiger rearrangement, which indicate an inefficient biological transformation of these antibiotics in the environment. This work contributes to further our knowledge in the degradation of this ubiquitous micropollutant by environmental bacteria.01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationArsenic Mobilization from Historically Contaminated Mining Soils in a Continuously Operated Bioreactor: Implications for Risk Assessment(Taylor & Francis, 2016) Rajpert, Liwia; Kolvenbach, Boris; Ammann, Erik; Hockmann, Kerstin; Nachtegaal, Maarten; Eiche, Elisabeth; Schäffer, Andreas; Corvini, Philippe; Sklodowska, Aleksandra; Lenz, Markus [in: Environmental Science & Technology]Concentrations of soil arsenic (As) in the vicinity of the former Złoty Stok gold mine (Lower Silesia, southwest Poland) exceed 1000 μg g–1 in the area, posing an inherent threat to neighboring bodies of water. This study investigated continuous As mobilization under reducing conditions for more than 3 months. In particular, the capacity of autochthonic microflora that live on natural organic matter as the sole carbon/electron source for mobilizing As was assessed. A biphasic mobilization of As was observed. In the first two months, As mobilization was mainly conferred by Mn dissolution despite the prevalence of Fe (0.1 wt % vs 5.4 for Mn and Fe, respectively) as indicated by multiple regression analysis. Thereafter, the sudden increase in aqueous As[III] (up to 2400 μg L–1) was attributed to an almost quintupling of the autochthonic dissimilatory As-reducing community (quantitative polymerase chain reaction). The aqueous speciation influenced by microbial activity led to a reduction of solid phase As species (X-ray absorption fine structure spectroscopy) and a change in the elemental composition of As hotspots (micro X-ray fluorescence mapping). The depletion of most natural dissolved organic matter and the fact that an extensive mobilization of As[III] occurred after two months raises concerns about the long-term stability of historically As-contaminated sites.01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationBiomineralisierung von Selen: Von Abwasserbehandlung zu Ressourcen-Wiedergewinnung(2015) Lenz, Markus; Kolvenbach, Boris; Corvini, Philippe06 - Präsentation
- PublikationDegradation of sulfonamide antibiotics by Microbacterium sp. strain BR1 - elucidating the downstream pathway(Elsevier, 2015) Ricken, Benjamin; Fellmann, Oliver; Kohler, Hans-Peter E.; Schäffer, Andreas; Corvini, Philippe; Kolvenbach, Boris [in: New Biotechnology]01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationElucidating the genetic basis for sulfonamide degradation in isolates with diverse phylogenetic background(2015) Kolvenbach, Boris; Ricken, Benjamin; Corvini, Philippe; Reis, Ana C.; Nunes, Olga C.; Manaia, Célia M.; Strnad, Hynek; Vlcek, Cestmir06 - Präsentation
- PublikationIpso-substitution--the hidden gate to xenobiotic degradation pathways(Elsevier, 2015) Ricken, Benjamin; Kolvenbach, Boris; Corvini, Philippe [in: Current Opinion in Biotechnology]01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationEnhanced Transformation of Tetrabromobisphenol A by Nitrifiers in Nitrifying Activated Sludge(American Chemical Society, 2015) Li, Fangjie; Jiang, Bingqi; Nastold, Peter; Kolvenbach, Boris; Chen, Jianqiu; Wang, Lianhong; Guo, Hongyan; Corvini, Philippe; Ji, Rong [in: Environmental Science & Technology]01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationInsights into the sulfonamide degrading protein complex(2015) Ricken, Benjamin; Bucher, Andreas; Mariossi, Andrea; Fellmann, Oliver; Adaixo, Ricardo; Schäffer, Andreas; Corvini, Philippe; Kolvenbach, Boris; Kohler, Hans-Peter E.; Leu, Cedric06 - Präsentation
- PublikationNew insights into biological sulfonamide degradation(2015) Kolvenbach, Boris; Ricken, Benjamin; Fellmann, Oliver; Kohler, Hans-Peter E.; Schäffer, Andreas; Corvini, Philippe06 - Präsentation
- PublikationEvaluating the potential of bacterial biodegradation of sulfonamides to improve wastewater processing(2015) Kolvenbach, Boris; Ricken, Benjamin; Corvini, Philippe; Reis, Patricia J. M.; Reis, Ana C.; Manaia, Célia M.; Nunes, Olga C.06 - Präsentation