Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1111/1574-6941.12090 |
| Titel (primär) | Analysis of structure, function, and activity of a benzene-degrading microbial community |
| Autor | Jechalke, S.; Franchini, A.; Bastida, F.; Bombach, P.; Rosell, M.; Seifert, J.; von Bergen, M.; Vogt, C.; Richnow, H.H. |
| Quelle | FEMS Microbiology Ecology |
| Erscheinungsjahr | 2013 |
| Department | ISOBIO; UBT; PROTEOM |
| Band/Volume | 85 |
| Heft | 1 |
| Seite von | 14 |
| Seite bis | 26 |
| Sprache | englisch |
| Keywords | benzene degradation; compound-specific stable isotope analysis; protein-SIP/RNA-SIP; stable isotope probing |
| UFZ Querschnittsthemen | ru3 |
| Abstract | We identified phylotypes performing distinct functions related to benzene degradation in complex microbial biofilms from an aerated treatment pond containing coconut textile. RNA- and protein-stable isotope probing (SIP) and compound-specific stable isotope analysis were applied to delineate bacteria and predominant pathways involved in the degradation of benzene. In laboratory microcosms, benzene was degraded at rates of ≥ 11 μM per day and per gram coconut textile under oxic conditions. Carbon isotope fractionation with isotopic enrichment factors (ε) of −0.6 to −1‰ and no significant hydrogen isotope fractionation indicated a dihydroxylation reaction for the initial ring attack. The incubation with [13C6]-benzene led to 13CO2 formation accompanied by 13C-labeling of RNA and proteins of the active biomass. Phylogenetic analysis of the 13C-labeled RNA revealed that phylotypes related to Zoogloea, Ferribacterium, Aquabacterium, and Hydrogenophaga within the Betaproteobacteria predominantly assimilated carbon from benzene. Although the phylogenetic classification of identified 13C-labeled proteins was biased by the incomplete metagenome information of public databases, it matched with RNA-SIP results at genus level. The detection of 13C-labeled proteins related to toluene dioxygenase and catechol 2,3-dioxygenase suggests benzene degradation by a dihydroxylation pathway with subsequent meta-cleavage of formed catechol. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=13519 |
| Jechalke, S., Franchini, A., Bastida, F., Bombach, P., Rosell, M., Seifert, J., von Bergen, M., Vogt, C., Richnow, H.H. (2013): Analysis of structure, function, and activity of a benzene-degrading microbial community FEMS Microbiol. Ecol. 85 (1), 14 - 26 10.1111/1574-6941.12090 |
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