title: Metabolism of diphenylurea by a Marinobacter sp. isolated from a contaminated ephemeral stream bed in the Negev Desert.
abstract: A moderate halophilic Marinobacter sp. (designated strain DPUZ) able to metabolize 1,3-diphenylurea (DPU) was isolated from a contaminated ephemeral desert stream bed near an industrial complex in the northern part of the Negev Desert (Israel). Metabolism of DPU was accompanied by a transient accumulation of a metabolite identified as aniline using gas chromatography-mass spectrometry, thus indicating a metabolic pathway involving cleavage of the urea bridge between the phenyl structures. Aniline was further degraded without detection of other metabolites suggesting a complete degradation. Strain DPUZ grows at NaCl concentrations between 0.2 and 2.6 M with an optimum at 0.51 M. It grows at a temperature range between 20 and 40 degrees C with an optimum at 35 degrees C. This is the first study on bacterial metabolism of DPU.
authors.affiliation: Department of Geochemistry, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Øster Voldgade 10, Denmark. srs@geus.dk
authors.forename: Sebastian R
authors.initials: SR
authors.lastname: Sørensen
authors.forename: Ziv
authors.initials: Z
authors.lastname: Arbeli
authors.forename: Jens
authors.initials: J
authors.lastname: Aamand
authors.forename: Zeev
authors.initials: Z
authors.lastname: Ronen
mesh_terms: D001673:Biodegradation, Environmental; D002224:Carbanilides / Q000737:chemistry / Q000378:metabolism*; D020563:Gammaproteobacteria / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism*; D019015:Geologic Sediments
chemical_list: D002224:Carbanilides