title: Transfer of atrazine degradation capability to mineralize aged ¹⁴C-labeled atrazine residues in soils.
abstract: The degradation of environmentally long-term aged (22 years) ¹⁴C-labeled atrazine residues in soil stimulated by inoculation with atrazine-adapted soil from Belgium, the United States (U.S.), and Brazil at two different moisture regimes (50% WHCmax/slurried conditions) was evaluated. Inoculation of the soil containing the aged ¹⁴C-labeled atrazine residues with 5, 50, and 100% (w/w) Belgian, U.S., or Brazilian atrazine-adapted soil increased ¹⁴C-atrazine residue mineralization by a factor of 3.1-13.9, depending upon the amount of atrazine-adapted soil inocula and the moisture conditions. Aged ¹⁴C-atrazine residue mineralization varied between 2 and 8% for Belgian and between 1 and 2% for U.S. and Brazilian soil inoculum at 50% WHCmax but was increased under slurried conditions, accounting for 8-10% (Belgian soil), 2-7% (Brazilian soil), and 3% (American soil). The results show that an increased degradation of long-term aged ¹⁴C-labeled atrazine residues is possible by the transfer of atrazine-adapted soil microflora from different soils and regions to non-adapted soil.
authors.affiliation: IBG-2: Plant Sciences, Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany. n.d.jablonowski@fz-juelich.de
authors.forename: Nicolai David
authors.initials: ND
authors.lastname: Jablonowski
authors.forename: Jason L
authors.initials: JL
authors.lastname: Krutz
authors.forename: Rosane
authors.initials: R
authors.lastname: Martinazzo
authors.forename: Petra
authors.initials: P
authors.lastname: Zajkoska
authors.forename: Georg
authors.initials: G
authors.lastname: Hamacher
authors.forename: Nils
authors.initials: N
authors.lastname: Borchard
authors.forename: Peter
authors.initials: P
authors.lastname: Burauel
mesh_terms: D001280:Atrazine / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism; D002250:Carbon Radioisotopes; D006090:Gram-Negative Bacteria / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism; D006094:Gram-Positive Bacteria / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism; D006540:Herbicides / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism; D007700:Kinetics; D008903:Minerals / Q000032:analysis / Q000737:chemistry / Q000378:metabolism; D010573:Pesticide Residues / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism; D012987:Soil / Q000737:chemistry*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry / Q000378:metabolism
chemical_list: D002250:Carbon Radioisotopes; D006540:Herbicides; D008903:Minerals; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; D001280:Atrazine