Biodegradation of atrazine under denitrifying conditions
@article{Crawford1998BiodegradationOA,
title={Biodegradation of atrazine under denitrifying conditions},
author={J. J. Crawford and Gerald K. Sims and Richard Lesley Mulvaney and Mark Radosevich},
journal={Applied Microbiology and Biotechnology},
year={1998},
volume={49},
pages={618-623}
}Abstract Anaerobic biodegradation of atrazine by the bacterial isolate M91-3 was characterized with respect to mineralization, metabolite formation, and denitrification. The ability of the isolate to enhance atrazine biodegradation in anaerobic sediment slurries was also investigated. The organism utilized atrazine as its sole source of carbon and nitrogen under anoxic conditions in fixed-film (glass beads) batch column systems. Results of HPLC and TLC radiochromatography suggested that…
73 Citations
Degradation of atrazine by microbial consortium in an anaerobic submerged biological filter.
- EngineeringJournal of water and health
- 2014
The results of modeling showed that the Stover-Kincannon model had desirable fitness (R² > 99%) in loading ATZ in this biofilter, which shows that ATZ removal in this system was due to biodegradation.
A comparison of three atrazine-degrading bacteria for soil bioremediation
- Biology, EngineeringBiology and Fertility of Soils
- 2001
Important differences in the ability of atrazine-hydrolyzing bacteria to degrade this compound in soil are revealed, and it is suggested that the ability to utilize atrazin as a carbon source is important to establish "enhanced degradation" by ecologically meaningful inoculum densities.
Kinetics of atrazine biodegradation by suspended and immobilized mixed microbial cells cultivated in continuous systems.
- Engineering, Biology
- 2009
Kinetic results showed that for similar working conditions higher RV, ATZ values and reduced amounts of degradation byproducts of recalcitrant organic compounds could be expected with multi-stage biofilm reactors.
Biodegradation of Atrazine by Bacteria Isolated from Lotic Water
- Chemistry
- 2015
Background: The persistence of toxic herbicides in water and soil has been considered to be potential environmental concern. As atrazine is still used in Nigeria as a major herbicide, a continuous…
Bacterial degradation of atrazine in redox potential gradients in fixed-film sand columns.
- Engineering
- 2000
The purpose of this study was to assess the biodegradation of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine] under different redox conditions in the presence and absence of an…
Dissipation of atrazine, enrofloxacin, and sulfamethazine in wood chip bioreactors and impact on denitrification.
- Biology, EngineeringJournal of environmental quality
- 2011
The denitrifier MPN and copy number in sulfamethazine- and enrofloxacin-treated microcosms were less than the control within the first 5 d after chemical addition, whereas the denitrification potentials were not affected, indicating that acclimation of the den itrifier population to the antibiotic or reduced bioavailability over time allowed recovery of the Denitrifiers.
Biodegradation of atrazine from wastewater using moving bed biofilm reactor under nitrate-reducing conditions: A kinetic study.
- EngineeringJournal of environmental management
- 2018
Biodegradation of xenobiotics by anaerobic bacteria
- Engineering, BiologyApplied Microbiology and Biotechnology
- 2004
For persistent compounds including polychlorinated biphenyls, dioxins, and DDT, anaerobic processes are slow for remedial application, but can be a significant long-term avenue for natural attenuation.
Biodegradability of Atrazine, Cyanazine and Dicamba under methanogenic condition in three soils of China.
- Chemistry, MedicineChemosphere
- 2003
Isolation and functional analysis of denitrifiers in an aquifer with high potential for denitrification.
- BiologySystematic and applied microbiology
- 2013
References
SHOWING 1-10 OF 23 REFERENCES
Degradation and mineralization of atrazine by a soil bacterial isolate.
- BiologyApplied and environmental microbiology
- 1995
This is the first report of a pure bacterial isolate with the ability to cleave the s-triazine ring structure of atrazine, and it was concluded that this bacterium was capable of dealkylation, dechlorination, and deamination in addition to ring cleavage.
Fate and enhancement of atrazine biotransformation in anaerobic wetland sediment
- Environmental Science
- 1996
Rapid mineralization of the herbicide atrazine in alluvial sediments and enrichment cultures
- Environmental Science
- 1995
The fate of atrazine in sediment sampled from two agricultural watersheds in the Great Lakes basin of southern Ontario was studied in laboratory flask incubations of sediment slurry and enrichment…
Kinetics of alachlor and atrazine biotransformation under various electron acceptor conditions
- Biology, Engineering
- 1995
Second-order rate constants were developed for the biotransformation of the herbicides atrazine and alachlor under aerobic, nitrate-reducing, sulfate-red reducing, and methanogenic conditions, indicating co-metabolic transformations.
Isolation and Characterization of a Pseudomonas sp. That Mineralizes the s-Triazine Herbicide Atrazine
- BiologyApplied and environmental microbiology
- 1995
A bacterium that was capable of metabolizing atrazine at very high concentrations (>1,000 ppm) was isolated from a herbicide spill site. The organism was differentiated by observing clearing zones on…
Anaerobic Degradation of Cyanuric Acid, Cysteine, and Atrazine by a Facultative Anaerobic Bacterium
- Biology, EngineeringApplied and environmental microbiology
- 1983
A facultative anaerobic bacterium that rapidly degrades cyanuric acid (CA) was isolated from the sediment of a stream that received industrial wastewater effluent and the cell yield was greatly enhanced by the simultaneous presence of cysteine and CA in the medium.
Dechlorination of Atrazine by a Rhizobium sp. Isolate
- BiologyApplied and environmental microbiology
- 1997
A Rhizobium sp. strain, named PATR, was isolated from an agricultural soil and found to actively degrade the herbicide atrazine. Incubation of PATR in a basal liquid medium containing 30 mg of…
Degradation of atrazine and related s‐triazines
- Biology
- 1989
The literature related to degradation of atrazine and related s‐triazines is reviewed, with particular emphasis on those substances formed along the degradative pathways and to the biodegradation aspects of mineralization.
Biodegradation of Atrazine and Alachlor in Subsurface Sediments
- Environmental Science
- 1993
Atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine) and alachlor (2-chloro-2 ' ,6 '-diethyl-N-[methoxymethyl]acetanilide) are commonly used for broadleaf weed control in the USA. Despite…
Nitrogen fertilizers promote denitrification
- ChemistryBiology and Fertility of Soils
- 1997
Abstract A laboratory study was conducted to compare the effects of different N fertilizers on emission of N2 and N2O during denitrification of NO3– in waterlogged soil. Field-moist samples of…




