Inoculation of an atrazine-degrading strain, Chelatobacter heintzii Cit1, in four different soils: effects of different inoculum densities

Rousseaux, Sandrine; Hartmann, Alain; Lagacherie, Bernard; Piutti, Séverine; Andreux, F.; Soulas, Guy

doi:10.1016/s0045-6535(02)00810-x

Cited by 67 publications

(48 citation statements)

References 28 publications

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“…Rousseaux et al (2003) observed that the introduction of 10 4 UFC g -1 of Chelatobacter heintzii Cit1 in soil poorly mineralizing atrazine resulted in a 3-fold increase in such a capacity. Gupta & Baummer (1996) studied the effect of poultry litter, commonly applied to the soil as manure before the utilization of atrazine, on the biodegradation of atrazine and verified that the rate of atrazine removal in soil was two times faster than without the litter; nutrients (mainly nitrates and phosphates) present in litter did not play any role in the degradation of atrazine.…”

Section: Strategies For Microbial Removal Of Atrazinementioning

confidence: 99%

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New aspects on atrazine biodegradation

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et al. 2010

Braz. arch. biol. technol.

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Section: Strategies For Microbial Removal Of Atrazinementioning

confidence: 99%

“…The Chelatobacter heintzii Citl, that showed the capacity to mineralize up to 80% of atrazine in 14 days, possessed the atrazine degrading genes atzABC and trzD (Rousseaux et al, 2003). According to Piutti et al (2003), Nocardioides sp.…”

Section: Atrazine Degradation By Bacteriamentioning

confidence: 99%

New aspects on atrazine biodegradation

Sene

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Secchi

et al. 2010

Braz. arch. biol. technol.

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“…It has been observed that when lower inoculum densities (<10 6 cells/g soil) are used, lower numbers of bacteria are able to survive the initial competition, and population decline usually occurs following inoculation [31,44,45]. This effect may be compensated for by using an inoculum with a higher bacterial density [46,47].…”

Section: Degradation Of 24-d and 24-dcp In Mineral Salt Mediummentioning

confidence: 99%

Biodegradation kinetics of 2,4-D by bacterial strains isolated from soil

2011

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The aim of the study was to characterize the 2,4-dichlorophenoxyacetic acid (2,4-D) degradative potential of three bacterial strains identified by MIDI-FAME profiling as Burkholderia cepacia (DS-1), Pseudomonas sp. (DS-2) and Sphingomonas paucimobilis (DS-3) isolated from soil with herbicide treatment history. All strains were capable of using herbicide as the only source of carbon and energy when grown in mineral salt medium (MSM) containing 2,4-D (50 mg/l). Over a 10 day incubation period, 69%, 73% and 54% of the initial dose of 2,4-D were degraded by strains DS-1, DS-2 and DS-3, respectively. Analysis of 2,4-dichlorophenol (2,4-DCP) concentration, the main metabolite of 2,4-D degradation, revealed that strains DS-1 and DS-2 may also have the potential to metabolize this compound. The percentage of 2,4-DCP removal was 67% and 77% in relation to maximum values of 9.5 and 9.2 mg/l determined after 4 and 2 days for MSM+DS-1 and MSM+DS-2, respectively. The degradation kinetics of 2,4-D (50 mg/kg) in sterile soil (SS) showed different potential of tested strains to degrade 2,4-D. The times within which the initial 2,4-D concentration was reduced by 50% (DT50) were 6.3, 5.0 and 9.4 days for SS+DS-1, SS+DS-2 and SS+DS-3, respectively.

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“…Bioaugmentation of Pseudomonas strain was found to be an encouraging indigenous treatment for atrazine spilled at high concentrations in soil (Lima et al, 2009). Rousseaux et al (2003) observed a 3-fold increase in biodegradation capacity after the bioaugmentation of 10 4 CFU g -1 of Chelatobacter heintzii Cit1 in the soil. Hydrolysis of atrazine was dominant in (85%) Kappa soil than in (48%) Molokai soil (Obien and Green, 1969).…”

Section: Biological Methodsmentioning

confidence: 86%

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2017

RJLBPCS

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ABSTRACT:Increasing human population is putting enormous pressure on food supply and agriculture. To increase crop production, pesticides are used intensively. Atrazine (herbicide) which has proved economical in case of maize and sorghum for yield increase and price reduction for farmers. However, extensive use of atrazine in agriculture resulted in pollution and adverse effects on the environment.There is need to tackle atrazine contamination. This review explores the way for atrazine remediation.

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Inoculation of an atrazine-degrading strain, Chelatobacter heintzii Cit1, in four different soils: effects of different inoculum densities

Cited by 67 publications

References 28 publications

New aspects on atrazine biodegradation

New aspects on atrazine biodegradation

Biodegradation kinetics of 2,4-D by bacterial strains isolated from soil

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