Degradation de l'herbicide chlorprophame dans un sol: Role de l'introduction de Pseudomonas alcaligenes et de Pseudomonas cepacia

Milhomme, Henri; Véga, Danielle; Marty, Jean‐Louis; Bastide, J.

doi:10.1016/0038-0717(89)90109-0

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…As has also been observed for other pesticides [ 6 ] , several applications of atrazine on the same soil sample result in an enhancement of degradation (Fig. 2).…”

Section: Resultssupporting

confidence: 85%

Degradation of atrazine in laboratory microcosms: Isolation and identification of the biodegrading bacteria

Mirgain

Green

Monteil

1993

Enviro Toxic and Chemistry

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Several natural ecosystems, including soil and water microcosms, have been explored for their potential to biodegrade atrazine (2‐chloro‐4‐[ethylamino]‐6‐[isopropylamino]‐1,3,5‐triazine). Subculturing soil or water samples with several applications of the herbicide leads to an enhancement of atrazine catabolism correlating with a decrease in the number of bacterial species. A combination of enrichment culture techniques, the imposition of carbon limitation, and plating on selective atrazine‐agar plates have permitted the isolation of several bacteria able to biodegrade atrazine from different polluted or unpolluted ecosystems. One of the selected bacteria, originating from an agricultural soil, has been identified as Acinetobacter calcoaceticus, which alone in pure culture can degrade atrazine. From another agricultural soil Pseudomonas alcaligenes associated with an Agrobactenum sp. was selected. A garden soil treated only once with the herbicide was found to contain an association of five different bacteria that together degrade atrazine. Finally, a Pseudomonas putida/Xanthomonas maltophilia pair has been isolated from an aquatic ecosystem. In consortium, in coculture, or in pure culture with well‐defined experimental parameters, the induced bacteria degrade added atrazine in 18 h.

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“…As has also been observed for other pesticides [ 6 ] , several applications of atrazine on the same soil sample result in an enhancement of degradation (Fig. 2).…”

Section: Resultssupporting

confidence: 85%

Degradation of atrazine in laboratory microcosms: Isolation and identification of the biodegrading bacteria

Mirgain

Green

Monteil

1993

Enviro Toxic and Chemistry

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“…On the other hand, when biofilm formation are desirable in future applications of the catabolic strains, it is recommended to favor biofilm-forming communities during enrichment using the strategy described here. Members of the genera Pseudomonas, Agrobacterium, Flavobacterium, Achromobacter, and Arthrobacter are known to be able to degrade chloropropham (14,18,21,33). Diaphorobacter, Delftia, and Stenotrophomonas spp.…”

Section: Vol 77 2011 Planktonic Versus Biofilm Catabolic Communitiementioning

confidence: 99%

Planktonic versus Biofilm Catabolic Communities: Importance of the Biofilm for Species Selection and Pesticide Degradation

Verhagen

Gelder

Hoefman

et al. 2011

Appl Environ Microbiol

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Chloropropham-degrading cultures were obtained from sludge and soil samples by using two different enrichment techniques: (i) planktonic enrichments in shaken liquid medium and (ii) biofilm enrichments on two types of solid matrixes (plastic chips and gravel). Denaturing gradient gel electrophoresis fingerprinting showed that planktonic and biofilm cultures had a different community composition depending on the presence and type of added solid matrix during enrichment. This was reflected in the unique chloropropham-degrading species that could be isolated from the different cultures. Planktonic and biofilm cultures also differed in chloropropham-degrading activity. With biofilm cultures, slower chloropropham removal was observed, but with less build-up of the toxic intermediate 3-chloroaniline. Disruption of the biofilm architecture resulted in degradation characteristics shifting toward those of the free suspensions, indicating the importance of a well-established biofilm structure for good performance. These results show that biofilm-mediated enrichment techniques can be used to select for pollutant-degrading microorganisms that like to proliferate in a biofilm and that cannot be isolated using conventional shaken-liquid procedures. Furthermore, the influence of the biofilm architecture on the pesticide degradation characteristics suggests that for bioaugmentation the use of biofilm catabolic communities might be a proficient alternative to using planktonic freely suspended cultures.

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Metabolism of iprodione in adapted and non-adapted soils; Effect of soil inoculation with an iprodione-degrading Arthrobacter strain

Mercadier

Garcia

Véga

et al. 1996

Soil Biology and Biochemistry

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Degradation de l'herbicide chlorprophame dans un sol: Role de l'introduction de Pseudomonas alcaligenes et de Pseudomonas cepacia

Cited by 6 publications

References 14 publications

Degradation of atrazine in laboratory microcosms: Isolation and identification of the biodegrading bacteria

Degradation of atrazine in laboratory microcosms: Isolation and identification of the biodegrading bacteria

Planktonic versus Biofilm Catabolic Communities: Importance of the Biofilm for Species Selection and Pesticide Degradation

Metabolism of iprodione in adapted and non-adapted soils; Effect of soil inoculation with an iprodione-degrading Arthrobacter strain

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