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Biodégradation des herbicides en sols tempérés - Contrôle des communautés bactériennes dégradantes par la bioturbation du sol

Abstract : During the last decades, several soil and water pollutions have been observed following intensive use of pesticides. By their high ability to adapt, soil bacteria acquired the ability to use these molecules as nutrient sources and so to degrade them. This ecological service is in situ submitted to numerous biotic interactions acting on bacteria and specially earthworm (soil engineers) bioturbation. The objectives of this study were to better understand these tight interactions between degrading soil bacteria and lumbricid macrofauna by using atrazine as a model. Two strategies were used: (i) a quantitative approach allowed us to determine the impact of earthworms on atrazine degrading bacterial abundance and activity and (ii) a qualitative approach allowed us to link diversity to function with identification of bacteria actively implied in atrazine degradation in different soil microsites produced by earthworm bioturbation.
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https://tel.archives-ouvertes.fr/tel-00350389
Contributor : Cécile Monard <>
Submitted on : Tuesday, January 6, 2009 - 3:45:01 PM
Last modification on : Thursday, January 14, 2021 - 11:37:40 AM
Long-term archiving on: : Tuesday, June 8, 2010 - 6:43:43 PM

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  • HAL Id : tel-00350389, version 1

Citation

Cécile Monard. Biodégradation des herbicides en sols tempérés - Contrôle des communautés bactériennes dégradantes par la bioturbation du sol. Sciences du Vivant [q-bio]. Université Rennes 1, 2008. Français. ⟨tel-00350389⟩

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