0000000000602709
AUTHOR
Cécile Monard
Biotic control of atrazine degradation in soils: functional diversity of degradation and macrofauna effects.
communication oraleFR2116communication orale
Artificial selection of rhizosphere microbial communities associated with plant resistance to leaf pathogens
International audience; Artificial selection of rhizosphere microbial communities associated with plant resistance to leaf pathogens
Biotic control of Atrazine degradation in soils: Impacts of earthworms on atrazine-degrading bacterial communities.
PosterFR2116Poster
Herbicide degradation in temperate soils : effects of earthworms interaction with indigenous and atrazine degrading bacterial communities
poster
atzgene expressions during atrazine degradation in the soil drilosphere
One of the various ecosystemic services sustained by soil is pollutant degradation mediated by adapted soil bacteria. The pathways of atrazine biodegradation have been elucidated but in situ expression of the genes involved in atrazine degradation has yet to be demonstrated in soil. Expression of the atzA and atzD genes involved in atrazine dechlorination and s-triazine ring cleavage, respectively, was investigated during in situ degradation of atrazine in the soil drilosphere and bulked samples from two agricultural soils that differed in their ability to mineralize atrazine. Interestingly, expression of the atzA gene, although present in both soils, was not detected. Atrazine mineralizati…
Analysis of atz gene expressions during atrazine degradation in various soil microsites.
communication orale et affichée
Evidence of a core microbiota shaped by plant and earthworm interactions across soils
Prod 2018-139a EA AGROSUP INRA BIOME IPM; International audience; While having distinct niches, plants and earthworms have occupied soils over geological times, mutually influencing each-others. These macroorganisms are considered “ecosystem engineers”, actively modifying soil physical structure, which notably provides specific habitats for microorganisms: the rhizosphere and the drilosphere (casts/burrows produced by earthworms). In this study, we aimed to disentangle the relative importance of both macroorganisms in shaping microbial community assembly in different soil types, and determine the extent and modalities of how rhizosphere and drilosphere communities may coalesce with each-oth…
A core microbiota of plant and earthworm interaction? Phylogenetic and functional aspects
International audience; The core microbiota concept has been proposed to describe the subset of a microbiota (e.g. the rhizosphere microbial community) associated with a given host (e.g. a plant) going beyond macroenvironment differences (e.g. soil type), and characterized by taxonomic markers (e.g. 16S rRNA gene sequences). Its existence has been questioned by geographical studies, showing the overruling soil type effect in shaping microbial communities. As far as biotic determinants are concerned, several “hosts” or macroorganisms are impacting a given habitat and its specific microbial community. In soils, there is an overlap between the so-called rhizosphere and the drilosphere, defined…