Project description:In order to get insights into the ability of ectomycorrhizal fungi to perceive their biotic environment as well as into the mechanisms of the interactions between ectomycorrhizal fungi and soil bacteria, we analysed the transcriptomic response of the ectomycorrhizal fungus L. bicolor and of two beneficial, and neutral soil bacteria during their interactions in vitro.
Project description:Metagenomics analysis reveals co-infection of fungi and bacteria isolated from different regions of brain tissue from elderly persons and patients with Alzheimer's disease.
Project description:Previously, we investigated the effect of fungal VOCs on the behavior of phylogenetically different soil bacteria (Schmidt et al 2015). In these experiments we showed that VOCs emitted by several fungi can lead to phenotypical responses in bacteria, for example, by inducing a change in motility (Schmidt et al 2015). We observed that the plant pathogenic fungus Fusarium culmorum produced a unique cluster of VOCs consisting primarily of terpenes. When exposed to the VOCs emitted by this fungus, the rhizobacterium Serratia plymuthica PRI-2C responded with an induction of motility. It is plausible that in soil, microorganisms sense changes in their environments via shifts in VOCs blend and adapt their behavior accordingly (Garbeva et al 2014). Although several studies indicated that VOCs can be used as signaling molecules in microbial inter-species interactions, the following questions remain unanswered as how are VOCs perceived as signals by the microorganisms and which regulatory pathways and genes are involved in the response? To answer these questions, the rhizosphere isolate S. plymuthica PRI-2C was grown alone or exposed to VOCs emitted by F. culmorum. The bacterial transcriptome and proteome were analyzed under each situation to identify the molecular basis of the bacterial response to fungal VOCs.
Project description:In order to get insights into the ability of ectomycorrhizal fungi to perceive their biotic environment as well as into the mechanisms of the interactions between ectomycorrhizal fungi and soil bacteria, we analysed the transcriptomic response of the ectomycorrhizal fungus L. bicolor and of two beneficial, and neutral soil bacteria during their interactions in vitro. We performed nine hybridizations (macroarray) with samples derived from Laccaria bicolor cultivated alone (3 biological replicates), with P. fluorescens BBc6R8 (3 biological replicates) and with Pf29Arp (3 biological replicates)
