ABSTRACT: Dual transcriptomic analysis of the interaction between the ectomycorrhizal fungus Laccaria bicolor S238N and soil bacteria Pseudomonas fluorescens BB6cR8 and Pf29Arp
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 the strain Pseudomonas fluorescens Pf29Arp during their interactions in vitro. We performed six hybridizations (shotgun DNA microarray) with samples derived from Pseudomonas fluorescens Pf29Arp cultivated alone or with Laccaria bicolor S238N in vitro (3 control biological replicates and 3 biological replicates with L. bicolor)
Project description:This study characterizes the transcriptomic alterations of P. trichocarpa during interaction with the ectomycorrhizal fungus Laccaria bicolor S238N. Four time-points were analyzed, two weeks, four weeks , six weeks and twelve weeks after inoculation.
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 one detrimental bacterial strain during their interactions in vitro. We performed hybridizations (whole genome array) with samples derived from Collimonas fungivorans Ter331cultivated alone or with Laccaria bicolor S238N in vitro (2 control biological replicates and 2 biological replicates with L. bicolor)
Project description:This study characterizes the transcriptomic alterations of P. trichocarpa during interaction with the ectomycorrhizal fungus Laccaria bicolor S238N. Four time-points were analyzed, two weeks, four weeks , six weeks and twelve weeks after inoculation. We performed 32 hybridizations (NimbleGen) with samples derived from Populus trichocarpa control roots and P.trichocarpa mycorrhizal root tips. Samples were taken after 2,4,6 and 12 weeks of interaction (four biological replicates). All samples were labeled with Cy3.
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)
Project description:Bacteria use small diffusible molecules to communicate and to coordinate population response by a cell density-depend mechanism named quorum sensing (QS). If such a cross-talk was first described between bacterial species, it was recently evidenced that bacterial QS signal molecules can also be sensed by eukaryotic organisms thus playing as inter-kingdom signalling molecules. Although ectomycorrhizal fungi interact physically and metabolically with myriads of bacterial species in soils, nothing is known about the ability of ectomycorrhiza-associated bacteria to produce QS molecules and the potential impact of these molecules in the interaction. While investigating the potential effect of these molecules on the physiology of the ectomycorrhizal fungus, we found that 3O,C12-HSL also induced an alteration of the transcriptome of L. bicolor S238N. This study used the microarray design as follows: cDNA libraries from pure culture of Laccaria bicolor S238N mycelium and from three stages of L. bicolor S238N sporocarp development (Lb2 library: stipes and caps of 5–10 mm growing sporocarps; Lb3 library: caps of 30– 40 mm mature sporocarps), collected under Douglas fir seedlings grown in a glasshouse, were constructed in the λTriplEx2 vector. The cDNA inserts from bacterial clones were PCR-amplified and 4992 cDNAs were arrayed from 384-well microtitre plates on Nylon membranes. Three independent biological replicates were performed for the treatment (3,OC12-HSL) and for the control (ethyl acetate)
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 the strain Pseudomonas fluorescens Pf29Arp during their interactions in vitro.
Project description:This study characterizes the transcriptomic alterations of P. tremula x P. alba at three weeks after inoculation with the ectomycorrhizal fungus Laccaria bicolor.
Project description:Bacteria use small diffusible molecules to communicate and to coordinate population response by a cell density-depend mechanism named quorum sensing (QS). If such a cross-talk was first described between bacterial species, it was recently evidenced that bacterial QS signal molecules can also be sensed by eukaryotic organisms thus playing as inter-kingdom signalling molecules. Although ectomycorrhizal fungi interact physically and metabolically with myriads of bacterial species in soils, nothing is known about the ability of ectomycorrhiza-associated bacteria to produce QS molecules and the potential impact of these molecules in the interaction. While investigating the potential effect of these molecules on the physiology of the ectomycorrhizal fungus, we found that 3O,C12-HSL also induced an alteration of the transcriptome of L. bicolor S238N.
Project description:This study characterizes the transcriptomic alterations of Laccaria bicolor S238N during interaction with P. trichocarpa. Four time-points were analyzed, two weeks, four weeks , six weeks and twelve weeks after inoculation and compared to the transcriptome of free-living mycelium from Laccaria bicolor S238N
