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Gene expression of Laccaria bicolor S238N free-living mycelium grown on different media

ABSTRACT: Transcript profiles of Laccaria bicolor S238N mycelium on various media were analyzed. The array probes were designed from gene models taken from the Joint Genome Institute (JGI, department of energy) Laccaria bicolor genome sequence version 1. One goal was to evaluate the effect of nutrient deprivation on the transcriptome of Laccaria bicolor.

ORGANISM(S): Laccaria bicolor S238N-H82 Laccaria bicolor

PROVIDER: GSE35556 | GEO | 2012/03/01

SECONDARY ACCESSION(S): PRJNA152673

REPOSITORIES: GEO

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Gene expression of Laccaria bicolor S238N free-living mycelium grown on different media

Project description:Transcript profiles of Laccaria bicolor S238N mycelium on various media were analyzed. The array probes were designed from gene models taken from the Joint Genome Institute (JGI, department of energy) Laccaria bicolor genome sequence version 1. One goal was to evaluate the effect of nutrient deprivation on the transcriptome of Laccaria bicolor. We performed 15 hybridizations (Roche-NimbleGen) with samples derived from Laccaria bicolor free-living mycelium grown on MMN medium, on MMN with a 10 times reduction in all major macro-elements, on MMN with a 10 times reduction in the quantity of glucose or onto agar medium supplemented with the same nutrients used to fertilize our mycorrhization experiments.

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Gene expression changes in Laccaria bicolor mycelium grown under different nutritional conditions

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Time Course of Laccaria bicolor S238N and Populus tremula x alba 717-1B4 in vitro ectomycorrhizal development

Project description:Illumina technology was used to generate mRNA profiles of a time course of Laccaria bicolor S238N and Populus tremula x alba 717-1B4 in vitro ectomycorrhizal development. Total RNA was extracted, TruSeq mRNA Stranded libraries were constructed and and sequenced in triplicates (2 x 150 bp Illumina HiSeq3000) at the Genotoul sequencing facilities (Toulouse, France). Raw reads were trimmed for low quality (quality score 0.05), Illumina adapters and sequences shorter than 15 nucleotides and aligned to the L. bicolor v2 reference transcripts available at the JGI database https://mycocosm.jgi.doe.gov/Lacbi2/Lacbi2.home.html using CLC Genomics Workbench v8.

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Laccaria-Douglas fir: A Timecourse of Mycorrhizal Root Tip Development

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Laccaria-Poplar: A Timecourse of Mycorrhizal Root Tip Development

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 We performed 16 hybridizations (NimbleGen) with samples derived from P.trichocarpa/L.bicolor mycorrhizal root tips. Samples were taken after 2,4,6 and 12 weeks of interaction (four biological replicates). These samples were compared to free-living mycelium from Laccaria bicolor S238N (three biological replicates). All samples were labeled with Cy3.

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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)

2010-11-23 | E-GEOD-18635 | biostudies-arrayexpress

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Project description:Laccaria bicolor transcript profiles of different tissues and mycorrhizal root tips from different host trees were analyzed. The array probes were designed from gene models taken from the Joint Genome Institute (JGI, department of energy) Laccaria bicolor genome sequence version 1. One goal was to compare gene expression profiles from ectomycorrhizal root tips with different host plants.

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