Project description:We report the application of Whole Genome Bisulfite Sequencing to identify differentially methylated regions (DMR) in two RNAi transgenic lines, with dowregulated expression of the demeter-like gene PtaDML10, in comparisson to wild-type plants of Populus tremula x Populus alba plants.
Project description:Global gene expression pattern of phloem and xylem tissue were determined using a Nimblegen microarray based on JGI v1.1 gene models. Xylem tissue from both Populus trichocarpa Nisqually-1 and Populus tremula X Populus alba hybrid were used in the study.
Project description:Aim of the project: Genome wide gene expression profiles across the cambial zone are analyzed in 35um resolution from wild type hybrid aspen (Populus tremula x tremuloides) and two independent LMX5::AtIPT7 over expressor transgenic Populus tree lines.
Project description:We profiled gene expression and phenotypic traits in Populus tremula to examine evidence of sexual dimorphism and sex biased gene expression.
Project description:Oligoarray analysis was used to identify genes differentially expressed in 2 mm sections of the basal stem region of wild type T89, PtAIL1 over-expressing or PtAIL1 RNAi lines of P. tremula x Populus tremuloides 24h and 72h after adventitious rooting induction. The Populus trichocarpa custom-exon expression array (12x135K) manufactured by Roche NimbleGen Systems Limited (Madison, WI) (http://www.nimblegen.com/products/exp/index.html) contained three independent, nonidentical, 60-mer probes per gene model coding sequence. Included in the oligoarray were 43,929 annotated gene models (Populus trichocarpa genome v2 ; Phytozome 5.0), 5,859 random 60-mer control probes and labelling controls. We performed 27 hybridizations from wildtype, PtAIL1 over-expressing or PtAIL1 RNAi lines of P. tremula x Populus tremuloides at time 0, 24h and 72h after adventitious rooting induction. For each timepoint we performed three biological replicates.
Project description:The majority of trees live in association with symbiotic fungi, which facilitate their access to soil nutrients. The ectomycorrhizal symbiosis represents a complex biological system involving multifaceted interactions between the two partners. The establishment of the symbiosis depends on various conditions (e.g. climate), but also on the genetic traits of the partners. To evaluate the impact of the genetic predisposition on the development and functioning of ectomycorrhizas, we compared the transcriptome of roots from Populus trichocarpa and Populus deltoides colonized with Laccaria bicolor. The Populus whole-genome expression array version 2.0 (S. DiFazio, A. Brunner, P. Dharmawardhana, and K. Munn, unpublished data) manufactured by NimbleGen Systems Limited (Madison, WI) contains in duplicates three independent, non-identical, 60-mer probes per whole gene model plus control probes and labeling controls. Included in the microarray are 65,965 probe sets corresponding to 55,970 gene models predicted on the P.trichocarpa genome sequence version 1.0 and 9,995 aspen cDNA sequences (Populus tremula, Populus tremuloides, and P. tremula x P. tremuloides). NimbleGen whole genome microarray analyses were performed in triplicate as per manufacturer's instructions. We carried out six hybridizations (NimbleGen) with samples derived from Populus trichocarpa and Populus deltoides mycorrhizal root tips. Three samples (biological replicates) originated from Populus trichocarpa (GSM648401, GSM648403, GSM648405) and three biological replicates from Populus deltoides (GSM648408, GSM648411, GSM648414). cDNA was synthesized using CLONTECH Super Smart cDNA Synthesis kit containing an amplification step on the cDNA level. All samples were labeled with Cy3.
Project description:Illumina HiSeq technology was used to generate mRNA profiles from Populus tremula x alba INRA 717-1B4 roots treated with Methyl jasmonate. Samples were harvested after two weeks either from untreated control roots or from Methyl jasmonate treated roots. Paired-end (2X100bp) reads were generated and aligned to the Populus trichocarpa (http://www.phytozome.net/poplar.php) using CLC Genomics Workbench 6.
