Project description:We have used transgenic ethylene-insensitive birches (Betula pendula), which express the Arabidopsis ethylene receptor gene ETR1 carrying the dominant mutation etr1-1, to investigate the role of ethylene in short day (SD) -induced responses in the shoot apical meristem in birch. Wild-type birch (clone V5834) and two ethylene-insensitive lines in this background (BPetr1-1-35 and BPetr1-1-86; see Plant Physiol 132: 185-195) were exposed to SD. After 12, 16 and 20 days under SD, apices of branches of three trees were pooled before RNA extraction from each sample. To study the ethylene-dependent SD-transcriptome in birch apices, the RNA extracts of lines BPetr1-1-35 and BPetr1-1-86 were separately compared with the reference, wild-type V5834, at the three time points (12SD, 16SD, 20SD) resulting in altogether six microarray hybridizations.
Project description:A microarray analysis was conducted to investigate transcriptional differences between strains of Paxillus involutus that show different abilities in formation of ectomycorrhizal associations with birch (Betula pendula). Our goal was to identify genes that showed differential regulation from comparing incompatible (not mycorrhiza forming) (Nau) and compatible (mycorrhiza forming) strains (ATCC200175 and Maj) of P. involutus, in association with birch. The entire design involved 11 slides (ME01-M11), 13 labelled extracts, and 3 biological replicates (Rep1-Rep3). The experiment was designed as a simple loop (all-pairwise comparisons) of all three strains including dye-swap, biological and technical replication. Additional information: In our pre-processing of data, 4 channels were excluded for further analyses due to overall poor quality and are listed below. Slide ME03, Cy5(635nm) (strain Nau, Rep2) Slide ME04, Cy5(635nm) (strain Nau, Rep2) Slide ME06, Cy5(635nm) (strain Maj, Rep2) Slide ME09, Cy5(635nm) (strain Nau, Rep2)
Project description:3 individuals of Betula pendula x 1 series of pooled RNA-seq data from longitudinal tangential cryosections of tree trunk spanning differentiated phloem to differentiated xylem
