Project description:Here we compare transcriptomic data generated using Affymetrix one-cycle (standard labelling protocol), two-cycle (small-sample protocol) and IVT-Express protocols with the Affymetrix ATH1 array using Arabidopsis root samples. Results obtained with each protocol are broadly similar. However, we show that there are 35 probe sets (of a total of 22810) that are misrepresented in the two-cycle data sets. Of these, 33 probe sets were classed as mis-amplified when comparisons of two independent publicly available data sets were undertaken.
Project description:Seeds were plated on sterilized membranes and grown under a 16h/8h light/dark regime at 21ᄚC. After 2 days of germination and 5 days of growth, the membrane was transferred to MS medium containing 0.3 ?g/ml bleomycin for 24 h. Triplicate batches of root meristem material seedlings were harvested for total RNA preparation.
Project description:Transcript profiling was performed on samples derived from plants grown under long day conditions. Time series were harvested under diurnal (L/D; light/dark cycles) at control temperature (20 C) and cold (4 C); and under circadian conditions (L/L; continuous light) at control temperature (20 C). Leaves were sampled at time 0 and after 2 h (to coincide with light-dark transitions) and then every 4 h until 58 h.
Project description:Arabidopsis seedlings, of both wild-type and an ARF7/ARF19 double knockout mutant, were grown to 7 days post-germination. The roots were then dissected into 5 developmental zones, the meristem, early elongation zone, late elongation zone, mature root and lateral root zone. The sections then underwent transcriptional profiling to identify processes and regulatory events specific and in common to the zones.
Project description:Arabidopsis thaliana seeds after imbibition were inoculated in ½ MS medium supplemented with 0.8% agar and 1% sucrose. Once the plant material was uniformly germinated, the experimental conditions were applied. 5d old light-grown uniformly germinated seedlings were washed seven times with sterile water with last wash given by ½ MS liquid medium without sucrose to remove residual exogenous sugar and the plant material was kept in ½ MS liquid without sucrose in the dark for all subsequent steps. Cultures were shaken at 140 rpm at 22oC for 24 h and then 3 h treatment was given with liquid ½ MS without glucose and liquid ½ MS supplemented with BR (0.1 ?M EBR), glucose (3%), glucose (3%) + BR (0.1 ?M EBR). Seedlings were harvested after 3h and preceded for RNA isolation and Microarray analysis.
Project description:Total RNA was isolated from 35-d old inflorescence stems of plants. For microarray analysis, three biological replicates were included for both WT control and fpgs1 mutant.