Project description:This experiment tests the effect of physiological dose of UV-B radiation on wild-type and uvr8-1 (UV Resistance Locus 8) and hy5-1 transcription factor mutants of Arabidopsis. Keywords: strain, stress response
Project description:This experiment tests the effect of physiological dose of UV-B radiation on wild-type and uvr8-1 (UV Resistance Locus 8) and hy5-1 transcription factor mutants of Arabidopsis.
Project description:Transcriptional profiling of 6-day-old seedlings of Arabidopsis wild type control and mutants is performed using Affymetrix IVT Arabidopsis ATH1 Genome Array.
Project description:Analysis of the transcriptomes of nearly ripe siliques (18-19 DAP) of the rdo2-1, rdo3 and hub1-2 (rdo4) mutants in comparison with wild-type Ler, using Affymetrix GeneChip Arabidopsis ATH1 Genome Array.
Project description:Transcriptome profiling of WT, mbd1, pyl5 and mbd1 pyl5 knock-out mutants in response to Abscisic acid (ABA) was done using Affymetrix GenechipTM Arabidopsis ATH1 Genome Array.
Project description:<p>Plants integrate light signals to regulate development and produce protective compounds such as flavonoids under excessive light stress. While these metabolites protect against light damage, their roles in modulating photoreceptor responses remain unclear. Here we show that naringenin chalcone (NGC), a flavonoid precursor that accumulates in the <em>Arabidopsis chalcone isomerase</em> mutant <em>tt5</em> but which is also present in wild type plants under solar light, promotes UVR8 monomer accumulation beyond its canonical UV-B response. A genetic suppressor screen reveals that loss of <em>UVR8</em> restores normal growth of tt5 mutants grown under high light, irrespective of the presence of UV-B. Biochemical and transcriptomic analyses show that NGC binds to monomeric UVR8, stabilizing its active form and triggering gene expression changes, even in the absence of UV-B. This work identifies a mechanism for stabilizing activated UVR8 and reveals crosstalk between light-induced metabolic intermediates and photoreceptor-mediated developmental regulation.</p>
Project description:Plants use sunlight as a source of energy for photosynthesis but also as an important environmental cue to regulate growth, development and light acclimation. Wavelengths in the UV-B (280-315 nm) and UV-A/blue (315-500 nm) regions of the spectrum are perceived by UV RESISTANCE LOCUS 8 (UVR8) and cryptochromes (CRY1 and CRY2), respectively. Despite recent advances in our understanding of how these photoreceptors promote photomorphogenesis, very little is known about the molecular mechanisms regulated by UVR8 and CRYs in sunlight exposed plants. Here, a factorial experiment was designed to assess the roles of UVR8 and CRYs in regulating transcriptome wide changes, hormone accumulation, and growth competence of Arabidopsis thaliana plants exposed to solar UV-B, UV-A, and blue radiation.
Project description:In order to study the Nep1 responsive genes in Arabidopsis, experiments were performed with the Affymetrix GeneChip Arabidopsis ATH1 Genome Array (Santa Clara, CA; Cat # 900385). Keywords: Arabidopsis, Nep1, Affymetrix GenChip
Project description:The Aloe vera transcriptome was analysed by hybridising triplicate samples of root and leaf tissue to the Affymetrix Arabidopsis ATH1 array.
