Interactions between H2O2 and glutathione in gene expression
ABSTRACT: rs08-03_glutathion - glutathion - How does glutathione content or reduction state affect H2O2-induced changes in the transcriptome? - Three single Arabidopsis mutants were used: cat2, knockout for catalase2 and so enriched in H2O2; cad2, defective in glutathione content; cytGR, knockout for cytosolic glutathione reductase. Cat2 was crossed with cad2 and cyt GR, and col0, 3 single mutants, and 2 double mutants were sampled in controlled growth conditions either in 8h or 16h photoperiod. Keywords: gene knock out 20 dye-swap pairs - CATMA arrays: 40 arrays
Arabidopsis GLUTATHIONE REDUCTASE1 plays a crucial role in leaf responses to intracellular hydrogen peroxide and in ensuring appropriate gene expression through both salicylic acid and jasmonic acid signaling pathways.
Glutathione is a major cellular thiol that is maintained in the reduced state by glutathione reductase (GR), which is encoded by two genes in Arabidopsis (Arabidopsis thaliana; GR1 and GR2). This study addressed the role of GR1 in hydrogen peroxide (H(2)O(2)) responses through a combined genetic, transcriptomic, and redox profiling approach. To identify the potential role of changes in glutathione status in H(2)O(2) signaling, gr1 mutants, which show a constitutive increase in oxidized glutathio ...[more]
Project description:rs10-01_rrm - quadruple rrm experience - What is the role of the RRM protein family in plants? Plants were grown on soil in controlled environment under LD (16 h light/8 h dark) and the rosette leaves (8-leaf stage seedlings) were collected for RNA preparation. Keywords: normal vs transgenic comparison 2 dye-swap - CATMA arrays
Project description:gnp06-03_microtrac Endogenous hairpins-ir71 targets What are the genes (including miRNA precursors) that are differentially regulated in a set of viral siRNA in diferent mutants? Lines IR71 KO n°3 and Col-0 were grown on soil until bolting, Flower buds were then harvested and RNA extracted with Qiagen RNeasy Plant mini kit. RNA was stored at -20°C. 3 dye-swap - gene knock out
Project description:gnp07_regeneome_cuc2 - cuc2 - CUC2 is expressed in meristem. It permits to create organs boundaries. It is also expressed in leave margins. Is there a mecanism meristem like in leave margins? - To compare wt and cuc2 leaf margins. And compare teeth and hollow inside the arabidopsis leaf margin. 8 dye-swap - tissue comparison,wt vs mutant comparison
Project description:adt10-01_wip2 - wip overexpressing plants - Identification of genes induced or repressed by WIP genes - The objective is to identify genes responsible for the phenotypes observed in WIP overexpressing lines. WIP transcription factors are involved in reproductive and vegetative development by acting on the remodeling of various tissues. The WIP related processes have a major impact, in particular on reproduction (sex determination, fertilization, development of the seed). The way of action of these transcription factors is probably conserved, their effect depending only on their specificity of expression. Two WIP genes, NTT and TT1, was overexpressed in Arabidopsis thaliana. The objective is to compare the common deregulated genes (and in particular repressed) in the transcriptome of these two overexpressor lines, to highlight their mode of action and the way they act on the tissue in which they are expressed. Keywords: gene knock in (transgenic),normal vs transgenic comparaison 6 dye-swap - CATMA arrays
Project description:rs09-09_della-dark - della-regulation in darkness versus light - Identification of DELLA-dependent downstream targets in darkness - Aim was to determine downstream target of DELLA proteins involved in skotomorphogenesis. Wt, ga1-3, ga1-3_rga_gai_rgl1_rgl2_rgl3 global seeds were sterilized, sown on MS agar plates then put for stratification for 3 days at 4°C. Plates were placed in growth cabinet at 22°C for 5 days in darkness or in continous light. Keywords: gene knock out 9 dye-swap - CATMA arrays
Project description:au10-15_cineroots - transdifferentiation - Study of the molecular mechanism during transdifferenciation from root apical meristem to shoot apical meristem - culture in middle with different hormons, permits transdifferenciation from root to shoot tissues. 6 dye-swap - time course
Project description:gnp07_regeneome_microdissectionbias - microdissection vs no microdissection - Transcriptome bias induce by protocols used in microdissection - To compare RNA from flowers and RNA from microdissected flowers to know bias induce by microdissection (dissection from all tissues were collected to have a representation of entire flower) 2 dye-swap - treated vs untreated comparison
Project description:ra09-01_qtlleafgrowth - ego3 - What are the transcriptional consequences of the allelic contrast at SG3, SG1 and EGO3 loci mapped for its effect on shoot growth and identified at the gene level - Plants were grown in the in vitro conditions with 60 mM mannitol, where we have mapped and cloned the concerned QTL which allows us to see the phenotype linked to the segregation of the natural alleles. We are comparing 2 genotypes descending from a RIL from the Cvi x Col (H1 is Col allele containing HIF, and A2 is Cvi allele containing HIF). 2 dye-swap - genotype comparison
Project description:rs10-03_ind - comparison of ind induced vs mock treated seedlings - Identification of miRNAs regulated by IND - Transgenic seeds containing an IND transgene under the control of a dexamethasone inducible promoter were germinated and grown in liquid Murashige/Skoog medium under a 16h light/8h darkness light regime. After seven days of growth, seedlings were either mock-treated or treated with 10 micromolar dexamethasone for 24 hours. 3 dye-swap - induced vs non-induced comparison
Project description:gnp_blan06_torpten - lst8 - The impact of the TOR pathway on growth and stress responses. Comparison between the lst8 mutant vs. WT in short day and in long day conditions. 8 dye-swaps - gene knock out.