Project description:Inhibition of cellulose synthesis by chemical inhibitors or in a mutant background leads to rapid inhibition of cell elongation. This inhibition appears to be an active process, which involves feedback signalling from the cell wall. We have isolated two loci THE1 and THE2, which are identified by mutations that partially suppress the dark-grown hypocotyl phenotype in a mutant background for cellulose synthase catalytic subunit CESA6_PROCUSTE1. THE1 encodes a receptor kinase and may play a role in this feedback signalling process. To identify genes that are regulated by THE1 and THE2, we compared the transcript profiles of 5 day-old dark-grown seedlings of the1-1_prc1-1 with prc1-1 ; the1-3_prc1-8 with prc1-8 ; prc1-8 or the1-3 with WS and the2-1_prc1-1 with prc1-1.
Project description:Arabidopsis cell culture was treated with 300 µM iron-citrate. Samples were collected before (0), and 5, 15, 30 and 60 minutes after iron addition. A repetition was performed for 2 points of the time course: before and 30 min after iron addition. Samples are designed as follow: Exp 1: 0(1), 5, 15, 30(1) et 60. Exp 2: 0(2) et 30(2)
Project description:Comparison of RNA levels between wild type and a Kdo Transferase mutant in Arabidopsis thaliana. We are interested by the cell-wall biosyntheis in the Arabidopsis thaliana plants which are affected in Kdo biosynthesis.
Project description:1- Comparison of the transcriptome of two ecotypes (Col0 and Ler0): compare the transcriptome of ColO versus Ler0 for different tissues and developmental stages (seedlings 7 days, shoot 14 days, flowers, leafs 35 days)<br> 2- Impact of SINE RNA : Analyse the consequence of the expression of a SINE RNA in Arabidopsis thaliana<br> 3- Impact of the gcn2 mutation : Impact of the gcn2 mutation on the Arabidopsis thaliana transcriptome. GCN2 is a kinase potentially regulated by the SINE non-coding RNA
Project description:Identification of the régulation pathways implied in adventitious root formation control in Arabidopsis etiolated seedlings. 2 mutants : a null allele and a weak allele of the ARGONAUTE gene. 4 repetitions in 2 pools for each sample.
Project description:Comparison of the transcriptome of nrpd1a-4_nrpd1b-11 mutant and the wild type. Experiments were done using two independent biological replicates.<br><br>
Project description:Samples were taken at 7, 14 and 24 days post infection (dpi). Two treatments were considered: infection with R. fascians D188-5 that is non virulent (control) and infections with the virulent D188 strain.
Project description:In this experiment, Arabidopsis plants infected by a virus, Tobacco etch virus (TEV), a potyvirus, were compared with healthy plants to identify genes for which the expression is modified by the viral infection. Analysis of both inoculated leaves and upper young leaves were performed 7 days after the inoculation with the virus (or with only buffer for the healthy plants).
Project description:Identification of new genes regulated by RDR6 and SGS3 (two genes involved in PTGS) by analysis of the transcriptome of rdr6-1 and sgs3-1 mutants compared to wild-type plants in different tissues (flower and leaves). The comparison between transcriptome of rdr6-1 and sgs3-1 mutant alleles impaired in PTGS and development (juvenile-to-adult transition) and transcriptome of rdr6-5 and sgs3-3 alleles impaired only in PTGS would allowed identification of genes involved in the developmental default (zip phenotype) of the null alleles (rdr6-1 and sgs3-1 mutants).
Project description:rs04-04_skp2_cul4 - comparison_col0vsskp2 - Antisense and mutants of the SKP2 and CUL4 genes are compared to the Wt in order to identify the genes controlled by those SCF proteins. - Comparison Col0 versus skp2 2 dye-swap - wt vs mutant comparison