Project description:au08-05_p25ind - comparison between constitutive and inducible p25 plants - Are there some genes deregulated by the p25 viral protein. - Comparison between constitutive and inducible p25 plants. Keywords: gene knock in (transgenic)
Project description:Title : Characterization of genes differentially expressed in roots of transgenic arabidopsis lines expressing the p25 protein of beet necrotic yellow vein virus.<br> <br> Biological question : <br> Rhizomania ("crazy root") is a severe disease of sugar beet caused by beet necrotic yellow vein virus (BNYVV), which is transmitted by the soil-inhabiting fungus Polymyxa betae. Symptoms of virus infection are characterized by a constricted tap root and a massive proliferation of fine rootlets that often undergo necrosis. BNYVV RNA-3 encodes a 25 kDa (p25) which is an important determinant of leaf symptom phenotype. It also governs BNYVV invasion of the plant root system and induction of rootlet proliferation in sugar beet.<br> In order to obtain a better understanding of molecular aspects of disease development in roots and to characterize specific host genes involved in response to viral infection, transgenic Arabidopsis overexpressors of p25 viral protein was obtained and better characterized. It was shown that transgenic plants that efficiently expressed p25 protein produced more lateral roots. <br> Comparative analysis (microarray) was performed between wild type Arabidopsis roots and transgenic Arabidopsis roots expressing p25 protein, in order to identify Arabidopsis genes differentially expressed in response to p25 viral protein.<br> <br> Experiment description: <br> Seeds were surface sterilized, chilled at 4C for 4 days, and then germinated and grown on square Petri plates containing sterilized Murashige and Skoog (MS) medium with 1% sucrose. Such stock plates were arranged vertically in plastic racks and placed into growth chamber. After 5 days, plants were transferred carefully onto fresh MS medium big round plates. On each plate, 60 Wild Type (WT) plantlets were transferred on the half right of the plate, and 60 transgenic plantlets (B, E or T lines) were transferred on the half left of the plate. Plates were arranged horizontally and placed into growth chamber. <br> <br>Experiment 1 : 5 plates containing WT0A control plants and B0A transgenic plants. <br> <br>Experiment 2 : 5 plates containing WT1 control plants and B transgenic plants. <br>5 plates containing WT2 control plants and E transgenic plants. <br>5 plates containing WT3 control plants and T transgenic plants. <br> <br>Plants were harvested after 7 days (experiment 1) or 12 days (experiment 2), and WT roots or transgenic roots were pooled and conserved at -80C.
Project description:Comparison of expression differences between Col-0 Arabidopsis thaliana and transgenic plants in the same background carrying three different Fusarium oxysporum effector genes
Project description:Comparison of gene expression between wild type Arabidopsis ecotype Col-0 plants and transgenic Arabidopsis ecotype col-0 plants expressing AtMYB23SRDX. Keywords: other
Project description:Here we present the transcriptomic profile of mutant plants designated as ceh1 (constitutively expressing HPL). CEH1 encodes 1-hydroxy-2-methyl-2-butenyl 4-diphosphate synthase (HDS), the enzyme controlling the bottleneck step of the biosynthesis of isopentenyl diphosphate via the 2-C-methyl-d-erythritol-4-phosphate (MEP) pathway in the plastids. Mutation of this enzyme in ceh1 mutant led to accumulation of high levels of the stress specific signaling metabolite 2c-methyl-D-erythritol 2,4-cylclodiphosphate (MEcPP), and consequently constitutive activation of a selected otherwise stress responsive genes. This data identifies the ensemble of stress responsive genes whose expression is regulated by the MEcPP signaling cascade.
Project description:ra08-03_kim - laccases - Are laccases involved in lignification - all plants were harveted at the same developmental stage in the same growth chamber between 10h30 and 11h. Keywords: wt vs mutant comparison
Project description:Here we present the transcriptomic profile of mutant plants designated as ceh1 (constitutively expressing HPL). CEH1 encodes 1-hydroxy-2-methyl-2-butenyl 4-diphosphate synthase (HDS), the enzyme controlling the bottleneck step of the biosynthesis of isopentenyl diphosphate via the 2-C-methyl-d-erythritol-4-phosphate (MEP) pathway in the plastids. Mutation of this enzyme in ceh1 mutant led to accumulation of high levels of the stress specific signaling metabolite 2c-methyl-D-erythritol 2,4-cylclodiphosphate (MEcPP), and consequently constitutive activation of a selected otherwise stress responsive genes. This data identifies the ensemble of stress responsive genes whose expression is regulated by the MEcPP signaling cascade. About 20 two-week-old plants grown on 1/2 MS medium were collected to extract total RNA. Transcriptome of parent line and ceh1 mutant were compared.
Project description:To identify genes acting downstream of MAP kinase kinase, and thus map its signal, we used the steroid-inducible overexpression system. The constitutive active form MKK3 (MKK3DD) or MKK4 (MKK4DD) was cloned into the glucocorticoid-inducible vector pTA7002 and transformed using Agrobacterium method into Arabidopsis Col-0 plants. The transgenic plants transformed empty vector was used as control plants (Cont).
Project description:Transcriptome analysis of Attop3A-2 mutant lines in comparison to wild type plants and Attop3A-2::TOP3α-N-Term complementation lines in comparison to wild type plants