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Comparison ws vs de and dy-Impact of a plastidial redox perturbation on Arabidopsis transcriptome

ABSTRACT: af47_thioredoxins - comparison ws vs de and dy - Knock-out mutants of the ferredoxin-thioredoxin reductase were used to evaluate the impact of the redox perturbation of the plastidial thioredoxins on Arabidopsis transcriptome. - Wild-type (WS) and two T-DNA mutant lines for the variable subunit of ferredoxin:thioredoxin reductase ( DY and DE from INRA of Versailles collection) were compared Keywords: wt vs mutant comparison

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE7978 | GEO | 2007/06/20

SECONDARY ACCESSION(S): PRJNA100743

REPOSITORIES: GEO

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Arabidopsis thaliana

Project description:comparison ws vs de and dy-Impact of a plastidial redox perturbation on Arabidopsis transcriptome

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comparison ws vs crb (cul3a)-Study of the function of SCF complexes in Arabidopsis.

Project description:af01_cul3a2_cul3b - comparison ws vs crb (cul3a) - Cullin proteins belong to a multigene family that includes at least three members in budding yeast, six in human, five in C. elegans and five in Arabidopsis thaliana. All cullins analyzed so far directly interact with RBX1/HRT1/ROC1, a RING finger protein, thereby forming the core module of different ubiquitin ligase complexes, which specifically recruit substrate proteins for ubiquitylation and subsequent degradation by the proteasome. CULLIN1, the only cullin protein studied so far in plants, has been shown to be essential for plant development and to play a role in multiple signalling cascades. Here, we report on the first molecular and genetic characterisation of a plant Cullin 3. In contrast to fungi and animals, the genome of the model plant Arabidopsis thaliana contains two related CULLIN 3 genes, called CUL3A and CUL3B. We found that CUL3A is ubiquitously expressed in plants and that the CUL3A protein is also able to interact with RBX1 and certain Arabidopsis BTB-domain proteins. In order to determine the role of CUL3A in plant development, we used a reverse genetic approach and identified T-DNA insertion mutants. cul3a null mutants flower slightly latter than the control plants and their hypocotyls exhibit a reduced sensitivity to far red light. The viability of the cul3a mutant plants suggests functional redundancy between both CUL3 genes in plants. - Comparaison of mutant AtCul3a (T-DNA mutant of Versailles collection) and WS. Keywords: wt vs mutant comparison

2007-06-20 | GSE7974 | GEO

Cupriavidus sp. WS strain:WS

Project description:Cupriavidus sp. WS strain:WS Genome sequencing and assembly

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comparison ws vs haf2_gcn5-histone acetylation required for gene expression during germination

Project description:af31_haf2_gcn5 - comparison ws vs haf2_gcn5 - Genes whose expression during seed germination is affected by the mutation of two histone acetyltransferase genes GCN5 and HAF2 (the later encodes TAF1). - mRNA extraxted from 72h germinating seed of the mutants gcn5 and haf2 were used for comparison with Ws seed at the same satge. 2 repetitions techniques + 1 repetition biologique. Keywords: wt vs mutant comparison

2007-06-20 | GSE7977 | GEO

Transcription profiling of Arabidopsis thioredoxin reductase knock-out mutant

Project description:Transcriptomic study of a thioredoxin reductase knock-out mutant. Biological question : Thioredoxins are small redox proteins implicated in crucial pathways of cell life. They are reduced by a conserved flavoprotein named NADPH-dependent thioredoxin reductase (NTR). In order to give an insight into the functions of the NTR/thioredoxin pathway in Arabidopsis, we have used a reverse genetic approch. Both NTR genes (NTRA and NTRB) have been inactivated in the double ntra ntrb mutant. T-DNA lines have been provided by the SALK library. Surprisingly, this mutant shows a limited phenotype suggested that some additional redox pathways are involved in compensating the inactivation of the NTR/thioredoxin pathway. In order to isolate compensatory genes that would be transcriptionally induced in the ntra ntrb mutant, we have performed this CATMA project. Seeds of the wild-type Col-0 ecotype and of the ntra ntrb homozygote double mutant were sowed in soil. Three replicates of lines were made (Col-0 1, 2 and 3 ntra ntrb 1, 2 and 3) : plants were put at different places of the greenhouse and grown at different times. Germination was synchronized by 4 days at 4C and plants were grown during 17 days, until they reached a 6 rosette leaves stage. Entire plants (30 plants per sample) were harvested, frozen in liquid nitrogen and stored at -80C until extraction.

2005-09-15 | E-MEXP-365 | biostudies-arrayexpress

ntr-Transcriptomic study of a thioredoxin reductase knock-out mutant.

Project description:rs04-02_ntr - ntr - Thioredoxins are small redox proteins implicated in crucial pathways of cell life. They are reduced by a conserved flavoprotein named NADPH-dependent thioredoxin reductase (NTR). In order to give an insight into the functions of the NTR/thioredoxin pathway in Arabidopsis, we have used a reverse genetic approch. Both NTR genes (NTRA and NTRB) have been inactivated in the double ntra ntrb mutant. T-DNA lines have been provided by the SALK library. Surprisingly, this mutant shows a limited phenotype suggested that some additional redox pathways are involved in compensating the inactivation of the NTR/thioredoxin pathway. In order to isolate compensatory genes that would be transcriptionally induced in the ntra ntrb mutant, we have performed this CATMA project. - Comparison of the transcript profile of the ntra ntrb knock-out mutant vs Col-0 wild-type ecotype. Seeds of the wild-type Col-0 ecotype and of the ntra ntrb homozygote double mutant were sowed in soil. Three replicates of lines were made (Col-0 1, 2 and 3 ntra ntrb 1, 2 and 3) : plants were put at different places of the greenhouse and grown at different times. Germination was synchronized by 4 days at 4degreeC and plants were grown during 17 days, until they reached a 6 rosette leaves stage. Entire plants (30 plants per sample) were harvested, frozen in liquid nitrogen and stored at 80degreeC until extraction. Keywords: gene knock out,wt vs mutant comparison 3 dye-swap - CATMA arrays

2007-06-19 | E-GEOD-7998 | biostudies-arrayexpress

ntr-Transcriptomic study of a thioredoxin reductase knock-out mutant.

2007-06-20 | GSE7998 | GEO

Effect of ftr mutation on Arabidopsis transcriptome - Redox regulation in plants

Project description:au15-02_trx - effect of ftr mutation on arabidopsis trancriptome - Recherche nouvelles fonctions pour le système TRX plastidial. - - Comparison Mut1 vs sauv1 at the same developmental stage (8-10 leaves) as Mut1 at the time of sampling - Comparison Mut1 vs sauv1 at the same age (11 weeks) as Mut1 at the time of sampling - Comparison Mut2 vs sauv2 at the same developmental stage (8-10 leaves) as Mut1 at the time of sampling - Comparison Mut2 vs sauv2 at the same age (9 weeks) as Mut1 at the time of sampling Mut1 = ftrb Sauv1 = Col-0 Mut2 = ftra1.a2 Sauv2 = WT segregant from crossing between ftra1 (in WS genetic background) and ftra2 (in Col background)

2017-02-01 | GSE93183 | GEO

Susceptibility to photo-oxidative damage of mice lacking the Rod derived Cone Viability Factor gene Nxnl1

Project description:Rod-derived Cone Viability Factor is a trophic factor of the thioredoxins family that promotes the survival of cone photoreceptors. It is encoded by the nucleoredoxin-like gene 1 Nxnl1 which also encodes by alternative splicing for RdCVFL, for a thioredoxin enzyme that interacts with the protein TAU. The role of thioredoxins in the defense mechanism against oxidation led us to examine the retinal phenotype of the Nxnl1-/- mouse after photo-oxidative stress.

2014-02-12 | GSE54886 | GEO

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