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Barely leaf dark-induced senescence

ABSTRACT: Time-course transcriptional profiling of senescing barley leaves. In this model, the senescence process was induced by continued incubation of the seedlings in darkness. Plant samples for the expression analysis were collected before senescence induction (Day 0) and after 3,7 and 10 days of incubation in the dark. The goal was to find the genes differentially expressed during the senescence process . Additionally, a list of the genes with the invariant expression was generated as a resource for selecting references suitable for qPCR or ddPCR experiments. Time-course experiment, two-color, common reference design. All of the data were obtained from material collected in three independent, time-separated leaf senescing experiments (biological replicates). In each replicate, samples from senescing leaves (3 Days, 7 Days, 10 Days) were compared to samples collected before the senescence induction (Day 0). 3 biological replicates.Cy5-labeled samples of interest (Day 0, Day 3, Day 7 and Day 10 from each biological replicate) were each hybridized against a Cy3-labeled common reference (RNA pool of all samples) on a total of 12 microarrays.

ORGANISM(S): Hordeum vulgare

SUBMITTER: Agnieszka Zmienko

PROVIDER: E-GEOD-62539 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Barley leaf dark-induced senescence

Project description:Time-course transcriptional profiling of senescing barley leaves. In this model, the senescence process was induced by continued incubation of the seedlings in darkness. Plant samples for the expression analysis were collected before senescence induction (Day 0) and after 3,7 and 10 days of incubation in the dark. The goal was to find the genes differentially expressed during the senescence process . Additionally, a list of the genes with the invariant expression was generated as a resource for selecting references suitable for qPCR or ddPCR experiments.

2014-10-22 | GSE62539 | GEO

Analysis of isolated Plastoglobules from Arabidopsis thaliana WT and M48 null mutants.

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2019-04-09 | PXD003684 | Pride

Dark-induced senescence time course of ANAC017 mutant lines in Arabidopsis

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2021-05-06 | E-MTAB-8478 | biostudies-arrayexpress

Transcription profiling of Arabidopsis leaf senescence

Project description:1. Comparison of two near isogenic lines between which the genome differs only for the region of the leaf-yellowing QTL Y3-4 on chromosome III. Experiment description: The lines HIF404-Sha and HIF404-Bay were grown on 3 mM nitrate in growth chamber according to Loudet et al . (2002, TAG 104:1173-84) until phenotypic yellowing symptoms differed between them. Plants were collected 49 days after sowing. 2. Comparison of sugar effect on the leaf senescence progress using three RIL from the Bay-0 x shahdara population that exhibited differential leaf yellowing symptoms. Experiment description: The recombinant inbred lines RIL310 (hypersenescing and early-senescing), RIL232 (early--senescing) et RIL045 (late-senescing) were grown in petri dishes (4,7 mM Nitrogen, with (LNG) or without (LN) glucose 2% until some difference of Fv/Fm trait can be observed (Wingler et al. 2004, New Phytol, 161 : 781-789). Growth experiments were performed in A. Wingler lab, University College of London.

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Integrated transcriptomics and miRNAomics provide insights into the regulatory networks associated with coleoptile senescence in rice

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2016-01-09 | E-GEOD-72792 | biostudies-arrayexpress

A Local Regulatory Network Around Three NAC Transcription Factors in Stress Responses and Senescence in Arabidopsis leaves (Dark Induced Senescence).

Project description:A network model has been generated that describes the immediate gene expression cascade surrounding three similar but distinct NAC transcription factors that have roles to play in leaf senescence and in many stress responses in Arabidopsis. ANAC019, ANAC055 and ANAC072 belong to the same clade of NAC domain genes and have overlapping expression patterns. A combination of promoter DNA/protein interactions identified using yeast 1 hybrid analysis and modeling using gene expression time course data has been used to predict the regulatory network upstream of these genes. Similarities and divergence in regulation during a variety of stress responses are predicted by different combinations of upstream transcription factors binding and also by the modeling. Mutant analysis with potential upstream genes was used to test and confirm some of the predicted interactions.. Gene expression measurements in mutants of ANAC019 and ANAC055 at different times during leaf senescence have shown a distinctly different role for each of these genes. To assess mutant response to Dark Induced Senescence (DIS), leaf5 from transplanted rosettes, subjected to dark conditions, from Col-0, myb2 (genotype IM24) and myb108 (genotype BOS1) knockout plants, were photographically assessed for red/green ratio. When the average ratio for Col-0 samples was >0.8, leaf 5 for Col-0, myb2 and myb108 lines was harvested (4 biological replicates). The same sampling procedure was then performed on consecutive days to sample as senescence progressed. Analysis of expression differences between Col-0 and myb2 and Col-0 and myb108 under each condition, using dye swaps, was performed using the R Bioconductor package limmaGUI (Wettenhall and Smyth, 2004).

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2021-11-24 | PXD029200 | Pride

Spatial Coupling of mTOR and Autophagy Augments Secretory Phenotypes

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2011-05-04 | E-GEOD-28464 | biostudies-arrayexpress

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