GEO DataSets

(Submitter supplied) The root epidermis of Arabidopsis provides a simple and experimentally useful model for studying the molecular basis of cell fate and differentiation. The goal of this study was to define the transcript changes in the root epidermis of mutants associated with root epidermis cell specification, including mutants that lack a visible phenotypic alteration (try, egl3, myb23, and ttg2). Transcript levels were assessed by purifying populations of root epidermal cells using fluorescence-based cell-sorting with the WER::GFP transgene. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL13838

24 Samples

Download data: CEL

(Submitter supplied) The root epidermis of Arabidopsis provides a simple and experimentally useful model for studying the molecular basis of cell fate and differentiation. The goal of this study was to define the larger gene regulatory network that governs the differentiation of the root hair and non-hair cell types of the Arabidopsis root epidermis. Transcript levels in the root epidermis of wild-type and mutant lines were assessed by purifying populations of root epidermal cells using fluorescence-based cell-sorting. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL13838

75 Samples

Download data: CEL

(Submitter supplied) Auxin-dependent transcript abundance was assayed by transferring 6 day old Arabidopsis grown on a a nylon mesh to IAA-containing or control media

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

48 Samples

Download data: CEL

(Submitter supplied) Global gene expression data from 7-day old light-grown liquid cultured seedlings treated with or without auxin (5µM IAA) for 2 h. This SuperSeries is composed of the SubSeries listed below.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

36 Samples

Download data: CEL

(Submitter supplied) RNA samples were extracted from liquid cultured seedlings treated with or without auxin (5µM IAA) for 2 h. Lines used for this study: Columbia wild-type nph4-1(arf7) single mutant arf19-1 single mutant nph4-1 arf19-1 double mutant Treatment: Control (EtOH) Auxin treated (5µM IAA) Keywords = Auxin Keywords = Auxin response factor Keywords: parallel sample

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

24 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

52 Samples

Download data: CEL, CHP

(Submitter supplied) We performed a time course analysis (TC data set) of the response of whole seedling roots to -Fe at 6 time points after transfer (3, 6, 12, 24, 48, and 72 hours). Little is known about how developmental cues affect the way cells interpret their environment. Here we characterize the transcriptional response of different cell layers and developmental stages of the Arabidopsis root to high salinity and find that transcriptional responses are highly constrained by developmental parameters. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

14 Samples

Download data: CEL, CHP

(Submitter supplied) Cell-type specific transcriptional profiles were generated by FACS (Fluorescence Activated Cell Sorting) sorting of roots that express cell-type specific GFP-reporters. Five different GFP-reporter lines were utilized allowing us to obtain transcriptional profiles for cells in all radial zones of the root. FACS cell populations were isolated from roots grown under standard conditions or roots that had been transfered to -Fe media for 24 hours. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

16 Samples

Download data: CEL, CHP

(Submitter supplied) To gain a genome-scale understanding of the role that developmental processes play in regulating stimulus response, we examined the effect of -Fe stress on gene expression along the longitudinal axis of the root. Since roots grow from stem cells located near the tip, the position of cells along the longitudinal axis can be used as a proxy for developmental time, with distance from the root tip correlating with increased differentiation. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

16 Samples

Download data: CEL, CHP

(Submitter supplied) In order to estimate the effects of protoplasting and FACS sorting procedures on -Fe regulated gene expression we generated expression profiles for whole roots that had been treated with -Fe for 24 hours and for roots that were protoplasted and FACS sorted after the initial 24 hour -Fe treatment. Little is known about how developmental cues affect the way cells interpret their environment. Here we characterize the transcriptional response of different cell layers and developmental stages of the Arabidopsis root to high salinity and find that transcriptional responses are highly constrained by developmental parameters. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

6 Samples

Download data: CEL, CHP

(Submitter supplied) We performed an expression analysis of the response of seedling root tips to 1 hour of treatment with 140mM NaCl using mutants defective in root hair patterning. Cells are amazingly adept at integrating both external and internal cues to regulate transcriptional states. While internal processes such as differentiation and cell-type specification are generally understood to have an important impact on gene expression, very little is known about how cells utilize these developmental cues to regulate responses to external stimuli. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

16 Samples

Download data: CEL, CHP

(Submitter supplied) We performed a time course analysis (TC data set) of the response of whole seedling roots to 140mM NaCl at 5 time points after transfer (30 minutes, 1, 4, 16 and 32 hours). Cells are amazingly adept at integrating both external and internal cues to regulate transcriptional states. While internal processes such as differentiation and cell-type specification are generally understood to have an important impact on gene expression, very little is known about how cells utilize these developmental cues to regulate responses to external stimuli. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS3216

Platform:

GPL198

12 Samples

Download data: CEL, CHP

(Submitter supplied) Cell-type specific transcriptional profiles were generated by FACS (Fluorescence Activated Cell Sorting) sorting of roots that express cell-type specific GFP-reporters. Six different GFP-reporter lines were utilized allowing us to obtain transcriptional profiles for cells in all radial zones of the root. FACS cell populations were isolated from roots grown under standard conditions or roots that had been transfered to media supplemented with 140 mM NaCl for 1 hour. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

36 Samples

Download data: CEL, CHP

(Submitter supplied) To gain a genome-scale understanding of the role that developmental processes play in regulating stimulus response, we examined the effect of salt stress on gene expression along the longitudinal axis of the root. Since roots grow from stem cells located near the tip, the position of cells along the longitudinal axis can be used as a proxy for developmental time, with distance from the root tip correlating with increased differentiation. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

16 Samples

Download data: CEL, CHP

(Submitter supplied) In order to estimate the effects of protoplasting and FACS sorting procedures on salt regulated gene expression we generated expression profiles for whole roots that had been treated with salt for 1 hour and for roots that were protoplasted and FACS sorted after the initial 1 hour salt treatment. Cells are amazingly adept at integrating both external and internal cues to regulate transcriptional states. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

4 Samples

Download data: CEL, CHP

Analysis of whole roots from 5-day-old Columbia seedlings subjected to 140 mM NaCl for up to 32 hours. High salinity is an important agricultural contaminant with complex effects on root physiology. Results provide insight into molecular mechanisms underlying the salt stress response in whole root.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 stress, 6 time sets

Platform:

GPL198

Series:

GSE7642

12 Samples

Download data: CEL, CHP

(Submitter supplied) Vascular cambium is a secondary meristem which produces xylem (wood) inwards and phloem (bark) outwards. The activity of cambium leads to expansion in the diameters in plants, that is, secondary growth, and thus contributes to biomass increase. The regulation of cambium development is at multilevel including phytohormones and peptide-receptor kinase (CLE41/44-PXY) signalling pathways. However, only limited progress has been made on the transcriptional regulation level. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

18 Samples

Download data: CEL, CHP

(Submitter supplied) The expression levels of Arabidopsis thaliana (Col-0) genes in several developmental stages during the seed-to-seedling transition were measured by using high-density Affymetrix® arrays (Aragene.st1.1). We used a time-series of microarrays to gain temporal resolution and identify relevant genes in the seed-to-seedling transition.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL19371

21 Samples

Download data: CEL

(Submitter supplied) The MYB gene family encodes transcription factors with a diverse range of functions in Arabidopsis. This study demonstrated that MYB5, which is expressed in trichomes and seeds, plays a central role in trichome and seed development. A microarray analysis of myb5 seeds identified other members of the MYB5 regulatory network.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

7 Samples

Download data: CEL, CHP

(Submitter supplied) We analysed the transcriptome of dry seeds (the end product of seed maturation) of three genotypes with different DOG1 expression levels. These included the WT Ler (low DOG1 expression), the near isogenic line NILDOG1-Cvi (strong DOG1 expression) and the non-dormant dog1-1 mutant (absence of DOG1 expression). NILDOG1-Cvi is the Ler WT containing an introgression of the Cvi accession on chromosome 5, which includes the DOG1 gene (Bentsink et al., 2006). more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

9 Samples

Download data: CEL