GEO DataSets

(Submitter supplied) Plants can be primed by a stress cue to mount a faster and stronger activation of defense mechanisms upon a subsequent stress. A crucial component of such stress priming is the modified reactivation of genes upon recurring stress, a phenomenon known as transcriptional memory. The transcriptional memory in response to heat stress is not clear at the genome scale. We used microarrays to identify genes that showed transcriptional memory in response to recurring heat stress.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

17 Samples

Download data: CEL

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

Organism:

Arabidopsis thaliana

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19580

37 Samples

Download data: BW

(Submitter supplied) Transcriptional regulation is a key aspect of environmental stress responses. Heat stress (HS) induces transcriptional memory that allows plants to respond more efficiently to a recurrent HS. In light of more frequent temperature extremes due to climate change, improving heat tolerance in crops is an important breeding goal. However, not all HS-inducible genes show sustained induction/transcriptional memory and it is unclear what distinguishes memory and non-memory genes. more...

Organism:

Arabidopsis thaliana

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19580

24 Samples

Download data: BW

(Submitter supplied) Transcriptional regulation is a key aspect of environmental stress responses. Heat stress (HS) induces transcriptional memory that allows plants to respond more efficiently to a recurrent HS. In light of more frequent temperature extremes due to climate change, improving heat tolerance in crops is an important breeding goal. However, not all HS-inducible genes show sustained induction/transcriptional memory and it is unclear what distinguishes memory and non-memory genes. more...

Organism:

Arabidopsis thaliana

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19580

13 Samples

Download data: BW

(Submitter supplied) The transcript levels of 560 genes were decreased (less than two-fold), while those of 312 genes were increased (more than two-fold) in the KO-HsfA1d/A1e plants compared with the wild-type plants. The transcript levels of HsfA2, HsfA7a, HsfA7b, HsfB1, and HsfB2a were down-regulated in the KO-HsfA1d/A1e

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

2 Samples

Download data: CEL

(Submitter supplied) In nature, plants are often exposed to recurring adverse environmental conditions. Acclimation to high temperature stress entails transcriptional responses that are mediated by heat-shock transcription factors (HSFs), and they are primed to better withstand subsequent stress events. This heat stress (HS)-induced transcriptional memory results in more efficient re-induction of transcription upon recurring HS. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing

Platform:

GPL28290

36 Samples

Download data: TXT

(Submitter supplied) Adaptive plasticity in stress responses is a key element of plant survival strategies. For instance, moderate heat stress (HS) primes a plant to acquire thermotolerance, which allows subsequent survival of more severe HS conditions. Acquired thermotolerance is actively maintained over several days (HS memory) and involves the sustained induction of memory-related genes. We find FORGETTER3/ HEAT SHOCK TRANSCRIPTION FACTOR A3 (FGT3/HSFA3) to be specifically required for physiological HS memory and maintaining high memory-gene expression during the days following a HS exposure. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24025

48 Samples

Download data: TXT

(Submitter supplied) The expression of heat-shock proteins (Hsps) induced by a non-lethal heat treatment confers acquired thermotolerance (AT) to organisms against a subsequent challenge of otherwise lethal temperature. After stress signal lifted, AT gradually decayed with the decline of Hsps during recovery period. The duration of AT may be critical for sessile organisms, such as plants, to survive repeated heat stress in the environment. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS2564

Platform:

GPL198

12 Samples

Download data

Analysis of HsfA2 null mutant following acclimative heat treatment at 37 degrees C for 1 hour, recovery at 24 degrees C for 2 days, and heat shock at 44 degrees C for 45 minutes. Results provide insight into role of HsfA2 in acquired thermotolerance induced by non-lethal heat treatment.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 genotype/variation, 3 protocol sets

Platform:

GPL198

Series:

GSE4760

12 Samples

Download data

(Submitter supplied) In order to study the improtance of HSFA6b in salt and heat stresses of arabidopsis, we generated the HSFA6b-overexpression (HSFA6b-OE) and dominant-negative (HSFA6b-RD) mutant lines. We used microarray to investigate how genes regulated by HSFA6b after NaCl or heat shock treatment.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

18 Samples

Download data: CEL, TXT

(Submitter supplied) Elevated temperature occurring at reproductive stage has great impact on gametophyte development and therefore ultimate fruit or seed set in plants, the underlying molecular mechanisms are less understood. We investigated the effect of elevated temperature stress on reproductive development in Arabidopsis with tissue-specific transcriptome profiling and observed distinct response patterns between vegetative and reproductive tissues. more...

Organism:

Arabidopsis thaliana

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL21179

7 Samples

Download data: BW

(Submitter supplied) Elevated temperature occurring at reproductive stage has great impact on gametophyte development and therefore ultimate fruit or seed set in plants, the underlying molecular mechanisms are less understood. We investigated the effect of elevated temperature stress on reproductive development in Arabidopsis with tissue-specific transcriptome profiling and observed distinct response patterns between vegetative and reproductive tissues. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21179

36 Samples

Download data: TXT

(Submitter supplied) Plants and animals share similar mechanisms in the heat-shock (HS) response, such as synthesis of the conserved HS proteins (Hsps). However, because plants are confined to a growing environment, in general they require unique features to cope with heat stress. We have analyzed the function of a novel Hsp, heat-stress-associated 32-kD protein (Hsa32), which is highly conserved in land plants but absent in most other organisms. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS1982

Platform:

GPL198

8 Samples

Download data

Analysis of heat-stress-associated 32-kD protein (Hsa32) knockout mutant seedlings subjected to heat shock at 37 degrees C for 2 hours. Results provide insight into the role of Hsa32 in acquired thermotolerance.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 genotype/variation, 2 temperature sets

Platform:

GPL198

Series:

GSE4062

8 Samples

Download data

(Submitter supplied) To identify genes associated with the heat stress (HS) memory, transcript profiling using Affymetrix ATH1 microarrays was performed to compare Col-0 seedlings after the priming stimulus with control plants (unprimed).

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

8 Samples

Download data: CEL, TXT

(Submitter supplied) Plants often experience recurrent stressful events, for example during heat waves. They can adapt to such recurrent heat stress (HS), allowing subsequent survival of more severe HS conditions. At certain genes HS induces sustained expression for several days beyond the actual HS. This transcriptional memory is associated with hyper-methylation of histone H3 lysine 4 (H3K4me3), however, how this is maintained for extended periods of time is unclear. more...

Organism:

Arabidopsis thaliana

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19580

24 Samples

Download data: BW

(Submitter supplied) In order to study the importance of HSFA1 in thermotolerance in Arabidopsis, we generated the HSFA1a, b, d and e quadruple mutant (QK). QK is very sensitive to heat. Therefore, we used microarray to study how many genes regulated by HSFA1 after heat shock.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

12 Samples

Download data: CEL

(Submitter supplied) Heat stress is a great threat to plant growth because of their sessile lifestyle. Here, we show that histone methyltransferases SDG25 and ATX1 regulate gene expression and antagonize DNA remethylation under recovery stage after long-term high temperature treatment by catalyzing the methylation of histone H3K4 loci.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing; Methylation profiling by high throughput sequencing

Platform:

GPL21785

28 Samples

Download data: TXT, XLSX

(Submitter supplied) Plants must continuously react to the ever-fluctuating nature of their environment. Repeated exposure to stressful conditions can lead to priming, whereby prior encounters heighten a plant’s ability to respond to future events. A clear example of priming is provided by the model plant species Arabidopsis thaliana (Arabidopsis), in which photosynthetic and photoprotective responses are enhanced following recurring light stress. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing; Methylation profiling by high throughput sequencing

Platform:

GPL19580

18 Samples

Download data: BED, TXT