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Arabidopsis thaliana

ABSTRACT: Early ETI and PTI responses in Arabidopsis thaliana camta3-D (sr1-4d) mutant

PROVIDER: PRJNA358395 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR5123620.fastq.gz	Fastqsanger.gz
	SRR5123630.fastq.gz	Fastqsanger.gz
	SRR5123621.fastq.gz	Fastqsanger.gz
	SRR5123631.fastq.gz	Fastqsanger.gz
	SRR5123622.fastq.gz	Fastqsanger.gz

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Interactions between effector-triggered immunity (ETI) and pattern-triggered immunity (PTI) in an Arabidopsis dde2 ein2 pad4 sid2 mutant

Project description:We observed inhibition of the hypersensitive response (a typical ETI response) by PTI signaling in an Arabidopsis quadruple mutant dde2 ein2 pad4 sid2 (quad). Thus, we designed an experiment to see the interaction between ETI and PTI signaling at the transcriptome level. The Arabidopsis line dde2 ein2 pad4 sid2 Ed-AvrRpt2 (quadAvrRpt2) was used (Ed-AvrRpt2, estradiol-inducible AvrRpt2 transgene). In this plant line, ETI can be elicited by estradiol (Ed) treatment via in planta expression of AvrRpt2. Transcriptome responses to PTI only, ETI only, and PTI+ETI together were recorded.

2017-08-07 | GSE98075 | GEO

Early ETI and PTI responses in Arabidopsis thaliana camta3-D (sr1-4d) mutant

Project description:Innate immune responses of plant cells confer the first line of defence against pathogens. Signals generated by activated receptors are integrated inside the cell and converge on transcriptional programmes in the nucleus. In Arabidopsis, the CAMTA family of transcription factors plays a pivotal function in immunity. CAMTA binding motifs are highly enriched in the genes quickly induced during ETI and PTI. Using RNA-seq, we investigated the role of CAMTA TFs during the early ETI and PTI transcriptional responses.

2017-12-11 | GSE92702 | GEO

An immune-inducible trihelix transcription factor suppresses bacterial resistance in Arabidopsis thaliana

Project description:The plant innate immunity consists of the two interconnected mechanisms, pattern-triggered immunity (PTI) and effector-triggered immunity (ETI). Although much is known about how plants trigger immune responses upon pathogen recognition, the genetic program by which plants avoid an overshoot in pathogen-triggered immune responses remains largely unknown. Here, we discovered a trihelix transcription factor, GT-3a, as an immune-inducible negative regulator of bacterial resistance in Arabidopsis thaliana. Analysis of public RNA-seq data revealed that GT-3a is specifically induced by ETI activation not by PTI activation. Overexpression of GT-3a suppressed resistance against the bacterial pathogen Pseudomonas syringae pv. tomato DC3000 (Pto) and Pto-elicited expression of salicylic acid (SA)-responsive genes. Our results suggest that transcriptional induction of GT-3a circumvents the overshooting of SA-mediated defense responses during ETI.

2024-02-18 | GSE248054 | GEO

Expression analysis of Arabidopsis plants infected with Pseudomonas syringae pv. tomato DC3000 (Pto) strains

Project description:Effector-Triggered Immunity (ETI) and Pattern-Triggered Immunity (PTI) are well-defined modes of plant immunity triggered by recognition of pathogen effector proteins and microbe-associated molecular patterns, respectively. While ETI and PTI network extensively share signaling components, the shared components are used in different ways, resulting in distinct network properties in the model plant Arabidopsis: immunity is highly robust against network perturbations in ETI but relatively sensitive in PTI. However, the molecular mechanism how the shared network leads to the different properties is not known. Here we show that salicylic acid (SA) reponsive genes can respond in the absense of SA during ETI. A 24 DNA microarray study using total RNA from Arabidopsis wildtype Col-0 and sid2-2 mutant infected with Pto hrcC-, Pto EV, Pto AvrRpt2 or water.

2014-07-29 | E-GEOD-40544 | biostudies-arrayexpress

Expression analysis of Arabidopsis transgenic plants carrying DEX-inducible MKK4DD in Col or sid2 background treated with DEX or control

Project description:Effector-Triggered Immunity (ETI) and Pattern-Triggered Immunity (PTI) are well-defined modes of plant immunity triggered by recognition of pathogen effector proteins and microbe-associated molecular patterns, respectively. While ETI and PTI network extensively share signaling components, the shared components are used in different ways, resulting in distinct network properties in the model plant Arabidopsis: immunity is highly robust against network perturbations in ETI but relatively sensitive in PTI. However, the molecular mechanism how the shared network leads to the different properties is not known. Here we show that sustained MAPK activation compensate salicylic acid (SA) signaling. A 12 DNA microarray study using total RNA from Arabidopsis transgenic plants carrying DEX-inducible MKK4DD in Col or sid2-2 background treated with DEX or control.

2014-07-29 | E-GEOD-40547 | biostudies-arrayexpress

Expression analysis of Arabidopsis plants infected with Pseudomonas syringae pv. tomato DC3000 (Pto) strains

2014-07-29 | GSE40544 | GEO

Two unequally redundant 'helper' immune receptor families mediate Arabidopsis intracellular 'sensor' immune receptor functions

Project description:Investigate the function of RNLs in transcriptional reprogramming during Pf0-1-induced PTI and ETI, using time-resolved transcriptomics. To do so we subjected Col-0, adr1 triple, nrg1.1 nrg1.2 and helperless mutants to infections with Pf0-EV (RNL-(in)dependent PTI), Pf0-AvrRps4 (fully RNL-dependent ETI + PTI), Pf0-AvrRpt2 (partial RNL-dependent ETI + PTI) or Pf0-AvrRpm1 (RNL-independent ETI + PTI).

2020-06-22 | GSE151885 | GEO

Genome-wide expression analysis of PTI and ETI responses in wild type and PRR-deficient Arabidopsis plants

Project description:Purpose: The goal of this study is to demonstrate the global expression profile of Arabidopsis wild type and PRR mutant plants in response to PTI- and ETI-eliciting strains of Pseudomonas syringae pv tomato (Pst) bacterium. Methods: Four-week-old Arabidopsis plant leaves were infiltrated with sterile water (Mock) or different Pst strains and harvested at 3h or 6h after infiltration for RNA extraction and deep sequencing by Illumina. Raw data were cleaned up and trimmed and reads were mapped to Arabidopsis genome. Gene expression levels were calculated using the TPM method (Transcripts per Kb of exon model per Million mapped reads). Results and Conclusions: This study showed that Pst DC3000 D36E and D36E(avrRpt2) strains both induced significant gene expression changes (with changes of more than 3000 and 7000 genes respectively) in Col-0 plant, and D36E(avrRpt2) strain induced stronger expression changes globally. Furthermore, many genes are differentially regulated in the PRR mutant plants in response to D36E inoculation compared with wild type plant; however, D36E(avrRpt2) inoculation induced very similar expression patterns in two genotypes, suggesting that ETI can largely restore PTI-associated gene expression in the PRR mutant plant. In addition, we also found that ETI can largely induce the expression levels of many key PTI signaling components.

2021-01-18 | GSE142747 | GEO

Expression analysis of Arabidopsis transgenic plants carrying DEX-inducible MKK4DD in Col or sid2 background treated with DEX or control

Project description:Effector-Triggered Immunity (ETI) and Pattern-Triggered Immunity (PTI) are well-defined modes of plant immunity triggered by recognition of pathogen effector proteins and microbe-associated molecular patterns, respectively. While ETI and PTI network extensively share signaling components, the shared components are used in different ways, resulting in distinct network properties in the model plant Arabidopsis: immunity is highly robust against network perturbations in ETI but relatively sensitive in PTI. However, the molecular mechanism how the shared network leads to the different properties is not known. Here we show that sustained MAPK activation compensate salicylic acid (SA) signaling.

2014-07-29 | GSE40547 | GEO

Arabidopsis thaliana strain:Col-0 Transcriptome or Gene expression

Project description:Arabidopsis thaliana infiltrated with different strains of DC3000 were used to elicit PTI, ETI, or a disease response compared to a mock control. This experiment was carried out in both Col-0 wild-type plants as well as mutants deficient in non-sense mediated decay via disruption of the promoter of upf1 (genotype background upf1-5). To identify differentially expressed and alternatively spliced transcripts elicited by bacterial infection, the NMD-impaired and wild-type host transcriptomes were profiled using RNA-seq. Wild-type and upf1-5 mutant plants were independently challenged with pathogenic (DC3000 COR-) or non-pathogenic P. syringae strains (DC3000 COR- ÎhrpS and DC3000 COR- avrPphB).

2014-10-06 | E-MTAB-4416 | biostudies-arrayexpress

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