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An Ancient COI1-independent Function for Reactive Electrophilic Oxylipins in Thermotolerance [array]

ABSTRACT: Seeds of the double mutant opr3-3 coi1-1 were germinated in Johnson media supplemented with 0.5 µM coronatine, to select homozygous coi1-1 plants, at 21°C under long-day conditions (16-h light/8-h dark)

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE141429 | GEO | 2020/03/04

REPOSITORIES: GEO

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An Ancient COI1-independent Function for Reactive Electrophilic Oxylipins in Thermotolerance

Project description:This SuperSeries is composed of the SubSeries listed below.

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An Ancient COI1-independent Function for Reactive Electrophilic Oxylipins in Thermotolerance [seq]

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An Ancient COI1-independent Function for Reactive Electrophilic Oxylipins in Thermotolerance

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An Ancient COI1-independent Function for Reactive Electrophilic Oxylipins in Thermotolerance [array]

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The Genetic Network Controlling the Arabidopsis Transcriptional Response to Pseudomonas syringae pv. maculicola

Project description:Expression profiling of wild-type plants and mutants with defects in key components of the defense signaling network was used to model the Arabidopsis network 24 hours after infection by Pseudomonas syringae pv. maculicola strain Psm ES4326. Results using the Affymetrix ATH1 array revealed that expression levels of most pathogen-responsive genes were affected by mutations in coi1, ein2, npr1, pad4, or sid2. These five mutations defined a small number of different expression patterns displayed by the majority of pathogen-responsive genes. P. syringae pv. tomato strain Pst DC3000 elicited a much weaker salicylic acid response than Psm ES4326. Additional mutants were profiled using a custom array. Profiles of pbs3 and ndr1 revealed major effects of these mutations and allowed PBS3 and NDR1 to be placed between the EDS1/PAD4 node and the SA synthesis node in the defense network. Comparison of coi1, dde2, and jar1 profiles showed that many genes were affected by coi1, but very few were affected by dde2 or jar1. Profiles of coi1 plants infected with Psm ES4326 were very similar to those of wild-type plants infected with bacteria unable to produce the phytotoxin coronatine, indicating that essentially all COI1-dependent gene expression changes in this system are caused by coronatine.

2008-07-18 | GSE11009 | GEO

Novel JAZ co-operativity and unexpected JA dynamics underpin Arabidopsis defence responses to Pseudomonas syringae infection

Project description:Pathogens target phytohormone signalling pathways to promote disease. Plants deploy salicylic acid (SA) mediated defences against biotrophs. Pathogens antagonise SA immunity by activating jasmonate signalling, e.g. Pseudomonas syringae pv. tomato DC3000 produces coronatine (COR), a jasmonate (JA) mimic. This study found unexpected dynamics between SA, JA and COR and co-operation between JAZ jasmonate repressor proteins during DC3000 infection. JA did not accumulate until late in the infection process and was higher in leaves challenged with coronatine deficient P. syringae or in the more resistant JA receptor mutant coi1. JAZ regulation was complex and coronatine alone was insufficient to sustainably induce JAZs.

2015-08-28 | GSE72461 | GEO

The Genetic Network Controlling the Arabidopsis Transcriptional Response to Pseudomonas syringae pv. maculicola

2008-07-18 | E-GEOD-11009 | biostudies-arrayexpress

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