GEO DataSets

(Submitter supplied) Using the ATH1 Affymetrix microarrays consisting of about 23,000 genes, we examined the response of Arabidopsis seedlings to chito-tetramers, chito-octamers and hydrolyzed chitin after 30 min of treatment. Keywords = chitin Keywords = defense Keywords = elicitor Keywords = mutant Keywords = powdery mildew Keywords = Erysiphe cichoracearum Keywords: ordered

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS1531

Platform:

GPL198

9 Samples

Download data: CEL, EXP

Analysis of 14-day-old Columbia-0 seedlings treated with hydrolyzed crab-shell chitin or chito-octamer. Chitin is a major component of fungal walls and insect exoskeletons. Results provide insight into the signaling pathways involved in activating defense genes in response to chito-oligomers.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 3 agent sets

Platform:

GPL198

Series:

GSE2538

9 Samples

Download data: CEL, EXP

(Submitter supplied) We used Arabidopsis full-genome microarrays to characterize plant transcript accumulations in map65-3 and ugt76b1 mutants, 3 days after water treatment and inoculation with the biotrophic oomycete downy mildew pathogen, Hyaloperonospora arabidopsidis (Hpa)

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

12 Samples

Download data: CEL

(Submitter supplied) Mature grapevine berries at the harvesting stage (MB) are very susceptible to the gray mold fungus Botrytis cinerea while veraison berries (VB) are not. We conducted simultaneous microscopic and transcriptomic analyses of the pathogen and the host to investigate the infectious process developed by B. cinerea on MB versus VB, and the plant defense mechanisms deployed to stop the fungus development. On the pathogen side, our genome-wide transcriptomic data revealed that B. more...

Organism:

Vitis vinifera

Type:

Expression profiling by array

Platform:

GPL13936

18 Samples

Download data: PAIR

(Submitter supplied) Arabidopsis does not support the growth and asexual reproduction of the barley pathogen, Blumeria graminis f. sp. hordei Bgh). A majority of germlings fail to penetrate the epidermal cell wall and papillae. To gain additional insight into this interaction, we determined whether the salicylic acid (SA) or jasmonate (JA)/ethylene (ET) defence pathways played a role in blocking barley powdery mildew infections. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

4 related Platforms

24 Samples

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(Submitter supplied) Chitin, a polymer of N-acetyl-glucosamne, is a component of the cell walls of many plant fungal pathogens. During the infection process, the released chitin fragments (such as chitooctaose) from fungal cell walls by plant enzymes can trigger plant defense response and gene activation. The current work studies the regulation of Arabidopsis genes by the purified chitin fragment chitooctaose. We used the Affymetric Arabidopsis whole gene arrays to study the gene expression caused by chitin (chitooctaose). more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS2101

Platform:

GPL198

6 Samples

Download data

Analysis of 14-day-old Col-0 seedlings treated with 1 uM chitooctaose for 3 minutes. Chitooctaose, a chitin oligomer, is released by plant enzymes from the cell wall of many plant fungal pathogens. Results provide insight into the plant defense response to fungal elicitors.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 agent sets

Platform:

GPL198

Series:

GSE4746

6 Samples

Download data

(Submitter supplied) A LysM Receptor-like Kinase Mediates Chitin Perception and Fungal Resistance in Arabidopsis Jinrong Wan,1 Xuecheng Zhang,1 David Neece,2 Katrina M. Ramonell,3 Steve Clough,2,4 Sung-yong Kim,1 Minviluz Stacey,1 and Gary Stacey1* 1Division of Plant Sciences, National Center for Soybean Biotechnology, C.S. Bond Life Sciences Center, University of Missouri-Columbia, Columbia, MO 65211, USA 2Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA 3Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35487, USA 4US Department of Agriculture, Soybean/Maize Germplasm, Pathology and Genetics Research, Urbana, IL 61801, USA *To whom correspondence should be addressed. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

12 Samples

Download data: CEL

(Submitter supplied) There were two genotypes: (1) Columbia-0, wild-type (C) (2) pmr4-1 mutant (P), callose synthase deficient mutant (Vogel and Somerville (2000) Proc. Natl. Acad. Sci., USA 97: 1897). There were two treatments: (1) uninoculated (U) (2) 3 days after inoculation with the powdery mildew pathogen, Erysiphe cichoracearum, race UCSC (I). There were four biological replicates, labeled 1, 2, 3 or 4. Examples of the sample labels are: CU1 = Columbia-0, uninoculated, replicate 1 CI2 = Columbia-0, 3 days after inoculation with powdery mildew, replicate 2 PU3 = pmr4-1, uninoculated, replicate 3 PI4 = pmr4-1, 3 days after inoculation with powdery mildew, replicate 4. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS417

Platform:

GPL198

16 Samples

Download data: CEL, CHP, EXP, RPT

Examination of disease resistance mechanisms in powdery mildew resistant 4 (pmr4), a mutant lacking pathogen-induced callose. Infected and uninfected pmr4-1 and wildtype plants examined. Activation of salicylic acid signal transduction pathway implied.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 infection, 2 strain sets

Platform:

GPL198

Series:

GSE431

16 Samples

Download data: CEL, CHP, EXP, RPT

(Submitter supplied) Analysis of 14-day-old Columbia-0 seedlings treated with chito-tetramer.Results provide insight into the signaling pathways involved in plant devlopment in response to the four-mer. Chitin is the second biopolymer most abundant at nature, after cellulose, forming part of insect exosqueletons, crustacean shells, krill and fungal spores where is present as a high molecular weight molecule. Previously we showed that Arabidopsis defense related clusters of genes were induced by high molecular weight chitin (CHH) or 8mer oligosaccharides similarly (Ramonell et al., 2005), some of those genes were essential for effective defense against phytopathogenic fungus (Berrocal-Lobo et al., 2010). more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

6 Samples

Download data