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| Content Provider | PubMed Central |
|---|---|
| Author | Krinke, Ondřej Eric, Ruelland Olga, Valentová Chantal, Vergnolle Renou, Jean-pierre Taconnat, Ludivine Flemr, Matyáš Lenka, Burketová Alain, Zachowski |
| Abstract | Salicylic acid (SA) has a central role in defense against pathogen attack. In addition, its role in such diverse processes as germination, flowering, senescence, and thermotolerance acquisition has been documented. However, little is known about the early signaling events triggered by SA. Using Arabidopsis (Arabidopsis thaliana) suspension cells as a model, it was possible to show by in vivo metabolic phospholipid labeling with 33Pi that SA addition induced a rapid and early (in few minutes) decrease in a pool of phosphatidylinositol (PI). This decrease paralleled an increase in PI 4-phosphate and PI 4,5-bisphosphate. These changes could be inhibited by two different inhibitors of type III PI 4-kinases, phenylarsine oxide and 30 μ m wortmannin; no inhibitory effect was seen with 1 μ m wortmannin, a concentration inhibiting PI 3-kinases but not PI 4-kinases. We therefore undertook a study of the effects of wortmannin on SA-responsive transcriptomes. Using the Complete Arabidopsis Transcriptome MicroArray chip, we could identify 774 genes differentially expressed upon SA treatment. Strikingly, among these genes, the response to SA of 112 of them was inhibited by 30 μ m wortmannin, but not by 1 μ m wortmannin. |
| Related Links | http://dx.doi.org/10.1104/pp.107.100842 |
| Ending Page | 1359 |
| Page Count | 13 |
| Starting Page | 1347 |
| File Format | |
| ISSN | 00320889 |
| e-ISSN | 15322548 |
| Journal | Plant Physiology |
| Issue Number | 3 |
| Volume Number | 144 |
| Language | English |
| Publisher | American Society of Plant Biologists |
| Publisher Date | 2007-07-01 |
| Access Restriction | Open |
| Rights Holder | American Society of Plant Biologists |
| Subject Keyword | Plant Science Genetics Physiology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Physiology Plant Science |
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