Clayton, Helen and Knight, Marc R. and Knight, Heather and McAinsh, Martin and Hetherington, Alistair M. (1999) Dissection of the ozone-induced calcium signature. Plant Journal, 17 (5). pp. 575-579. ISSN 0960-7412
Full text not available from this repository.Abstract
The cellular responses of plants to numerous extracellular stimuli are mediated by transient elevations in the concentration of cytosolic free calcium ([Ca2+]cyt). We have addressed the question of how cells can use this apparently ubiquitous system to initiate so many specific and appropriate end responses. We show that the pollutant gas ozone elicits a biphasic Ca2+ response in intact Arabidopsis plants and a subsequent increase in expression of the gene encoding the antioxidant defence enzyme glutathione-S-transferase (GST). The second of the two [Ca2+]cyt peaks, but not the first, could be eliminated either by pre-treatment of plants with lanthanum chloride, or by reducing the duration of ozone fumigation. Under these conditions, ozone-inducedGSTexpression was abolished. These data provide a functional dissection of the ozone Ca2+ signalling pathway and indicate that the second ozone-induced [Ca2+]cyt peak provides the necessary information to direct expression of GST.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Plant Journal |
| Subjects: | Q Science > QH Natural history > QH301 Biology |
| Departments: | Faculty of Science and Technology > Lancaster Environment Centre Faculty of Science and Technology > Engineering |
| ID Code: | 8980 |
| Deposited By: | Dr Martin R McAinsh |
| Deposited On: | 20 May 2008 11:35 |
| Refereed?: | Yes |
| Published?: | Published |
| Last Modified: | 26 Jul 2012 18:29 |
| Identification Number: | |
| URI: | http://eprints.lancs.ac.uk/id/eprint/8980 |
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