Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Dissection of the ozone‐induced calcium signature

Dissection of the ozone‐induced calcium signature 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‐induced GST expression 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 . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Plant Journal Wiley

Dissection of the ozone‐induced calcium signature

Download PDF
5 pages

Loading next page...
 
/lp/wiley/dissection-of-the-ozone-induced-calcium-signature-1VtFnG0F3S

References (28)

Publisher
Wiley
Copyright
Copyright © 1999 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0960-7412
eISSN
1365-313X
DOI
10.1046/j.1365-313X.1999.00411.x
Publisher site
See Article on Publisher Site

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‐induced GST expression 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 .

Journal

The Plant Journal – Wiley

Published: Mar 1, 1999

There are no references for this article.