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Key roles of ABA and hydrogen peroxide in photo-oxidative stress-induced siganlling for APX2 gene expression
Reference
P19758
Principal Investigator / Supervisor
Professor Neil R Baker
Co-Investigators /
Co-Supervisors
Professor William Davies
,
Mr Mike Fryer
,
Dr James Morison
Institution
University of Essex
Department
Biological Sciences
Funding type
Research
Value (£)
263,320
Status
Completed
Type
Research Grant
Start date
01/01/2004
End date
30/04/2007
Duration
40 months
Abstract
Expression of the cytosolic ascorbate peroxidase gene, APX2, when Arabidopsis leaves are exposed to high light stress is restricted to bundle sheath cells and follows an increase in hydrogen peroxde production in these cells. Changes in leaf water status and abscisic acid also play major roles in regulating the activity of this environmentally-responsive signalling pathway for APX2 expression. We will elucidate the relationship between leaf water status, abscisic acid, hydrogen peroxide and light-induced APX2 expression from analyses of a range of Arabidopsis mutants containing luciferase reporter genes. The key roles of abscisic acid and hydrogen peroxide in the signalling pathway for light-induced APX2 expression will be resolved.
Summary
unavailable
Committee
Closed Committee - Plant & Microbial Sciences (PMS)
Research Topics
X – not assigned to a current Research Topic
Research Priority
X – Research Priority information not available
Research Initiative
X - not in an Initiative
Funding Scheme
X – not Funded via a specific Funding Scheme
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