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Genetic manipulation of xanthophyll synthesis to sustain ABA accumulation
Reference
P15875
Principal Investigator / Supervisor
Professor Andrew Thompson
Co-Investigators /
Co-Supervisors
Institution
University of Warwick
Department
Warwick HRI
Funding type
Research
Value (£)
29,632
Status
Completed
Type
Research Grant
Start date
01/10/2001
End date
01/10/2004
Duration
36 months
Abstract
Zeaxanthin is the first compound formed in the branch of the xanthophyll pathway which provides the C40 precursors needed to sustain ABA biosynthesis. Formation of zeaxanthin is catalysed by beta-carotene hydroxylase. Constructs will be designed to overexpress beta-carotene hydroxylase in transgenic tomato plants, in order to prevent excessive depletion of zeaxanthin. Unstressed plants over-producing ABA, due to ectopic expression of 9-cis-epoxycarotenoid dioxygenase (LeNCED1) gene, can undergo photobleaching. Detailed analysis and manipulation of the rates of input (via the hydroxylase), output (via NCED) and the interconversion of intermediates (via neoxanthin synthase) in this vital branch of xanthophyll synthesis, will be undertaken. (Joint with grant 42/P15873).
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
Associated awards:
P15873 Genetic manipulation of xanthophyll synthesis to sustain ABA accumulation
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