Award details

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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