Award details

Regulation and manipulation of gene expression during development and germination of cereal grains

Reference	BBS/E/C/00804154
Principal Investigator / Supervisor	Dr John Lenton
Co-Investigators / Co-Supervisors
Institution	Rothamsted Research
Department	Rothamsted Research Department
Funding type	Research
Value (£)	366,905
Status	Completed
Type	Institute Project
Start date	01/04/1999
End date	31/03/2003
Duration	48 months

Abstract

Disruption of the delicate balance between embryo dormancy and germination has a serious impact on flour quality of wheat and malting quality of barley resulting from premature expression of starch hydrolytic enzymes. Pre-harvest sprouting of wheat and barley in the ear is phenotypically similar to the maize mutation, viviparous 1 (vp1). The wild type maize gene encodes a transcription factor promotes embryo maturation and confers responsiveness of tissues to the plant hormone, abscisic acid (ABA). This project examines the involvement of ABA and gibberellin (GA), two hormones that are known to have antagonistic actions in the production of hydrolytic enzymes in endosperm of mature wheat and barley grains. Although ABA induces the production of several maturation related genes and is associated with the maintenance of embryo dormancy in wheat and barley, little is known of the involvement of GA in reversing these processes during grain development under different environmental conditions. Transgenic plants have been generated as a means of directly testing the involvement of GA in pre-maturity a-amylase production and pre-harvest sprouting in wheat.

Summary

unavailable

Committee	Closed Committee - Agri-food (AF)
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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