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Effects of leaf-(NO3) on mineralisation and uptake of N from organic patches
Reference
P10153
Principal Investigator / Supervisor
Dr A Macdonald
Co-Investigators /
Co-Supervisors
Professor Deri Tomos
Institution
University of Aberdeen
Department
Plant and Soil Science
Funding type
Research
Value (£)
150,268
Status
Completed
Type
Research Grant
Start date
01/12/1998
End date
01/12/2001
Duration
36 months
Abstract
Transgenic plants, mutant plants and environmental variables, will be used to generate a range of leaf-[NO3], leaf C and N pools and root-growth responses. It is hypothesised that high leaf-[NO3] will be associated with low rhizodeposition and that this will result in low mineralisation and release of 15N from organic patches. This will be tested by growing plants in a novel system combining: 1) measurement of metabolic activity using lux-marked Pseudomonas fluorescens, 2) pL-sampling of rhizosphere, leaf cells and root cells for solute analysis by capillary electrophoresis and 3) controlled exposure (with respect to root development) of organic patches and release of bacterial inocula through selective degradation of thermo-labile coatings. Roots uptake of 15N from organic patches will be assessed.
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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