Examination of the distribution of nicosulfuron in sunflower plants by matrix-assisted laser desorption/ionisation mass spectrometry imaging

ANDERSON, D. M. G., CAROLAN, V. A., CROSLAND, S., SHARPLES, K. R. and CLENCH, M. R. (2009). Examination of the distribution of nicosulfuron in sunflower plants by matrix-assisted laser desorption/ionisation mass spectrometry imaging. Rapid communications in mass spectrometry, 23 (9), 1321-1327.

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Link to published version:: 10.1002/rcm.3973

Abstract

Matrix-assisted laser desorption/ionisation mass spectrometry imaging (MALDI-MSI) has been used to image the distribution of the pesticide nicosulfuron (2-[[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]aminosulfonyl]-N,N-dimethyl-3-pyridinecarboxamide) in plant tissue using direct tissue imaging following root and foliar uptake. Sunflower plants inoculated with nicosulfuron were horizontally sectioned at varying distances along the stem in order to asses the extent of translocation; uptake via the leaves following foliar application to the leaves and uptake via the roots from a hydroponics system were compared. An improved sample preparation methodology, encasing samples in ice, allowed sections from along the whole of the plant stem from the root bundle to the growing tip to be taken. Images of fragment ions and alkali metal adducts have been generated that show the distribution of the parent compound and a phase 1 metabolite in the plant. Positive and negative controls have been included in the images to confirm ion origin and prevent false-positive results which could originate from endogenous compounds present within the plant tissue.

Item Type: Article
Research Institute, Centre or Group: Biomedical Research Centre
Identification Number: 10.1002/rcm.3973
Depositing User: Sarah Ward
Date Deposited: 18 May 2010 15:54
Last Modified: 18 May 2010 15:54
URI: http://shura.shu.ac.uk/id/eprint/2092

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