Effects of Organic and Conventional Crop Nutrition on Profiles of Polar Metabolites in Grain of Wheat

A - Papers appearing in refereed journals

Shewry, P. R., Rakszegi, M., Lovegrove, A., Amos, D., Corol, D. I., Tawfike, A., Miko, P. and Ward, J. L. 2018. Effects of Organic and Conventional Crop Nutrition on Profiles of Polar Metabolites in Grain of Wheat. Journal of Agricultural and Food Chemistry.

AuthorsShewry, P. R., Rakszegi, M., Lovegrove, A., Amos, D., Corol, D. I., Tawfike, A., Miko, P. and Ward, J. L.
Abstract

The profiles of polar metabolites were determined in wholemeal flours of grain from the Broadbalk wheat experiment and from plants grown under organic and low-input systems to study the effects of nutrition on composition. The Broadbalk samples showed increased amino acids, acetate, and choline and decreased fructose and succinate with increasing nitrogen fertilization. Samples receiving farm yard manure had similar grain nitrogen to those receiving 96 kg of N/ha but had higher contents of amino acids, sugars, and organic acids. A comparison of the profiles of grain from organic and low-input systems showed only partial separation, with clear effects of climate and agronomy. However, supervised multivariate analysis showed that the low-input samples had higher contents of many amino acids, raffinose, glucose, organic acids, and choline and lower sucrose, fructose, and glycine. Consequently, although differences between organic and conventional grain occur, these cannot be used to confirm sample identity.

KeywordsWheat; Wholemeal; Metabolomics; Organic agriculture; Low-input agriculture
Year of Publication2018
JournalJournal of Agricultural and Food Chemistry
Digital Object Identifier (DOI)doi:10.1021/acs.jafc.8b01593
Open accessPublished as ‘gold’ (paid) open access
Funder project or codeDesigning Future Wheat (DFW) [ISPG]
The Rothamsted Long Term Experiments [2017-2022]
DFW - Designing Future Wheat - Work package 2 (WP2) - Added value and resilience
FunderBiotechnology and Biological Sciences Research Council
Publisher's version
Accepted author manuscript
Output statusPublished
Publication dates
Online10 May 2018
Publication process dates
Accepted10 May 2018
PublisherAmerican Chemical Society (ACS)
Copyright licenseCC BY
ISSN0021-8561

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