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

Peter Shewry, Marianna Rakszegi, Alison Lovegrove, Dominic Amos, Delia Irina Corol, Ahmed Tawfike, Péter Mikó, Jane L. Ward

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)5346-5351
Number of pages6
JournalJournal of Agricultural and Food Chemistry
Volume66
Issue number21
DOIs
Publication statusPublished - May 30 2018

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Keywords

  • low-input agriculture
  • metabolomics
  • organic agriculture
  • wheat
  • wholemeal

ASJC Scopus subject areas

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)

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