Quantitative trait loci mapping of polyphenol metabolites from a 'Latham' x 'Glen Moy' red raspberry (Rubus idaeus L) cross

G. J. McDougall (Lead / Corresponding author), J. W. Allwood, G. Dobson, C. Austin, S. Verrall, C. J. Alexander, R. D. Hancock, J. Graham, C. A. Hackett

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Abstract

Objective: The objective of this study was to investigate the genetic control of polyphenol accumulation in red raspberry (Rubus idaeus L).

Methods: The levels of total anthocyanins and 37 individual polyphenol metabolites were measured over three years in a raspberry biparental mapping population. Quantitative trait loci (QTLs) for these traits were mapped onto a high-density SNP linkage map.

Results: At least one QTL was detected for each trait, with good consistency among the years. On four linkage groups (LG), there were major QTLs affecting several metabolites. On LG1, a QTL had large effects on anthocyanins and flavonols containing a rutinoside or rhamnose group. On LG4, a QTL had large effects on several flavonols and on LG5 and LG6 QTLs had large effects on ellagic acid derivatives. Smaller QTLs were found on LG2 and LG3.

Conclusion: The identification of robust QTLs for key polyphenols in raspberry provides great potential for marker-assisted breeding for improved levels of potentially health beneficial components.

Original languageEnglish
Article number71
Number of pages26
JournalMetabolomics : Official journal of the Metabolomic Society
Volume19
Issue number8
DOIs
Publication statusPublished - 8 Aug 2023

Keywords

  • Anthocyanins
  • Ellagitannins
  • Genetic control
  • Heritability
  • Polyphenols
  • QTLs
  • Raspberry

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Clinical Biochemistry

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