Modification of Prenylated Stilbenoids in Peanut (Arachis hypogaea) Seedlings by the Same Fungi That Elicited Them: The Fungus Strikes Back

Siti Aisyah, Harry Gruppen, Mathijs Slager, Bianca Helmink, Jean Paul Vincken*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)

Abstract

Aspergillus oryzae and Rhizopus oryzae were compared for inducing the production of prenylated stilbenoids in peanut seedlings. The fungus was applied at two different time points: directly after soaking (day 1) or after 2 days of germination (day 3). Aspergillus- and Rhizopus-elicited peanut seedlings accumulated an array of prenylated stilbenoids, with overlap in compounds induced, but also with compounds specific to the fungal treatment. The differences were confirmed to be due to modification of prenylated stilbenoids by the fungus itself. Each fungus appeared to deploy different strategies for modification. The content of prenylated stilbenoids modified by fungi accounted for around 8% to 49% (w/w) of total stilbenoids. The contents of modified prenylated stilbenoids were higher when the fungus was applied on day 1 instead of day 3. Altogether, type of fungus and time point of inoculation appeared to be crucial parameters for optimizing accumulation of prenylated stilbenoids in peanut seedlings.

Original languageEnglish
Pages (from-to)9260-9268
JournalJournal of Agricultural and Food Chemistry
Volume63
Issue number42
DOIs
Publication statusPublished - 2015

    Fingerprint

Keywords

  • Arachis hypogaea
  • Aspergillus oryzae
  • detoxification
  • fungal metabolism
  • glycosylation
  • groundnut
  • mass spectrometry
  • oxidative cleavage
  • peanut
  • Rhizopus oryzae

Cite this