title: Modification of Prenylated Stilbenoids in Peanut (Arachis hypogaea) Seedlings by the Same Fungi That Elicited Them: The Fungus Strikes Back.
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.
authors.affiliation: Laboratory of Food Chemistry, Wageningen University , P.O. Box 17, 6700 AA Wageningen, The Netherlands.|Department of Chemistry Education, Indonesia University of Education , Setiabudi 229, Bandung 40154, Indonesia.
authors.forename: Siti
authors.initials: S
authors.lastname: Aisyah
authors.affiliation: Laboratory of Food Chemistry, Wageningen University , P.O. Box 17, 6700 AA Wageningen, The Netherlands.
authors.forename: Harry
authors.initials: H
authors.lastname: Gruppen
authors.affiliation: Laboratory of Food Chemistry, Wageningen University , P.O. Box 17, 6700 AA Wageningen, The Netherlands.
authors.forename: Mathijs
authors.initials: M
authors.lastname: Slager
authors.affiliation: Laboratory of Food Chemistry, Wageningen University , P.O. Box 17, 6700 AA Wageningen, The Netherlands.
authors.forename: Bianca
authors.initials: B
authors.lastname: Helmink
authors.affiliation: Laboratory of Food Chemistry, Wageningen University , P.O. Box 17, 6700 AA Wageningen, The Netherlands.
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Vincken
mesh_terms: D010367:Arachis / Q000737:chemistry / Q000254:growth & development / Q000382:microbiology* / Q000502:physiology; D001230:Aspergillus / Q000502:physiology; D018525:Germination; D054884:Host-Pathogen Interactions; D015394:Molecular Structure; D010935:Plant Diseases / Q000382:microbiology*; D010936:Plant Extracts / Q000737:chemistry* / Q000378:metabolism; D054876:Prenylation; D012233:Rhizopus / Q000502:physiology; D036226:Seedlings / Q000737:chemistry / Q000254:growth & development / Q000382:microbiology* / Q000502:physiology; D012639:Seeds / Q000737:chemistry / Q000254:growth & development / Q000382:microbiology* / Q000469:parasitology; D013267:Stilbenes / Q000737:chemistry* / Q000378:metabolism
chemical_list: D010936:Plant Extracts; D013267:Stilbenes
keywords: Arachis hypogaea; Aspergillus oryzae; Rhizopus oryzae; detoxification; fungal metabolism; glycosylation; groundnut; mass spectrometry; oxidative cleavage; peanut