Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 496824
Title Modification of Prenylated Stilbenoids in Peanut (Arachis hypogaea) Seedlings by the Same Fungi That Elicited Them : The Fungus Strikes Back
Author(s) Aisyah, Siti; Gruppen, Harry; Slager, Mathijs; Helmink, Bianca; Vincken, Jean Paul
Source Journal of Agricultural and Food Chemistry 63 (2015)42. - ISSN 0021-8561 - p. 9260 - 9268.
Department(s) Food Chemistry Group
Operations Research and Logistics
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) Arachis hypogaea - Aspergillus oryzae - detoxification - fungal metabolism - glycosylation - groundnut - mass spectrometry - oxidative cleavage - peanut - Rhizopus oryzae

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.

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