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Production of trichothecenes and other secondary metabolites by Fusarium culmorum and F. equiseti on common laboratory media and a soil organic matter agar: An ecological interpretation

Hestbjerg, Helle; Nielsen, Kristian F.; Thrane, Ulf and Elmholt, Susanne (2002) Production of trichothecenes and other secondary metabolites by Fusarium culmorum and F. equiseti on common laboratory media and a soil organic matter agar: An ecological interpretation. Journal of Agricultural and Food Chemistry, 50 (26), pp. 7593-7599.

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Summary

Fusarium culmorum and F. equiseti were characterized with regard to production of trichothecenes and other secondary metabolites. Results following growth on laboratory media are interpreted with the aim of increasing the understanding of fungal metabolism in the field environment. While trichothecene production was detected for 94 of 102 F. culmorum isolates, only eight of 57 F. equiseti isolates were positive. Profiles of secondary metabolites were compared following growth on Yeast Extract Sucrose agar (YES), Potato Sucrose Agar (PSA) and an agar medium, prepared from Soil Organic Matter (SOM), which was included to simulate growth conditions in soil. SOM supported the production of chrysogine by F. culmorum. The two species utilized the media differently. F. culmorum produced zearalenone (ZEA) on YES, whereas some F. equiseti isolates produced ZEA on PSA. Other F. equiseti isolates produced equisetin. These differences may reflect that F. culmorum depends on a pathogenic life style while F. equiseti has a more saprotrophic mode of existence.


EPrint Type:Journal paper
Keywords:mycotoxins, ecology
Subjects: Crop husbandry > Post harvest management and techniques
Food systems > Food security, food quality and human health
Environmental aspects > Biodiversity and ecosystem services
Soil > Soil quality > Soil biology
Research affiliation: Denmark > DARCOF II (2000-2005) > I.12 (PREMYTOX) Preventing mycotoxin problems
Deposited By: Elmholt, Susanne
ID Code:29
Deposited On:02 Oct 2002
Last Modified:12 Apr 2010 07:27
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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