Journal
PHYTOCHEMISTRY
Volume 118, Issue -, Pages 131-138Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2015.08.009
Keywords
Alternaria brassicicola; Antifungal; Barbarea vulgaris; B. verna; Brassicaceae; Gluconasturtiin; Leptosphaeria maculans; Nasturlexin; Phytoalexin; Sclerotinia sclerotiorum
Categories
Funding
- Natural Sciences and Engineering Research Council of Canada
- Canada Research Chairs program
- Canada Foundation for Innovation
- Saskatchewan Government
- University of Saskatchewan
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The metabolites produced in leaves of the crucifers winter cress (Barbarea vulgaris) and upland cress (Barbarea verna) abiotically elicited were investigated and their chemical structures were elucidated by analyses of spectroscopic data and confirmed by syntheses. Nasturlexins C and D and their sulfoxides are cruciferous phytoalexins displaying antifungal activity against the crucifer pathogens Altemaria brassicicola, Leptosphaeria maculans and Sclerotinia sclerotiorum. The biosynthesis of these metabolites is proposed based on pathways of cruciferous indolyl phytoalexins. This work indicates that B. vulgaris and B. verna have great potential as sources of defense pathways transferable to agriculturally important crops within the Brassica species. (C) 2015 Elsevier Ltd. All rights reserved.
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