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Glucosinolate profiling of Brassica rapa cultivars after infection by Leptosphaeria maculans and Fusarium oxysporum |
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| Authors: | Ibrahim B. Abdel-Farid Muhammad Jahangir Natali R. Mustafa Nicole M. van Dam Cees A.M.J.J. van den Hondel Hye Kyong Kim Young Hae Choi Robert Verpoorte |
| Affiliation: | 1. Division of Pharmacognosy, Section Metabolomics, Institute of Biology, Leiden University, Einsteinweg 55, P.O. Box 9502, 2300RA Leiden, The Netherlands;2. Department of Botany, Aswan Faculty of Science, South Valley University, Aswan, Egypt;3. Centre for Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Heteren, The Netherlands;4. Division of Molecular Microbiology, Institute of Biology Leiden, Leiden University, Leiden, The Netherlands |
| Abstract: | The glucosinolate contents of two different cultivars of Brassica rapa (Herfstraap and Oleifera) infected with Leptosphaeria maculans and Fusarium oxysporum were determined. Infection triggered the accumulation of aliphatic glucosinolates (gluconapin, progoitrin, glucobrassicanapin and gluconapoleiferin) and indole glucosinolate (4-hydroxy-glucobrassicin) in Herfstraap and of two indole glucosinolates (glucobrassicin and 4-hydroxy-glucobrassicin) in Oleifera. While total and aliphatic glucosinolates decreased significantly in Oleifera, a large increase was observed in Herfstraap after fungal infection. The indole glucosinolate glucobrassicin accumulated in Oleifera at a higher rate than Herfstraap especially after infection with F. oxysporum. Apparently the interaction between fungus and B. rapa is cultivar and fungal species specific. |
| Keywords: | Glucosinolate profiling Brassica rapa Fusarium oxysporum Leptosphaeria maculans Herfstraap Oleifera |
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