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.
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► Interaction between fungus and
Brassica rapa is cultivar and fungal species specific. ► Fungal infection increased total and aliphatic glucosinolates in Herfstraap. ► Fungal infection decreased total and aliphatic glucosinolates in Oleifera. ► Fungal infection increased indole glucosinolates in Oleifera. ► Glucobrassicin highly accumulated in Oleifera than Herfstraap by
Fusarium oxysporum