The metabolism of the cruciferous phytoalexins brassinin and cyclobrassinin, and the related compounds indole-3-carboxaldehyde, glucobrassicin, and indole-3-acetaldoxime was investigated in various plant tissues of Brassica juncea and B. rapa. Metabolic studies with brassinin showed that stems of B.
The metabolites produced in leaves of the oilseeds canola and rapeseed (Brassica rapa L.) inoculated with either different races of the biotroph Albugo candida or sprayed with CuCl(2) were determined. This investigation established consistent phytoalexin (spirobrassinin, cyclobrassinin, and
Phytoalexins are abundant in edible crucifers and have important biological activities, yet no dedicated gene for their biosynthesis is known. Here, we report two new cytochromes P450 from Brassica rapa (Chinese cabbage) that catalyze unprecedented S-heterocyclizations in cyclobrassinin and
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