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Phytoalexins and Signalling Metabolites Produced in the Wild Crucifer Neslia Paniculata: Camalexins and Arabidopsides

The metabolites produced in elicited leaves of the
wild crucifer Neslia paniculata (L.)
Desv. were investigated in
abiotically stressed plants. Herein the phytoalexins camalexin,
7-methoxycamalexin and 6,7-dimethoxycamalexin together with the signalling
metabolites arabidopsides A and D are reported. This is the first report of occurrence
of 7-methoxy and 6,7-dimethoxycamalexins in planta and
the third example of
synchronized biosynthesis of phytoalexins and galacto-oxylipins. It is
suggested that arabidopsides and structurally similar metabolites functioning as signalling molecules are likely to occur in a much larger number of plant
species than originally hypothesized. N. paniculata is potentially useful to generate hybrid plants
resistant to blackleg disease caused by Leptosphaeria maculans.