Effect of feeding precursors on phenylalanine ammonia-lyase activity and coumarin accumulation in leaves of Matricaria chamomilla L.


Four-week-old chamomile (Matricaria chamomilla) plants were exposed for 72 h to 0.01, 0.1 and 1 mM phenylalanine (Phe) or tyrosine (Tyr). Phe at all concentrations significantly increased phenylalanine ammonia-lyase (PAL) activity (by 30, 76 and 90%, respectively) as well as accumulation of coumarin-related compounds (herniarin and its precursors (Z)- and… (More)
DOI: 10.1007/s10725-007-9172-4


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