Assertion: l phenylalanine | /r/CapableOf | play a role of specific substrates
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text: Consequently, it is safe to assume that both L-phenylalanine and L-tyrosine can play a role of specific substrates in PAL/PTAL-catalyzed reactions in wheat plants and intensify the formation of secondary metabolites, such as phenols and lignin, which can be used as a tool to increase the production of natural plant products.