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Phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) is involved in the lignification of pine suspension cultures in response to an elicitor prepared from an ectomycorrhizal fungus. To elucidate the molecular basis of this response, PAL was purified to homogeneity from jack pine (Pinus banksiana)
Using degenerate PCR primers that target evolutionarily conserved sequences in pal genes, we show that in the gymnosperm, Pinus banksiana, phenylalanine ammonia-lyase (PAL) is encoded by a multigene family of at least eight to ten loci. Five classes of pal sequence were easily distinguished among 28
A tissue culture system has been developed to examine phenylpropanoid metabolism induced in pine tissues by an ectomycorrhizal symbiont. An elicitor preparation from the ectomycorrhizal fungus Thelephora terrestris Fr. induced enhanced phenolic metabolism in suspension cultured cells of Pinus