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Suspension-cultured barley cells responded to treatments with crude yeast extract and purified glucan preparation by rapidly and transiently (4 h postelicitation) inducing L-phenylalanine ammonia-lyase activity. Similarly, treatment of cell cultures with chitosan resulted in increased phenylalanine ammonia-lyase activity 2–4 h after elicitation, whereas a mycelium preparation of a fungal pathogen,...
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