RESUMOPolygala paniculata: um recurso de salicilato de metila produzido por cultura de tecidos vegetais O estabelecimento de cultura in vitro de Polygala paniculata L. permitiu a propagação rápida de matéria-prima vegetal sob condições assépticas e padronizadas. As plantas in vitro foram submetidas à extração e destilação simultâneas (EDS) e a composição química do óleo essencial foi analisada por CG/DIC e CG/EM. Foram avaliados os efeitos de BAP (6-benzilaminopurina) sobre o desenvolvimento in vitro e produção de voláteis em P. paniculata. A principal característica do óleo essencial consistiu na presença marcante de salicilato de metila. Plantas cultivadas em meio controle MS (Murashige & Skoog) produziram mais do que 80% de salicilato, enquanto o uso de BAP, reduziu a produção de salicilato de metila a 71% e 21% para as concentrações de 2 e 4 mg L -1 , respectivamente. A cultura de tecidos de P. paniculata pode ser indicada como fonte de salicilato de metila. The establishment of Polygala paniculata L. tissue culture allowed a rapid propagation of raw plant material under aseptic and standardized conditions. Plantlets were subjected to simultaneous distillation-extraction (SDE) and volatiles composition analyzed by GC/FID and GC/MS. The effect of BAP (6-benzylaminopurine) on in vitro development and volatiles production was evaluated. The main feature of volatile compounds was the significant amount of methyl salicylate. Plantlets cultured on control MS (Murashige & Skoog) medium showed more than 80% of salicylate, while the addition of BAP at 2 and 4 mg L -1 concentrations reduced methyl salicylate production to 71% and 21%, respectively. Tissue culture of P. paniculata proved to be a potential source of methyl salicylate. Palavras
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