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Induction of phenolic compounds in Hypericum perforatum L. cells by colletotrichum gloeosporioides elicitation

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Resumo:Changes in phenolic metabolism after elicitation with Colletotrichum gloeosporioides (CG) has been studied in Hypericum perforatum L. (HP) cell suspension cultures. Soluble phenolics were analysed by HPLC–DAD and HPLC–DAD–MS/MS. HP cultures elicited with the CG elicitor showed a significant increase in xanthone accumulation. Xanthone accumulation increased twelve fold when the cells were primed with methyl-jasmonate (MeJ) or salicylic acid (SA), before elicitation. HP cultures exposed only to MeJ produced a set of flavonoids, the flavones which represent a substantial part (approx. 40%) of the total flavonoids accumulated in these cells. The possible importance of xanthones as a component of defence mechanism of HP against biotic stress is discussed.
Autores principais:Conceição, Luís F. R.
Outros Autores:Ferreres, Federico; Tavares, R. M.; Dias, Alberto Carlos Pires
Assunto:Hypericum Colletotrichum Phenolics Xanthone Hypericum perforatum salicylic acid Colletotrichium gloeosporioides xanthones biotic stress methyl-jasmonate HPLC-DAD-MS/MS Colletotrichum gloeosporioides
Ano:2006
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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