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Choc abiotique provoqué par un traitement cryogénique et son impact sur la synthèse secondaire de métabolites dans des plantes médicinales comme par exemple les espèces d'Hypericum .

Abiotic stress evoked by cryogenic treatment and its impact on secondary metabolite synthesis in medicinal plants: Hypericum spp. as an example.

Numéro : pap. ID: 805

Auteurs : CELLAROVA E., SKYBA M., BRUNÁKOVÁ K., et al.

Résumé

Prior to, during and post cryopreservation plant cells undergo a series of abiotic stresess as a consequence of explant isolation, precryogenic, cryogenic and postcryogenic treatments. These stresses comprise a break of integrity of a plant and correlation relationships within a plant, wounding caused by mechanical damage, decreasing of the temperature followed by dehydration and oxidative stress as a consequence of an increased production of reactive oxygen species. All these factors should be taken into account in postcryogenic assessments of plants regenerated from cryopreserved cells. In cryopreservation of medicinal plants abiotic stress may have a beneficial influence as an elicitor of secondary metabolite synthesis. In this study some of these aspects are demonstrated on an example of medicinal plant species, Hypericum perforatum L. (Hypericaceae) as a model for the genus Hypericum which contains some unique secondary metabolites especially hypericins and hyperforins with anticancer and other pharmacodynamic activities.

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Pages : 8 p.

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Détails

  • Titre original : Abiotic stress evoked by cryogenic treatment and its impact on secondary metabolite synthesis in medicinal plants: Hypericum spp. as an example.
  • Identifiant de la fiche : 30001891
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

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