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Cryopreservation des pousses de Picrorhiza kurroa Royle ex Benth., une plante médicinale indienne menacée de disparition, à l'aide de vitrification.

Cryopreservation of shoot tips of Picrorhiza kurroa Royle ex Benth., an indigenous endangered medicinal plant, through vitrification.

Auteurs : SHARMA N., SHARMA B.

Type d'article : Article

Résumé

The cryopreservation of shoot tips of Picrorhiza kurroa Royle ex Benth (IC 266698), an endangered medicinal plant of India, was investigated. Shoot tips were precultured on MS medium supplemented with various osmotica before dehydrating with PVS2 solution at 0 °C. The dehydrated shoot tips were directly immersed in LN2. Following cryopreservation, and after rapid rewarming at 45ºC, shoot tips were quickly washed with 1.2 M sucrose solution and then plated on solidified shoot culture medium. Shoot tips were successfully cryopreserved by vitrification, when they were precultured on medium supplemented with 5% DMSO at 4 °C for two days before dehydrating in PVS2 for 10-20 minutes at 0 °C. Average survival in terms of normal shoot formation after 4 wks of plating was about 20% without callus formation. Cold hardening of shoot cultures for 4 at 4 °C significantly improved the survival and shoot regeneration of cryopreserved shoot tips to 70% and 35%, respectively.

Détails

  • Titre original : Cryopreservation of shoot tips of Picrorhiza kurroa Royle ex Benth., an indigenous endangered medicinal plant, through vitrification.
  • Identifiant de la fiche : 2004-0409
  • Langues : Anglais
  • Source : CryoLetters - vol. 24 - n. 3
  • Date d'édition : 05/2003
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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