Plant Cell, Tissue and Organ Culture (PCTOC)

, Volume 96, Issue 3, pp 289–296

Cryopreservation of hairy root cultures of Maesa lanceolata and Medicago truncatula

Authors

  • E. Lambert
    • Faculty of Bioscience Engineering, Department of Plant ProductionUniversity of Ghent
  • A. Goossens
    • Department of Plant Systems BiologyFlanders Institute for Biotechnology
    • Faculty of Science, Department of Molecular GeneticsUniversity of Ghent
  • B. Panis
    • Faculty of Bioscience Engineering, Department of BiosystemsKU Leuven
  • M. C. Van Labeke
    • Faculty of Bioscience Engineering, Department of Plant ProductionUniversity of Ghent
    • Faculty of Bioscience Engineering, Department of Plant ProductionUniversity of Ghent
Original Paper

DOI: 10.1007/s11240-008-9486-6

Cite this article as:
Lambert, E., Goossens, A., Panis, B. et al. Plant Cell Tiss Organ Cult (2009) 96: 289. doi:10.1007/s11240-008-9486-6
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Abstract

To study the production of secondary metabolites of Maesa lanceolata and Medicago truncatula, hairy root cultures of both plant species were established. Because maintenance of large numbers of cultures is laborious and costly, we developed a cryopreservation protocol and stored different isolated lines over time. Using encapsulation-dehydration, high survival rates were observed for both Maesa and Medicago hairy roots. Root tips were isolated and encapsulated in calcium-alginate beads, containing 0.1 M sucrose. The encapsulated hairy roots were precultured for 3 days using basal medium containing high sucrose concentrations. Medicago root tip growth during the preculturing time lead to unwanted outgrowth which could be tempered by addition of plant growth inhibitors. After preculturing, the beads were dehydrated in the air flow of a laminar flow until 35–40% of the initial bead weight was reached. Dehydrated beads were plunged into liquid nitrogen and after different storage times thawed in a water bath at 40°C. The survival rates were 90% for Maesa and 53% for Medicago, which are sufficient to allow implementation in large storage experimental set-ups.

Keywords

Maesa lanceolataMedicago truncatulaHairy rootsCryopreservationVitrificationEncapsulation-dehydration

Copyright information

© Springer Science+Business Media B.V. 2008