Cryopreservation of Date Palm Highly Regenerable Tissues Using Vitrification Procedures

Fki, Lotfi; Bouaziz, N.; Bouattour, O; Guarbaya, M; Saidi, Mohammed Najib; Bouzid, Radhia Gargouri; Drira, Noureddine; Panis, Bart

doi:10.17660/actahortic.2011.908.27

Cited by 1 publication

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“…Cryopreservation circumvents problems related to the regular re-initiation of in vitro cultures and to the long-term maintenance of proliferating cultures that include risks of contamination, somaclonal variation, or loss of regeneration competency. Several studies have been published on date palm cryopreservation although research is still needed before routine use [9][10][11]. The successful cryopreservation of proliferating tissue can be of great interest for the development of commercial large-scale micropropagation strategies.…”

Section: Introductionmentioning

confidence: 99%

In Vitro Cryopreservation of Date Palm Caulogenic Meristems

Fki

Chkir

Kriaâ

et al. 2017

Methods in Molecular Biology

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Cryopreservation is the technology of choice not only for plant genetic resource preservation but also for virus eradication and for the efficient management of large-scale micropropagation. In this chapter, we describe three cryopreservation protocols (standard vitrification, droplet vitrification, and encapsulation vitrification) for date palm highly proliferating meristems that are initiated from vitro-cultures using plant growth regulator-free MS medium. The positive impact of sucrose preculture and cold hardening treatments on survival rates is significant. Regeneration rates obtained with standard vitrification, encapsulationvitrification, and droplet-vitrification protocols can reach 30, 40, and 70%, respectively. All regenerated plants from non-cryopreserved or cryopreserved explants don't show morphological variation by maintaining genetic integrity without adverse effect of cryogenic treatment. Cryopreservation of date palm vitro-cultures enables commercial tissue culture laboratories to move to large-scale propagation from cryopreserved cell lines producing true-to-type plants after clonal field-testing trials. When comparing the cost of cryostorage and in-field conservation of date palm cultivars, tissue cryopreservation is the most cost-effective. Moreover, many of the risks linked to field conservation like erosion due to climatic, edaphic, and phytopathologic constraints are circumvented.

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Section: Introductionmentioning

confidence: 99%