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Free Content Cryopreservation of Arabidopsis thaliana shoot tips

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Development of a successful shoot tip cryopreservation method for Arabidopsis thaliana L. will enable researchers to use molecular tools to study processes important for successful cryopreservation in this model organism. We demonstrate that Arabidopsis can be successfully cryopreserved using either plant vitrification solution 2 (PVS2) or plant vitrification solution 3 (PVS3) as cryoprotectants prior to rapidly cooling shoot tips in liquid nitrogen (LN). Shoot tip regrowth after PVS2 cryoprotectant treatment was improved after cold acclimation treatments of 8 or 18 days. All of the shoots tips regrew after LN exposure when cryoprotected with PVS3 for 60 min at 22°C. In addition, shoot tips could be cryopreserved using a two-step cooling procedure with PGD (polyethylene glycol-glucose-dimethyl sulfoxide) as a cryoprotectant. The high levels of shoot formation after LN exposure of Arabidopsis shoot tips makes this a desirable system in which molecular tools can be used to examine how alterations in biochemical, metabolic and developmental processes affect regrowth after cryoprotective treatments.

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Keywords: COLD ACCLIMATION; CRYOPROTECTANT; LIQUID NITROGEN; TWO-STEP COOLING; VITRIFICATION

Document Type: Research Article

Publication date: November 1, 2006

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  • CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

    The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

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