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Free Content Physiological, Biochemical and Molecular Characteristics of Cryopreserved Hypericum Perforatum L. Shoot Tips

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Hypericum perforatum L. in vitro cultured shoot tips were characterised at the physiological, biochemical and molecular levels following recovery from cryogenic treatment using the plant vitrification solutions PVS2 and PVS3. This comparative study revealed an increase in recovery and regrowth of explants cryoprotected with PVS3. Among the physiological markers only lipid peroxidation in the regenerants treated with PVS2 significantly increased indicating membrane damage. Genotype-specific interactions were found in most characteristics studied, with some variation detected within control and cryopreserved samples. Analyses of metabolite biosynthesis and genetic stability showed no significant differences in hypericin content, RAPD and minisatellite amplification profiles between PVS2- and PVS3-treated explants. This study demonstrates and discusses the criteria selective for PVS3 to improve the cryopreservation of H. perforatum L.

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Keywords: CRYOPROTECTION; HYPERICIN; PVS2; PVS3; RAPD; VITRIFICATION; VNTR

Document Type: Research Article

Publication date: May 1, 2010

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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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