Regrowth of embryogenic tissues of <Emphasis Type="Italic">Pinus nigra</Emphasis> following cryopreservation |
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Authors: | T Salaj I Matušíková L Fráterová B Piršelová J Salaj |
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Institution: | 1.Institute of Plant Genetics and Biotechnology,Slovak Academy of Sciences,Nitra 1,Slovak Republic;2.Department of Botanics and Genetics, Faculty of Natural Sciences,Constantine the Philosopher University,Nitra,Slovak Republic;3.Austrian Institute of Technology GmbH, PICME,Department of Health and Environment, Bioresources,Seibersdorf,Austria |
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Abstract: | Embryogenic tissues of a conifer species Pinus nigra Arn. have been cryopreserved by a slow-freezing method. The effect of cryoprotective compounds such as maltose, sucrose or
sorbitol (each 0.5 M) combined with 7.5% (v/v) DMSO has been tested. After thawing, the following parameters have been investigated:
tissue regrowth 6 weeks after thawing, and post-thaw growth evaluated as fresh mass accumulation as well as genetic stability
in post-thaw period. The parameters mentioned have been compared in both cryopreserved and non-cryopreserved tissues. Out
of eight cell lines used in experiments, seven survived cryopreservation (87.5% regrowth), although cell line and treatment
effects were observed. In most cell lines, sucrose or maltose pretreatments were superior over sorbitol. In the regrown cell
lines, the post-thaw growth as fresh mass accumulation was not negatively influenced by cryopreservation. No genetic variation
was observed in cryopreserved tissues using a RAPD approach. |
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