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Free Content Effects of cryopreservation on developmental competency, cytological and molecular stability of citrus callus

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Cell suspensions of twelve citrus genotypes were successfully cryopreserved by vitrification. All ge notypes survived cryopreservation with >90% viability and the surviving cells of some genotypes regenerated somatic embryos better than the controls. Single-cell sibling lines of cultivar Newhall were used for cytological and molecular examination. It was found that the ploidy constitution remained genetically stable and that no DNA sequence variation was detected by randomly amplified polymorphic DNA (RAPD) assay after cryopreservation. In addition, the methylation sensitive amplified polymorphism (MSAP) assay indicated that cryopreservation caused a significant change in DNA methylation status.

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Keywords: CRYOPRESERVATION; DNA METHYLATION; PLOIDY; RAPD; SOMATIC EMBRYOGENESIS; VITRIFICATION

Document Type: Research Article

Publication date: 01 January 2002

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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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