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Free Content Morpho-Histological Study of Banana (Musa spp. cv. Grande Naine [AAA]) Cell Suspensions during Cryopreservation and Regeneration

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In this work, a morpho-histological study of banana (Musa spp. cv. Grande Naine [AAA]) embryogenic cell suspensions during cryopreservation and regeneration was performed. It was demonstrated that the regeneration process of somatic embryos originating from cryopreserved cell suspensions was different from that of control cell suspensions. Somatic embryos originating from cryopreserved cell suspensions had a unicellular origin. The regeneration process was modified not only by freezing in liquid nitrogen but also by the plasmolyzing effect of the 0.5 M sucrose solution employed during pretreatment. This result explained the high number of embryonic structures formed on M3 medium, compared with the control. Proembryos blocked at the globular stage could pursue their development when they were plated on new culture medium at a lower density after 30 days of culture on M3 medium. The unicellular origin of somatic embryos produced from cryopreserved cell suspensions offers the prospect of using cryopreservation to select non-chimeral transformed plants.

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Keywords: BANANA; CELLULAR SELECTION; CRYOPRESERVATION; EMBRYOGENIC CELL SUSPENSION; HISTOLOGY

Document Type: Research Article

Publication date: 01 November 2009

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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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