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Free Content Cryopreservation of shoot-tips of citrus using vitrification: effect of reduced form of glutathione

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A commercial citrus scion cultivar, '439' tangor [C. suavissima Hort. et Tanaka × C. sinensis (L.) Osbesk cv.Gailiangcheng] was used to investigate whether GSH (reduced form of glutathione) could improve survival of a vitrification procedure. The optimal pre-growth treatment was a 3-day pre-culture on basal pre-culture medium (BPM: MT basal medium containing 0.5 mol/L glycerol and 5% sucrose at pH 5.8). GSH of 40 mg/L in the pre-culture medium improved shoot tip survival after cryopreservation. GSH in the recovery medium also improved survival, with 10 mg/L giving the best result. GSH of 40 mg/L in the loading and vitrification solutions also improved survival. The optimal cryopreservation protocol was successfully applied to 12 other citrus cultivars. This is the first report on the successful cryopreservation of shoot-tips from commercial citrus scion cultivars.

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Keywords: CITRUS; CRYOPRESERVATION; GSH; VITRIFICATION

Document Type: Regular Paper

Publication date: January 1, 2004

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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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