title: Cryopreservation of in vitro grown shoots of ginger (Zingiber officinale Rosc.).
abstract: An efficient cryopreservation technique for in vitro grown shoots of ginger (Zingiber officinale Rosc) was developed based on encapsulation dehydration, encapsulation vitrification and vitrification procedures. Pregrowth and serial preculture were needed to obtain the best regrowth for all techniques. The vitrification procedure resulted in higher regrowth (80%) when compared to encapsulation vitrification (66%) and encapsulation dehydration (41%). In the vitrification procedure shoots were: precultured in liquid Murashige-Skoog medium containing 0.3 M sucrose for 3 days; cryoprotected with a mixture of 5% DMSO and 5% glycerol for 20 min at room temperature; osmoprotected with a mixture of 2 M glycerol and 0.4 m sucrose for 20 min at 25 degrees C; before being dehydrated with a highly concentrated vitrification solution (PVS2) for 40 min at 25 degrees C. The dehydrated shoots were transferred to 2 ml cryotubes, suspended in 1 ml PVS2 and plunged directly into liquid nitrogen. In all the three cryopreservation procedures tested, shoots grew from cryopreserved shoot tips without intermediary callus formation. The genetic stability of cryopreserved ginger shoot buds were confirmed using ISSR and RAPD profiling.
authors.affiliation: Division of Crop Improvement and Biotechnology, Indian Institute of Spices Research, Kerala, India.
authors.forename: G
authors.initials: G
authors.lastname: Yamuna
authors.forename: V
authors.initials: V
authors.lastname: Sumathi
authors.forename: S P
authors.initials: SP
authors.lastname: Geetha
authors.forename: K
authors.initials: K
authors.lastname: Praveen
authors.forename: N
authors.initials: N
authors.lastname: Swapna
authors.forename: K Nirmal
authors.initials: KN
authors.lastname: Babu
mesh_terms: D002869:Chromosome Aberrations; D015925:Cryopreservation / Q000379:methods*; D003451:Cryoprotective Agents / Q000494:pharmacology; D016172:DNA Fingerprinting; D018744:DNA, Plant / Q000235:genetics; D003890:Desiccation; D004121:Dimethyl Sulfoxide / Q000494:pharmacology; D020939:Zingiber officinale / Q000187:drug effects / Q000235:genetics / Q000502:physiology*; D005990:Glycerol / Q000494:pharmacology; D018520:Plant Shoots / Q000187:drug effects / Q000254:growth & development* / Q000502:physiology*; D013395:Sucrose / Q000494:pharmacology
chemical_list: D003451:Cryoprotective Agents; D018744:DNA, Plant; D013395:Sucrose; D005990:Glycerol; D004121:Dimethyl Sulfoxide