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  • Title: Plantlet regeneration from callus cultures of selected genotype of Aloe vera L.--an ancient plant for modern herbal industries.
    Author: Rathore MS, Chikara J, Shekhawat NS.
    Journal: Appl Biochem Biotechnol; 2011 Apr; 163(7):860-8. PubMed ID: 20857229.
    Abstract:
    Aloe vera L., a member of Liliaceae, is a medicinal plant and has a number of curative properties. We describe here the development of tissue culture method for high-frequency plantlet regeneration from inflorescence axis-derived callus cultures of sweet aloe genotype. Competent callus cultures were established on 0.8% agar-gelled Murashige and Skoog's (MS) basal medium supplemented with 6.0 mg l⁻¹ of 2,4-dichlorophenoxyacetic acid (2,4-D) and 100.0 mg l⁻¹ of activated charcoal and additives (100 mg l⁻¹ of ascorbic acid, 50.0 mg l⁻¹ each of citric acid and polyvinylpyrrolidone, and 25.0 mg l⁻¹ each of L-arginine and adenine sulfate). The callus cultures were cultured on MS medium containing 1.5 mg l⁻¹ of 2,4-D, 0.25 mg l⁻¹ of Kinetin (Kin), and additives with 4% carbohydrate source for multiplication and long-term maintenance of regenerative callus cultures. Callus cultures organized, differentiated, and produced globular embryogenic structures on MS medium with 1.0 mg l⁻¹ of 2,4-D, 0.25 mg l⁻¹ of Kin, and additives (50.0 mg l⁻¹ of ascorbic acid and 25.0 mg l⁻¹ each of citric acid, L-arginine, and adenine sulfate). These globular structures subsequently produced shoot buds and then complete plantlets on MS medium containing 1.0 mg l⁻¹ of 6-benzylaminopurine and additives. A hundred percent regenerated plantlets were hardened in the greenhouse and stored under an agro-net house/nursery. The regeneration system defined could be a useful tool not only for mass-scale propagation of selected genotype of A. vera, but also for genetic improvement of plant species through genetic transformation.
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