A Large-scale Isolation Procedure for Cereal Mesophyll Protoplasts |
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Authors: | CHIN J C; SCOTT K J |
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Institution: | Department of Biochemistry, University of Queensland St. Lucia, Q4067, Australia |
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Abstract: | A method suitable for the large-scale isolation of cereal protoplastsfrom up to 50 g of leaf material is described. Surface-sterilizedleaves from cultivars of wheat, barley, maize, sorghum, andTriticale were diced and vacuum infiltrated with enzyme mixturecomposed of cellulysin (1 per cent w/v), hemicellulase (1 percent w/v), and macerozyme (0.5 per cent w/v). With this procedure,yields of between 106 to 107 protoplasts per gram of leavescan be reproducibly obtained after only 1.53 h of enzymatictreatment. These protoplasts were almost 100 per cent viable(as determined by fluorescein diacetate staining) and incorporationof 3H-uridine and 14C-leucine into an acid-insoluble fractionwas demonstrated. Almost one-third of the ribosomes of theseisolated protoplasts were present as polysomes. cereals, leaf mesophyll, protoplast isolation |
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