Stable transformation of sugarbeet protoplasts by electroporation |
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Authors: | K. Lindsey M. G. K. Jones |
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Affiliation: | (1) Department of Biochemistry, AFRC Institute of Arable Crops Research, Rothamsted Experimental Station, AL5 2JQ Harpenden, Herts, UK;(2) Present address: Leicester Biocentre, University of Leicester, Le1 7RH Leicester, UK |
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Abstract: | Conditions were optimized for the culture, antibiotic selection and stable transformation by electroporation of suspension culture protoplasts of sugarbeet,Beta vulgaris L.. Highest plating efficiencies (up to 65% at day 21) were obtained if protoplasts were cultured in PGO salts (de Greef and Jacobs, 1979) supplemented with 0.1 mg/1 2,4-D, 0.01 mg/l BAP and 9% mannitol, and in 0.6% agarose rather than in liquid medium. Sensitivity to kanamycin also depended on whether protoplasts were cultured in liquid or agarose medium. Stable transformation of protoplast-derived colonies, as determined by resistance to kanamycin and Southern blot analysis, was achieved by electroporation using both rectangular and exponentially-decaying pulses.Abbreviations 2,4-D 2,4-dichlorophenoxyacetic acid - BAP 6-benzylaminopurine - npt-II neomycin phosphotransferase - EDTA ethylenediaminetetracetic acid - SDS sodium dodecyl sulphate |
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