High Yield Isolation of Nuclei from Plant Protoplasts

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Abstract
Nuclei were isolated from protoplasts obtained from Parthenocissus tricuspidata Crown Gall callus tissues. The effect of various isolation procedures, detergent or ultrasonication, on yield and quality of nuclei was studied. A standard procedure, based on the use of 5 × 10−3% Triton × 100 — 6% PVP — 20% glycerol, may be carried out in 30 min and gives 80 to 90% yield of nuclei in which RNA polymerase activity is retained.