Plant Physiology 87:671-674 (1988)
© 1988 American Society of Plant Biologists
Molecular Biology and Gene Regulation
Stable Transformation of Soybean Callus by DNA-Coated Gold Particles
Paul Christou,
Dennis E. McCabe and
William F. Swain
Agracetus, Middleton, Wisconsin 53562
Immature soybean (Glycine max L.) embryos from commercially important cultivars were the targets of rapidly accelerated, DNA-coated, gold particles. Protoplasts were prepared from these tissues and propagated in culture under selection conditions for the introduced neomycin phosphotransferase II gene. Kanamycin-resistant calli were obtained at a rate of approximately 105. Enzyme assays and Southern blot hybridization confirmed the expression of the foreign gene and its stable integration into the soybean genome. Our results show that particle acceleration can be used for the introduction of foreign DNA into the soybean genome and indicate the technique may be useful in the recovery of engineered plants by transformation of regenerable tissues.
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