Purified Bacillus subtilis DNA taken up by one-day-old barley embryos and permanently fixed within the barley cell is shown to have maintained its biological activity in B. subtilis transformation. Cesuim chloride density gradient centrifugation of DNA isolated from the roots of barley embryos after the uptake and incorporation of radioactive, bromouracil-labelled B. subtilis DNA indicates the presence of the bacterial DNA in several discreet bands of well-defined density, whose density is changed by sonication. These preliminary findings concerning the fate of bacterial DNA taken up by barley roots are discussed in terms of the recombination model of Ledoux and Huart and further experiments are suggested.
College and Department
Chemistry and Biochemistry
BYU ScholarsArchive Citation
Ence, Christine Tolman, "Transforming ability of bacillus subtilis DNA taken up by barley embryos" (1973). Theses and Dissertations. 8207.
DNA, Bacillus subtilis, Barley