Inducible Change of Ribosomal RNA by 2, 4-D in Barley Seed Embryo in vitro

When the embryos were excised from barley seeds and incubated in nutrient medium containing 2, 4-D, radioactive phosphate was incorporated into DNA, soluble and ribosomal RNAs, as well as into other heterogeneous RNAs. The kinetics of nucleic acid synthesis revealed that in the presence of 2, 4-D the synthesis of RNAs were induced in the regions corresponding to ribosomal RNA.