A comparative evaluation of the synthesis of DNA-like RNA in excised and intact plant tissues.

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Abstract
The synthesis of DNA-like RNA (D-RNA), a fraction of RNA having some properties in common wivh bacterial messenger RNA and the synthesis of which is required growth of excised plant tissues, was compared in intact and excised soybean tissues possessing different growth potentials. Relative to the synthesis of ribosomal RNA, excised tissues synthesized more D-RNA than intact tissues, and the relative synthesis of D-RNA was greater in the tissues having the highest growth potential. The accumulation of radioactivity with time into nucleic-acid fractions suggested that the D-RNA and the G-C type DNA were unstable relative to the soluble RNA, ribosomal RNA, and the normal A-T type DNA.

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