Synthesis and Stability of Chloroplast Ribosomal—RNA's | Zendy

John Ingle | Zendy

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Synthesis and Stability of Chloroplast Ribosomal—RNA's

Author(s) -

John Ingle

Publication year - 1968

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.43.9.1448

Subject(s) - rna , ribosomal rna , lability , cytoplasm , chloroplast , 5s ribosomal rna , biology , microbiology and biotechnology , biochemistry , ribosome , gene

The chloroplast ribosomal-RNAs (1.1 x 10(6) and 0.56 x 10(6) mol wt) are synthesized in the normal ratio of 2:1. The non-ribosomal distribution observed after extraction and fractionation results from the lability of the 1.1 x 10(6) component, and a correction for this breakdown can be applied in certain cases. Newly synthesized 1.1 x 10(6) RNA is more stable than the older accumulated 1.1 x 10(6) RNA. Accumulation of the chloroplast RNA during growth of radish cotyledons occurs at a later time than the accumulation of cytoplasmic RNA, and its turnover is much less than that of the cytoplasmic ribosomal-RNA.

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