Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1993 Aug;240(2):238-44.
doi: 10.1007/BF00277062.

Tissue- And Stage-Specific Modulation of RNA Editing of the psbF and psbL Transcript From Spinach Plastids--A New Regulatory Mechanism?

Affiliations

Tissue- And Stage-Specific Modulation of RNA Editing of the psbF and psbL Transcript From Spinach Plastids--A New Regulatory Mechanism?

R Bock et al. Mol Gen Genet. .

Abstract

The psbE operon of spinach chloroplasts, which includes the genes psbE, psbF, psbL and psbJ, encodes two RNA editing sites. One site corresponds to the initiation codon of the psbL transcript, as has been described earlier for the homologous transcript from tobacco, while at a second editing site, newly reported here, an internal phenylalanine codon of the psbF transcript is restored. Both these sites were investigated with respect to the extent of editing in spinach plastids at various developmental stages. The apparent existence of only completely edited transcripts in etioplasts and chloroplasts, indicates that light-induced processes are not acting as determinants in eliciting the editing process. Reduced editing is, however, observed in the psbF and psbL transcript from seeds and roots. This finding suggests that the RNA editing process is differentially down-regulated in leucoplasts and proplastids and that editing may, therefore, function as a regulatory device in plastid gene expression.

Similar articles

See all similar articles

Cited by 31 articles

See all "Cited by" articles

References

    1. Nature. 1989 Oct 19;341(6243):662-6 - PubMed
    1. EMBO J. 1991 Dec;10(13):3993-4001 - PubMed
    1. Nucleic Acids Res. 1989 Feb 25;17(4):1760 - PubMed
    1. Science. 1989 Dec 22;246(4937):1632-4 - PubMed
    1. Proc Natl Acad Sci U S A. 1988 Jul;85(13):4750-4 - PubMed

Publication types

LinkOut - more resources

Feedback