Differential regulation of Arabidopsis plastid gene expression and RNA editing in non-photosynthetic tissues

摘要: RNA editing is one of the post-transcriptional processes that commonly occur in plant plastids and mitochondria. In Arabidopsis, 34 C-to-U events, affecting transcripts 18 plastid genes, have been identified. Here, we examined expression these different organs, green non-green seedlings (etiolated, cia5-2, ispF ispG albino mutants, lincomycin-, norflurazon-treated). The efficiency Arabidopsis varies from site to site, may be specifically regulated tissues. Steady state levels are low or undetectable etiolated seedlings, but most sites edited with efficiencies similar those observed seedlings. By contrast, some completely lost significantly reduced other tissues; for instance, ndhB-149, ndhB-1255, ndhD-2 roots lincomycin-treated also mutants norflurazon-treated However, matK-640 edited, accD-794, atpF-92, psbE-214, psbF-77, psbZ-50, rps14-50 highly both addition, nucleus-encoded polymerase dependent induced by lincomycin, splicing ndhB inhibitor-treated Our results indicate gene expression, differentially various types