Summary
Several plastome mutants ofPelargonium zonale hort. are characterized by either plastid ribosome deficiencies of specific defects in their photosystems. Southern analyses of plastid DNA fragments containing both the rDNA region and therbcL gene revealed no differences between wild-type and mutant leaves. Northern analyses of mutants with plastid ribosome deficiencies indicate lower levels of plastid ribosomal RNA and mRNA coding for the large subunit (LS) of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) in mutant leaves relative to green leaves. The data presented in this paper indicate a defect at the transcriptional level in the plastid ribosome deficient plants. We suggest that a RNA polymerase defect affects transcriptional efficiency in these mutants.
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Steiner, K., Baldauf, F., Metzlaff, M. et al. Comparative transcription analysis of higher plant plastome mutants. Curr Genet 14, 171–176 (1988). https://doi.org/10.1007/BF00569341
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DOI: https://doi.org/10.1007/BF00569341