Summary
A plasmid library of chloroplast (Cp) DNA fromChlamydomonas reinhardtii was used to screen for transcripts which respond to light. A transcript of R03, a 1,300 byEcoRI fragment, was identified as a message which accumulates in darkness. The transcribed region of R03 showed extensive sequence homology with theEscherichia coli elongation factor gene,tufA. A genespecific probe was constructed. Northern blots were used to study the extent and kinetics of accumulation of this transcript in darkness and in the presence of antibiotic inhibitors of Cp ribosomes. For comparison, the effects of darkness and antibiotics on the steady state levels ofpsbA, rbeL, and 16S rRNA were also studied. We conclude that thetuf transcript shows the greatest increase in darkness and in the presence of antibiotics.
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Silk, G.W., Wu, M. Darkness and antibiotics increase the steady-state transcripts of the elongation factor gene (tuf) inChlamydomonas reinhardtii . Curr Genet 14, 119–126 (1988). https://doi.org/10.1007/BF00569335
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DOI: https://doi.org/10.1007/BF00569335