Chloroplast Ribosome Biogenesis Factors

Abstract

The formation of chloroplasts can be traced back to an ancient event in which a eukaryotic host cell containing mitochondria ingested a cyanobacterium. Since then, chloroplasts have retained many characteristics of their bacterial ancestor, including their transcription and translation machinery. In this review, recent research on the maturation of rRNA and ribosome assembly in chloroplasts is explored, along with their crucial role in plant survival and their implications for plant acclimation to changing environments. A comparison is made between the ribosome composition and auxiliary factors of ancient and modern chloroplasts, providing insights into the evolution of ribosome assembly factors. Although the chloroplast contains ancient proteins with conserved functions in ribosome assembly, newly evolved factors have also emerged to help plants acclimate to changes in their environment and internal signals. Overall, this review offers a comprehensive analysis of the molecular mechanisms underlying chloroplast ribosome assembly and highlights the importance of this process in plant survival, acclimation, and adaptation.

Unveiling the Role of SlRNC1 in Chloroplast Development and Global Gene Regulation in Tomato Plants

“…Transcriptomic analysis using RNA-seq identified a set of DEGs in SlRNC1-silenced plants compared to control plants. GO and KEGG analyses revealed enrichment of pathways associated with ribosome biogenesis [28], carbon fixation [29], and plant hormone signaling in response to SlRNC1 silencing. Combining the results of subcellular localization analysis with RNA-seq data, our findings suggest that the SlRNC1 protein may directly interact with other cellular factors in the cytoplasm and nucleus to regulate the expression of other genes.…”