期刊
PLANT AND CELL PHYSIOLOGY
卷 -, 期 -, 页码 -出版社
OXFORD UNIV PRESS
DOI: 10.1093/pcp/pcad082
关键词
Chloroplast ribosome assembly; GTPase; Ribogenesis; RNA chaperone; RNA helicase; rRNA
The formation of chloroplasts can be traced back to the ingestion of a cyanobacterium by a eukaryotic host cell containing mitochondria. Recent research has explored the maturation of rRNA and ribosome assembly in chloroplasts, along with their crucial role in plant survival and acclimation. Comparison between ancient and modern chloroplasts provides insights into the evolution of ribosome assembly factors, showing the emergence of newly evolved factors to help plants adapt to changing environments and signals.
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.
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