Plant Science 262 (2017) 169–174 Contents lists available at ScienceDirect Plant Science journal homepage: www.elsevier.com/locate/plantsci Review article MARK ⁎ ⁎ a, b, Diane C. Bassham , Gustavo C. MacIntosh Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA 50011, USA Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA 50011, USA ARTICLE I NFO ABSTRACT Keywords: Ribosomes are essential molecular machines that require a large cellular investment, yet the mechanisms of their Autophagy turnover are not well understood in any eukaryotic organism. Recent advances in Arabidopsis suggest that plants Degradation utilize selective mechanisms to transport rRNA or ribosomes to the vacuole, where rRNA is degraded and the Ribosome breakdown products recycled to maintain cellular homeostasis. This review focuses on known mechanisms of rRNA rRNA turnover and explores unanswered questions on the speciﬁcity and pathways of ribosome turnover and the Vacuole role of this process in maintenance of cellular homeostasis. 1. Introduction processes involved in plant ribosome biogenesis are not as well characterized as those of other model eukaryotes. However, a large As the machines for protein synthesis, ribosomes are essential to life. number of ribosome processing factors that participate in
Plant Science – Elsevier
Published: Sep 1, 2017
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