Regulation of RNA Metabolism in Plant Adaptation to Cold
Posttranscriptional regulation of RNA metabolism, including RNA processing, splicing, transport, turnover, and translational control, is recognized as a key regulatory process in plant response to diverse environmental stresses, during which a variety of RNA-binding proteins (RBPs) perform as central regulators in cells. Over the past decades, several classes of RBPs have been identified from diverse plant species and their roles in stress response determined. In particular, the stress-responsive expression and functional roles of glycine-rich RNA-binding proteins (GRPs), cold shock domain proteins (CSPs), and DEAD-box RNA helicases (RHs) have been extensively investigated in Arabidopsis thaliana, rice (Oryza sativa), and wheat (Triticum aestivum). In this chapter, we will review the recent progress of our understanding of the roles of these RBPs during the cold adaptation process in monocotyledonous plants as well as in dicotyledonous plants, which shed new light on the importance of the regulation of mRNA metabolism and the role of RBPs as a central regulator in plant adaptation to cold.
KeywordsCold Stress Freezing Tolerance Cold Adaptation mRNA Export Cold Stress Response
Cold shock domain
Cold shock protein
Glycine-rich RNA-binding protein
Zinc finger GRP
The authors were supported, in part, by a grant from the Next-Generation BioGreen21 Program (PJ00820303), Rural Development Administration, Republic of Korea, and by the Mid-career Researcher Program (2011–0017357) through the National Research Foundation of Korea grant funded by the Ministry of Education, Science and Technology, Republic of Korea.