Abstract
RNA granules, such as stress granules and processing bodies, can balance the storage, degradation, and translation of mRNAs in diverse eukaryotic organisms. The sessile nature of plants demands highly versatile strategies to respond to environmental fluctuations. In this review, we discuss recent findings of the dynamics and functions of these RNA granules in plants undergoing developmental reprogramming or responding to environmental stresses. Special foci include the dynamic assembly, disassembly, and regulatory roles of these RNA granules in determining the fate of mRNAs.
Highlights
A healthy balance of mRNA destinies, including decay, translation, and sequestration, is crucial for plants to optimize growth and development and combat biotic/abiotic environmental stresses
In plants, p-bodies contain many RNA-binding proteins (RBPs) and key factors for mRNAs decay, including decapping complexes, 50 to 30 exoribonuclease, de-adenylation factors, small-RNA-dependent slicer protein Argonaute1, and factors involved in nonsense-mediated mRNA decay [7]
Given that the composition of both stress granules (SGs) and p-bodies has been reviewed recently [6], the current review focuses on the recent advancements of the dynamic formation and functions of these two types of RNA granules in plants
Summary
A healthy balance of mRNA destinies, including decay, translation, and sequestration, is crucial for plants to optimize growth and development and combat biotic/abiotic environmental stresses. The translation control of mRNAs often involves the formation of mRNA–ribonucleoprotein (mRNP) complexes, namely ribosomes/polysomes, and membraneless. In plants, p-bodies contain many RNA-binding proteins (RBPs) and key factors for mRNAs decay, including decapping complexes, 50 to 30 exoribonuclease, de-adenylation factors, small-RNA-dependent slicer protein Argonaute, and factors involved in nonsense-mediated mRNA decay [7]. SGs are composed of polyadenylated mRNAs, translation initiating factors, the 40S ribosome subunit, RNA-binding proteins, and regulators of gene silencing [6]. In addition to the conserved components for SG assembly and dynamics, this study discovered important regulators and stress-related proteins associated with. Given that the composition of both SGs and p-bodies has been reviewed recently [6], the current review focuses on the recent advancements of the dynamic formation and functions of these two types of RNA granules in plants. Plants 2020, 9, 1122 reviewed recently [6], the current review focuses on the recent advancements of the dynamic formation
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