![]() ![]() Nonsense-mediated mRNA decay modulates immune receptor levels to regulate plant antibacterial defense. The LSM1-7 complex differentially regulates Arabidopsis tolerance to abiotic stress conditions by promoting selective mRNA decapping. ABA-unresponsive SnRK2 protein kinases regulate mRNA decay under osmotic stress in plants. Dehydration stress activates Arabidopsis MPK6 to signal DCP1 phosphorylation. In plants, decapping prevents RDR6-dependent production of small interfering RNAs from endogenous mRNAs. The mRNA decay factor PAT1 functions in a pathway including MAP kinase 4 and immune receptor SUMM2. LSM proteins provide accurate splicing and decay of selected transcripts to ensure normal Arabidopsis development. Arabidopsis decapping 5 is required for mRNA decapping, P-body formation, and translational repression during postembryonic development. Components of the Arabidopsis mRNA decapping complex are required for early seedling development. Arabidopsis DCP2, DCP1, and VARICOSE form a decapping complex required for postembryonic development. XRN 5′→3′ exoribonucleases: structure, mechanisms and functions. Proteins involved in the degradation of cytoplasmic mRNA in the major eukaryotic model systems. Arabidopsis mRNA decay landscape arises from specialized RNA decay substrates, decapping-mediated feedback, and redundancy. Conserved RNase II domain protein functions in cytoplasmic mRNA decay and suppresses Arabidopsis decapping mutant phenotypes. Heat-shock protein HSP101 affects the release of ribosomal protein mRNAs for recovery after heat shock. Selective mRNA sequestration by OLIGOURIDYLATE-BINDING PROTEIN 1 contributes to translational control during hypoxia in Arabidopsis. P-body purification reveals the condensation of repressed mRNA regulons. Decapping and decay of messenger RNA occur in cytoplasmic processing bodies. Polysomes, stress granules, and processing bodies: a dynamic triumvirate controlling cytoplasmic mRNA fate and function. ![]()
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