title: Polyadenylation-assisted RNA degradation processes in plants.
abstract: Polyadenylation is a multifunctional post-transcriptional modification that is best known for stabilizing eukaryotic mRNAs and promoting their translation. However, the primordial role of polyadenylation is to target RNAs for degradation by 3' to 5' exoribonucleases. Polyadenylation-assisted RNA degradation contributes to post-transcriptional control in the three genetic compartments of a plant cell: the nucleus, the chloroplast and the mitochondrion. Here, we review the current knowledge of this RNA degradation pathway in these compartments, highlighting recent results that emphasize the crucial role of polyadenylation-assisted RNA degradation in plant genome expression. We also discuss other possible roles of polyadenylation and its sister process polyuridylation.
authors.affiliation: Institut de Biologie Moléculaire des Plantes du CNRS, Université de Strasbourg, 12 Rue du Général Zimmer, 67000 Strasbourg, France.
authors.forename: Heike
authors.initials: H
authors.lastname: Lange
authors.forename: François M
authors.initials: FM
authors.lastname: Sement
authors.forename: Jean
authors.initials: J
authors.lastname: Canaday
authors.forename: Dominique
authors.initials: D
authors.lastname: Gagliardi
mesh_terms: D002467:Cell Nucleus / Q000235:genetics; D008928:Mitochondria / Q000235:genetics; D010944:Plants / Q000201:enzymology / Q000235:genetics*; D026723:Polyadenylation / Q000235:genetics*; D020871:RNA Stability / Q000235:genetics*; D018747:RNA, Chloroplast / Q000378:metabolism
chemical_list: D018747:RNA, Chloroplast