Polyadenylation-mediated RNA degradation in plant mitochondria.
In plant mitochondria, polyadenylation-mediated RNA degradation is involved in several key aspects of genome expression, including RNA maturation, RNA turnover, and RNA surveillance. We describe here a combination of in vivo, in vitro, and in organello methods that have been developed or optimized to characterize this RNA degradation pathway. These approaches include several PCR-based methods designed to identify polyadenylated RNA substrates, as well as in vitro and in organello systems, to study functional aspects of the RNA degradation processes. Taken together, identification of RNA substrates combined with information from degradation assays are invaluable tools to dissect the mechanisms and roles of RNA degradation in plant mitochondrial genome expression.
Holec
Sarah
S
Institut de Biologie Moléculaire des Plantes, Centre National de la Recherche Scientifique, Unité Propre de Recherche 2357, Conventionné avec l'Université Louis Pasteur, Strasbourg, France.
Lange
Heike
H
Dietrich
André
A
Gagliardi
Dominique
D
D001483:Base Sequence; D017931:DNA Primers; D018076:DNA, Complementary; D004587:Electrophoresis, Agar Gel; D008928:Mitochondria / Q000378:metabolism*; D010944:Plants / Q000235:genetics*; D011061:Poly A / Q000378:metabolism*; D018749:RNA, Plant / Q000378:metabolism*; D020133:Reverse Transcriptase Polymerase Chain Reaction
D017931:DNA Primers; D018076:DNA, Complementary; D018749:RNA, Plant; D011061:Poly A