The control of RNA stability is essential for gene regulation in eukaryotes. Hirayama et al. demonstrate that poly(A)-specific ribonuclease and bacterial-type poly(A) polymerase control mitochondrial mRNA poly(A) status in Arabidopsis, showing that a unique system regulating mitochondrial function operates in plants.
- Takashi Hirayama
- Takakazu Matsuura
- Shimpei Hayashi