Author
Listed:
- Takashi Hirayama
(Institute of Plant Science and Resources, Okayama University)
- Takakazu Matsuura
(Institute of Plant Science and Resources, Okayama University)
- Sho Ushiyama
(Graduate School of Nanobioscience, Yokohama City University)
- Mari Narusaka
(Research Institute for Biological Sciences Okayama)
- Yukio Kurihara
(Plant Science Center, RIKEN)
- Michiko Yasuda
(RIKEN Innovation Center)
- Misato Ohtani
(Biomass Engineering Program, RIKEN)
- Motoaki Seki
(Plant Science Center, RIKEN)
- Taku Demura
(Biomass Engineering Program, RIKEN)
- Hideo Nakashita
(RIKEN Innovation Center)
- Yoshihiro Narusaka
(Research Institute for Biological Sciences Okayama)
- Shimpei Hayashi
(Graduate School of Nanobioscience, Yokohama City University)
Abstract
Coordination of gene expression in the organelles and the nucleus is important for eukaryotic cell function. Transcriptional and post-transcriptional gene regulation in mitochondria remains incompletely understood in most eukaryotes, including plants. Here we show that poly(A)-specific ribonuclease, which influences the poly(A) status of cytoplasmic mRNA in many eukaryotes, directly regulates the poly(A) tract of mitochondrial mRNA in conjunction with a bacterial-type poly(A) polymerase, AGS1, in Arabidopsis. An Arabidopsis poly(A)-specific ribonuclease-deficient mutant, ahg2-1, accumulates polyadenylated mitochondrial mRNA and shows defects in mitochondrial protein complex levels. Mutations of AGS1 suppress the ahg2-1 phenotype. Mitochondrial localizations of AHG2 and AGS1 are required for their functions in the regulation of the poly(A) tract of mitochondrial mRNA. Our findings suggest that AHG2 and AGS1 constitute a regulatory system that controls mitochondrial mRNA poly(A) status in Arabidopsis.
Suggested Citation
Takashi Hirayama & Takakazu Matsuura & Sho Ushiyama & Mari Narusaka & Yukio Kurihara & Michiko Yasuda & Misato Ohtani & Motoaki Seki & Taku Demura & Hideo Nakashita & Yoshihiro Narusaka & Shimpei Haya, 2013.
"A poly(A)-specific ribonuclease directly regulates the poly(A) status of mitochondrial mRNA in Arabidopsis,"
Nature Communications, Nature, vol. 4(1), pages 1-9, October.
Handle:
RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3247
DOI: 10.1038/ncomms3247
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