| Title: | How did a duplicated gene copy evolve into a restorer-of-fertility gene in a plant? The case of Oma1 |
| Authors: | Arakawa, Takumi Browse this author |
| Sugaya, Hajime Browse this author |
| Katsuyama, Takaya Browse this author |
| Honma, Yujiro Browse this author →KAKEN DB |
| Matsui, Katsunori Browse this author |
| Matsuhira, Hiroaki Browse this author →KAKEN DB |
| Kuroda, Yosuke Browse this author →KAKEN DB |
| Kitazaki, Kazuyoshi Browse this author →KAKEN DB |
| Kubo, Tomohiko Browse this author →KAKEN DB |
| Keywords: | nuclear–mitochondrial interaction |
| gene duplication |
| cytoplasmic male sterility |
| neofunctionalization |
| plant reproduction |
| Issue Date: | 6-Nov-2019 |
| Publisher: | The Royal Society |
| Journal Title: | Royal Society Open Science |
| Volume: | 6 |
| Issue: | 11 |
| Start Page: | 190853 |
| Publisher DOI: | 10.1098/rsos.190853 |
| Abstract: | Restorer-of-fertility (Rf) is a suppressor of cytoplasmic male sterility (CMS), a mitochondrion-encoded trait that has been reported in many plant species. The occurrence of CMS is considered to be independent in each lineage; hence, the question of how Rf evolved was raised. Sugar beet Rf resembles Oma1, a gene for quality control of the mitochondrial inner membrane. Oma1 homologues comprise a small gene family in the sugar beet genome, unlike Arabidopsis and other eukaryotes. The sugar beet sequence that best matched Arabidopsis atOma1 was named bvOma1; sugar beet Rf (RF1-Oma1) was another member. During anther development, atOma1 mRNA was detected from the tetrad to the microspore stages, whereas bvOma1 mRNA was detected at the microspore stage and RF1-Oma1 mRNA was detected during the meiosis and tetrad stages. A transgenic study revealed that, whereas RF1-Oma1 can bind to a CMS-specific protein and alter the higher-order structure of the CMS-specific protein complex, neither bvOma1 nor atOma1 show such activity. We favour the hypothesis that an ancestral Oma1 gene duplicated to form a small gene family, and that one of the copies evolved and acquired a novel expression pattern and protein function as an Rf, i.e. RF1-Oma1 evolved via neofunctionalization. |
| Rights: | © 2019 The Authors. Published by the Royal Society under the terms of the Creative
Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits
unrestricted use, provided the original author and source are credited. |
| http://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/76054 |
| Appears in Collections: | 農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
