Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >
A unique life cycle transition in the red seaweed Pyropia yezoensis depends on apospory
This item is licensed under:Creative Commons Attribution 4.0 International
Title: | A unique life cycle transition in the red seaweed Pyropia yezoensis depends on apospory |
Authors: | Mikami, Koji Browse this author →KAKEN DB | Li, Chengze Browse this author | Irje, Ryunosuke Browse this author | Hama, Yoichiro Browse this author →KAKEN DB |
Issue Date: | 7-Aug-2019 |
Publisher: | Nature Publishing Group |
Journal Title: | Communications biology |
Volume: | 2 |
Start Page: | UNSP 299 |
Publisher DOI: | 10.1038/s42003-019-0549-5 |
Abstract: | Plant life cycles consist of two temporally separated stages: a haploid gametophyte and a diploid sporophyte. In plants employing a haploid-diploid sexual life cycle, the transition from sporophyte to gametophyte generally depends on meiosis. However, previous work has shown that in the red seaweed Pyropia yezoensis, this transition is independent of meiosis, though how and when it occurs is unknown. Here, we explored this question using transcriptomic profiling of P. yezoensis gametophytes, sporophytes, and conchosporangia parasitically produced on sporophytes. We identify a knotted-like homeobox gene that is predominately expressed in the conchosporangium and may determine its identity. We also find that spore-like single cells isolated from the conchosporangium develop directly into gametophytes, indicating that the gametophyte identity is established before the release of conchospores and prior to the onset of meiosis. Based on our findings, we propose a triphasic life cycle for P. yezoensis involving production of gametophytes by apospory. |
Rights: | https://creativecommons.org/licenses/by/4.0/ |
Type: | article |
URI: | http://hdl.handle.net/2115/75449 |
Appears in Collections: | 水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
|