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タイトル: | Genome analysis of Parmales, the sister group of diatoms, reveals the evolutionary specialization of diatoms from phago-mixotrophs to photoautotrophs |
著者: | Ban, Hiroki Sato, Shinya Yoshikawa, Shinya Yamada, Kazumasa Nakamura, Yoji Ichinomiya, Mutsuo Sato, Naoki Blanc-Mathieu, Romain Endo, Hisashi https://orcid.org/0000-0003-0016-1624 (unconfirmed) Kuwata, Akira Ogata, Hiroyuki |
著者名の別形: | 伴, 広輝 遠藤, 寿 緒方, 博之 |
キーワード: | Evolution Microbial ecology |
発行日: | 7-Jul-2023 |
出版者: | Springer Nature |
誌名: | Communications Biology |
巻: | 6 |
論文番号: | 697 |
抄録: | The order Parmales (class Bolidophyceae) is a minor group of pico-sized eukaryotic marine phytoplankton that contains species with cells surrounded by silica plates. Previous studies revealed that Parmales is a member of ochrophytes and sister to diatoms (phylum Bacillariophyta), the most successful phytoplankton group in the modern ocean. Therefore, parmalean genomes can serve as a reference to elucidate both the evolutionary events that differentiated these two lineages and the genomic basis for the ecological success of diatoms vs. the more cryptic lifestyle of parmaleans. Here, we compare the genomes of eight parmaleans and five diatoms to explore their physiological and evolutionary differences. Parmaleans are predicted to be phago-mixotrophs. By contrast, diatoms have lost genes related to phagocytosis, indicating the ecological specialization from phago-mixotrophy to photoautotrophy in their early evolution. Furthermore, diatoms show significant enrichment in gene sets involved in nutrient uptake and metabolism, including iron and silica, in comparison with parmaleans. Overall, our results suggest a strong evolutionary link between the loss of phago-mixotrophy and specialization to a silicified photoautotrophic life stage early in diatom evolution after diverging from the Parmales lineage. |
著作権等: | © The Author(s) 2023 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. |
URI: | http://hdl.handle.net/2433/285531 |
DOI(出版社版): | 10.1038/s42003-023-05002-x |
PubMed ID: | 37420035 |
出現コレクション: | 学術雑誌掲載論文等 |
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