Chromosome-level genome assembly of a deep-sea Venus flytrap sea anemone sheds light upon adaptations to an extremely oligotrophic environment
文献类型：期刊论文
| 作者 | Li, Junyuan2,3 ; Zhan, Zifeng3; Li, Yang3; Sun, Yanan3; Zhou, Tong3; Xu, Kuidong1,3,4
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| 刊名 | MOLECULAR ECOLOGY
 |
| 出版日期 | 2024-08-21 |
| 页码 | 18 |
| 关键词 | cellular autophagy chromosome fusion food shortage muscle neuron novel morphology |
| ISSN号 | 0962-1083 |
| DOI | 10.1111/mec.17504 |
| 通讯作者 | Xu, Kuidong(kxu@qdio.ac.cn) |
| 英文摘要 | The Venus flytrap sea anemone Actinoscyphia liui inhabits the nutrient-limited deep ocean in the tropical western Pacific. Compared with most other sea anemones, it has undergone a distinct modification of body shape similar to that of the botanic flytrap. However, the molecular mechanism by which such a peculiar sea anemone adapts to a deep-sea oligotrophic environment is unknown. Here, we report the chromosomal-level genome of A. liui constructed from PacBio and Hi-C data. The assembled genome is 522 Mb in size and exhibits a continuous scaffold N50 of 58.4 Mb. Different from most other sea anemones, which typically possess 14-18 chromosomes per haplotype, A. liui has only 11. The reduced number of chromosomes is associated with chromosome fusion, which likely represents an adaptive strategy to economize energy in oligotrophic deep-sea environments. Comparative analysis with other deep-sea sea anemones revealed adaptive evolution in genes related to cellular autophagy (TMBIM6, SESN1, SCOCB and RPTOR) and mitochondrial energy metabolism (MDH1B and KAD2), which may aid in A. liui coping with severe food scarcity. Meanwhile, the genome has undergone at least two rounds of expansion in gene families associated with fast synaptic transmission, facilitating rapid responses to water currents and prey. Positive selection was detected on putative phosphorylation sites of muscle contraction-related proteins, possibly further improving feeding efficiency. Overall, the present study provides insights into the molecular adaptation to deep-sea oligotrophic environments and sheds light upon potential effects of a novel morphology on the evolution of Cnidaria. |
| WOS关键词 | MULTIPLE SEQUENCE ALIGNMENT ; PHYLOGENETIC ANALYSIS ; READ ALIGNMENT ; PROTEIN ; TOOL ; TRANSCRIPTOME ; SELECTION ; RECONSTRUCTION ; INFERENCE ; EVOLUTION |
| 资助项目 | National Natural Science Foundation of China[41930533] ; National Natural Science Foundation of China[31970489] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Senior User Project of R/V KEXUE of the Center for Ocean Mega- Science, Chinese Academy of Sciences[KEXUE2019GZ04] ; Senior User Project of R/V KEXUE of the Center for Ocean Mega- Science, Chinese Academy of Sciences[KEXUE2020GZ02] |
| WOS研究方向 | Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:001295058200001 |
| 出版者 | WILEY |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/199609]  |
| 专题 | 海洋研究所_海洋生物分类与系统演化实验室 |
| 通讯作者 | Xu, Kuidong |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Taizhou Vocat Coll Sci & Technol, Coll Agr & Bioengn, Taizhou 318020, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Lab Marine Organism Taxon & Phylogeny, Qingdao Key Lab Marine Biodivers & Conservat, Qingdao 266071, Peoples R China 4.Qingdao Marine Sci & Technol Ctr, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Junyuan,Zhan, Zifeng,Li, Yang,et al. Chromosome-level genome assembly of a deep-sea Venus flytrap sea anemone sheds light upon adaptations to an extremely oligotrophic environment[J]. MOLECULAR ECOLOGY,2024:18. |
| APA | Li, Junyuan,Zhan, Zifeng,Li, Yang,Sun, Yanan,Zhou, Tong,&Xu, Kuidong.(2024).Chromosome-level genome assembly of a deep-sea Venus flytrap sea anemone sheds light upon adaptations to an extremely oligotrophic environment.MOLECULAR ECOLOGY,18. |
| MLA | Li, Junyuan,et al."Chromosome-level genome assembly of a deep-sea Venus flytrap sea anemone sheds light upon adaptations to an extremely oligotrophic environment".MOLECULAR ECOLOGY (2024):18. |
入库方式： OAI收割
来源：海洋研究所
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