globalchange  > 气候变化与战略
DOI: 10.1038/s41396-019-0528-3
论文题名:
A genomics approach reveals the global genetic polymorphism, structure, and functional diversity of ten accessions of the marine model diatom Phaeodactylum tricornutum
作者: Rastogi A.; Vieira F.R.J.; Deton-Cabanillas A.-F.; Veluchamy A.; Cantrel C.; Wang G.; Vanormelingen P.; Bowler C.; Piganeau G.; Hu H.; Tirichine L.
刊名: ISME Journal
ISSN: 17517362
出版年: 2020
卷: 14, 期:2
语种: 英语
Scopus关键词: asexual reproduction ; diatom ; dispersal ; dominance ; functional role ; genetic analysis ; genetic structure ; genomics ; polymorphism ; Bacillariophyta ; Phaeodactylum tricornutum ; aquatic environment ; article ; asexual reproduction ; cladistics ; functional genomics ; gene linkage disequilibrium ; gene structure ; genetic polymorphism ; metabolism ; nonhuman ; Phaeodactylum tricornutum ; sea ; structure activity relation ; whole genome sequencing
英文摘要: Diatoms emerged in the Mesozoic period and presently constitute one of the main primary producers in the world’s ocean and are of a major economic importance. In the current study, using whole genome sequencing of ten accessions of the model diatom Phaeodactylum tricornutum, sampled at broad geospatial and temporal scales, we draw a comprehensive landscape of the genomic diversity within the species. We describe strong genetic subdivisions of the accessions into four genetic clades (A–D) with constituent populations of each clade possessing a conserved genetic and functional makeup, likely a consequence of the limited dispersal of P. tricornutum in the open ocean. We further suggest dominance of asexual reproduction across all the populations, as implied by high linkage disequilibrium. Finally, we show limited yet compelling signatures of genetic and functional convergence inducing changes in the selection pressure on many genes and metabolic pathways. We propose these findings to have significant implications for understanding the genetic structure of diatom populations in nature and provide a framework to assess the genomic underpinnings of their ecological success and impact on aquatic ecosystems where they play a major role. Our work provides valuable resources for functional genomics and for exploiting the biotechnological potential of this model diatom species. © 2019, The Author(s), under exclusive licence to International Society for Microbial Ecology.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159705
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作者单位: Institut de biologie de l’Ecole normale supérieure (IBENS), Ecole normale supérieure, CNRS, INSERM, PSL Université Paris, Paris, 75005, France; Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; Department of Biology, Research Group Protistology and Aquatic Ecology, Ghent University, Krijgslaan 281/S8 9000, Gent, Belgium; Sorbonne Universités, UPMC Univ Paris 06, CNRS, Biologie Intégrative des Organismes Marins (BIOM), Observatoire Océanologique, Banyuls/Mer, F-66650, France; Corteva Agriscience™, The V Ascendas, Atria Block, 12th Floor, Madhapur, Hyderabad 500081, India; Biological and Environmental Sciences and Engineering Division, Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia; Université de Nantes, CNRS, UFIP, UMR 6286, Nantes, F-44000, France

Recommended Citation:
Rastogi A.,Vieira F.R.J.,Deton-Cabanillas A.-F.,et al. A genomics approach reveals the global genetic polymorphism, structure, and functional diversity of ten accessions of the marine model diatom Phaeodactylum tricornutum[J]. ISME Journal,2020-01-01,14(2)
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