globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1910060117
论文题名:
Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds
作者: Cortona A.D.; Jackson C.J.; Bucchini F.; Van Bel M.; D’hondt S.; Skaloud P.; Delwiche C.F.; Knoll A.H.; Raven J.A.; Verbruggen H.; Vandepoele K.; De Clerck O.; Leliaert F.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:5
起始页码: 2551
结束页码: 2559
语种: 英语
英文关键词: Chlorophyta ; Green algae ; Phylogenomics ; Phylogeny ; Ulvophyceae
Scopus关键词: transcriptome ; Article ; benthos ; climate change ; controlled study ; DNA sequence ; glaciation ; grazing ; habitat structure ; molecular clock ; morphological trait ; Neoproterozoic ; nonhuman ; open reading frame ; phylogenetic tree ; phylogeny ; plant growth ; priority journal ; RNA sequence ; seaweed ; sequence alignment ; species diversity ; sunlight ; survival rate ; Trebouxiophyceae ; Ulvophyceae ; classification ; ecosystem ; green alga ; growth, development and aging ; molecular evolution ; phylogeny ; seaweed ; Chlorophyta ; Ecosystem ; Evolution, Molecular ; Phylogeny ; Seaweed
英文摘要: The Neoproterozoic Era records the transition from a largely bacterial to a predominantly eukaryotic phototrophic world, creating the foundation for the complex benthic ecosystems that have sustained Metazoa from the Ediacaran Period onward. This study focuses on the evolutionary origins of green seaweeds, which play an important ecological role in the benthos of modern sunlit oceans and likely played a crucial part in the evolution of early animals by structuring benthic habitats and providing novel niches. By applying a phylogenomic approach, we resolve deep relationships of the core Chlorophyta (Ulvophyceae or green seaweeds, and freshwater or terrestrial Chlorophyceae and Trebouxiophyceae) and unveil a rapid radiation of Chlorophyceae and the principal lineages of the Ulvophyceae late in the Neoproterozoic Era. Our time-calibrated tree points to an origin and early diversification of green seaweeds in the late Tonian and Cryogenian periods, an interval marked by two global glaciations with strong consequent changes in the amount of available marine benthic habitat. We hypothesize that unicellular and simple multicellular ancestors of green seaweeds survived these extreme climate events in isolated refugia, and diversified in benthic environments that became increasingly available as ice retreated. An increased supply of nutrients and biotic interactions, such as grazing pressure, likely triggered the independent evolution of macroscopic growth via different strategies, including true multicellularity, and multiple types of giant-celled forms. © 2020 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164341
Appears in Collections:气候变化与战略

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作者单位: Cortona, A.D., Department of Biology, Phycology Research Group, Ghent University, Ghent, 9000, Belgium, Department of Plant Biotechnology and Bioinformatics, Ghent University, Zwijnaarde, 9052, Belgium, Vlaams Instituut voor Biotechnologie Center for Plant Systems Biology, Zwijnaarde, 9052, Belgium, Bioinformatics Institute Ghent, Ghent University, Zwijnaarde, 9052, Belgium; Jackson, C.J., School of Biosciences, University of Melbourne, Melbourne, VIC 3010, Australia; Bucchini, F., Department of Plant Biotechnology and Bioinformatics, Ghent University, Zwijnaarde, 9052, Belgium, Vlaams Instituut voor Biotechnologie Center for Plant Systems Biology, Zwijnaarde, 9052, Belgium; Van Bel, M., Department of Plant Biotechnology and Bioinformatics, Ghent University, Zwijnaarde, 9052, Belgium, Vlaams Instituut voor Biotechnologie Center for Plant Systems Biology, Zwijnaarde, 9052, Belgium; D’hondt, S., Department of Biology, Phycology Research Group, Ghent University, Ghent, 9000, Belgium; Skaloud, P., Department of Botany, Faculty of Science, Charles University, Prague 2, CZ-12800, Czech Republic; Delwiche, C.F., Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, United States; Knoll, A.H., Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, United States; Raven, J.A., Division of Plant Sciences, University of Dundee, James Hutton Institute, Dundee, DD2 5DA, United Kingdom, School of Biological Sciences, University of Western AustraliaWA 6009, Australia, Climate Change Cluster, University of Technology, Ultimo, NSW 2006, Australia; Verbruggen, H., School of Biosciences, University of Melbourne, Melbourne, VIC 3010, Australia; Vandepoele, K., Department of Plant Biotechnology and Bioinformatics, Ghent University, Zwijnaarde, 9052, Belgium, Vlaams Instituut voor Biotechnologie Center for Plant Systems Biology, Zwijnaarde, 9052, Belgium, Bioinformatics Institute Ghent, Ghent University, Zwijnaarde, 9052, Belgium; De Clerck, O., Department of Biology, Phycology Research Group, Ghent University, Ghent, 9000, Belgium; Leliaert, F., Department of Biology, Phycology Research Group, Ghent University, Ghent, 9000, Belgium, Meise Botanic Garden, Meise, 1860, Belgium

Recommended Citation:
Cortona A.D.,Jackson C.J.,Bucchini F.,et al. Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(5)
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