气候变化领域集成服务门户(CCPortal): Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds

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DOI	10.1073/pnas.1910060117
	Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds
	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.
发表日期	2020
ISSN	0027-8424
起始页码	2551
结束页码	2559
卷号	117 期号:5
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.
英文关键词	Chlorophyta; Green algae; Phylogenomics; Phylogeny; Ulvophyceae
语种	英语
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
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/161070
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...
推荐引用方式 GB/T 7714	Cortona A.D.,Jackson C.J.,Bucchini F.,et al. Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds[J],2020,117(5).
APA	Cortona A.D..,Jackson C.J..,Bucchini F..,Van Bel M..,D’hondt S..,...&Leliaert F..(2020).Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds.Proceedings of the National Academy of Sciences of the United States of America,117(5).
MLA	Cortona A.D.,et al."Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds".Proceedings of the National Academy of Sciences of the United States of America 117.5(2020).