干旱区生态环境知识资源中心(Arid): Mirroring the effect of geological evolution: Protist divergence in the Atacama Desert

Arid

DOI	10.1016/j.gloplacha.2020.103193
	Mirroring the effect of geological evolution: Protist divergence in the Atacama Desert
	Arndt, Hartmut; Ritter, Benedikt; Rybarski, Alexandra; Schiwitza, Sabine; Dunai, Tibor; Nitsche, Frank
通讯作者	Nitsche, F
来源期刊	GLOBAL AND PLANETARY CHANGE
ISSN	0921-8181
EISSN	1872-6364
出版年	2020
卷号	190
英文摘要	Unicellular eukaryotes, also called protists, are potentially fast evolving organisms. The small size of protists, their fast reproduction rate and ability to form cysts as well as their adaptability to extreme conditions allow them to associate to endemic animals, plants, saline lakes and soil even in extremely arid systems. These properties make unicellular eukaryotes ideal model organisms to combine studies on evolutionary processes of very different groups of organisms and across very different time scales comprising even geological ones. The hyperarid Atacama Desert offers a study area unique on Earth, where a predominantly arid climate was present for millions of years. A comprehensive analysis of the diversity of unicellular eukaryotes in different habitats (endemic desert plant phyllosphere, the gut of endemic darkling beetles, isolated hypersaline waters) revealed a dataset distinct and divergent from other regions on Earth. We used standard isolation and cultivation protocols to elucidate divergence patterns for a variety of very different and independent taxonomic groups of protists such as gregarines and ciliates among alveolates, placidids among stramenopiles and choanoflagellates among opisthokonts. The ability to rapidly adapt to extreme environments, which enhance a fast divergence rate at high UV radiation, has only been reported for prokaryotes up to now. The establishment of arid to hyperarid conditions in the Atacama Desert about 20 Ma ago has obviously led to an isolation of protist populations followed by a radiation of species. There are only a few regions on Earth with similar extreme salinity conditions reducing the chance of an exchange between protist populations. Divergence patterns in unicellular eukaryotes in very different phylogenetic groups independently mirror the effect of geological evolution and climate variability during the Neogene.
英文关键词	Atacama Desert Co-evolution Choanoflagellates Gregarines Hypersaline waters Protist evolution
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000536927700008
WOS关键词	MOLECULAR CLOCK ; CLIMATE-CHANGE ; ARID SOILS ; DIVERSITY ; ORIGIN ; BASIN ; DIVERSIFICATION ; MICROORGANISMS ; EUKARYOTES ; UPLIFT
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324590
作者单位	[Arndt, Hartmut; Rybarski, Alexandra; Schiwitza, Sabine; Nitsche, Frank] Univ Cologne, Inst Zool, Gen Ecol, Zuelpicher Str 47b, D-50674 Cologne, Germany; [Ritter, Benedikt; Dunai, Tibor] Univ Cologne, Inst Geol & Mineral, Cosmogen Nuclides & Earth Surface Proc, Zuelpicher Str 49b, D-50674 Cologne, Germany
推荐引用方式 GB/T 7714	Arndt, Hartmut,Ritter, Benedikt,Rybarski, Alexandra,et al. Mirroring the effect of geological evolution: Protist divergence in the Atacama Desert[J],2020,190.
APA	Arndt, Hartmut,Ritter, Benedikt,Rybarski, Alexandra,Schiwitza, Sabine,Dunai, Tibor,&Nitsche, Frank.(2020).Mirroring the effect of geological evolution: Protist divergence in the Atacama Desert.GLOBAL AND PLANETARY CHANGE,190.
MLA	Arndt, Hartmut,et al."Mirroring the effect of geological evolution: Protist divergence in the Atacama Desert".GLOBAL AND PLANETARY CHANGE 190(2020).