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One-billion-year-old epibionts highlight symbiotic ecological interactions in early eukaryote evolution
Tang, Qing1,2,3; Pang, Ke(庞科)4,5,6; Li, Guangjin4,5,7; Chen, Lei7; Yuan, Xunlai(袁训来)4,5,6; Xiao, Shuhai2,3
2021-09-01
Source PublicationGONDWANA RESEARCH
ISSN1342-937X
Volume97Pages:22-33
Abstract

Symbiosis represents close and long-term interactions-which can be mutualistic, commensalistic, or parasitic-between two different taxa. Symbiotic associations play a pivotal role in accelerating eukaryotic evolution and diversification. However, the Proterozoic fossil record of symbiosis is rarely documented despite the abundance of Proterozoic eukaryotes and their accelerated diversification in the Neoproterozoic. The scarcity of direct fossil evidence for symbiosis impedes our understanding of the ecological impact of symbiosis on the evolution and diversification of early eukaryotes. Here we report abundant dark discoidal, semicircular, or ovate structures preserved on the early Neoproterozoic eukaryotic fossils Tawuia and Sinosabellidites from North China. Our systematic analyses show that these dark structures were originally spheroidal organisms, which are interpreted as eukaryotic epibionts that lived on the surface of and may have benefited from an association with their Tawuia and Sinosabellidites hosts, representing a case of ectosymbiotic commensalism. The new material represents some of the earliest known fossil evidence of eukaryotic symbiosis which, together with other contemporaneous evolutionary innovations, may have contributed to the ecological expansion of eukaryotes in the Neoproterozoic. This study opens the door to new investigation of ecological interactions in Proterozoic marine ecosystems. (c) 2021 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.

KeywordTonian Period North China Tawuia Sinosabellidites Symbiosis
DOI10.1016/j.gr.2021.05.008
Indexed BySCI
Language英语
WOS KeywordORGANIC-WALLED MICROFOSSILS ; CARBONACEOUS COMPRESSION FOSSILS ; NORTH CHINA CRATON ; MACKENZIE MOUNTAINS ; MULTICELLULARITY ; PREDATION ; DYNAMICS ; RECORD ; ANHUI
Funding ProjectNASA Exobiology Program[80NSSC18K1086] ; Paleontological Society and Geological Society of America ; National Natural Science Foundation of China[41921002] ; National Natural Science Foundation of China[41602007] ; Youth Innovation Promotion Association CAS[2021307] ; Science Foundation of Jiangsu Province of China[BK20161090] ; State Key Laboratory of Palaeobiology and Stratigraphy[193126] ; State Key Laboratory of Palaeobiology and Stratigraphy[20201102] ; State Key Laboratory of Palaeobiology and Stratigraphy[20162109]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000671547700002
Funding OrganizationNASA Exobiology Program ; Paleontological Society and Geological Society of America ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Science Foundation of Jiangsu Province of China ; State Key Laboratory of Palaeobiology and Stratigraphy
PublisherELSEVIER
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/38403
Collection中国科学院南京地质古生物研究所
Corresponding AuthorXiao, Shuhai
Affiliation1.Univ Hong Kong, Dept Earth Sci, Pokfulam, Hong Kong, Peoples R China
2.Virginia Tech, Dept Geosci, Blacksburg, VA 24061 USA
3.Virginia Tech, Global Change Ctr, Blacksburg, VA 24061 USA
4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Aboratory Palaeobiol & Stratig, Nanjing 210008, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
7.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China
Recommended Citation
GB/T 7714
Tang, Qing,Pang, Ke,Li, Guangjin,et al. One-billion-year-old epibionts highlight symbiotic ecological interactions in early eukaryote evolution[J]. GONDWANA RESEARCH,2021,97:22-33.
APA Tang, Qing,Pang, Ke,Li, Guangjin,Chen, Lei,Yuan, Xunlai,&Xiao, Shuhai.(2021).One-billion-year-old epibionts highlight symbiotic ecological interactions in early eukaryote evolution.GONDWANA RESEARCH,97,22-33.
MLA Tang, Qing,et al."One-billion-year-old epibionts highlight symbiotic ecological interactions in early eukaryote evolution".GONDWANA RESEARCH 97(2021):22-33.
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