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The Early Ediacaran Caveasphaera Foreshadows the Evolutionary Origin of Animal-like Embryology
Yin, Zongjun (殷宗军)1,2; Vargas, Kelly3; Cunningham, John3; Bengtson, Stefan4; Zhu, Maoyan (朱茂炎)1,2,6; Marone, Federica5; Donoghue, Philip3
2019-12-16
Source PublicationCURRENT BIOLOGY
ISSN0960-9822
Volume29Issue:24Pages:4307-4314
Abstract

The Ediacaran Weng'an Biota (Doushantuo Formation, 609 Ma old) is a rich microfossil assemblage that preserves biological structure to a subcellular level of fidelity and encompasses a range of developmental stages [1]. However, the animal embryo interpretation of the main components of the biota has been the subject of controversy [2, 3]. Here, we describe the development of Caveasphaera, which varies in morphology from lensoid to a hollow spheroidal cage [4] to a solid spheroid [5] but has largely evaded description and interpretation. Caveasphaera is demonstrably cellular and develops within an envelope by cell division and migration, first defining the spheroidal perimeter via anastomosing cell masses that thicken and ingress as strands of cells that detach and subsequently aggregate in a polar region. Concomitantly, the overall diameter increases as does the volume of the cell mass, but after an initial phase of reductive palinotomy, the volume of individual cells remains the same through development. The process of cell ingression, detachment, and polar aggregation is analogous to gastrulation; together with evidence of functional cell adhesion and development within an envelope, this is suggestive of a holozoan affinity. Parental investment in the embryonic development of Caveasphaera and cooccurring Tianzhushania and Spiralicellula, as well as delayed onset of later development, may reflect an adaptation to the heterogeneous nature of the early Ediacaran nearshore marine environments in which early animals evolved.

DOI10.1016/j.cub.2019.10.057
Language英语
WOS KeywordNEOPROTEROZOIC DOUSHANTUO FORMATION ; WENGAN BIOTA ; FOSSILS ; ALGAE ; MICROFOSSILS ; ONTOGENY ; GUIZHOU ; NUCLEI ; CHINA
Funding ProjectChinese Academy of Sciences (CAS)[XDB 26000000] ; Chinese Academy of Sciences (CAS)[18000000] ; Newton Advanced Fellowship ; Natural Environment Research Council[NE/P013678/1] ; National Natural Science Foundation of China[41672013] ; Youth Innovation Promotion Association of the CAS[2017360] ; European Union's Horizon 2020 research and innovation programme[730872]
WOS Research AreaBiochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics ; Cell Biology
WOS SubjectBiochemistry & Molecular Biology ; Biology ; Cell Biology
WOS IDWOS:000502799700036
Funding OrganizationChinese Academy of Sciences (CAS) ; Newton Advanced Fellowship ; Natural Environment Research Council ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the CAS ; European Union's Horizon 2020 research and innovation programme
PublisherCELL PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/29752
Collection中国科学院南京地质古生物研究所
Corresponding AuthorYin, Zongjun (殷宗军); Donoghue, Philip
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Bristol, Sch Earth Sci, Life Sci Bldg,Tyndall Ave, Bristol BS8 1TQ, Avon, England
4.Swedish Museum Nat Hist, Dept Palaeobiol, Box 50007, S-10405 Stockholm SE, Sweden
5.Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Yin, Zongjun ,Vargas, Kelly,Cunningham, John,et al. The Early Ediacaran Caveasphaera Foreshadows the Evolutionary Origin of Animal-like Embryology[J]. CURRENT BIOLOGY,2019,29(24):4307-4314.
APA Yin, Zongjun .,Vargas, Kelly.,Cunningham, John.,Bengtson, Stefan.,Zhu, Maoyan .,...&Donoghue, Philip.(2019).The Early Ediacaran Caveasphaera Foreshadows the Evolutionary Origin of Animal-like Embryology.CURRENT BIOLOGY,29(24),4307-4314.
MLA Yin, Zongjun ,et al."The Early Ediacaran Caveasphaera Foreshadows the Evolutionary Origin of Animal-like Embryology".CURRENT BIOLOGY 29.24(2019):4307-4314.
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