Asynchronized cell division in embryo-like fossils from the Ediacaran Zhenba microfossil assemblage
Zhang, Yuan2,3; Zhang, Xingliang1,2,3; Liu, Cong2,3
刊名EVOLUTION & DEVELOPMENT
2022-10-25
页码7
关键词asynchronized cell division Ediacaran embryo-like fossil Zhenba microfossil assemblage
ISSN号1520-541X
DOI10.1111/ede.12423
英文摘要

Ediacaran embryo-like spherical fossils exhibit diverse cell adhesion patterns resembling partial cleavage-stage embryos of living animals. Two three-celled specimens characterized by a pair of small cells overlying a large cell have been recovered from the Ediacaran Zhenba microfossil assemblage. Their cell adhesion pattern is highly comparable to a phenomenon reported from the Weng'an biota that was interpreted as fossil embryos undergoing discoidal cleavage. However, our specimens contain fewer cells and thus probably represent developmental precursors of the Weng'an counterparts. Additionally, new material shows several anatomical features that are inconsistent with an embryo interpretation, including (1) an unusually large volume of "blastomeres," (2) a putative nucleus preserved within the large "yolk cell," and (3) completely separated cells. Collectively, the Zhenba embryo-like specimens permit a reconstruction of the consecutive developmental sequence from single-celled individuals to the three-celled individuals, leading us to interpret the newly found specimens as products of abnormal development of Ediacaran embryo-like organisms whose affinity remains unresolved.

资助项目National Natural Science Foundation of China[41890845] ; National Natural Science Foundation of China[42102012] ; National Natural Science Foundation of China[41621003] ; National Natural Science Foundation of China[41930319] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; 111 Project[D17013] ; Key Scientific and Technological Innovation Team Project in Shaanxi Province
WOS关键词NEOPROTEROZOIC DOUSHANTUO FORMATION ; ANIMAL EMBRYOS ; PRESERVATION ; CYTOKINESIS ; GUIZHOU ; NUCLEI ; WENGAN
WOS研究方向Evolutionary Biology ; Developmental Biology ; Genetics & Heredity
语种英语
出版者WILEY
WOS记录号WOS:000871378300001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; 111 Project ; Key Scientific and Technological Innovation Team Project in Shaanxi Province
内容类型期刊论文
源URL[http://ir.nigpas.ac.cn/handle/332004/41337]  
专题中国科学院南京地质古生物研究所
通讯作者Zhang, Xingliang
作者单位1.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, Nanjing, Peoples R China
2.Northwest Univ, Shaanxi Key Lab Early Life & Environm, Xian 710069, Peoples R China
3.Northwest Univ, State Key Lab Continental Dynam, Dept Geol, Xian 710069, Peoples R China
推荐引用方式
GB/T 7714
Zhang, Yuan,Zhang, Xingliang,Liu, Cong. Asynchronized cell division in embryo-like fossils from the Ediacaran Zhenba microfossil assemblage[J]. EVOLUTION & DEVELOPMENT,2022:7.
APA Zhang, Yuan,Zhang, Xingliang,&Liu, Cong.(2022).Asynchronized cell division in embryo-like fossils from the Ediacaran Zhenba microfossil assemblage.EVOLUTION & DEVELOPMENT,7.
MLA Zhang, Yuan,et al."Asynchronized cell division in embryo-like fossils from the Ediacaran Zhenba microfossil assemblage".EVOLUTION & DEVELOPMENT (2022):7.
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