Developmental biology of Spiralicellula and the Ediacaran origin of crown metazoans
文献类型：期刊论文
| 作者 | Sun, Weichen4; Yin, Zongjun3,4 ; Liu, Pengju2; Zhu, Maoyan3,4; Donoghue, Philip1
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| 刊名 | PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
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| 出版日期 | 2024-05-29 |
| 卷号 | 291期号:2023页码:10 |
| 关键词 | ediacaran doushantuo formation weng'an biota origin of crown metazoans |
| ISSN号 | 0962-8452 |
| DOI | 10.1098/rspb.2024.0101 |
| 通讯作者 | Donoghue, Philip(phil.donoghue@bristol.ac.uk) |
| 英文摘要 | The early Ediacaran Weng'an biota (Doushantuo Formation, South China) provides a rare window onto the period of Earth history in which molecular timescales have inferred the initial phase of crown-metazoan diversification. Interpretation of the embryo-like fossils that dominate the biota remains contentious because they are morphologically simple and so difficult to constrain phylogenetically. Spiralicellula from the Weng'an biota is distinguished by spiral internal bodies, allied through development to Megasphaera or Helicoforamina and interpreted variously as metazoan embryos, encysting protists, or chlorophycean green algae. Here we show, using X-ray microtomography, that Spiralicellula has a single-layered outer envelope and no more than 32 internal cells, often preserving a nucleus and yolk granules. There is no correlation between the extent of spiral development and the number of component cells; rather, the spiral developed with each palintomic stage, associated with cell disaggregation and reorientation. Evidence for envelope thinning and cell loss was observed in all developmental stages, reflecting non-deterministic shedding of gametes or amoebae. The developmental biology of Spiralicellula is similar to Megasphaera and Helicoforamina, which otherwise exhibit more rounds of palintomy. We reject a crown-metazoan affinity for Spiralicellula and all other components of the Weng'an biota, diminishing the probability of crown-metazoan diversification before the early Ediacaran. |
| WOS关键词 | CYTOPLASMIC BRIDGE SYSTEM ; EMBRYO-LIKE FOSSILS ; DOUSHANTUO FORMATION ; ANIMAL EMBRYOS ; WENGAN BIOTA ; MICROFOSSILS ; ACRITARCHS ; LAGERSTATTE ; MEGASPHAERA ; TAPHONOMY |
| 资助项目 | National Key Research and Development Program of China[2022YFF0800100] ; National Natural Science Foundation of China[42302015] ; National Natural Science Foundation of China[41921002] ; National Natural Science Foundation of China[42022010] ; National Natural Science Foundation of China[U2244202] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Environment Research Council (NERC)[NE/P013678/1] ; Biosphere Evolution, Transitions and Resilience (BETR) programme ; Natural Science Foundation of China (NSFC) ; Leverhulme Trust Research Fellowship[RF-2022-167] |
| WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:001239724600008 |
| 出版者 | ROYAL SOC |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Environment Research Council (NERC) ; Biosphere Evolution, Transitions and Resilience (BETR) programme ; Natural Science Foundation of China (NSFC) ; Leverhulme Trust Research Fellowship |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/43848]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Donoghue, Philip |
| 作者单位 | 1.Univ Bristol, Sch Earth Sci, Bristol Palaeobiol Grp, Life Sci Bldg, Tyndall Ave, Bristol BS8 1TQ, England 2.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 3.Univ Chinese Acad Sci, Nanjing Coll, Nanjing 211135, Peoples R China 4.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Weichen,Yin, Zongjun,Liu, Pengju,et al. Developmental biology of Spiralicellula and the Ediacaran origin of crown metazoans[J]. PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2024,291(2023):10. |
| APA | Sun, Weichen,Yin, Zongjun,Liu, Pengju,Zhu, Maoyan,&Donoghue, Philip.(2024).Developmental biology of Spiralicellula and the Ediacaran origin of crown metazoans.PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,291(2023),10. |
| MLA | Sun, Weichen,et al."Developmental biology of Spiralicellula and the Ediacaran origin of crown metazoans".PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 291.2023(2024):10. |
入库方式： OAI收割
来源：南京地质古生物研究所
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