Germ-soma differentiation and reproduction in a new species of early Cambrian acritarch
文献类型：期刊论文
| 作者 | Liu, Wei2,3,4; Yin, Zongjun1,2 ; Pan, Bing2; Shen, Bing3,4; Dong, Lin3,4; Li, Guoxiang2
|
| 刊名 | PALAEONTOLOGY
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 66期号:6页码:13 |
| ISSN号 | 0031-0239 |
| 关键词 | Concavaesphaera ornata germ-soma differentiation multicellularity Cambrian acritarch Kuanchuanpu biota |
| DOI | 10.1111/pala.12687 |
| 通讯作者 | Yin, Zongjun(zjyin@nigpas.ac.cn) |
| 英文摘要 | As a significant evolutionary innovation, multicellularity has independently evolved multiple times throughout the evolutionary history of eukaryotes, making a substantial contribution to their diversity. In retracing the multicellularity of eukaryotes, deep-time fossil records play an irreplaceable role. In this paper, we report a new acritarch Concavaesphaera ornata gen. et sp. nov. from the early Cambrian Kuanchuanpu biota (535 Ma). These fossils are generally spherical, with diameters ranging from 450 to 950 mu m, and feature an envelope with complex ornament. Inside, there are two groups of cells varying in size. Larger cells are relatively fewer in number and each resides within a sac-like cavity distributed along the inner wall of the envelope. Statistical data show a positive correlation between the diameter and cavity volume during the development of large cells. Small cells are numerous, have a diameter of about 15 mu m, and fill the entire interior of the specimens. We interpret the large cells as reproductive cells and the small cells as somatic cells. These observations show that Concavaesphaera evolved multicellular complexity equivalent to that of modern Volvox, with germ-soma differentiation and separation. Available evidence suggests that the similarities between Concavaesphaera and Volvox are more likely to be the result of convergent evolution. Therefore, Concavaesphaera may represent an extinct multicellular eukaryote which evolved during the Cambrian explosion and probably documented an independent innovation of multicellularity in eukaryotic evolutionary history. This implies that multicellularity evolved many more times in eukaryotes than previously estimated. |
| WOS关键词 | DOUSHANTUO FORMATION ; EARLY EVOLUTION ; WENGAN BIOTA ; ORIGIN ; RADIATION ; SHAANXI ; EMBRYOS ; VOLVOX ; TREE |
| 资助项目 | National Key Research and Development Program of China ; National Natural Science Foundation of China[41921002] ; National Natural Science Foundation of China[42330209] ; National Natural Science Foundation of China[42022010] ; CAS Interdisciplinary Innovation Team[JCTD-2020-18] ; Youth Innovation Promotion Association of the CAS[Y2021083] ; [2022YFF0800100] |
| WOS研究方向 | Paleontology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:001135276800001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association of the CAS |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/42876]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Yin, Zongjun |
| 作者单位 | 1.Univ Chinese Acad Sci, Nanjing Coll, Nanjing 211135, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 3.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China 4.Peking Univ, MOE, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Wei,Yin, Zongjun,Pan, Bing,et al. Germ-soma differentiation and reproduction in a new species of early Cambrian acritarch[J]. PALAEONTOLOGY,2023,66(6):13. |
| APA | Liu, Wei,Yin, Zongjun,Pan, Bing,Shen, Bing,Dong, Lin,&Li, Guoxiang.(2023).Germ-soma differentiation and reproduction in a new species of early Cambrian acritarch.PALAEONTOLOGY,66(6),13. |
| MLA | Liu, Wei,et al."Germ-soma differentiation and reproduction in a new species of early Cambrian acritarch".PALAEONTOLOGY 66.6(2023):13. |
入库方式： OAI收割
来源：南京地质古生物研究所
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