Germ-soma differentiation and reproduction in a new species of early Cambrian acritarch

doi:10.1111/pala.12687

NIGPAS OpenIR

	Germ-soma differentiation and reproduction in a new species of early Cambrian acritarch
通讯作者	Yin, Zongjun(zjyin@nigpas.ac.cn)
	Liu, Wei 1,2,3; Yin, Zongjun3,4 ; Pan, Bing 3; Shen, Bing 1,2; Dong, Lin 1,2; Li, Guoxiang3
	2023-11-01
发表期刊	PALAEONTOLOGY
ISSN	0031-0239
卷号	66 期号:6 页码:13
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.
关键词	Concavaesphaera ornata germ-soma differentiation multicellularity Cambrian acritarch Kuanchuanpu biota
DOI	10.1111/pala.12687
收录类别	SCI
语种	英语
关键词[WOS]	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
WOS类目	Paleontology
WOS记录号	WOS:001135276800001
项目资助者	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
出版者	WILEY
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/42877
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.Peking Univ, MOE, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 2.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 4.Univ Chinese Acad Sci, Nanjing Coll, Nanjing 211135, Peoples R China
第一作者单位	中国科学院南京地质古生物研究所
通讯作者单位	中国科学院南京地质古生物研究所
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.