中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院地球与行星物理重点实验室
Ultrastructure and in-situ chemical characterization of intracellular granules of embryo-like fossils from the early Ediacaran Weng'an biota

文献类型：期刊论文

作者Sun, Weichen2,3,7; Yin, Zongjun2,3,6; Liu, Pengju1; Donoghue, Philip C. J.4; Li, Jinhua5; Zhu, Maoyan2,3,6
刊名PALZ
出版日期2021-12-06
页码11
ISSN号0031-0220
关键词Ediacaran Weng'an biota Megasphaera Subcellular structure Taphonomy
DOI10.1007/s12542-021-00597-0
英文摘要Embryo-like fossils from the early Ediacaran Weng'an biota provide a window of exceptional fossil preservation onto the period of life history in which molecular clocks estimate the fundamental animal lineages to have diverged. However, their diversity and biological affinities have proven controversial, because they are morphologically simple and, consequently, their interpretation lacks phylogenetic constraint. The subcellular structures preserved in these embryo-like fossils might help to understand their cytology, biology, and diversity, but the potential of these structures has not been fully realized, because detailed microscale physical and chemical investigations are lacking. Here, to remedy this deficiency, we performed a comprehensive study to characterize their micro- and ultra-structures as well as in-situ chemical components. Our results reveal three types of subcellular structure that differ in size, shape, and mineral components: (1) relatively small and spheroidal granules in embryo-like fossils with equal cell division pattern; (2) relatively large, spheroidal, or polygonal granules in embryo-like fossils with unequal and asynchronous cell division pattern; and (3) irregular multi-layered rim-bounded granules in embryo-like fossils with unequal and asynchronous cell division pattern. We propose that the three types may be rationalized to a single taphonomic pathway of preferential mineralization of the cell cytoplasm, preserving an external mould of subcellular granules. We followed the previous interpretation that the spheroidal and polygonal granules should be fossilized lipid droplets or yolk platelets. The distinction between these subcellular structures are largely the result of postmortem degradation processes such as autolysis. The widely preserved lipid droplets or yolk platelets within these Ediacaran embryo-like fossils are compatible with the interpretion of large yolky embryos with maternal nourishment and direct development.
WOS关键词GIANT SULFUR BACTERIA ; DOUSHANTUO FORMATION ; ANIMAL EMBRYOS ; EXPERIMENTAL TAPHONOMY ; ORIGIN ; PRESERVATION ; MICROFOSSILS ; LAGERSTATTE ; GUIZHOU ; NUCLEI
资助项目Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS)[XDB26000000] ; National Natural Science Foundation of China[42022010] ; National Natural Science Foundation of China[41921002] ; CAS Interdisciplinary Innovation Team[JCTD-2020-18] ; Youth Innovation Promotion Association of the CAS ; Natural Environment Research Council (NERC) grant, Biosphere Evolution, Transitions and Resilience (BETR) programme - Natural Science Foundation of China (NSFC)[NE/P013678/1]
WOS研究方向Paleontology
语种英语
出版者SPRINGER HEIDELBERG
WOS记录号WOS:000727129600001
资助机构Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Natural Environment Research Council (NERC) grant, Biosphere Evolution, Transitions and Resilience (BETR) programme - Natural Science Foundation of China (NSFC) ; Natural Environment Research Council (NERC) grant, Biosphere Evolution, Transitions and Resilience (BETR) programme - Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Natural Environment Research Council (NERC) grant, Biosphere Evolution, Transitions and Resilience (BETR) programme - Natural Science Foundation of China (NSFC) ; Natural Environment Research Council (NERC) grant, Biosphere Evolution, Transitions and Resilience (BETR) programme - Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Natural Environment Research Council (NERC) grant, Biosphere Evolution, Transitions and Resilience (BETR) programme - Natural Science Foundation of China (NSFC) ; Natural Environment Research Council (NERC) grant, Biosphere Evolution, Transitions and Resilience (BETR) programme - Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Natural Environment Research Council (NERC) grant, Biosphere Evolution, Transitions and Resilience (BETR) programme - Natural Science Foundation of China (NSFC) ; Natural Environment Research Council (NERC) grant, Biosphere Evolution, Transitions and Resilience (BETR) programme - Natural Science Foundation of China (NSFC)
源URL[http://ir.iggcas.ac.cn/handle/132A11/103879]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Yin, Zongjun
作者单位1.Chinese Acad Geol Sci, Inst Geol, Beijing 100043, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
4.Univ Bristol, Sch Earth Sci, Life Sci Bldg,Tyndall Ave, Bristol BS8 1TQ, Avon, England
5.Chinese Acad Sci, Innovat Acad Earth Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
7.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Weichen,Yin, Zongjun,Liu, Pengju,et al. Ultrastructure and in-situ chemical characterization of intracellular granules of embryo-like fossils from the early Ediacaran Weng'an biota[J]. PALZ,2021:11.
APA Sun, Weichen,Yin, Zongjun,Liu, Pengju,Donoghue, Philip C. J.,Li, Jinhua,&Zhu, Maoyan.(2021).Ultrastructure and in-situ chemical characterization of intracellular granules of embryo-like fossils from the early Ediacaran Weng'an biota.PALZ,11.
MLA Sun, Weichen,et al."Ultrastructure and in-situ chemical characterization of intracellular granules of embryo-like fossils from the early Ediacaran Weng'an biota".PALZ (2021):11.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。