IHEP OpenIR  > 多学科研究中心
Early embryogenesis of potential bilaterian animals with polar lobe formation from the Ediacaran Weng'an Biota, South China
Yin, ZJ; Zhu, MY; Tafforeau, P; Chen, JY; Liu, PJ; Li, G; Li G(黎刚)
2013
发表期刊PRECAMBRIAN RESEARCH
卷号225页码:44-57
摘要Exquisite phosphatized eggs and embryos from the Ediacaran Doushantuo Formation (Weng'an biota, ca.580Ma) of Guizhou, southwestern China have greatly expanded our knowledge of the diversity and palaeobiology of early multicellular animals, and contributed to our understanding of the origins of sponge, cnidarian and other potential eumetazoans. However, the key question of whether triploblastic bilaterian animals are present in the Weng'an biota remains controversial. In the present study, scanning electronic microscopy (SEM) and propagation phase contrast synchrotron X-ray microtomography (PPC-SR-mu CT) are used to prove the presence of bilaterian embryos in the Doushantuo phosphorite. Based on the well preserved connection neck between the polar lobe (PL) and the egg or blastomere as shown by the high-resolution internal sections conducted by PPC-SR-mu CT, three types of PL-forming embryos (calabash-shaped (1-cell stage), trefoil and L-shaped (2-cell stage)) have been confirmed in the Doushantuo phosphorite. These PL-forming embryos are distinct from the PL-forming-like embryos, multicellular algal fossils, and even diagenetic artifacts in morphology and anatomy. In addition, an early developmental sequence for these PL-forming embryos can be inferred for the first time. The results not only provide more convincing evidence for animal affinities among the Doushantuo embryos, but also indicate that polar lobes, which break the symmetrical distribution of morphogenetic determinants in cytoplasm during the early developmental stages of living bilaterian embryos, are a conserved device that occurred already during animal embryogenesis even in the Precambrian. (C) 2011 Elsevier B.V. All rights reserved.
关键词Doushantuo Ediacaran Fossils Bilaterian Embryo Polar lobe Weng'an biota
学科领域Geology
DOI10.1016/j.precamres.2011.08.011
收录类别SCI
WOS记录号WOS:000314861200004
引用统计
被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/223790
专题多学科研究中心
推荐引用方式
GB/T 7714
Yin, ZJ,Zhu, MY,Tafforeau, P,et al. Early embryogenesis of potential bilaterian animals with polar lobe formation from the Ediacaran Weng'an Biota, South China[J]. PRECAMBRIAN RESEARCH,2013,225:44-57.
APA Yin, ZJ.,Zhu, MY.,Tafforeau, P.,Chen, JY.,Liu, PJ.,...&黎刚.(2013).Early embryogenesis of potential bilaterian animals with polar lobe formation from the Ediacaran Weng'an Biota, South China.PRECAMBRIAN RESEARCH,225,44-57.
MLA Yin, ZJ,et al."Early embryogenesis of potential bilaterian animals with polar lobe formation from the Ediacaran Weng'an Biota, South China".PRECAMBRIAN RESEARCH 225(2013):44-57.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
552.pdf(5346KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Yin, ZJ]的文章
[Zhu, MY]的文章
[Tafforeau, P]的文章
百度学术
百度学术中相似的文章
[Yin, ZJ]的文章
[Zhu, MY]的文章
[Tafforeau, P]的文章
必应学术
必应学术中相似的文章
[Yin, ZJ]的文章
[Zhu, MY]的文章
[Tafforeau, P]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。