Report Leanchoiliidae reveals the ancestral organization of the stem euarthropod brain | |
Lan, Tian1,2; Zhao, Yuanlong1; Zhao, Fangchen(赵方臣)3,4; He, You7; Martinez, Pedro5,6; Strausfeld, Nicholas J.8 | |
刊名 | CURRENT BIOLOGY
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2021-10-11 | |
卷号 | 31期号:19页码:4397-+ |
ISSN号 | 0960-9822 |
DOI | 10.1016/j.cub.2021.07.048 |
英文摘要 | Fossils provide insights into how organs may have diversified over geological time.(1) However, diversification already accomplished early in evolution can obscure ancestral events leading to it. For example, already by the mid-Cambrian period, euarthropods had condensed brains typifying modern mandibulate lineages.(2) However, the demonstration that extant euarthropods and chordates share orthologous developmental control genes defining the segmental fore-, mid-, and hindbrain suggests that those character states were present even before the onset of the Cambrian.(3) Fossilized nervous systems of stem Euarthropoda might, therefore, be expected to reveal ancestral segmental organization, from which divergent arrangements emerged. Here, we demonstrate unsurpassed preservation of cerebral tissue in Kaili leanchoiliids revealing near -identical arrangements of bilaterally symmetric ganglia identified as the proto-, deuto-, and tritocerebra disposed behind an asegmental frontal domain, the prosocerebrum, from which paired nerves extend to labral ganglia flanking the stomodeum. This organization corresponds to labral connections hallmarking extant euarthropod clades(4) and to predicted transformations of presegmental ganglia serving raptorial preocular appendages of Radiodonta.(5) Trace nervous system in the gilled lobopodian Kerygmachela kierkegaardi(6) suggests an even deeper prosocerebral ancestry. An asegmental prosocerebrum resolves its location relative to the midline asegmental sclerite of the radiodontan head, which persists in stem Euarthropoda.(7) Here, data from two Kaili Leanchoilia, with additional reference to Alalcomenaeus,(8,9) demonstrate that Cambrian stem Euarthropoda confirm genomic and developmental studies(10-15) claiming that the most frontal domain of the euarthropod brain is a unique evolutionary module distinct from, and ancestral to, the fore-, mid-, and hindbrain. |
资助项目 | Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41902003] ; Ministerio Ciencia e Innovacion[PGC2018-094173-B-I00] ; National Science Foundation (USA)[1754798] |
WOS关键词 | CAMBRIAN BURGESS SHALE ; EMBRYONIC-DEVELOPMENT ; NERVOUS-SYSTEM ; COMMON PLAN ; EYES ; EVOLUTION ; INTERNEURONS ; ARTHROPODA ; MORPHOLOGY ; DROSOPHILA |
WOS研究方向 | Biochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics ; Cell Biology |
语种 | 英语 |
出版者 | CELL PRESS |
WOS记录号 | WOS:000718943500009 |
资助机构 | Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Ministerio Ciencia e Innovacion ; National Science Foundation (USA) |
内容类型 | 期刊论文 |
源URL | [http://ir.nigpas.ac.cn/handle/332004/40192] ![]() |
专题 | 中国科学院南京地质古生物研究所 |
通讯作者 | Lan, Tian; Strausfeld, Nicholas J. |
作者单位 | 1.Guizhou Univ, Guizhou Res Ctr Palaeobiol, Guiyang, Guizhou, Peoples R China 2.Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang 500025, Guizhou, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Life & Palaeoenvironm, Nanjing, Peoples R China 5.Univ Barcelona, Dept Genet Microbiol & Estadist, Barcelona, Spain 6.Inst Catala Recerca & Estudis Avancats ICREA, Passeig Lluis Co, Barcelona 08010, Spain 7.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai, Peoples R China 8.Univ Arizona, Dept Neurosci, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Lan, Tian,Zhao, Yuanlong,Zhao, Fangchen,et al. Report Leanchoiliidae reveals the ancestral organization of the stem euarthropod brain[J]. CURRENT BIOLOGY,2021,31(19):4397-+. |
APA | Lan, Tian,Zhao, Yuanlong,Zhao, Fangchen,He, You,Martinez, Pedro,&Strausfeld, Nicholas J..(2021).Report Leanchoiliidae reveals the ancestral organization of the stem euarthropod brain.CURRENT BIOLOGY,31(19),4397-+. |
MLA | Lan, Tian,et al."Report Leanchoiliidae reveals the ancestral organization of the stem euarthropod brain".CURRENT BIOLOGY 31.19(2021):4397-+. |
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