KMS Nanjing Institute of Geology and Palaeonotology,CAS
Nitrogen-Fixing Heterocystous Cyanobacteria in the Tonian Period | |
Pang, Ke (庞科)1,2; Tang, Qing2; Chen, Lei3; Wan, Bin (万斌)1![]() ![]() | |
2018-02-19 | |
发表期刊 | CURRENT BIOLOGY
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ISSN | 0960-9822 |
卷号 | 28期号:4页码:616-+ |
摘要 | Cyanobacteria were the ultimate ancestor of all plastids and, for much of Earth's history, the only source of biogenic oxygen and a major source of fixed carbon and nitrogen. One cyanobacterial clade, subsections IV+V, is characterized by multicellularity and cell differentiation, with many members bearing specialized nitrogen-fixing (or diazotrophic) heterocysts and encysting akinetes [1-3]. Molecular clock estimates of the divergence time of this clade are highly variable, ranging from similar to 2,000 Ma (mega-annum) [4-9] to similar to 500 Ma [10]. The older estimates are invariably calibrated by putative akinete fossils from Paleoproterozoic-Mesoproterozoic rocks around 2,100-1,400 Ma [3, 11, 12]. However, the interpretation of these fossils as akinetes has been questioned [13], and the next oldest akinete and heterocyst fossils are similar to 410 Ma [14]. Thus, the scarcity of reliable heterocystous cyanobacterial fossils significantly hampers our understanding of the evolution of complex multicellularity among cyanobacteria, their role in regulating geochemical cycles in the geological past, and our ability to calibrate cyanobacterial molecular clocks. Here, we report Tonian (similar to 1,000-720 Ma) filamentous cyanobacteria that are characterized by large cells, binary fission (for filament elongation), hormogonia (for asexual reproduction and dispersal), probable akinetes (for survival in adverse conditions), and by implication, diazotrophic heterocysts. The new fossils provide a minimum age calibration on the divergence of subsections IV+V and place a firm constraint on the evolution of akinetes and heterocysts. |
DOI | 10.1016/j.cub.2018.01.008 |
语种 | 英语 |
关键词[WOS] | Blue-green-algae ; Great Oxidation Event ; North China ; Marine Cyanobacteria ; Multicellularity ; Fossils ; Diversification ; Microfossils ; Populations ; Successions |
资助项目 | Chinese Academy of Sciences[QYZDJ-SSW-DQC009] ; Chinese Academy of Sciences[XDB18000000] ; National Natural Science Foundation of China[41602007] ; National Natural Science Foundation of China[41502019] ; Chinese Ministry of Science and Technology[2013CB835000] ; Jiangsu Province Science Foundation of China[BK20161090] ; China Scholarship Council[201604910155] ; State Key Laboratory of Palaeobiology and Stratigraphy[20162109] ; National Science Foundation[EAR-1528553] ; NASA Exobiology and Evolutionary Biology Program[NNX15AL27G] ; SDUST Research Fund[2015YQJH102] ; SDUST Research Fund[2015RCJJ009] |
WOS研究方向 | Biochemistry & Molecular Biology ; Cell Biology |
WOS类目 | Biochemistry & Molecular Biology ; Cell Biology |
WOS记录号 | WOS:000425377900028 |
项目资助者 | Chinese Academy of Sciences ; National Natural Science Foundation of China ; Chinese Ministry of Science and Technology ; Jiangsu Province Science Foundation of China ; China Scholarship Council ; State Key Laboratory of Palaeobiology and Stratigraphy ; National Science Foundation ; NASA Exobiology and Evolutionary Biology Program ; SDUST Research Fund |
出版者 | CELL PRESS |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/18842 |
专题 | 中国科学院南京地质古生物研究所 其他 |
通讯作者 | Yuan, Xunlai (袁训来); Xiao, Shuhai |
作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China 2.Virginia Tech, Dept Geosci, Blacksburg, VA 24061 USA 3.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China 4.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 5.Nanjing Univ, Ctr Res & Educ Biol Evolut & Environm, Nanjing 210023, Jiangsu, 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 | Pang, Ke ,Tang, Qing,Chen, Lei,et al. Nitrogen-Fixing Heterocystous Cyanobacteria in the Tonian Period[J]. CURRENT BIOLOGY,2018,28(4):616-+. |
APA | Pang, Ke .,Tang, Qing.,Chen, Lei.,Wan, Bin .,Niu, Changtai.,...&Xiao, Shuhai.(2018).Nitrogen-Fixing Heterocystous Cyanobacteria in the Tonian Period.CURRENT BIOLOGY,28(4),616-+. |
MLA | Pang, Ke ,et al."Nitrogen-Fixing Heterocystous Cyanobacteria in the Tonian Period".CURRENT BIOLOGY 28.4(2018):616-+. |
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