Macrofossil evidence unveiling evolution of male cones in Ephedraceae (Gnetidae)
文献类型：期刊论文
| 作者 | Yang, Yong; Lin, Longbiao2; Ferguson, David K.; Wang, Yingwei1 |
| 刊名 | BMC EVOLUTIONARY BIOLOGY
 |
| 出版日期 | 2018 |
| 卷号 | 18 |
| 关键词 | Early cretaceous Ephedra Evolution Gnetophytes Jehol biota Male cone Yixian formation |
| ISSN号 | 1471-2148 |
| DOI | 10.1186/s12862-018-1243-9 |
| 文献子类 | Article |
| 英文摘要 | Background: Male cones of modern Ephedraceae are compound and compact. No fossil evidence has so far been found to support an origin of the compact compound male cone from a hypothetical loosely-arranged shoot system. Results: Here we describe a new macrofossil taxon, Eamesia chinensis Yang, Lin, Ferguson et Wang, gen. et sp. nov., from the Early Cretaceous of western Liaoning, northeastern China. It was an ephedroid shrub bearing male spikes terminal to twigs, but differs from modern Ephedraceae by its loosely-arranged male cones, the axillary male shoot consisting of an elongated synangiophore on which leaf-like foliar organs were inserted, and four sessile synangia terminal to the apex. Conclusions: The morphology of this fossil suggests that the modern compact male cone of Ephedra was indeed derived from a once loosely-arranged shoot system, and the male reproductive unit originated from a once elongated axillary male shoot This new fossil species thus provides a transitional link from the hypothetical ancestral shoot system to the modern compact morphology. Changes of habitat from closed humid forests to open dry deserts and shifts of the pollination syndrome may have acted as the driving forces behind this morphological evolution. |
| 学科主题 | Evolutionary Biology ; Genetics & Heredity |
| 出版地 | LONDON |
| WOS关键词 | CRETACEOUS YIXIAN FORMATION ; NORTHEASTERN CHINA ; NORTH-AMERICA ; LIAONING PROVINCE ; SP-NOV ; GNETALES ; FOSSIL ; DIVERSITY ; SEEDS ; PHYLOGENY |
| 语种 | 英语 |
| WOS记录号 | WOS:000443107300001 |
| 出版者 | BMC |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31770211, 31270238, 31470301] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/20343]  |
| 专题 | 植物研究所_系统与进化植物学研究中心_系统与进化植物学研究中心_学位论文 |
| 作者单位 | 1.Ferguson, David K.] Univ Vienna, Dept Paleontol, A-1090 Vienna, Austria 2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, 20 Nanxincun, Beijing 100093, Peoples R China 3.China Railway Grp Ltd, 69 Fuxing Rd, Beijing 100039, Peoples R China 4.Chinese Acad Sci, Beijing Bot Garden, 20 Nanxincun, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Yong,Lin, Longbiao,Ferguson, David K.,et al. Macrofossil evidence unveiling evolution of male cones in Ephedraceae (Gnetidae)[J]. BMC EVOLUTIONARY BIOLOGY,2018,18. |
| APA | Yang, Yong,Lin, Longbiao,Ferguson, David K.,&Wang, Yingwei.(2018).Macrofossil evidence unveiling evolution of male cones in Ephedraceae (Gnetidae).BMC EVOLUTIONARY BIOLOGY,18. |
| MLA | Yang, Yong,et al."Macrofossil evidence unveiling evolution of male cones in Ephedraceae (Gnetidae)".BMC EVOLUTIONARY BIOLOGY 18(2018). |
入库方式： OAI收割
来源：植物研究所
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