Parallel evolution of leaf morphology in gnetophytes
文献类型：期刊论文
| 作者 | Yang, Yong; Lin, Longbiao2; Ferguson, David K. |
| 刊名 | ORGANISMS DIVERSITY & EVOLUTION
 |
| 出版日期 | 2015 |
| 卷号 | 15期号:4页码:651-662 |
| 关键词 | China Early Cretaceous Ephedra Evolution Gnetophytes Gnetum Liaoning Morphology Palaeobotany Welwitschia Yixian Formation |
| ISSN号 | 1439-6092 |
| DOI | 10.1007/s13127-015-0226-6 |
| 文献子类 | Article |
| 英文摘要 | In the present paper, an ephedroid macrofossil species from the Early Cretaceous Yixian Formation of western Liaoning of China is described as new to science: Ephedra multinervia Yang et Lin, sp. nov. This species has typical ephedroid morphology, e.g. the dichasial branching shoot system, swollen nodes, internodes having many fine longitudinal striations and opposite phyllotaxy. Ephedra multinervia has strap-shaped leaves with multiple dichotomizing veins and reduced female cones with a single pair of fertile bracts forming a cupule enclosing two inner seeds. Ephedra multinervia is similar to Ephedra archaeorhytidosperma Yang et al. and Ephedra hongtaoi Wang et Zheng in its reduced bi-ovulate female cone, but differs from the latter two species by the lengthy strap-like leaves bearing multiple parallel veins and its sessile female cones. A new evolutionary hypothesis of the gnetophytes is proposed based on a synthesis of reproductive morphology of macrofossils from the Early Cretaceous and modern representatives. A Chengia-like precursor might have given rise to the Gnetum-Welwitschia clade by diversification of leaf morphology and female reproductive organs. According to this new explanation, the Welwitschia-like strap-like leaves with multiple parallel veins in E. multinervia result from convergence. |
| 学科主题 | Evolutionary Biology ; Zoology |
| 出版地 | HEIDELBERG |
| 电子版国际标准刊号 | 1618-1077 |
| WOS关键词 | CRETACEOUS YIXIAN FORMATION ; SEED PLANT PHYLOGENY ; SP-NOV ; WELWITSCHIA-MIRABILIS ; LIAONING PROVINCE ; EPHEDROID PLANT ; GNETALES ; FOSSIL ; ORIGIN ; GNETUM |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000365753500002 |
| 出版者 | SPRINGER HEIDELBERG |
| 资助机构 | National Natural Science Foundation of China [J1310002, 31270238, 31470301] ; Fairy Lake Botanical Garden |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25867]  |
| 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.China Railway Grp Ltd, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 3.Ferguson, David K.] Univ Vienna, Dept Paleontol, A-1090 Vienna, Austria |
| 推荐引用方式 GB/T 7714 | Yang, Yong,Lin, Longbiao,Ferguson, David K.. Parallel evolution of leaf morphology in gnetophytes[J]. ORGANISMS DIVERSITY & EVOLUTION,2015,15(4):651-662. |
| APA | Yang, Yong,Lin, Longbiao,&Ferguson, David K..(2015).Parallel evolution of leaf morphology in gnetophytes.ORGANISMS DIVERSITY & EVOLUTION,15(4),651-662. |
| MLA | Yang, Yong,et al."Parallel evolution of leaf morphology in gnetophytes".ORGANISMS DIVERSITY & EVOLUTION 15.4(2015):651-662. |
入库方式： OAI收割
来源：植物研究所
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