Primotrapa gen. nov., an extinct transitional genus bridging the evolutionary gap between Lythraceae and Trapoideae, from the early Miocene of North China
文献类型：期刊论文
| 作者 | Li, Ya; Cui, Yi-Ming; Gee, Carole T.; Liang, Xiao-Qing; Li, Cheng-Sen |
| 刊名 | BMC EVOLUTIONARY BIOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 20期号:1 |
| 关键词 | Water caltrop Freshwater macrophyte Extinct aquatic plant Primotrapa Trapa Hemitrapa Lythraceae Miocene Hebei Province China |
| ISSN号 | 1471-2148 |
| DOI | 10.1186/s12862-020-01697-2 |
| 文献子类 | Article |
| 英文摘要 | Background Although Trapa is a well-defined genus of distinctive freshwater plants with accumulations of extensive morphological and embryological autapomorphies, its phylogenetic relationships have long been unclear. Formerly placed in the monotypic family Trapaceae, Trapa is now recognized as sister to Sonneratia within Lythraceae s.l., although both genera lack morphological synapomorphies. Thus, a split between the two taxa must have occurred in deep evolutionary time, which raises the possibility of finding transitional forms in the fossil record. Results Here we describe a new genus and species, Primotrapa weichangensis Y. Li et C.-S. Li (Lythraceae s.l.: Trapoideae), based on three-dimensionally preserved floral cups, fruits, and seeds from the early Miocene of Weichang County, Hebei Province, China. Primotrapa is characterized by a shallow, saucer-shaped floral cup, four distally barbellate sepals, four intersepal appendages alternating with the sepals at the rim of cup, a superior to basally inferior ovary, a fusiform or ovoid, one-seeded fruit with a ribbed surface, and a long persistent peduncle. Two fossil species of Hemitrapa are proposed as new combinations of Primotrapa, namely P. alpina (T. Su et Z.-K. Zhou) Y. Li et C.-S. Li comb. nov. and P. pomelii (Boulay) Y. Li et C.-S. Li comb. nov. Our phylogenetic analysis based on fifteen flower and fruit characters supports the placement of Primotrapa, Hemitrapa and Trapa in a monophyletic clade, which comprise subfamily Trapoideae. The phylogenetic analysis places Primotrapa at the base of Trapoideae. Conclusions In view of its superior ovary, which is a plesiomorphic character of Lythraceae s.l., the newly recognized genus Primotrapa and its three species likely represent transitional forms that bridge the evolutionary gap between the basal taxa of Lythraceae s.l., i.e. Lythrum, and the highly derived taxon Trapa. |
| 学科主题 | Evolutionary Biology ; Genetics & Heredity |
| 出版地 | LONDON |
| WOS关键词 | WEICHANG ; TRAPACEAE ; POLLEN ; OLIGOCENE ; HISTORY |
| WOS研究方向 | Evolutionary Biology ; Genetics & Heredity |
| 语种 | 英语 |
| WOS记录号 | WOS:000590864100001 |
| 出版者 | BMC |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41502017, 31760057] ; Strategic Priority Research Program of Chinese Academy of SciencesChinese Academy of Sciences [XDB26000000] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of SciencesChinese Academy of Sciences [20172106] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/21517]  |
| 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.[Gee, Carole T.] Huntington Bot Gardens, 1151 Oxford Rd, San Marino, CA 92208 USA 2.[Li, Ya 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 4.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Jiangsu, Peoples R China 5.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China 6.[Gee, Carole T.] Univ Bonn, Inst Geosci, Div Paleontol, Nussallee 8, D-53115 Bonn, Germany 7.Yuxi Normal Univ, Sch Chem Biol & Environm Sci, Yuxi 653100, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ya,Cui, Yi-Ming,Gee, Carole T.,et al. Primotrapa gen. nov., an extinct transitional genus bridging the evolutionary gap between Lythraceae and Trapoideae, from the early Miocene of North China[J]. BMC EVOLUTIONARY BIOLOGY,2020,20(1). |
| APA | Li, Ya,Cui, Yi-Ming,Gee, Carole T.,Liang, Xiao-Qing,&Li, Cheng-Sen.(2020).Primotrapa gen. nov., an extinct transitional genus bridging the evolutionary gap between Lythraceae and Trapoideae, from the early Miocene of North China.BMC EVOLUTIONARY BIOLOGY,20(1). |
| MLA | Li, Ya,et al."Primotrapa gen. nov., an extinct transitional genus bridging the evolutionary gap between Lythraceae and Trapoideae, from the early Miocene of North China".BMC EVOLUTIONARY BIOLOGY 20.1(2020). |
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来源：植物研究所
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