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| Origin and evolution of the unusual leaf epidermis of Caryodaphnopsis (Lauraceae) | |
| Zeng, Gang1; Liu, Bing1; van der Werff, Henk2; Ferguson, David K.; Yang, Yong | |
| 2014 | |
| 发表期刊 | PERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS
 |
| ISSN | 1433-8319 |
| 卷号 | 16期号:6页码:296-309 |
| 摘要 | We studied leaf epidermal anatomy of Caryodaphnopsis Airy Shaw, a genus disjunct between tropical Asia and tropical America, using light microscope and scanning electron microscope. We sampled 10 species of Caryodaphnopsis and 52 species of other Lauraceous genera. Our observations suggest that this genus possesses a unique lower leaf epidermis. Compared with other leaves of Lauraceae, this genus has an additional layer covering the lower leaf epidermis and the stomatal apparatus. The additional layer is either closed or poriferous/reticulate. The outer periclinal walls of the lower leaf epidermis protrude outside forming hollow domes or columns, and the distal endings of these domes or columns are expanded and fused, which forms the additional covering layer. Three different types are recognized in the genus: (1) the middle portion of the protuberances is not contracted and the distal endings are free or adnate to each other, with only limited space between the two layers; (2) the middle portion is slightly contracted in the outer part, the distal endings are fused, with more space between the two layers; (3) the middle portion is conspicuously contracted and elongated into columns, the distal endings are fused and it is roomy between the two layers. The structure of the leaf lower epidermis is reconstructed and illustrated for the first time. This unusual leaf lower epidermis of Caryodaphnopsis is derived in Lauraceae and is an autapomorphic character. Outward protrusions of the outer periclinal walls forming papillate protuberances surrounding the stomatal apparatus are also found in a few other genera including Neocinnamomum, a genus closely related to Caryodaphnopsis, but the distal endings of these protrusions are not expanded and connected. We hypothesize that the periclinal wall of the lower leaf epidermis has been gradually modified in Lauraceae, from a smooth pattern in most genera, to papillate pattern (e.g. Neocinnamomum), and to the double layered lower leaf epidermis in Caryodaphnopsis. The origin and evolution of this unique lower epidermis might have been related to the climatic cooling and aridification since the late Eocene. (C) 2014 Geobotanisches Institut ETH, Stiftung Ruebel. Published by Elsevier GmbH. All rights reserved. |
| 关键词 | Anatomy Light microscope (LM) Scanning electron microscope (SEM) Systematics Lauraceae Caryodaphnopsis |
| 学科领域 | Plant Sciences ; Ecology |
| DOI | 10.1016/j.ppees.2014.07.003 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | AIRY-SHAW LAURACEAE ; EARLY LAND PLANTS ; AMAZONIAN FLOODPLAINS ; CUTICULAR CHARACTERS ; EPICUTICULAR WAXES ; BASAL ANGIOSPERMS ; STOMATAL COMPLEX ; CLASSIFICATION ; PHYLOGENY ; GENUS |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:000346232900003 |
| 出版者 | ELSEVIER GMBH, URBAN & FISCHER VERLAG |
| 文献子类 | Article |
| 出版地 | JENA |
| 资助机构 | National Natural Science Foundation of China [31270238, 30970177] ; Ministry of Science and Technology of the People's Republic of China |
| 作者邮箱 | ephedra@ibcas.ac.cn |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/27165 |
| 专题 | 系统与进化植物学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 200093, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Missouri Bot Garden, St Louis, MO 63166 USA 4.Ferguson, David K.] Univ Vienna, Dept Paleontol, A-1090 Vienna, Austria |
| 推荐引用方式 GB/T 7714 | Zeng, Gang,Liu, Bing,van der Werff, Henk,et al. Origin and evolution of the unusual leaf epidermis of Caryodaphnopsis (Lauraceae)[J]. PERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS,2014,16(6):296-309. |
| APA | Zeng, Gang,Liu, Bing,van der Werff, Henk,Ferguson, David K.,&Yang, Yong.(2014).Origin and evolution of the unusual leaf epidermis of Caryodaphnopsis (Lauraceae).PERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS,16(6),296-309. |
| MLA | Zeng, Gang,et al."Origin and evolution of the unusual leaf epidermis of Caryodaphnopsis (Lauraceae)".PERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS 16.6(2014):296-309. |
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