Ingenious floral structure drives explosive pollination in Hydrilla verticillata (Hydrocharitaceae)
文献类型：期刊论文
| 作者 | Zhang, Q.1; Fu, W-L2,3; Wang, X-F1; Huang, L-J4 |
| 刊名 | PLANT BIOLOGY
 |
| 出版日期 | 2020-01-08 |
| 页码 | 7 |
| ISSN号 | 1435-8603 |
| 关键词 | Elastic potential energy epihydrophily explosive pollination floral structure Hydrilla stamen movement |
| DOI | 10.1111/plb.13085 |
| 英文摘要 | In explosive pollination, many structures and mechanisms have evolved to achieve high-speed stamen movement. The male flower of the submerged plant Hydrilla verticillata is reported to be able to release pollen explosively some time after leaving the mother plant time, but the mechanism of stamen movement and the related functional structure in this species are unclear. In this study, we observed the male flower structure and pollen dispersal process of H. verticillata. We analysed the stamen movements during the pollen dispersal process and conducted several controlled experiments to study the process of storage and release of elastic potential energy in explosive pollination. When the male flower of H. verticillata is bound to the united bracts, the sepals accumulate elastic potential energy through the expansion of basal extensor cells. After the male flower is liberated from the mother plant, the stamens unfold rapidly with the sepals under adhesion and transfer the elastic potential energy to the filament in seconds. Once stamens unfold to a critical angle, at which the elasticity of the filament just exceeds the adhesion between sepals and anthers, the stamens automatically rebound and release pollen in milliseconds. These results reveal that Catapult-like stamens, spoon-shaped sepals and enclosed united bracts in the spathe together constitute the functional structure in rapid stamen movement of H. verticillata. They ensure that the pollen can be released on the water surface, and thus adapt successfully to the pollen-epihydrophilous pollination. |
| 资助项目 | National Natural Science Foundation of China[31600186] |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000506152900001 |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/14685]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Wang, X-F; Huang, L-J |
| 作者单位 | 1.Wuhan Univ, Coll Life Sci, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Hubei Univ, Coll Life Sci, Wuhan 430062, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Q.,Fu, W-L,Wang, X-F,et al. Ingenious floral structure drives explosive pollination in Hydrilla verticillata (Hydrocharitaceae)[J]. PLANT BIOLOGY,2020:7. |
| APA | Zhang, Q.,Fu, W-L,Wang, X-F,&Huang, L-J.(2020).Ingenious floral structure drives explosive pollination in Hydrilla verticillata (Hydrocharitaceae).PLANT BIOLOGY,7. |
| MLA | Zhang, Q.,et al."Ingenious floral structure drives explosive pollination in Hydrilla verticillata (Hydrocharitaceae)".PLANT BIOLOGY (2020):7. |
入库方式： OAI收割
来源：武汉植物园
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