Effects of urea on growth and photosynthetic metabolism of two aquatic plants (Cabomba caroliniana A. Gray and Elodea nuttallii (Planch.) H. St. John)
文献类型：期刊论文
| 作者 | Li, Wei2; Huang, Wenmin2; Shao, Hui1,2; Jiang, Hongsheng1,2; Chen, Yuanyuan2 |
| 刊名 | AQUATIC BOTANY
 |
| 出版日期 | 2017-05-01 |
| 卷号 | 140页码:69-77 |
| 关键词 | Urea Cabomba caroliniana Elodea nuttallii Growth Photosynthetic apparatus Chlorophyll fluorescence |
| ISSN号 | 0304-3770 |
| DOI | 10.1016/j.aquabot.2016.04.003 |
| 英文摘要 | Increasing urea import into freshwaters is known to have a negative impact on aquatic ecosystems, however, few data exist about the effects of urea on the physiology and ecology of aquatic plants. In the present study, two submersed aquatic plants, Cabomba caroliniana A. Gray and Elodea nuttallii (Planch.) H. St. John were cultured with urea-enriched solution for 16 days and the effects of urea on the two species' physiology were determined on day 6 and day 16, respectively. The growth and photosynthetic metabolism of the two species were promoted after 16 days of treatment with 1 and 5 mg urea-N L-1, as indicated by the increase of relative growth rates (RGR), chlorophyll synthesis and elevated rates of net photosynthesis (PN). However, 10 mg urea-N L-1 markedly inhibited the growth of C. caroliniana and E. nuttallii by 14 and 28%, respectively. Moreover, obvious decline of photosystem II activity and photosynthetic rate in E. nuttallii were found after 6 days of 10 mg urea-N L-1 treatment, which appeared earlier than those in C caroliniana on day 16. All the urea treatments did not cause any damage to photosystem I in the two species. In addition, malondialdehyde (MDA) significantly increased while soluble carbohydrates (SC) markedly decreased in 10 mg urea-N L-1 treated two species. Moreover, the decrease of SC in C. caroliniana was not induced to the extent of that in E. nuttallii. In conclusion, high urea concentration in water column may hamper the growth of aquatic plants. Furthermore, E. nuttallii may be more sensitive and vulnerable to urea than C. caroliniana when they inhabit the eutrophic water with high urea availability. (C) 2016 Elsevier B.V. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[31100340] ; National Natural Science Foundation of China[31370479] |
| WOS研究方向 | Plant Sciences ; Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000405044500011 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1375]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Chen, Yuanyuan |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wei,Huang, Wenmin,Shao, Hui,et al. Effects of urea on growth and photosynthetic metabolism of two aquatic plants (Cabomba caroliniana A. Gray and Elodea nuttallii (Planch.) H. St. John)[J]. AQUATIC BOTANY,2017,140:69-77. |
| APA | Li, Wei,Huang, Wenmin,Shao, Hui,Jiang, Hongsheng,&Chen, Yuanyuan.(2017).Effects of urea on growth and photosynthetic metabolism of two aquatic plants (Cabomba caroliniana A. Gray and Elodea nuttallii (Planch.) H. St. John).AQUATIC BOTANY,140,69-77. |
| MLA | Li, Wei,et al."Effects of urea on growth and photosynthetic metabolism of two aquatic plants (Cabomba caroliniana A. Gray and Elodea nuttallii (Planch.) H. St. John)".AQUATIC BOTANY 140(2017):69-77. |
入库方式： OAI收割
来源：武汉植物园
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