Turbulence exerts nutrients uptake and assimilation of bloom-forming Dolichospermum through modulating morphological traits: Field and chemostat culture studies
文献类型：期刊论文
| 作者 | Zhang, Shuqing1,2; Xiao, Yan2 ; Li, Zhe2; Wang, Shu1; Guo, Jinsong1; Lu, Lunhui2
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019-06-25 |
| 卷号 | 671页码:329-338 |
| ISSN号 | 0048-9697 |
| 关键词 | Cyanobacterial blooms Morphology Nutrient uptake Reservoir Turbulence |
| DOI | 10.1016/j.scitotenv.2019.03.328 |
| 通讯作者 | Xiao, Yan(yxiao@cigit.ac.cn) |
| 英文摘要 | Hydrodynamic conditions are closely related to the development and dissipation of cyanobacterial blooms. The morphological features of Dolichospermum under different hydrodynamic conditions were analysed during three blooms in Gaoyang Lake, which is part of the backwater area of the China Three Gorges Reservoir, from 2007 to 2010. The results showed that the length of filaments and the morphology of cells were different in relation to the turbulence caused by the difference in hydraulic retention times. Thus, it was hypothesized that turbulence could shape the morphology and physiology of cyanobacteria. To answer the question regarding what the morphological and physiological responses of cyanobacteria to turbulent mixing mean for these organisms, laboratory experiments in continuous cultivation under different dilution rates were conducted to analyse the effects of specific turbulence intensity on the growth, nutrient uptake and morphology of Dolichospermum flosaquae. Increasing the turbulence intensity caused synchronous increases in the ratio of the cellular length to the width, in the specific surface area of the filament and the cell and in the nutrient uptake rate; at the same time, the average filament length decreased. These indicated that the turbulence, within the range of our experimental design, could stimulate the growth of Dolichospermum by increasing its nutrient uptake. Additionally, at a high specific growth rate, the nutrient uptake rate of Dolichospermum changed more noticeably with the increasing morphological indicators, indicating that the rapidly growing Dolichospermum was more sensitive to turbulence. These findings explain the role of morphological strategies in the dominance of Dolichospermum within a certain range of turbulence intensity, especially in the early growth stage of blooms. The results also facilitate a greater understanding of the hydrodynamic effects on cyanobacteria and will be instrumental in developing flow regulation to control cyanobacterial blooms in reservoirs. (C) 2019 Elsevier B.V. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[51779240] ; National Natural Science Foundation of China[51679226] ; National Natural Science Foundation of China[51861125204] ; Youth Innovation Promotion Association Program - Chinese Academy of Sciences ; Light ofWest China Program - Chinese Academy of Sciences |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000466090500035 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/7898]  |
| 专题 | 水质生物转化研究中心 |
| 通讯作者 | Xiao, Yan |
| 作者单位 | 1.Chongqing Univ, Coll Urban Construct & Environm Engn, Campus B,83 Shabeijie St, Chongqing 400045, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Water Environm, 266 Fangzheng Ave,Shuitu Hitech Ind Pk, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Shuqing,Xiao, Yan,Li, Zhe,et al. Turbulence exerts nutrients uptake and assimilation of bloom-forming Dolichospermum through modulating morphological traits: Field and chemostat culture studies[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,671:329-338. |
| APA | Zhang, Shuqing,Xiao, Yan,Li, Zhe,Wang, Shu,Guo, Jinsong,&Lu, Lunhui.(2019).Turbulence exerts nutrients uptake and assimilation of bloom-forming Dolichospermum through modulating morphological traits: Field and chemostat culture studies.SCIENCE OF THE TOTAL ENVIRONMENT,671,329-338. |
| MLA | Zhang, Shuqing,et al."Turbulence exerts nutrients uptake and assimilation of bloom-forming Dolichospermum through modulating morphological traits: Field and chemostat culture studies".SCIENCE OF THE TOTAL ENVIRONMENT 671(2019):329-338. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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