The relationship between light intensity and nutrient uptake kinetics in six freshwater diatoms
文献类型：期刊论文
| 作者 | Shi, Pengling1,2; Shen, Hong2; Wang, Wenjing2; Chen, Wenjie1; Xie, Ping2 |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 34页码:28-36 |
| 关键词 | Diatom Light intensity Michaelis-Menten equation Phosphorus Silicon Uptake kinetics |
| ISSN号 | 1001-0742 |
| 英文摘要 | In order to find effective measures to control diatom blooms, a better understanding of the physiological characteristics of nutrient uptake in diatoms is needed. A study of P and Si-uptake kinetics for diatom species from two light regimes was conducted at low (LL), moderate (ML) and high light intensities (HL) (2, 25 and 80 mu mol photons/(m(2).sec)), respectively. The results showed that P uptake of diatoms was heavily influenced by historic light regimes. P affinity changed with growth and photosynthetic activity. The lowest half saturation constant for P uptake (K-m(P)) was under HL for high-light adapted diatoms while the lowest half-saturation constant for low-light adapted diatoms was observed under LL. The Si half-saturation constant (K-m(Si)) increased with increasing light intensities for pennate diatoms but decreased for centric diatoms. Diatom volumes were correlated with the maximum Si uptake rates (V-m(Si)) at HL and K-m(Si) at ML and HL for six diatom species. Our results imply that when we assess the development of diatom blooms we should consider light intensity and cell volume in addition to ambient Si or P concentration. The relationship between light intensity and P-uptake suggests that we can find suitable methods to control diatom blooms on the basis of reducing phytoplankton activity of P-uptake and photosynthesis simultaneously. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | PHOSPHATE-UPTAKE KINETICS ; SILICIC-ACID UPTAKE ; SKELETONEMA-COSTATUM ; MARINE DIATOMS ; AMMONIUM LIMITATION ; TRANSIENT-RESPONSE ; LIMITING NUTRIENT ; SINGLE ADDITION ; CELL-CYCLE ; PHYTOPLANKTON |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000362980400004 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/27277]  |
| 专题 | 水生生物研究所_淡水生态学研究中心_期刊论文 |
| 作者单位 | 1.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Pengling,Shen, Hong,Wang, Wenjing,et al. The relationship between light intensity and nutrient uptake kinetics in six freshwater diatoms[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2015,34:28-36. |
| APA | Shi, Pengling,Shen, Hong,Wang, Wenjing,Chen, Wenjie,&Xie, Ping.(2015).The relationship between light intensity and nutrient uptake kinetics in six freshwater diatoms.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,34,28-36. |
| MLA | Shi, Pengling,et al."The relationship between light intensity and nutrient uptake kinetics in six freshwater diatoms".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 34(2015):28-36. |
入库方式： OAI收割
来源：水生生物研究所
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