Physiological regulation of Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria) in response to inorganic phosphorus limitation
文献类型：期刊论文
| 作者 | Wu, Zhongxing1; Zeng, Bo1; Li, Renhui2; Song, Lirong2; Wu, ZX (reprint author), Southwest Univ, Sch Life Sci,Minist Educ, Chongqing Key Lab Plant Ecol & Resources Res Gorg, Key Lab Eco Environm Gorges Reservoir Reg 3, Chongqing 400715, Peoples R China. |
| 刊名 | HARMFUL ALGAE
 |
| 出版日期 | 2012-03-01 |
| 卷号 | 15页码:53-58 |
| 关键词 | Cylindrospermopsis Raciborskii Extracellular Phosphatase Inorganic Phosphorus (Pi) Physiological Regulation |
| ISSN号 | 1568-9883 |
| DOI | 10.1016/j.hal.2011.11.005 |
| 文献子类 | Article |
| 英文摘要 | Physiological responses to varying dissolved inorganic phosphorus (DIP) levels were examined to explore the acclimation mechanisms of Cylindrospermopsis raciborskii, a nontoxic diazotrophic cyanobacterium. The results showed that the growth rate of C. raciborskii was markedly reduced under phosphorus (P)-deficient conditions. Photosynthetic activity in terms of F-v/F-m (maximum quantum yield), ETRmax (maximum electron transport rate), alpha (photosynthetic efficiency) and I-k (saturation irradiance) was also found to be significantly lower after a 12-day incubation with a Pi concentration of less than 0.05 mg L-1. When supplied with phosphorus concentrations of more than 0.50 mg L-1, C raciborskii showed increased growth rates and reached a relatively stable value, about 0.26 d(-1). Additionally, the content of malodialdehyde (MDA), a lipid peroxidation product reflecting the destruction of lipid membrane by environmental stresses, in Cylindrospermopsis cultured with a low P concentration was 10.81-12.13 times higher than that with a high P concentration. The relative activities of catalase (CAT) and extracellular phosphatase (APA) were found to increase significantly to reduce the stress of P limitation and compensate for P deficiency. These data indicate that C. raciborskii is able to regulate its physiological metabolism in order to acclimate to low ambient DIP environments. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.; Physiological responses to varying dissolved inorganic phosphorus (DIP) levels were examined to explore the acclimation mechanisms of Cylindrospermopsis raciborskii, a nontoxic diazotrophic cyanobacterium. The results showed that the growth rate of C. raciborskii was markedly reduced under phosphorus (P)-deficient conditions. Photosynthetic activity in terms of F-v/F-m (maximum quantum yield), ETRmax (maximum electron transport rate), alpha (photosynthetic efficiency) and I-k (saturation irradiance) was also found to be significantly lower after a 12-day incubation with a Pi concentration of less than 0.05 mg L-1. When supplied with phosphorus concentrations of more than 0.50 mg L-1, C raciborskii showed increased growth rates and reached a relatively stable value, about 0.26 d(-1). Additionally, the content of malodialdehyde (MDA), a lipid peroxidation product reflecting the destruction of lipid membrane by environmental stresses, in Cylindrospermopsis cultured with a low P concentration was 10.81-12.13 times higher than that with a high P concentration. The relative activities of catalase (CAT) and extracellular phosphatase (APA) were found to increase significantly to reduce the stress of P limitation and compensate for P deficiency. These data indicate that C. raciborskii is able to regulate its physiological metabolism in order to acclimate to low ambient DIP environments. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | ALKALINE-PHOSPHATASE ACTIVITY ; SUBTROPICAL WATER RESERVOIR ; BALTIC SEA ; PHYTOPLANKTON COMMUNITY ; PHOTOSYSTEM-II ; MICROCYSTIS ; TOLERANCE ; LAKE ; QUANTIFICATION ; ANTIOXIDANTS |
| WOS研究方向 | Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000302042100007 |
| 资助机构 | National Natural Science Foundation of China[30800123, 31170372]; State Key Basic Research and Development Plan of China[2008CB418000]; China SWU[SWU110065] ; National Natural Science Foundation of China[30800123, 31170372]; State Key Basic Research and Development Plan of China[2008CB418000]; China SWU[SWU110065] ; National Natural Science Foundation of China[30800123, 31170372]; State Key Basic Research and Development Plan of China[2008CB418000]; China SWU[SWU110065] ; National Natural Science Foundation of China[30800123, 31170372]; State Key Basic Research and Development Plan of China[2008CB418000]; China SWU[SWU110065] |
| 公开日期 | 2012-09-25 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/17053]  |
| 专题 | 水生生物研究所_藻类生物学及应用研究中心_期刊论文 |
| 通讯作者 | Wu, ZX (reprint author), Southwest Univ, Sch Life Sci,Minist Educ, Chongqing Key Lab Plant Ecol & Resources Res Gorg, Key Lab Eco Environm Gorges Reservoir Reg 3, Chongqing 400715, Peoples R China. |
| 作者单位 | 1.Southwest Univ, Sch Life Sci,Minist Educ, Chongqing Key Lab Plant Ecol & Resources Res Gorg, Key Lab Eco Environm Gorges Reservoir Reg 3, Chongqing 400715, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Zhongxing,Zeng, Bo,Li, Renhui,et al. Physiological regulation of Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria) in response to inorganic phosphorus limitation[J]. HARMFUL ALGAE,2012,15:53-58. |
| APA | Wu, Zhongxing,Zeng, Bo,Li, Renhui,Song, Lirong,&Wu, ZX .(2012).Physiological regulation of Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria) in response to inorganic phosphorus limitation.HARMFUL ALGAE,15,53-58. |
| MLA | Wu, Zhongxing,et al."Physiological regulation of Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria) in response to inorganic phosphorus limitation".HARMFUL ALGAE 15(2012):53-58. |
入库方式： OAI收割
来源：水生生物研究所
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