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题名: Microcystin-RR uptake and its effects on the growth of submerged macrophyte Vallisneria natans (lour.) Hara
作者: Yin, LY ; Huang, JQ ; Li, DH ; Liu, YD
会议文集: ENVIRONMENTAL TOXICOLOGY
会议名称: 6th International Conference on Toxic Cyanobacteria
会议日期: JUN 21-27, 2004
出版日期: 2005
会议地点: Bergen, NORWAY
关键词: microcystin-RR ; submerged macrophyte ; Vallisneria natans (lour.) Hara. ; uptake ; development
通讯作者: Liu, YD, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
收录类别: SCI
部门归属: Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China; Huazhong Agr Univ, Coll Horticulture & Forestry, Wuhan 430070, Peoples R China
摘要: Microcystins are hepatotoxins produced by many species of several cyanobacterial genera. Their toxic effects on animals and some terrestrial higher plants have been well studied, but their potential effects on the development of aquatic plant seedlings are not well known, and their uptake by aquatic plants is seldom reported. In our research the seeds and seedlings of the submerged macrophyte Vallisneria natans were exposed to different concentrations of microcystin-RR, which was purified with high-performance liquid chromatography (HPLC). The results indicated that microcystin-RR could accumulate differentially in the roots and leaves of V natans seedlings. Toxin accumulation in the roots and leaves was time- and dose-dependent, with higher uptake detected in the roots. Growth and development detection revealed that V natans was relatively insensitive to microcystin-RR at concentrations ranging from 0.0001 to 0.01 mg/L. However, when the toxin concentration was more than 0.01 mg/L, both the fresh weight and the longest leaf length of seedlings were significantly reduced after a 30-day treatment. The root and leaf numbers were significantly decreased when 10 mg/L of toxin was used. These results suggest that microcystin-RR can be taken up by V natans, which subsequently will retard its development. (c) 2005 Wiley Periodicals, Inc.
语种: 英语
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内容类型: 会议论文
URI标识: http://ir.ihb.ac.cn/handle/342005/11793
Appears in Collections:中科院水生所知识产出(2009年前)_会议论文

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Recommended Citation:
Yin, LY; Huang, JQ; Li, DH; Liu, YD.Microcystin-RR uptake and its effects on the growth of submerged macrophyte Vallisneria natans (lour.) Hara.见:.ENVIRONMENTAL TOXICOLOGY,,2005,308-313
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