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学科主题: Pharmacology & Pharmacy; Toxicology
题名: Effects of microcystins on the growth and the activity of superoxide dismutase and peroxidase of rape (Brassica napus L.) and rice (Oryza sativa L.)
作者: Chen, JZ; Song, LR; Dai, E; Gan, NQ; Liu, ZL
通讯作者: Liu, ZL, Nanjing Univ, Sch Life Sci, Dept Biol, Nanjing 210093, Peoples R China
关键词: microcystins ; Brassica napus L ; Oryza sativa L ; seed germination ; plant growth ; superoxide dismutase ; peroxidase ; enzyme-linked immunosorbent assay
刊名: TOXICON
发表日期: 2004-03-15
DOI: 10.1016/j.toxicon.2004.01.011
卷: 43, 期:4, 页:393-400
收录类别: SCI
文章类型: Article
部门归属: Nanjing Univ, Sch Life Sci, Dept Biol, Nanjing 210093, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan 420073, Peoples R China; Jiangsu Acad Agr Sci, Multi Analyt Ctr, Nanjing 210014, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Pharmacology & Pharmacy ; Toxicology
研究领域[WOS]: Pharmacology & Pharmacy ; Toxicology
摘要: Microcystins are naturally occurring hepatotoxic cyclic heptapeptides produced by some toxic freshwater cyanobacterial species. In this study, crude extract of toxic cyanobacterial blooms from Dianchi Lake in southwestern China was used to determine the effects of microcystins on rape (Brassica napus L.) and rice (Oryza sativa L.). Experiments were carried out on a range of doses of the extract (equivalent to 0, 0.024, 0.12, 0.6 and 3 mug MC-LR/ml). Investigations showed that exposure to microcystins inhibited the growth and development of both rice and rape seedlings, however, microcystins had more powerful inhibition effect on rape than rice in germination percentage of seeds and seedling height. Microcystins significantly inhibited the elongation of primary roots of rape and rice seedlings. Determination of the activities of peroxidase and superoxide dismutase demonstrated that microcystin stress was manifested as an oxidative stress. Using ELISA, microcystins were examined from the extract of exposed rape and rice seedlings, indicating that consumption of edible plants exposed to microcystins via irrigation route may have health risks. Significantly different levels of recovered microcystins between exposed rice and rape seedlings Suggested that there might be different tolerant mechanisms toward microcystins. (C) 2004 Elsevier Ltd. All rights reserved.
英文摘要: Microcystins are naturally occurring hepatotoxic cyclic heptapeptides produced by some toxic freshwater cyanobacterial species. In this study, crude extract of toxic cyanobacterial blooms from Dianchi Lake in southwestern China was used to determine the effects of microcystins on rape (Brassica napus L.) and rice (Oryza sativa L.). Experiments were carried out on a range of doses of the extract (equivalent to 0, 0.024, 0.12, 0.6 and 3 mug MC-LR/ml). Investigations showed that exposure to microcystins inhibited the growth and development of both rice and rape seedlings, however, microcystins had more powerful inhibition effect on rape than rice in germination percentage of seeds and seedling height. Microcystins significantly inhibited the elongation of primary roots of rape and rice seedlings. Determination of the activities of peroxidase and superoxide dismutase demonstrated that microcystin stress was manifested as an oxidative stress. Using ELISA, microcystins were examined from the extract of exposed rape and rice seedlings, indicating that consumption of edible plants exposed to microcystins via irrigation route may have health risks. Significantly different levels of recovered microcystins between exposed rice and rape seedlings Suggested that there might be different tolerant mechanisms toward microcystins. (C) 2004 Elsevier Ltd. All rights reserved.
关键词[WOS]: PROTEIN PHOSPHATASE-ACTIVITY ; INDUCIBLE GENE-EXPRESSION ; INDUCED DNA-DAMAGE ; CYANOBACTERIAL TOXINS ; OXIDATIVE STRESS ; IN-VIVO ; LR ; WATER ; AERUGINOSA ; EXPOSURE
语种: 英语
WOS记录号: WOS:000221021400005
ISSN号: 0041-0101
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9504
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Nanjing Univ, Sch Life Sci, Dept Biol, Nanjing 210093, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 420073, Peoples R China
3.Jiangsu Acad Agr Sci, Multi Analyt Ctr, Nanjing 210014, Peoples R China

Recommended Citation:
.Effects of microcystins on the growth and the activity of superoxide dismutase and peroxidase of rape (Brassica napus L.) and rice (Oryza sativa L.),TOXICON,2004,43(4):393-400
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