| 美人蕉根系对铜绿微囊藻的化感作用 |
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| 引用本文： | 潘 琦,邹国燕,宋祥甫,中井智司,付子轼.美人蕉根系对铜绿微囊藻的化感作用[J].环境科学研究,2014,27(10):1193-1198. |
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| 作者姓名： | 潘 琦 邹国燕 宋祥甫 中井智司 付子轼 |
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| 作者单位： | 1.上海市农业科学院, 上海 201403 |
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| 基金项目： | 国家自然科学基金项目(20477028)；国家水体污染控制与治理科技重大专项(2012ZX07101-009) |
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| 摘 要： | 通过在铜绿微囊藻(Microcystis aeruginosa)培养物中添加美人蕉(Canna indica)种植水的方式,研究了美人蕉种植水对铜绿微囊藻的抑制效应. 结果表明:①以蒸馏水培养3 d收集获得的美人蕉种植水对铜绿微囊藻的生长有明显的抑制作用； 在与铜绿微囊藻共培养20 d后,美人蕉种植水对铜绿微囊藻的抑制率最高可达64.4%,对照组铜绿微囊藻中ρ(Chla)是种植水的1.98倍. ②美人蕉种植水(根系分泌物)中有乳酸、己二酸、棕榈酸、乙二醇和硬脂酸等10种脂肪酸,其根系提取物中有乳酸、3-儿茶酚乳酸、亚油酸和棕榈酸等19种物质. ③美人蕉种植水和根系提取物中乳酸含量均最高,美人蕉根系提取物中化合物种类多于种植水,美人蕉种植水中绝大部分化合物在其根系提取物中均可找到. 推断美人蕉自身代谢产生的化感物质释放于水体中,可有效抑制铜绿微囊藻的正常生长.
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| 关 键 词： | 美人蕉 铜绿微囊藻 脂肪酸 化感作用 |
| 收稿时间： | 2013/11/14 0:00:00 |
| 修稿时间： | 2014/5/24 0:00:00 |
Inhibitory Effects of the Roots of Floating Bed Plants of Canna indica on Microcystis aeruginosa |
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| PAN Qi,ZOU Guo-yan,SONG Xiang-fu,NAKAI Satoshi and FU Zi-shi.Inhibitory Effects of the Roots of Floating Bed Plants of Canna indica on Microcystis aeruginosa[J].Research of Environmental Sciences,2014,27(10):1193-1198. |
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| Authors: | PAN Qi ZOU Guo-yan SONG Xiang-fu NAKAI Satoshi and FU Zi-shi |
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| Affiliation: | 1.Research Institute of Environmental Science, Shanghai Academy of Agricultural Science, Shanghai 201403, China2.Graduate School of Engineering, Institute of Engineering, Hiroshima University, Hiroshima 739-8511, Japan |
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| Abstract: | Eutrophication directly leads to the explosion of algae. The ecological function of water bodies might be damaged by algal blooms. The safety of drinking water could also be threatened by algal blooms. The ecological floating-bed is widely used to control harmful algal blooms. Canna indica is one of the most widely used plants in the technology of ecological floating-beds to treat eutrophication. The root secretions of C. indica were investigated for their inhibitory effects on the growth of Microcystis aeruginosa by adding the former to the culturing of the latter. The results showed that:1) The growth of M. aeruginosa was significantly inhibited by the root secretions of C. indica. The highest inhibitory rate (64.4%) could be reached within 20 days. The ρ(Chla) of the controls could be 1.98 times that of the experiment. 2)The results of GC-MS (gas chromatography-mass spectrometry) analyses showed that there were 10 fatty acids in the root secretions of C. indica. The contents included hexanoic acid, palmitic acid and octadecanoic acid. There were 19 compounds in the root extraction of C. indica. 3)The acids included DL-Lactic acid, 3-methoxy-4-hydroxycinamic acid, linoleic acid and palmitic acid. The fatty acids played important roles in inhibiting the growth of M. aeruginosa. |
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| Keywords: | Canna indica Microcystis aeruginosa fatty acid alleloathy |
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