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Study on the mechanism of allelopathic influence on cyanobacteria and chlorophytes by submerged macrophyte (Myriophyllum spicatum) and its secretion
文献类型：期刊论文
| 作者 | Zhu, Junying1,2; Liu, Biyun1; Wang, Jing1,2; Gao, Yunni1,2; Wu, Zhenbin1 |
| 刊名 | AQUATIC TOXICOLOGY
 |
| 出版日期 | 2010-06-10 |
| 卷号 | 98期号:2页码:196-203 |
| 关键词 | Allelopathic polyphenols Phytoplankton Chlorophyll a fluorescence Combined effects Electron transport activity |
| ISSN号 | 0166-445X |
| 通讯作者 | Wu, ZB, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China |
| 中文摘要 | For revealing the mechanism of allelopathic influence on phytoplankton by aquatic macrophytes, the growth and photosynthetic activities of cyanobacteria Microcystis aeruginosa and the chlorophyte Selenastrum capricornutum were investigated when they coexisted with submerged macrophyte Myriophyllum spicatum and were exposed to allelopathic polyphenols: pyrogallic acid (PA), gallic acid (GA), ellagic acid (EA) and (+)-catechin (CA). According to the results of coexistence assays, the non-photochemical quenching (NPQ) and effective quantum efficiency (YII) of M. aeruginosa were affected earlier and more rapidly than the cell density. However, the influence of M. spicatum on S. capricornutum was not found. When the Toxicity Index (TI) was applied to evaluate the combined effects of binary and multiple mixtures of polyphenols, it was found that the four tested polyphenols with the proportion identified in the M. spicatum-cultured solution were observed to present synergistic effect (0.36-0.49) according to the cell density, NPQ and YII of M. aeruginosa. With the combined effects of polyphenols on S. capricornutum, only additive action (0.52-1.62) was found. On the other hand, PA (2.97 mg L-1), GA (2.65 mg L-1) caused significant reductions of photosystem (PSII) and whole electron transport chain activities of M. aeruginosa by 71.43 and 18.37%, 70.95 and 40.77% (P<0.05), respectively, after 24-h exposure, but no inhibition effect was found in S. capricornutum. The dark respiration and photosystem I (PSI) activities of M. aeruginosa were significantly increased by exposure to PA and GA (P<0.05). Nevertheless, EA and CA had no influence on the electron transport activities of the tested organisms. These results indicate that the reduction in photosynthetic activity of M. aeruginosa and the synergistic effect of allelochemicals may be two important causes for the inhibition of undesired phytoplankton by submersed macrophytes in natural aquatic ecosystems, and PSII in cyanobacteria is considered to be one of the target sites attacked by allelopathic polyphenols. (C) 2010 Published by Elsevier B.V. |
| 英文摘要 | For revealing the mechanism of allelopathic influence on phytoplankton by aquatic macrophytes, the growth and photosynthetic activities of cyanobacteria Microcystis aeruginosa and the chlorophyte Selenastrum capricornutum were investigated when they coexisted with submerged macrophyte Myriophyllum spicatum and were exposed to allelopathic polyphenols: pyrogallic acid (PA), gallic acid (GA), ellagic acid (EA) and (+)-catechin (CA). According to the results of coexistence assays, the non-photochemical quenching (NPQ) and effective quantum efficiency (YII) of M. aeruginosa were affected earlier and more rapidly than the cell density. However, the influence of M. spicatum on S. capricornutum was not found. When the Toxicity Index (TI) was applied to evaluate the combined effects of binary and multiple mixtures of polyphenols, it was found that the four tested polyphenols with the proportion identified in the M. spicatum-cultured solution were observed to present synergistic effect (0.36-0.49) according to the cell density, NPQ and YII of M. aeruginosa. With the combined effects of polyphenols on S. capricornutum, only additive action (0.52-1.62) was found. On the other hand, PA (2.97 mg L(-1)), GA (2.65 mg L(-1)) caused significant reductions of photosystem (PSII) and whole electron transport chain activities of M. aeruginosa by 71.43 and 18.37%, 70.95 and 40.77% (P<0.05), respectively, after 24-h exposure, but no inhibition effect was found in S. capricornutum. The dark respiration and photosystem I (PSI) activities of M. aeruginosa were significantly increased by exposure to PA and GA (P<0.05). Nevertheless, EA and CA had no influence on the electron transport activities of the tested organisms. These results indicate that the reduction in photosynthetic activity of M. aeruginosa and the synergistic effect of allelochemicals may be two important causes for the inhibition of undesired phytoplankton by submersed macrophytes in natural aquatic ecosystems, and PSII in cyanobacteria is considered to be one of the target sites attacked by allelopathic polyphenols. (C) 2010 Published by Elsevier B.V. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Marine & Freshwater Biology; Toxicology |
| 类目[WOS] | Marine & Freshwater Biology ; Toxicology |
| 研究领域[WOS] | Marine & Freshwater Biology ; Toxicology |
| 关键词[WOS] | BLUE-GREEN-ALGAE ; MICROCYSTIS-AERUGINOSA ; GROWTH-INHIBITION ; PHOTOSYSTEM-II ; STRATIOTES-ALOIDES ; PHYTOPLANKTON ; FLUORESCENCE ; PHOTOSYNTHESIS ; PHOTOINHIBITION ; ALLELOCHEMICALS |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [30870221, 20877093, 50808172]; China Postdoctoral Science Foundation [20080431013] |
| 语种 | 英语 |
| WOS记录号 | WOS:000278891100011 |
| 公开日期 | 2010-12-23 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/13697]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Junying,Liu, Biyun,Wang, Jing,et al. Study on the mechanism of allelopathic influence on cyanobacteria and chlorophytes by submerged macrophyte (Myriophyllum spicatum) and its secretion[J]. AQUATIC TOXICOLOGY,2010,98(2):196-203. |
| APA | Zhu, Junying,Liu, Biyun,Wang, Jing,Gao, Yunni,&Wu, Zhenbin.(2010).Study on the mechanism of allelopathic influence on cyanobacteria and chlorophytes by submerged macrophyte (Myriophyllum spicatum) and its secretion.AQUATIC TOXICOLOGY,98(2),196-203. |
| MLA | Zhu, Junying,et al."Study on the mechanism of allelopathic influence on cyanobacteria and chlorophytes by submerged macrophyte (Myriophyllum spicatum) and its secretion".AQUATIC TOXICOLOGY 98.2(2010):196-203. |
入库方式： OAI收割
来源：水生生物研究所
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