| Glyphosate Accelerates the Proliferation of Microcystis aeruginosa, a Dominant Species in Cyanobacterial Blooms | |
Wang, Wenjing; Jiang, Ming; Sheng, Yanqing
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| 发表期刊 | ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
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| ISSN | 0730-7268 |
| 2021-02 | |
| 卷号 | 40期号:2页码:342-351 |
| 关键词 | Microcystis aeruginosa Microcystin Glyphosate Dissolved organic matter |
| DOI | 10.1002/etc.4942 |
| 英文摘要 | Glyphosate is a commonly used herbicide known for its high performance in killing certain plants and grasses; however, its use is regulated due to its harmful effects on the aquatic environment. The present study investigated and compared the toxic mechanisms of glyphosate on Microcystis aeruginosa (a toxin-producing cyanobacterium) under 2 conditions: 0 parts per thousand saline media (experiment I) and 2.5 parts per thousand saline media (experiment II). The results indicated that an appropriate concentration of glyphosate provided a phosphate source for M. aeruginosa, resulting in an increased specific growth rate in both experimental groups compared with the controls. Glyphosate-enhanced alkaline phosphatase (ALP) activity increased by up to 1.37-fold in experiment I and 1.68-fold in experiment II. Moreover, the activities of superoxide dismutase (SOD) and catalase (CAT) decreased at glyphosate concentrations below 1.2 mg L-1 but increased at concentrations greater than 1.2 mg L-1 in experiment I, whereas SOD and CAT activities decreased in experiment II and declined by 64 and 49% in the 30 mg L-1 treatments. Furthermore, the transcript abundances of the pyruvate carboxylase (pcB), microcystin synthetase B (mcyB), and paired-like homeobox (phoX) genes were up-regulated by up to 6.92-, 3.63-, and 2.27-fold in experiment I and 6.74-, 6.55-, and 4.86-fold in experiment II after 96 h of incubation. The addition of glyphosate stimulated the production of dissolved organic matter including tryptophan-like substances, fulvic acid-like substances, (marine) humic acid-like substances, and microcystin-leucine-arginine in the culture. In conclusion, glyphosate stimulates the proliferation of M. aeruginosa and enhances the release of dissolved organic matter in saltwater ecosystems. Environ Toxicol Chem 2020;00:1-10. (c) 2020 SETAC |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31600370, 41373100] ; Science and Technology Plan of Yantai City [2018ZHGY080, 2018ZHGY083] ; Regional Key Project of STS of the Chinese Academy of Sciences [KFJ-STS-QYZX-057] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | EXTRACELLULAR POLYMERIC SUBSTANCES ; GROWTH ; RESPONSES ; PHOSPHORUS ; TOLERANCE ; TOXICITY ; WATER |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Toxicology |
| WOS记录号 | WOS:000600758400001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/30512 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心 |
| 作者单位 | Chinese Acad Sci, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai Inst Coastal Zone Res, Yantai, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Wenjing,Jiang, Ming,Sheng, Yanqing. Glyphosate Accelerates the Proliferation of Microcystis aeruginosa, a Dominant Species in Cyanobacterial Blooms[J]. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,2021,40(2):342-351. |
| APA | Wang, Wenjing,Jiang, Ming,&Sheng, Yanqing.(2021).Glyphosate Accelerates the Proliferation of Microcystis aeruginosa, a Dominant Species in Cyanobacterial Blooms.ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,40(2),342-351. |
| MLA | Wang, Wenjing,et al."Glyphosate Accelerates the Proliferation of Microcystis aeruginosa, a Dominant Species in Cyanobacterial Blooms".ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 40.2(2021):342-351. |
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