Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
J Hazard Mater. 2023 Mar 5;445:130604. doi: 10.1016/j.jhazmat.2022.130604. Epub 2022 Dec 15.
Harmful cyanobacteria blooms (HCBs) occurred frequently and become a serious scientific challenge. Copper sulfate (CuSO) is a broad-spectrum chemical algaecide to control algae blooms. Herein, the Microcystis aeruginosa was exposed to different CuSO (0.0, 0.2 and 0.5 mg/L) to assess the variations in algal physiological process and metabolic profiles. The results indicated that exposure to CuSO of 0.5 mg/L at 72 h could significantly inhibit the cell growth and photosynthetic capacity of M. aeruginosa, including chl-a content and chlorophyll fluorescence parameters. Plasma membrane damage causing cell lysis of M. aeruginosa increased the K release. The increase of SOD and CAT suggested that CuSO treatment caused oxidative stress in algal cells. Different doses of CuSO modified the carbon metabolic potential, algal cells had their unique metabolic mode thereby. Moreover, the research further verified that CuSO would also inhibit algal growth and change algal community structure in site-collected water application. Overall, laboratory results of M. aeruginosa to CuSO and site-collected water application of algal responses to CuSO might be conducive to uncovering the controlling mechanism of algae and the potential effect of carbon cycling in an ecological environment.
有害蓝藻水华（HCBs）频繁发生，成为一个严重的科学挑战。硫酸铜（CuSO）是一种广谱化学杀藻剂，可用于控制藻类水华。在此，将铜绿微囊藻暴露于不同浓度的 CuSO（0.0、0.2 和 0.5mg/L）中，以评估藻类生理过程和代谢谱的变化。结果表明，暴露于 0.5mg/L CuSO 72h 可显著抑制铜绿微囊藻的细胞生长和光合作用能力，包括叶绿素 a 含量和叶绿素荧光参数。质膜损伤导致铜绿微囊藻细胞裂解，增加了 K 的释放。SOD 和 CAT 的增加表明 CuSO 处理导致藻类细胞发生氧化应激。不同剂量的 CuSO 改变了碳代谢潜能，藻类细胞具有其独特的代谢模式。此外，该研究还进一步证实，CuSO 会抑制现场采集水样中藻类的生长和改变藻类群落结构。总的来说，实验室条件下铜绿微囊藻对 CuSO 的响应以及现场采集水样中藻类对 CuSO 的响应，可能有助于揭示藻类的控制机制以及生态环境中碳循环的潜在影响。
