Physiological and biochemical responses of Microcystis aeruginosa to phosphine(PH 3)under elevated CO2

作     者：Xiaojun Niu Dongqing Zhang Runyuan Zhang Qi Song Yankun Li Mo Wang Xiaojun Niu;Dongqing Zhang;Runyuan Zhang;Qi Song;Yankun Li;Mo Wang

作者机构：School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaoming 525000China School of Environment and EnergySouth China University of TechnologyGuangzhou 510006China State Key Laboratory of Pollution Control and Resource ReuseNanjing 210093China Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlGuangzhou 510640China College of Architecture and Urban PlanningGuangzhou UniversityGuangzhou 510006China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2020年第32卷第8期

页      面：171-178页

核心收录：

学科分类：08[工学] 0815[工学-水利工程] 

基　　金：This work was supported by the Natural Science Foundation of Guangdong Province(No.2017A030313239) Research Project of Sino-Singapore International Joint Research Institute(No.202-A018001) the Jiangsu Natural Science Foundation(Nos.BK20180109,BK) the State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences(No.2016SKL011) the Ministry of Science and Technology of China for State Key Research and Development Project(No.2016YFC04007082) the Student Research Project of South China University of Technology(No.7387) and the State Key Laboratory of Pollution Control and Resource Reuse(No.PCRRF14006,PCRRF17018) 

主　　题：Phosphine M.aeruginosa CO2 Cyanobacteria bloom 

摘      要：Phosphine(PH3)is an important factor driving the outbreak of cyanobacterial blooms that produce toxic microcystin threating human *** clarify the physiological and biochemical responses of cyanobacteria to PH3 under elevated CO2 concentration,Microcystis aeruginosa was used in the coupling treatment of 1000 ppmv CO2 and PH3 at different concentrations *** chlorophyll a(Chl-a),carotenoid,net photosynthetic rate and total protein of *** exhibited evidently increasing tendency under the coupling treatment of 1000 ppmv CO2 and PH 3 at different concentrations(7.51×10^−3,2.48×10^−2,7.51×10^−2 mg/L).The coupling treatments resulted in the higher concentrations of Chl-a and carotenoid of ***,compared to those in the control and the treatment with CO2 alone,and their enhancement increased with the increase in PH 3 *** total antioxidant capacity(T-AOC)in the coupling treatment with CO2 and PH3 of 2.48×10^−2 mg/L and 7.51×10^−3 mg/L showed increasing tendency,compared to the treatment with PH 3 ***,the coupling treatment with 1000 ppmv CO2 and PH3 also altered the pH and DO level in the culture *** this regard,the coupling treatment with CO2 and PH3 at an appropriate concentration can enhance the resistance of *** to PH3 toxicity and is beneficial to the reproduction of ***,presumably resulting in potential for the outbreak of cyanobacteria *** the concern about global warming and the increase in atmospheric CO2 level,our research laid a foundation for the scientific understanding of the correlation between PH3 and cyanobacteria blooms.