Responses and toxin bioaccumulation in duckweed (Lemna minor) under microcystin-LR, linear alkybenzene sulfonate and their joint stress
文献类型: 外文期刊
第一作者: Wang, Zhi
作者: Wang, Zhi;Xiao, Bangding;Song, Lirong;Wang, Chunbo;Zhang, Junqian;Wang, Zhi;Zhang, Junqian
作者机构:
关键词: microcystins;linear alkylbenzene sulfonate;accumulation;superoxide dismutase;aquatic plants
期刊名称:JOURNAL OF HAZARDOUS MATERIALS ( 影响因子:10.588; 五年影响因子:10.129 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Microcystin-LR (MCLR) and linear alkylbenzene sulfonate (LAS) are commonly found in eutrophic lakes due to toxic cyanobacterial blooms and exogenous organic compounds pollution. However, the ecotox-icological risk of their combination in the aquatic environment is unknown. This study investigated the effects of MCLR, LAS and their mixture on duckweed {Lemna minor) growth and physiological responses. MCLR accumulation in duckweed, with or without LAS, was also examined. Growth of duckweed and chlorophyll-a contents were significantly reduced after 8 d exposure to high concentrations of MCLR (≥3 μg/ml), LAS (≥20 μg/ml) and their mixture (≥3 + 10 μg/ml). After 2d of exposure, superoxide dis-mutase activity and glutathione content in duckweed increased with increasing concentrations of MCLR, LAS and their mixture, with a significant difference observable after 8d of exposure. When MCLR and LAS concentrations were lower (≤0.1 +1 μg/ml), the interaction of them is synergistic, but when the concentrations were higher, the synergy was weak. MC accumulation was much higher at 2 d than at 8 d when duckweed was exposed to lower concentrations of MCLR (≤3 μg/ml) or MCLR-LAS (≤3 + 10 μg/ml). Furthermore, LAS significantly enhanced the accumulation of MCLR in duckweed, even with LAS concentrations as low as 0.3 μg/ml (environmental concentration), indicating that greater negative ecological risks and higher MCLR phytoremediation potentials of duckweed might occur in MCLR-LAS-concomitant water.
分类号: TB1
- 相关文献
作者其他论文 更多>>
-
Optimum design of Chinese solar greenhouses for maximum energy availability
作者:Xu, Demin;Fei, Shuaipeng;Wang, Zhi;Ma, Yuntao;Zhu, Jinyu
关键词:Solar greenhouse; Energy saving; Horticulture; Energy economics; Optimum design; Sustainability
-
Changes in CO2 concentration drive a succession of toxic and non-toxic strains of Microcystis blooms
作者:Jiang, Jingyu;Zeng, Jiaying;Song, Lirong;Gan, Nanqin;Jiang, Jingyu;Zeng, Jiaying;Wang, Jingkai;Song, Lirong;Shan, Kun;Gan, Nanqin;Wang, Jingkai;Shan, Kun;Zuo, Jun;Wei, Nian
关键词:CO2; Toxic Microcystis; Non-toxic Microcystis; Succession; XGBoost model; Microcystis blooms
-
The biological functions of microcystins
作者:Wei, Nian;Song, Lirong;Gan, Nanqin;Wei, Nian;Hu, Chenlin;Dittmann, Elke
关键词:Microcystins; mcy gene; Biological functions; Cyanobacteria
-
Potential distribution under climate change and ecological niche differences between Actinidia chinensis complex
作者:Wang, Zhi;Zhang, Lei;Wang, Zhi;Li, Zuozhou;Jiang, Quan;Yao, Xiaohong;Meng, Sen;Hu, Guangming
关键词:MaxEnt; Kiwifruit; Cytotypes; Niche differentiation; Climate change
-
Influence of CrylAb protein on growth and development of a predatory spider, Pardosa pseudoannulata, from protective perspectives
作者:He, Yuan;Chao, Yinying;Tang, Yun-e;Wang, Juan;Wang, Zhi;Peng, Yuan-de;Lv, Bo
关键词:CrylAb protein; Pardosa pseudocomulam; Enzyme activity; Tissue; Subcellular organelles; Transcriptome
-
Symbiotic nitrogen fixation enhanced crop production and mitigated nitrous oxide emissions from paddy crops
作者:Dong, Yubing;Zhang, Junqian;Xu, Xintong;Xiong, Zhengqin;Dong, Yubing;Dong, Qingjun;Zhang, Ankang
关键词:Green manure; Hairy vetch; Symbiotic nitrogen fixation; Greenhouse gas; Rice -upland cropping
-
Phytoremediation with application of anaerobic fermentation residues regulate the assembly of ecological clusters within co-occurrence network in ionic rare earth tailings soil: A pot experiment
作者:Chen, Liumeng;Xing, Tao;Wang, Zhi;Kong, Xiaoying;Sun, Yongmin;Chen, Liumeng;Chen, Shasha;Long, Yun;Xu, An;Wu, Qiangjian;Chen, Liumeng;Wang, Zhi;Kong, Xiaoying;Wang, Zhi;Kong, Xiaoying
关键词:Rare earth tailings soil; Anaerobic fermentation residues; Pennisetum hybrid; Ecological cluster; Assembly pattern; Driving factor