Occurrence and spatial distributions of microcystins in Poyang Lake, the largest freshwater lake in China
文献类型: 外文期刊
第一作者: Zhang, Dawen
作者: Zhang, Dawen;Liao, Qiegen;Zhang, Li;Wang, Donggen;Luo, Linguang;Chen, Yuwei;Zhong, Jiayou;Liu, Jutao
作者机构:
关键词: Microcystins;Spatial distribution;Poyang Lake;Intracellular MCs;Extracellular MCs
期刊名称:ECOTOXICOLOGY ( 影响因子:2.823; 五年影响因子:2.958 )
ISSN: 0963-9292
年卷期: 2015 年 24 卷 1 期
页码:
收录情况: SCI
摘要: Occurrence and spatial distributions of microcystins (MCs; MC-RR, -YR, -LR, -LA, -LF, -LW) in Poyang Lake were studied during the period from July 6 to July 18, 2012, by using ultra-high-performance liquid chromatography-electrospray ionization tandem triple quadrupole/mass spectrometry (UPLC-MS/MS). MC-RR was the most dominant variant (94.70 and 84.73 % for intracellular (cellular MCs) and extracellular (dissolved MCs) MCs, respectively) in Poyang Lake, followed by MC-LR (4.65 and 13.17 %, respectively), MC-YR (0.8 and 2.63 %, respectively), and MC-LA (0.02 and 0.00 %), while MC-LW and MC-LF were not detected. Total MCs concentrations (intracellular +extracellular MCs) ranged between 0.0036 and 7.97 mu g/L, with an average of 0.79 mu g/L, and only two sampling stations with the total MCs concentrations exceeded the drinking water guideline level of 1 mu g/L for MC-LR proposed by World Health Organization. The overall spatial pattern of intracellular and extracellular MCs in Poyang Lake demonstrates decreasing trends from east to west, and the south part higher than the north part. Intracellular MCs content was negatively correlated with total nitrogen (r = -0.34, p < 0.01) and NO3 (r = -0.35, p < 0.01), while no significant correlation was found between intracellular MCs concentration and total phosphorus, NH4, and NO2 (p > 0.05), suggesting that NO3 might be a regulating factor for MCs production in Poyang Lake. In addition, intracellular MCs concentrations were positively correlated with wind speed, Microcystis and Cyanobacteria biomass (r = 0.34-0.51, p < 0.05), indicating that wind speed plays an important role in the spatial distributions of MCs, and NO3, toxic cyanobacteria (mainly Microcystis), and wind speed seem to be the important forcing factors driving MCs spatial distributions in Poyang Lake.
分类号:
- 相关文献
作者其他论文 更多>>
-
Whole-genome resequencing reveals genetic diversity and selection characteristics of dairy goat
作者:Xiong, Jinke;Bao, Jingjing;Hu, Wenping;Shang, Mingyu;Zhang, Li
关键词:dairy goat; genetic diversity; population structure; selective signal; milk production traits
-
Pre-harvest Nitrogen Limitation and Continuous Lighting Improve the Quality and Flavor of Lettuce (Lactuca sativa L.) under Hydroponic Conditions in Greenhouse
作者:Yang, Xiao;Hu, Jiangtao;Wang, Zheng;Huang, Tao;Zhang, Li;Peng, Jie;Yang, Qichang;Xiang, Yuting;Tomas-Barberan, Francisco A.
关键词:flavonoids; phenolic compounds; sesquiterpene lactones; LED lighting; greenhouse; lettuce taste
-
Thymol Induces Cell Death of Fusarium oxysporum f. sp. niveum via Triggering Superoxide Radical Accumulation and Oxidative Injury In Vitro
作者:Hao, Yini;Sun, Changwei;Chen, Xuenai;Wang, Yuxiao;Yang, Lifei;Zhang, Jiao;Lu, Haiyan;Chen, Jian;Shi, Zhiqi;Zhang, Li;Huang, Sijie
关键词:cell death; fungicide; Fusarium oxysporum; lipid peroxidation; thymol
-
Genomic Analysis Reveals Candidate Genes Underlying Sex-Linked Eyelid Coloboma, Feather Color Traits, and Climatic Adaptation in Huoyan Geese
作者:Wen, Junhui;Zhang, Li;Gu, Hongchang;Wen, Junhui;Zhao, Xiurong;Zhang, Xinye;Ren, Xufang;Wang, Gang;Chen, Anqi;Qu, Lujiang;Yu, Jincheng;Li, Haiying;Wang, Huie;Wang, Huie
关键词:goose; eyelid coloboma; feather color; climate adaptation; genome
-
Transcription factor CsMYB77 negatively regulates fruit ripening and fruit size in citrus
作者:Zhang, Li;Xu, Yang;Li, Yanting;Zheng, Saisai;Zhao, Zhenmei;Chen, Meiling;Yi, Hualin;Wu, Juxun;Yang, Haijian
关键词:
-
Chryseobacterium herbae Isolated from the Rhizospheric Soil of Pyrola calliantha H. Andres in Segrila Mountain on the Tibetan Plateau
作者:Zhang, Li;Li, Yan;Zhang, Li;Wang, Yan;Kong, Delong;Ma, Qingyun;Ruan, Zhiyong;Wang, Yan;Xing, Zhen;Ma, Qingyun
关键词:Chryseobacterium herbae sp. nov.; alpine ecosystems; rhizosphere soil; Gram-staining-negative; Pyrola calliantha H. Andres; genomic; shotgun proteomics
-
SlMYB7, an AtMYB4-Like R2R3-MYB Transcription Factor, Inhibits Anthocyanin Accumulation in Solanum lycopersicum Fruits
作者:Zhang, Li;Duan, Zedi;Ma, Shuang;Sun, Minghui;Xiao, Yunhong;Ni, Na;Chen, Lijing;Sun, Yibo;Ma, Shuang;Sun, Shaokun;Irfan, Muhammad
关键词:tomato; anthocyanin; SlMYB7; MBW complex; negative regulation