Temporal and spatial distribution of Microcystis biomass and genotype in bloom areas of Lake Taihu.


:Cyanobacterial blooms as a global environmental issue are of public health concern. In this study, we investigated the spatial (10 sites) and temporal (June, August and October) variations in: 1) their biomass based on chlorophyll-a (chl-a) concentration, 2) their toxic genotype based on gene copy ratio of mcyJ to cpcBA, and 3) their cpcBA genotype composition of Microcystis during cyanobacterial bloom in Lake Taihu. While spatial-temporal variations were found in chl-a and mcyJ/cpcBA ratio, only spatial variation was observed in cpcBA genotype composition. Samples from northwestern part had a higher chl-a, but mcyJ/cpcBA ratio didn't vary among the sites. High chl-a was observed in August, while mcyJ/cpcBA ratio and genotypic richness increased with time. The spatial variations in chl-a and mcyJ/cpcBA ratio and temporal variation in cpcBA genotype were correlated negatively with dissolved N and positively with dissolved P. Spatial distribution of Microcystis biomass was positively correlated with nitrite and P excluding October, but no correlation was found for spatial distribution of mcyJ/cpcBA ratio and cpcBA genotype. Spatial distribution of toxic and cpcBA genotypes may result from horizontal transport of Microcystis colonies, while spatial variation in Microcystis biomass was probably controlled by both nutrient-mediated growth and horizontal transport of Microcystis. The temporal variation in Microcystis biomass, toxic genotype and cpcBA genotype composition were related to nutrient levels, but cause-and-effect relationships require further study.






Guan DX,Wang X,Xu H,Chen L,Li P,Ma LQ




Has Abstract


2018-10-01 00:00:00












  • Single and cartel effect of pesticides on biochemical and haematological status of Clarias batrachus: A long-term monitoring.

    abstract::Pesticide mixtures are common in the streams of agricultural or urban catchments. Individual and cartel toxicity of four different pesticides, namely Endosulfan, Carbofuran, Methyl parathion and Cypermethrin were studied. Sub acute exposure (1/10th of LC50) for 1, 7, 15, 30 and 60 days in Clarias batrachus active tiss...


    pub_type: 杂志文章,评审


    authors: Narra MR

    更新日期:2016-02-01 00:00:00

  • Determination and estimation of water solubilities and octanol/water partition coefficients for derivates of benzanilides.

    abstract::A shake-flask method was used to determine the water solubilities (Sw) and the octanol/water partition coefficients(Kow) of 14 derivates of benzanilides. The results showed that the octanol/water partition coefficients were correlated (r=-0.93) with Sw. The linear solvation energy relationship(LSER) and molecular conn...


    pub_type: 杂志文章


    authors: Dai J,Jin L,Wang L,Zhang Z

    更新日期:1998-10-01 00:00:00

  • The antihistamine diphenhydramine is demethylated by anaerobic wastewater microorganisms.

    abstract::While emerging pharmaceutical contaminants are monitored in wastewater treatment and the environment, there is little information concerning their microbial metabolites. The transformation of diphenhydramine by microorganisms in anaerobic digester sludge was investigated using anaerobic cultures amended with 1 mM diph...


    pub_type: 杂志文章


    authors: Wolfson SJ,Porter AW,Villani TS,Simon JE,Young LY

    更新日期:2018-07-01 00:00:00

  • Regulation of extracellular and intracellular prolactin on cell proliferation and survival rate through GHR/JAK2/STAT3 pathway in NSCLC.

    abstract::Styrene increases serum prolactin (PRL) concentration. Hyperprolactinemia is associated with poor prognosis in lung cancer patients, but the mechanism of PRL action is unclear. The aims of this study were to (i) investigate the mechanism of PRL-action receptor in NSCLC cells (ii) measure whether PRL was secreted by NS...


    pub_type: 杂志文章


    authors: Chou JC,Lieu FK,Ho DM,Shen HY,Lin PH,Hu S,Wang SW,Lin H,Wang PS

    更新日期:2021-02-01 00:00:00

  • Effect of magnetic ion exchange (MIEX®) on removal of emerging organic contaminants.

    abstract::In this study, the removal of nine emerging organic contaminants was investigated by using anion exchange resins. The selected compounds were carbamazepine, atrazine, simazine, estrone, bisphenol A, methylparaben, ethylparaben, propylparaben and butylparaben. Two different magnetic anionic exchanger resins were tested...


    pub_type: 杂志文章


    authors: López-Ortiz CM,Sentana-Gadea I,Varó-Galvañ PJ,Maestre-Pérez SE,Prats-Rico D

    更新日期:2018-10-01 00:00:00

  • A novel organo-zeolite adduct for environmental applications: sorption of phenol.

    abstract::A novel organo-zeolite adduct has been synthesized by sorbing humic acids (HA) onto zeolitic tuff and then heating the resulting complex at 330°C for 1.5h. Desorption tests showed that this procedure effectively immobilized HA on the tuff. The crystal structure of the zeolitic tuff and the chemical structure of HA wer...


    pub_type: 杂志文章


    authors: Leone V,Canzano S,Iovino P,Salvestrini S,Capasso S

    更新日期:2013-04-01 00:00:00

  • Metal accumulation in poplar plant grown with industrial wastes.

    abstract::In this study the effects of different levels of industrial wastes on growth traits and metal accumulation in aerial portions were determined for Populusxeuramericana clone I-214. The experiment started in April 2003. Scions of Populusxeuramericana clone I-214, were grown outdoor near Pisa (Italy), in lisimeters fille...


    pub_type: 杂志文章


    authors: Giachetti G,Sebastiani L

    更新日期:2006-06-01 00:00:00

  • Chloride imbalances in soil lysimeters.

    abstract::The assumption that soil neither acts as a source or a sink of chloride is evaluated by incubating soil cores in lysimeters in a climate chamber under controlled conditions. Some of the lysimeters acted as a sink while others acted as a source of chloride. Considerable amounts of organic chlorine were lost by leaching...


    pub_type: 杂志文章


    authors: Rodstedth M,Ståhlberg C,Sandén P,Oberg G

    更新日期:2003-07-01 00:00:00

  • Realizing a high-rate sulfidogenic reactor driven by sulfur-reducing bacteria with organic substrate dosage minimization and cost-effectiveness maximization.

    abstract::Biological sulfur reduction is an attractive sulfidogenic technology for the treatment of organics-deficient metal-laden wastewater, because it theoretically reduces the electron donor consumption by 75%, compared to sulfate reduction. However, reducing the external organic substrate dosage may lower the sulfur reduct...


    pub_type: 杂志文章


    authors: Guo J,Wang J,Qiu Y,Sun J,Jiang F

    更新日期:2019-12-01 00:00:00

  • Theoretical study on the atmospheric transformation mechanism of pirimiphos-methyl initiated by O3.

    abstract::Pirimiphos-methyl (PMM) is a widely used organophosphorus pesticide that can be released into the atmosphere in gas and condensed phases. It possesses a PS bond and an N,N-dialkyl group adjacent to pyrimidine, which are common functional groups for pesticides. Currently, the reaction mechanisms of O3 with these functi...


    pub_type: 杂志文章


    authors: Yang B,Wang Y,Shu J,Zhang P,Sun W,Li N,Zhang Y

    更新日期:2015-11-01 00:00:00

  • Immunoquantitation of cytochromes P450 1A and P450 2B and comparison with chlorinated hydrocarbon levels in archived polar bear liver samples.

    abstract::The present study examined the utility of an immunoblot method for quantitation of cytochrome P450 isozymes in archived liver samples as a bioassay of exposure to halogenated hydrocarbons. Hepatic microsomes were prepared from 44 archived polar bear (Ursus maritimus) liver homogenates that had been stored at approxima...


    pub_type: 杂志文章


    authors: Bandiera SM,Torok SM,Letcher RJ,Norstrom RJ

    更新日期:1997-03-01 00:00:00

  • Effects of imidazolium-based ionic liquids with different anions on wheat seedlings.

    abstract::The effects of five imidazolium ionic liquids with different anions were studied in hydroponically grown wheat seedlings at concentrations of 50, 100, 150, 200, 250, and 300 mg L-1. The results showed that shoots and roots grew shorter and dry weight decreased with increasing concentrations of ionic liquids. Moreover,...


    pub_type: 杂志文章


    authors: Chen Z,Zhou Q,Guan W,Wang J,Li Y,Yu N,Wei J

    更新日期:2018-03-01 00:00:00

  • Immunochemical rapid determination of quinoxyfen, a priority hazardous pollutant.

    abstract::In 2013, quinoxyfen was included in the list of priority hazard pollutants of the European Water Framework Directive due to its toxicity to aquatic organisms. However, few analytical methods for the analysis of this fungicide have been reported and no rapid immunochemical methods have been published so far. In the pre...


    pub_type: 杂志文章


    authors: Duncan H,Abad-Somovilla A,Abad-Fuentes A,Agulló C,Mercader JV

    更新日期:2018-11-01 00:00:00

  • Treatment of phenolic wastewater by horseradish peroxidase immobilized by bioaffinity layering.

    abstract::Horseradish peroxidase was immobilized by bioaffinity layering and used for the treatment of wastewater containing p-chlorophenol. For this purpose, lectin Concanavalin A was bound to Sephadex beads. The glycoenzyme peroxidase was layered upon this Con A layer. Subsequently, alternate layers of the enzyme and Con A we...


    pub_type: 杂志文章


    authors: Dalal S,Gupta MN

    更新日期:2007-03-01 00:00:00

  • Electrokinetic enhancement removal of heavy metals from industrial wastewater sludge.

    abstract::An enhanced electrokinetic process for removal of metals (Cr, Cu, Fe, Ni, Pb, Zn) from an industrial wastewater sludge was performed. The electrokinetic experiments were conducted under a constant potential gradient (1.25 V cm(-1)) with processing fluids of tap water (TW), sodium dodecylsulfate (SDS) and citric acid (...


    pub_type: 杂志文章


    authors: Yuan C,Weng CH

    更新日期:2006-09-01 00:00:00

  • Changes in soil toxicity by phosphate-aided soil washing: effect of soil characteristics, chemical forms of arsenic, and cations in washing solutions.

    abstract::This study was set to investigate the changes in the toxicity of arsenic (As)-contaminated soils after washing with phosphate solutions. The soil samples collected from two locations (A: rice paddy and B: forest land) of a former smelter site were contaminated with a similar level of As. Soil washing (0.5 M phosphate ...


    pub_type: 杂志文章


    authors: Jho EH,Im J,Yang K,Kim YJ,Nam K

    更新日期:2015-01-01 00:00:00

  • Potential of aeration flow rate and bio-char addition to reduce greenhouse gas and ammonia emissions during manure composting.

    abstract::Aeration is an important factor influencing CO2, CH4, N2O and NH3 emissions from the composting process. Both CH4 and N2O are potent greenhouse gases (GHG) of high importance. Here, we examined the effects of high and low aeration rates together with addition of barley straw with and without bio-char on GHG and NH3 em...


    pub_type: 杂志文章


    authors: Chowdhury MA,de Neergaard A,Jensen LS

    更新日期:2014-02-01 00:00:00

  • Gene expression in Pseudomonas aeruginosa exposed to hydroxyl-radicals.

    abstract::Recent studies have shown the efficiency of hydroxyl radicals generated via ultraviolet (UV)-based advanced oxidation processes (AOPs) combined with hydrogen peroxide (UV/H2O2) as a treatment process in water. The effects of AOP treatments on bacterial gene expression was examined using Pseudomonas aeruginosa strain P...


    pub_type: 杂志文章


    authors: Aharoni N,Mamane H,Biran D,Lakretz A,Ron EZ

    更新日期:2018-05-01 00:00:00

  • Biodegradability of biofilm extracellular polymeric substances.

    abstract::This study discovered that biofilm extracellular polymeric substances (EPS) are biodegradable by their own producers and by other microorganisms when they are starved. The study was performed in a comparative fashion to examine the biodegradability of biofilm EPS by the microorganisms from the original biofilm (its ow...


    pub_type: 杂志文章


    authors: Zhang X,Bishop PL

    更新日期:2003-01-01 00:00:00

  • Serum concentrations of persistent organic pollutants and colorectal cancer risk: A case-cohort study within Korean National Cancer Center Community (KNCCC) cohort.

    abstract:BACKGROUND & AIMS:Recent prospective cohort studies have suggested that circulating persistent organic pollutants (POPs) may be associated with the development of cancers. We investigated the association between pre-diagnostic serum concentrations of POPs and colorectal cancer (CRC) risk. METHODS:A case-cohort study w...


    pub_type: 杂志文章


    authors: Park EY,Kim J,Park E,Oh JK,Kim B,Lim MK

    更新日期:2021-01-08 00:00:00

  • Electrochemical mineralization of the azo dye Acid Red 29 (Chromotrope 2R) by photoelectro-Fenton process.

    abstract::The degradation of 100 mL of 244 mg L(-1) of the azo dye Acid Red 29 (AR29) has been studied by photoelectro-Fenton (PEF) using an undivided cell containing a boron-doped diamond (BDD) anode and an air-diffusion cathode under UVA irradiation. The effect of current density, concentration of catalytic Fe(2+) and pH on t...


    pub_type: 杂志文章


    authors: Almeida LC,Garcia-Segura S,Arias C,Bocchi N,Brillas E

    更新日期:2012-10-01 00:00:00

  • The use of a lacertid lizard as a model for reptile ecotoxicology studies--part 1 field demographics and morphology.

    abstract::At the European level, lacertid lizards have been proposed as potential model species for reptile ecotoxicology. We studied demographic and morphological aspects of natural field subpopulations of Podarcis bocagei inhabiting similar agricultural habitats which were either regularly exposed to pesticides, or not. Param...


    pub_type: 杂志文章


    authors: Amaral MJ,Carretero MA,Bicho RC,Soares AM,Mann RM

    更新日期:2012-05-01 00:00:00

  • Antioxidant system efficiently protects goldfish gills from Ni(2+)-induced oxidative stress.

    abstract::Fish gills are target organs for waterborne metal ions and this work aimed to investigate the effects of waterborne Ni(2+) (10, 25 and 50 mg L(-1)) on goldfish gills. A special focus was on the relationship between Ni uptake and the homeostasis of reactive oxygen species (ROS) in the gills, the tissue, in direct conta...


    pub_type: 杂志文章


    authors: Kubrak OI,Husak VV,Rovenko BM,Poigner H,Kriews M,Abele D,Lushchak VI

    更新日期:2013-01-01 00:00:00

  • Accelerated ciprofloxacin biodegradation in the presence of magnetite nanoparticles.

    abstract::Ciprofloxacin (CIP) biodegradation was investigated using enrichments obtained in the presence of magnetite nanoparticles, CIP and human fecal sewage. CIP addition inhibited methanogenic activity and altered the bacterial community composition. The magnetite-supplemented enrichments significantly promoted CIP biodegra...


    pub_type: 杂志文章


    authors: Yang Z,Xu X,Dai M,Wang L,Shi X,Guo R

    更新日期:2017-12-01 00:00:00

  • Differential regulation and the underlying mechanisms of clay minerals to Escherichia coli under the stress of polymyxin B: Comparing halloysite with kaolinite.

    abstract::The reuse of polymyxin B (PMB) has attracted extensive attention. Although the resistance mechanism to PMB is clear, there are few reports on the regulation mechanisms and effects of clay minerals on bacteria induced by PMB. The focus of this study is to investigate the multidrug resistance, cell morphology and physio...


    pub_type: 杂志文章


    authors: Liu J,Wu P,Wang F,Niu W,Ahmed Z,Chen M,Lu G,Dang Z

    更新日期:2021-02-01 00:00:00

  • The impact of chlorinated solvent co-contaminants on the biodegradation kinetics of 1,4-dioxane.

    abstract::1,4-Dioxane (dioxane), a probable human carcinogen, is used as a solvent stabilizer for 1,1,1-trichloroethane (TCA) and other chlorinated solvents. Consequently, TCA and its abiotic breakdown product 1,1-dichloroethene (DCE) are common co-contaminants of dioxane in groundwater. The aerobic degradation of dioxane by mi...


    pub_type: 杂志文章


    authors: Mahendra S,Grostern A,Alvarez-Cohen L

    更新日期:2013-03-01 00:00:00

  • Occurrence and removal of 17α-ethynylestradiol (EE2) in municipal wastewater treatment plants: Current status and challenges.

    abstract::As a synthetic estrogen, 17α-ethynylestradiol (EE2) has been known to show the strong estrogenic potency. This work critically reviewed the occurrence and removal of EE2 in municipal wastewater treatment plants (WWTPs). Based on the on-site investigations from 282 municipal WWTPs across 29 countries, the concentration...


    pub_type: 杂志文章,评审


    authors: Tang Z,Liu ZH,Wang H,Dang Z,Liu Y

    更新日期:2021-01-04 00:00:00

  • Vitamin and thyroid status in arctic grayling (Thymallus arcticus) exposed to doses of 3,3',4,4'-tetrachlorobiphenyl that induce the phase I enzyme system.

    abstract::Induction of phase I biotransformation enzymes is recognized as a hallmark response in fish exposed to coplanar PCBs. Depletions of vitamins A and E and disrupted thyroid hormone and glandular structure secondary to this induction have not yet been examined in an arctic fish species. Arctic grayling were exposed to a ...


    pub_type: 杂志文章


    authors: Palace VP,Allen-Gil SM,Brown SB,Evans RE,Metner DA,Landers DH,Curtis LR,Klaverkamp JF,Baron CL,Lockhart WL

    更新日期:2001-10-01 00:00:00

  • Identification of relevant micropollutants in Austrian municipal wastewater and their behaviour during wastewater treatment.

    abstract::The European Union has defined environmental quality standards (EQSs) for surface waters for priority substances and several other pollutants. Furthermore national EQSs for several chemicals are valid in Austria. The study investigated the occurrence of these compounds in municipal wastewater treatment plant (WWTP) ef...


    pub_type: 杂志文章


    authors: Clara M,Windhofer G,Weilgony P,Gans O,Denner M,Chovanec A,Zessner M

    更新日期:2012-06-01 00:00:00

  • Sorption of perfluorooctane sulfonate and perfluorooctanoate on activated sludge.

    abstract::Perfluorinated compounds (PFCs) as one class of emerging pollutants have caused great attention in recent years. In this study, activated sludge was used to adsorb perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) in aqueous solution in order to investigate their sorption behavior and possible uptake mech...


    pub_type: 杂志文章


    authors: Zhou Q,Deng S,Zhang Q,Fan Q,Huang J,Yu G

    更新日期:2010-09-01 00:00:00