Heavy metal toxicity to Lemna minor: studies on the time dependence of growth inhibition and the recovery after exposure.


:Environmental concentrations of toxic substances are not necessarily constant but fluctuate over time. Periods of intense exposure might be followed by episodes with a relatively low or no exposure, in principle allowing exposed organisms to recover from toxic injury. The growth reproduction assay with the limnic vascular plant Lemna minor allows for convenient studies on the time dependence of the aquatic toxicity of chemicals. Here we report on a study with four priority metals (Zn, Cu, Ni, Cd). Aims of the study were to determine the impact of the exposure duration on the observed toxicities and to determine the potential for recovery. The bioconcentrations of the test metals were recorded during the exposure in order to analyse, whether changes in the internal concentrations are a governing factor for the dynamics of toxicity. After an exposure of 7 days, Cd and Cu showed the highest toxicity to Lemna (EC50's of 1.9 and 9.7 microM respectively), while Ni and Zn had a slightly lower toxicity (EC50's of 56.3 and 46.1 microM respectively). Additionally, Zn showed a severely delayed toxicity and the exposed plants did not recover even 7 days after the exposure had ended. This is in sharp contrast to the other test metals, for which a considerable recovery was observed. These results indicate the necessity to more thoroughly consider the dynamics of toxicity, instead of recording toxic effects only after a constant exposure over a fixed time.






Drost W,Matzke M,Backhaus T




Has Abstract


2007-02-01 00:00:00














  • Hexavalent chromium-induced toxic effects on the antioxidant levels, histopathological alterations and expression of Nrf2 and MT2 genes in the branchial tissue of Ctenopharyngodon idellus.

    abstract::Ability of hexavalent chromium to accumulate and induce oxidative stress has been studied in the gills of Ctenopharyngodon idellus, with the resulting damage in the form of altered endogenous antioxidant enzyme activity and, histopathology in the tissue. The fish were exposed to 5.3 (C1) and 10.63 mg/L (C2) of hexaval...


    pub_type: 杂志文章


    authors: Jindal R,Handa K

    更新日期:2019-09-01 00:00:00

  • Can rainwater induce Fenton-driven degradation of herbicides in natural waters?

    abstract::Microcosm experiments were conducted to examine Fenton reaction-driven degradation of three common herbicides exposed to a variety of Fe(2+)-H2O2 combinations that are likely to be encountered in natural water environments. The results show that these combinations had significant (P<0.05) effects on removing the water...


    pub_type: 杂志文章


    authors: Qin J,Li H,Lin C,Chen G

    更新日期:2013-08-01 00:00:00

  • Mechanical property and structural evolution of alkali-activated slag-phosphate mine tailings mortars.

    abstract::The present work studies consolidation of phosphate mine tailings through alkaline activation process with the addition of slag for adjusting the gel structure. As increasing slag contents in the raw materials, more (Na,K)2O-CaO-Al2O3-SiO2-H2O (C-A-S-H) and (Na,K)2O-Al2O3-SiO2-H2O (N-A-S-H) gels were formed in the min...


    pub_type: 杂志文章


    authors: Wu J,Li J,Rao F,Yin W

    更新日期:2020-07-01 00:00:00

  • Suspect screening analysis in house dust from Belgium using high resolution mass spectrometry; prioritization list and newly identified chemicals.

    abstract::In recent years, several changes have been made to the composition of various products which are used indoors. Plenty of new chemical additives have been incorporated to materials to comply with current legislation and safety rules. Consequently, the emission profiles of contaminants detected indoors may change over t...


    pub_type: 杂志文章


    authors: Christia C,Poma G,Caballero-Casero N,Covaci A

    更新日期:2021-01-01 00:00:00

  • Competitive adsorption and transport of phthalate esters in the clay layer of JiangHan plain, China.

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    pub_type: 杂志文章


    authors: Liu H,Zhang D,Li M,Tong L,Feng L

    更新日期:2013-09-01 00:00:00

  • Removing selected steroid hormones, biocides and pharmaceuticals from water by means of biogenic manganese oxide nanoparticles in situ at ppb levels.

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    pub_type: 杂志文章


    authors: Furgal KM,Meyer RL,Bester K

    更新日期:2015-10-01 00:00:00

  • Iron reactivity in anoxic sediments in the Ría de Vigo (NW Spain).

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    pub_type: 杂志文章


    authors: Ramírez-Pérez AM,de Blas E

    更新日期:2017-05-01 00:00:00

  • Pollutants degradation performance and microbial community structure of aerobic granular sludge systems using inoculums adapted at mild and low temperature.

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    pub_type: 杂志文章


    authors: Muñoz-Palazon B,Pesciaroli C,Rodriguez-Sanchez A,Gonzalez-Lopez J,Gonzalez-Martinez A

    更新日期:2018-08-01 00:00:00

  • Solvent extraction and tandem dechlorination for decontamination of soil.

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    pub_type: 杂志文章


    authors: Nam P,Kapila S,Liu Q,Tumiatti W,Porciani A,Flanigan V

    更新日期:2001-05-01 00:00:00

  • Electro-Fenton assisted sonication for removal of ammoniacal nitrogen and organic matter from dye intermediate industrial wastewater.

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    pub_type: 杂志文章


    authors: Menon P,Anantha Singh TS,Pani N,Nidheesh PV

    更新日期:2020-10-26 00:00:00

  • Comparison of EDTA-enhanced phytoextraction and phytostabilisation strategies with Lolium perenne on a heavy metal contaminated soil.

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    pub_type: 杂志文章


    authors: Lambrechts T,Gustot Q,Couder E,Houben D,Iserentant A,Lutts S

    更新日期:2011-11-01 00:00:00

  • Pesticide tailwater deeply treated by tubular porous electrode reactor (TPER): Purpose for discharging and cost saving.

    abstract::Pesticide tailwater often contains residual and toxic contaminants of triazole fungicides (TFs) due to their poor biodegradability which will do great harm to local aquatic systems. For this case, a novel electrochemical reactor (TPER) equipped a tubular porous RuO2-Sb2O5-SnO2 electrode was assembled and then employed...


    pub_type: 杂志文章


    authors: Zhang Y,Wei K,Xu A,Han W,Sun X,Li J,Shen J,Wang L

    更新日期:2017-10-01 00:00:00

  • The effect of Hg(II) ions on the free radicals of humic substances and their model compounds.

    abstract::Humic acids (HAs) and humin (HU) complexes with Hg(II) ions were studied using EPR, FTIR and CP MAS (13)C NMR spectroscopies. The analysis of the EPR spectra showed, especially for HA, a significant decrease in the g-factor value for the resulting Hg(II) radical species, as compared with that observed for the parent r...


    pub_type: 杂志文章


    authors: Jerzykiewicz M

    更新日期:2013-07-01 00:00:00

  • Toxicity removal assessments related to degradation pathways of azo dyes: Toward an optimization of Electro-Fenton treatment.

    abstract::The degradation pathway of Acid Orange 7 (AO7) by Electro-Fenton process using carbon felt cathode was investigated via HPLC-UV and LC-MS, IC, TOC analysis and bioassays (Vibrio Fischeri 81.9% Microtox(®) screening tests). The TOC removal of AO7 reached 96.2% after 8 h treatment with the optimal applied current densit...


    pub_type: 杂志文章


    authors: Le TXH,Nguyen TV,Yacouba ZA,Zoungrana L,Avril F,Petit E,Mendret J,Bonniol V,Bechelany M,Lacour S,Lesage G,Cretin M

    更新日期:2016-10-01 00:00:00

  • Bioenhanced dissolution of dense non-aqueous phase of trichloroethylene as affected by iron reducing conditions: model systems and environmental samples.

    abstract::The anaerobic biotransformation of trichloroethylene (TCE) can be affected by competing electron acceptors such as Fe (III). This study assessed the role of Fe (III) reduction on the bioenhanced dissolution of TCE dense non-aqueous phase liquid (DNAPL). Columns were set up as 1-D diffusion cells consisting of a lower ...


    pub_type: 杂志文章


    authors: Paul L,Smolders E

    更新日期:2015-01-01 00:00:00

  • Surveying the mutagenicity of tap water to elicit the effects of purification processes on Japanese tap water.

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    pub_type: 杂志文章


    authors: Takanashi H,Kishida M,Nakajima T,Ohki A,Akiba M,Aizawa T

    更新日期:2009-10-01 00:00:00

  • The effect of hydrodynamic cavitation on Microcystis aeruginosa: Physical and chemical factors.

    abstract::The various effects of hydrodynamic cavitation (HC) on algal growth inhibition were investigated. The gas-vacuolate species Microcystis aeruginosa responded differently to the gas-vacuole-negative alga Chlorella sp. When M. aeruginosa was subjected to HC, both its cell density and photosynthetic activity were subseque...


    pub_type: 杂志文章


    authors: Li P,Song Y,Yu S,Park HD

    更新日期:2015-10-01 00:00:00

  • Decolorization of Orange G and Remazol Brilliant Blue R by the white rot fungus Dichomitus squalens: toxicological evaluation and morphological study.

    abstract::Dichomitus squalens efficiently decolorized both Orange G and Remazol Brilliant Blue R (RBBR) at concentrations of 0.5gl(-1) and 3gl(-1) in static and shaken culture and also on solid medium within 14d. The presence of the dyes in the culture medium mostly caused a decrease in biomass production and in growth rate, wh...


    pub_type: 杂志文章


    authors: Eichlerová I,Homolka L,Benada O,Kofronová O,Hubálek T,Nerud F

    更新日期:2007-10-01 00:00:00

  • Response of hormone in rice seedlings to irrigation contaminated with cyanobacterial extract containing microcystins.

    abstract::Microcystins released by cyanobacteria affect crop growth and productivity, and even food safety. Plant hormones play a vital role in regulating growth, development and stress response in plants. Therefore, we studied the response of hormones including abscisic acid (ABA), indole-3-acetic acid (IAA), Zeatin (ZT) and g...


    pub_type: 杂志文章


    authors: Liang C,Liu H

    更新日期:2020-10-01 00:00:00

  • (Eco)toxicity and biodegradability of protic ionic liquids.

    abstract::Ionic liquids (ILs) are often claimed to be "environmentally friendly" compounds however, the knowledge of their potential toxicity towards different organisms and trophic levels is still limited, in particular when protic ionic liquids (PILs) are addressed. This study aims to evaluate the toxicity against various mic...


    pub_type: 杂志文章


    authors: Oliveira MV,Vidal BT,Melo CM,de Miranda Rde C,Soares CM,Coutinho JA,Ventura SP,Mattedi S,Lima ÁS

    更新日期:2016-03-01 00:00:00

  • Specific issues in health risk assessment of endocrine disrupting chemicals and international activities.

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    pub_type: 杂志文章,评审


    authors: Younes M

    更新日期:1999-10-01 00:00:00

  • Application of sand particles modified with NH2-MIL-101(Fe) as an efficient visible-light photocatalyst for Cr(VI) reduction.

    abstract::This study presented chemical immobilization of an iron(III)-based metal-organic framework [NH2-MIL-101(Fe)] on the surface of sand particles and its application for Cr(VI) photocatalytic reduction using visible light. The surface of sand particles was functionalized with (3-chloropropyl)trimethoxy silane to provide t...


    pub_type: 杂志文章


    authors: Sadeghian S,Pourfakhar H,Baghdadi M,Aminzadeh B

    更新日期:2020-12-18 00:00:00

  • Anaerobic incorporation of the radiolabeled explosive TNT and metabolites into the organic soil matrix of contaminated soil after different treatment procedures.

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    pub_type: 杂志文章


    authors: Drzyzga O,Bruns-Nagel D,Gorontzy T,Blotevogel KH,von Löw E

    更新日期:1999-04-01 00:00:00

  • Assessing the distribution and human health risk of organochlorine pesticide residues in sediments from selected rivers.

    abstract::Sediment samples from major agricultural producing areas in Edo state Nigeria were analysed for α-HCH, γ-HCH, β-HCH and ∑DDT with the aim of elucidating contamination profiles, distribution characteristics, carcinogenic and non-carcinogenic risk of these compounds in these regions. Analysis was done using a gas chroma...


    pub_type: 杂志文章


    authors: Ogbeide O,Tongo I,Ezemonye L

    更新日期:2016-02-01 00:00:00

  • Biotic and abiotic degradation of illicit drugs, their precursor, and by-products in soil.

    abstract::This study presents the first systematic information on the degradation patterns of clandestine drug laboratory chemicals in soil. The persistence of five compounds - parent drugs (methamphetamine, 3,4-methylenedioxymethamphetamine (MDMA)), precursor (pseudoephedrine), and synthetic by-products N-formylmethylamphetami...


    pub_type: 杂志文章


    authors: Pal R,Megharaj M,Kirkbride KP,Heinrich T,Naidu R

    更新日期:2011-10-01 00:00:00

  • Phytoremediation of textile effluent and mixture of structurally different dyes by Glandularia pulchella (Sweet) Tronc.

    abstract::Plants of Glandularia pulchella (Sweet) Tronc. performed decolorization of structurally different dyes to varying extent because of induction of different set of enzymes in response to specific dyes. Differential pattern of enzyme induction with respect to time was obtained for lignin peroxidase, veratryl alcohol oxid...


    pub_type: 杂志文章


    authors: Kabra AN,Khandare RV,Waghmode TR,Govindwar SP

    更新日期:2012-04-01 00:00:00

  • Phenoxyalkanoic acid herbicide sorption and the effect of co-application in a Haplic Cambisol with contrasting management.

    abstract::The adsorption and desorption behaviour of two phenoxyalkanoic acid herbicides (MCPA and mecoprop-p) in a Haplic Cambisol with tillage and grassland management was examined using a batch equilibrium method. Additionally, the effect on adsorption of the simultaneous presence of the two herbicides was also studied. The ...


    pub_type: 杂志文章


    authors: Piwowarczyk AA,Holden NM

    更新日期:2013-01-01 00:00:00

  • The remediation of sulfonamides from the environment by Pleurotus eryngii mycelium. Efficiency, products and mechanisms of mycodegradation.

    abstract::The objective of the study was to assess the applicability of the mycelium obtained from the in vitro cultures of nontoxic bracket fungus, Pleurotus eryngii, to sulfonamides mycodegradation. Samples containing one of the six selected sulfonamides, sulfanilamide derivatives, were incubated with the mycelium of P. eryng...


    pub_type: 杂志文章


    authors: Baran W,Adamek E,Włodarczyk A,Lazur J,Opoka W,Muszyńska B

    更新日期:2021-01-01 00:00:00

  • Aerobic thermophilic treatment of sewage sludge contaminated with 4-nonylphenol.

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    pub_type: 杂志文章


    authors: Banat FA,Prechtl S,Bischof F

    更新日期:2000-08-01 00:00:00

  • Carbon storage in Amazonia during the last glacial maximum: secondary data and uncertainties.

    abstract::The Amazonian forest is, due to its great size, carbon storage capacity and present-day variability in carbon uptake and release, an important component of the global carbon cycle. Paleo-environmental reconstruction is difficult for Amazonia due to the scarcity of primary palynological data and the mis-interpretation ...


    pub_type: 杂志文章


    authors: Turcq B,Cordeiro RC,Sifeddine A,Simões Filho FF,Albuquerque AL,Abrão JJ

    更新日期:2002-12-01 00:00:00