Abstract：
:Arsenite-oxidizing bacteria (AOB) play a key role in the biogeochemical cycle of arsenic in the environment, and are used for the bioremediation of As contaminated groundwater; however, it is not yet known about how arsenic affects biofilm formations of AOB, and how biofilm formations affect bacterial arsenite-oxidizing activities. To address these issues, we isolated seven novel AOB strains from the arsenic-contaminated soils. They can completely oxidize 1.0 mM As(III) in 22-60 h. Their arsenite oxidase sequences show 43-99% identities to those of other known AOB. Strains Cug1, Cug2, Cug3, Cug4, and Cug6 are able to form biofilms with thickness of 15-95 µm, whereas Cug8 and Cug9 cannot form biofilms. It is interesting to see that arsenite inhibited the biofilm formations of heterotrophic AOB strains, but promoted the biofilm formations of autotrophic strains in a concentration-dependent manner. The arsenite-oxidizing rates of Cug1 and Cug4 biofilms are 31.6% and 27.6% lower than those of their suspension cultures, whereas the biofilm activities of other strains are similar to those of their suspension cultures. The biofilm formation significantly promoted the bacterial resistance to arsenic. This work is the first report on the complex correlations among environmental arsenic, bacterial biofilm formations and bacterial arsenite-oxidizing activities. The data highlight the diverse lifestyle of different AOB under arsenic stress, and provide essential knowledge for the screening of efficient AOB strains used for constructions of bioreactors.
journal_name
Ecotoxicol Environ Safjournal_title
Ecotoxicology and environmental safetyauthors
Zeng XC,He Z,Chen X,Cao QAD,Li H,Wang Ydoi
10.1016/j.ecoenv.2018.08.079subject
Has Abstractpub_date
2018-12-15 00:00:00pages
1-10eissn
0147-6513issn
1090-2414pii
S0147-6513(18)30820-0journal_volume
165pub_type
杂志文章abstract：:The differences in xenobiotic chemical content between organic and nonorganic products can be chemically measured. In this study, the deoxynucleotide composition of strawberry samples is used to demonstrate chromatographic methods of quantifying the differences between pesticide- and toxic-exposed strawberries. The sa...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1006/eesa.1999.1832
更新日期：1999-11-01 00:00:00
abstract：:Diesel is a commonly used fuel and a key pollutant on water surface through leaks and accidental spills, thus creating risk directly to planktons as well as other aquatic organisms. We assessed the toxicty of diesel and its water accommodated fraction (WAF) towards two microalgal species, Pseudokirchneriella subcapita...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2017.04.052
更新日期：2017-08-01 00:00:00
abstract：:Four toxicity bioassays were used for the biological characterisation of nine hazardous wastes and extracts. This evaluation included conventional and novel bioassays, and combined in vivo and in vitro tests in order to facilitate the effect characterisation. This test battery incorporated different relevant taxonomic...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2008.12.016
更新日期：2009-07-01 00:00:00
abstract：:High-performance liquid chromatography with electrochemical detection was used to measure N-acetyldopamine and N-acetyl 5-hydroxytryptamine in the cerebral ganglia of the African migratory locust, Locusta migratoria (fifth instar) exposed to lindane, a chlorinated insecticide. Locusts were poisoned by this insecticide...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/0147-6513(90)90050-f
更新日期：1990-08-01 00:00:00
abstract：:The potential of Hydrocotyle vulgaris as an aquatic plant species was evaluated for phytoremediation of C.I. Basic Red 46 (BR46) from nutrient solution. Under the optimized experimental conditions, BR46 was removed up to 95% from incubation medium by H. vulgaris. The ability of the plant in consecutive removal under l...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2013.03.035
更新日期：2013-07-01 00:00:00
abstract：:1,2-Hexanediol is commonly used in the cosmetic industry as a preservative, an emollient, and a moisturizing agent. However, studies on the scientific toxicity of 1,2-hexanediol are limited. In this study, we evaluated the potential toxic effects of 1,2-hexanediol using phytotoxicity and cytotoxicity testing methods. ...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2020.110796
更新日期：2020-09-15 00:00:00
abstract：:Toxicity of ash and particulate matter from the gases generated in coal fluidized bed combustion (FBC) has been determined by the Microtox assay according to the standard leachate procedure. Results are compared with the polycylic aromatic hydrocarbon (PAH) content of the particulate matter, which was determined by fl...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1006/eesa.1998.1667
更新日期：1998-09-01 00:00:00
abstract：:The objective of this study was to evaluate the chronic lethal and sublethal aquatic toxicity effects associated with the phytoremediation of water contaminated with 2,4,6-trinitrotoluene (TNT) by the wetland plant species Myriophyllum aquaticum (parrot feather). Rotifers (Brachionus calyciflorus) feeding on an algal ...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/s0147-6513(03)00007-1
更新日期：2003-06-01 00:00:00
abstract：:Nitrated polycyclic aromatic hydrocarbons (Nitro-PAHs) as important organic pollutants are ubiquitous in the atmospheric environment, agricultural soils and aquatic environments to pose a severe polluting risk. However, little is known about the mechanism of Nitro-PAHs genotoxicity in plants. We analyzed seeds germina...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2019.05.032
更新日期：2019-09-30 00:00:00
abstract：:Coal excavation and refinement processes generate substantial volumes of contaminated effluent that may be detrimental to aquatic ecosystems. As such, understanding the impacts of coal mine water releases on aquatic animals and ecosystems is essential for effectively managing and protecting neighboring environments. S...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2016.03.003
更新日期：2016-07-01 00:00:00
abstract：:High levels of organochlorines (OCs) have been measured in arctic char (Salvelinus alpinus) from Lake Ellasjøen on Bjørnøya, Norway (74.30°N, 19.0°E). In a nearby lake, Laksvatn, the OC-levels in arctic char were low. A previous study has shown that char from Ellasjøen had significantly higher levels of DNA double str...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2020.111846
更新日期：2021-03-01 00:00:00
abstract：:Cladoceran are animals of significant importance to freshwater bodies such that changes in their populations may result in drastic shifts in the food web. Numerous studies have investigated the effects of toxicants, and the effects of chemical and physical habitat changes to these animals. Most of these studies invest...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2016.10.018
更新日期：2017-01-01 00:00:00
abstract：:Airborne fine particulate matter PM2.5 was collected from May 2010 to December 2012 at Agra, a semi-urban site in north-central India. PM2.5 samples were chemically characterized for 16 polycyclic aromatic hydrocarbons by gas chromatography. PM2.5 values varied between 8.4 and 300 µg m(-3) with 55% of the values excee...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2015.01.006
更新日期：2015-04-01 00:00:00
abstract：:To provide insight into aluminum speciation in raw and in finished water and to investigate the factors that can affect it, specific aluminum fractions have been isolated and analyzed in water samples from three drinking water reservoirs in Sardinia (Italy) and at the outlet of their treatment plants. All water treatm...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1006/eesa.1999.1887
更新日期：2000-05-01 00:00:00
abstract：:We have studied the acute and subchronic oral toxicity of fluoranthene (FLA) in male and female F-344 rats. Single acute FLA doses of 0, 1000, 2000, and 3000 mg/kg body weight (BW) dissolved in peanut oil were administered daily by oral gavage. Subchronic doses of 0, 150, 750, and 1500 mg FLA/kg BW/day were administer...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/S0147-6513(03)00110-6
更新日期：2004-09-01 00:00:00
abstract：:Laboratory experiments were undertaken to relate biomarker responses to the toxicities of multi-walled carbon nanotubes (MWCNTs) and sodium pentachlorophenate (PCP-Na), both individually and combined. The acute toxicities of MWCNTs and PCP-Na on earthworm Eisenia fetida were studied through different exposure methods ...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2014.01.041
更新日期：2014-05-01 00:00:00
abstract：:Astilbin (ASB), a dihydroflavonol glycoside, is widely found in a variety of plants and in functional foods and acts as a powerful antioxidant. The aim of this study was to investigate the underlying mechanisms involved in the antagonistic effects of ASB on cadmium (Cd)-induced necroptosis in chicken peripheral blood ...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2019.110064
更新日期：2020-03-01 00:00:00
abstract：:In recent years, increasing eutrophication in large freshwater lakes, which are an important drinking water source for cities in China, have been resulted in substantial cyanobacteria blooms that could cause serious taste and odor (T&O) problems. In this investigation, three typical lakes (Songhua Lake, Chaohu Lake an...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2019.06.046
更新日期：2019-10-15 00:00:00
abstract：:Seasonal variations of polycyclic aromatic hydrocarbons (PAHs) in the surface sediments from 13 rivers in hilly regions of southern China were studied. Concentrations of PAHs analyzed in the wet season were higher than those analyzed in the dry season, with residues ranging from 74.3 to 1930.9 ng g-1 dw in the wet sea...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2018.03.004
更新日期：2018-07-30 00:00:00
abstract：:Interest in the application of sewage sludge as amendments to grow trees has continued to increase, especially for fast-growing trees such as poplars. In this study, two-year field trial was conducted to determine the effects of compost sewage sludge (CSS) soil application on the distributions of metal and nutrient el...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2019.06.043
更新日期：2019-10-30 00:00:00
abstract：:By studying the internal compartmentalization of metals in different subcellular fractions we are able to better understand the mechanisms of metal accumulation in organisms and the transfer of metals through trophic chains. We investigated the internal compartmentalization of cadmium (Cd) and zinc (Zn) in mealworm be...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2016.06.033
更新日期：2016-11-01 00:00:00
abstract：:The aim of this study was to test the sensitivity of computerized sperm motility analysis in the sea urchin Paracentrotus lividus as the endpoint in toxicity bioassays. The tested matrices were pore water samples collected in an agriculture-impacted Mediterranean lagoon, Lake Varano (Italy). Two standardized bioassays...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2010.05.003
更新日期：2010-10-01 00:00:00
abstract：:Cr (VI), which is a common heavy metal pollutant with strong oxidizing property, exists widely in nature. Organisms can be exposed to Cr (VI) through various means. Cr (VI) causes mitochondrial dysfunction after being absorbed by cells. Whether Cr (VI) induces the selective autophagic degradation of mitochondria, whic...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2020.110414
更新日期：2020-05-01 00:00:00
abstract：:Effects of chemical mixtures at environmentally relevant concentrations on endocrine systems of aquatic organisms are of concern. Triclocarban (TCC) and inorganic mercury (Hg2+) are ubiquitous in aquatic environments, and are known to interfere with endocrine pathways via different mechanisms of toxic action. However,...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2016.08.026
更新日期：2016-12-01 00:00:00
abstract：:Estuarine sediment contamination is a growing significant ecological issue in New Zealand. Methods of assessing toxicity and ecological impacts in a cost effective way are currently limited. Further to that is a need to develop bioassays that generate data quickly and cost effectively and have ecological relevance to ...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2007.12.008
更新日期：2008-07-01 00:00:00
abstract：:The estuaries and backwaters that are the potential breeding grounds of penaeid shrimps are subject to heavy metal pollution through industrial effluents and domestic sewage. In the present investigation, laboratory experiments were conducted to study the acute toxicity of lead on tolerance, oxygen consumption, ammoni...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1006/eesa.2000.2019
更新日期：2002-02-01 00:00:00
abstract：:Fragrant rice is a high-valued quality rice type which is gaining much popularity over the globe due to its better cooking qualities and special aromatic characteristics. Selenium (Se) and silicon (Si) could improve the growth and yield of rice; however, the combine effects of Se and Si (Se-Si treatments) on rice grai...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2020.110525
更新日期：2020-06-15 00:00:00
abstract：:In order to investigate pollution level, chemical speciation and health risk of exposure to heavy metals in street dust from smelting district, we carried the following studies: (a). the differences in the morphology of street dust in smelting and non-smelting districts using a scanning electron microscope; (b). the c...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/j.ecoenv.2020.110617
更新日期：2020-07-01 00:00:00
abstract：:A systematic comparative study has been performed on the various double salts based on silica. They are found to be more stable chemically and thermally than single salts of this type. Furthermore, these materials have a better selectivity for some pollutants chiefly found in the effluents of dyestuff and plating indu...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1016/0147-6513(89)90035-3
更新日期：1989-04-01 00:00:00
abstract：:The biological self-purification processes are a central point for the ecological states of rivers. The degradation efficiency of pollutants is mainly due to the microflora and can be detected with enzyme-activity tests. Extracellular-enzyme activity of freshwater sediments was measured, in a microcosm, versus differe...
journal_title：Ecotoxicology and environmental safety
pub_type： 杂志文章
doi：10.1006/eesa.1998.1656
更新日期：1998-05-01 00:00:00
