Heavy metals and marine diatoms: Influence of dissolved organic compounds on toxicity and selection for metal tolerance among four species

Water systems often contain complex macromolecular systems that absorb light. In marine environments, these light absorbing components are often at the air-water interface and can participate in the chemistry of...

Download Full-text

Pollution of organic compounds and heavy metals in a coal gangue dump of the Gequan Coal Mine, China

Chinese Journal of Geochemistry ◽

10.1007/s11631-013-0628-0 ◽

2013 ◽

Vol 32 (3) ◽

pp. 241-247 ◽

Cited By ~ 14

Author(s):

Jingsen Fan ◽

Yuzhuang Sun ◽

Xinyu Li ◽

Cunliang Zhao ◽

Duanxin Tian ◽

...

Keyword(s):

Heavy Metals ◽

Organic Compounds ◽

Coal Mine ◽

Coal Gangue

Download Full-text

Chemical Characterization of Dissolved Organic Compounds from Coastal Sea Surface Microlayers (Baltic Sea, Germany)

Environmental Science & Technology ◽

10.1021/es204492b ◽

2012 ◽

Vol 46 (19) ◽

pp. 10455-10462 ◽

Cited By ~ 32

Author(s):

Manuela van Pinxteren ◽

Conny Müller ◽

Yoshiteru Iinuma ◽

Christian Stolle ◽

Hartmut Herrmann

Keyword(s):

Baltic Sea ◽

Organic Compounds ◽

Chemical Characterization ◽

Sea Surface ◽

Coastal Sea ◽

Dissolved Organic Compounds

Download Full-text

Thermodynamic modelling of aqueous aerosols containing electrolytes and dissolved organic compounds

Journal of Aerosol Science ◽

10.1016/s0021-8502(00)00105-1 ◽

2001 ◽

Vol 32 (6) ◽

pp. 713-738 ◽

Cited By ~ 173

Author(s):

Simon L. Clegg ◽

John H. Seinfeld ◽

Peter Brimblecombe

Keyword(s):

Organic Compounds ◽

Thermodynamic Modelling ◽

Dissolved Organic Compounds ◽

Aqueous Aerosols

Download Full-text

Intraspecific variation in metal tolerance modulate competition between two marine diatoms

The ISME Journal ◽

10.1038/s41396-021-01092-9 ◽

2021 ◽

Author(s):

Björn Andersson ◽

Anna Godhe ◽

Helena L. Filipsson ◽

Linda Zetterholm ◽

Lars Edler ◽

...

Keyword(s):

Competitive Advantage ◽

Dose Response ◽

Metal Tolerance ◽

Marine Phytoplankton ◽

Strain Selection ◽

Control Treatment ◽

Toxic Stress ◽

Marine Diatoms ◽

Toxic Dose ◽

Multiple Strains

AbstractDespite widespread metal pollution of coastal ecosystems, little is known of its effect on marine phytoplankton. We designed a co-cultivation experiment to test if toxic dose–response relationships can be used to predict the competitive outcome of two species under metal stress. Specifically, we took into account intraspecific strain variation and selection. We used 72 h dose–response relationships to model how silver (Ag), cadmium (Cd), and copper (Cu) affect both intraspecific strain selection and competition between taxa in two marine diatoms (Skeletonema marinoi and Thalassiosira baltica). The models were validated against 10-day co-culture experiments, using four strains per species. In the control treatment, we could predict the outcome using strain-specific growth rates, suggesting low levels of competitive interactions between the species. Our models correctly predicted which species would gain a competitive advantage under toxic stress. However, the absolute inhibition levels were confounded by the development of chronic toxic stress, resulting in a higher long-term inhibition by Cd and Cu. We failed to detect species differences in average Cu tolerance, but the model accounting for strain selection accurately predicted a competitive advantage for T. baltica. Our findings demonstrate the importance of incorporating multiple strains when determining traits and when performing microbial competition experiments.

Download Full-text

In vivo and in vitro studies on heavy metal tolerance in Sesbania grandiflora L

Journal of Biotechnology Research Center ◽

10.24126/jobrc.2009.3.2.67 ◽

2009 ◽

Vol 3 (2) ◽

pp. 48-64

Author(s):

Kadhim M. Ibrahim ◽

Shaimaa A. Yousir

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Metal Tolerance ◽

Heavy Metal Tolerance ◽

Heavy Metal Concentration ◽

Callus Cultures ◽

Metal Levels ◽

Whole Plants

Several experiments were carried out to study heavy metal tolerance in tissue cultures or whole plants of S. grandiflora., Callus was induced and maintained on modified Murashige and Skoog, 1962 medium (MS) supplemented with (0.5)mg/l benzyl adenine and (2)mg/l 2,4-phenoxy acetic acid . Heavy metals (Cd, Co, Cu, Cr or Zn) were added to the culture medium at different concentrations as contamination agents. In order to asses the effect of these heavy metals on seed germination; seeds were sown in soil contaminated with different concentrations of heavy metals for 3 weeks. Atomic Absorption Spectrophotometer was used for analysis of samples taken from whole plants and callus cultures. Results showed that callus fresh weight decreased with increasing heavy metal concentration in cultural medium. Germination percentages and plant heights increased over time. However, a reduction occurred in these parameters with increasing heavy metal levels. Percentages of metals accumulated in calli were (0.001, 0.011, 0.012 and 0.013%) at (0.0, 0.05, 0.075 and 0.1)mg/l Cd respectively; (0.001, 0.008, 0.016 and 0.006%) at (0.0, 0.1, 0.25 and 0.5)mg/l Co respectively; (0.001, 0.020, 0.034 and 0.015%) at (0.0, 0.075, 0.2 and 0.5)mg/l Cu respectively; (0.001, 0.013, 0.012 and 0.010%) at (0.0, 0.25, 0.4 and 0.5)mg/l Cr respectively and (0.027, 0.051, 0.059 and 0.056%) at (0.0 , 0.75, 1.0 and 1.5)mg/l Zn respectively. Percentages of metals accumulated in whole plants were (0.08, 0.55, 1.11, 0.83 and 0.44%) at (0.0, 1.0, 2.0, 3.0 and 4.0)mg/Kg soil Cd respectively; (0.11, 0.22, 0.55, 0.47 and 0.44%) at (0.0, 15.0, 30.0 45.0 and 60.0)mg/Kg soil Co respectively; (0.01, 0.10, 0.57, 0.58 and 0.72%) at (0.0, 25.0, 50.0, 75.0 and 100.0)mg/Kg soil Cu respectively. (0.08, 0.80, 1.28, 1.31 and 0.88%) at (0.0, 25.0, 50.0, 75.0 and 100.0)mg/Kg soil Cr respectively and (0.06, 1.11, 1.20, 1.83 and 2.22%) at (0.0, 100.0, 200.0, 300.0 and 400.0)mg/Kg soil Zn respectively.

Download Full-text

The Influence of the Poles’ Lifestyle on the Quantity and Quality of Municipal Wastewater

Civil and Environmental Engineering Reports ◽

10.2478/ceer-2021-0045 ◽

2021 ◽

Vol 31 (3) ◽

pp. 265-275

Author(s):

Ewelina Płuciennik-Koropczuk ◽

Martyna Myszograj ◽

Sylwia Myszograj

Keyword(s):

Heavy Metals ◽

Wastewater Treatment ◽

Organic Compounds ◽

Municipal Wastewater ◽

Personal Care ◽

Total N ◽

Qualitative Characteristics ◽

Total P ◽

Wastewater Treatment Systems

Abstract The article presents lifestyle as an important factor determining the quantity and quality of municipal wastewater. The characteristic of wastewater in Poland has changed significantly in recent years. The qualitative characteristics of municipal wastewater indicate an increase of organic compounds and in the scope of micro-contaminants identified in them, e.g. nanoparticles, microplastics, pharmaceutical and personal care products or heavy metals. Therefore, the knowledge of parameters such as: BOD5, COD, total N, total P and suspension solids is no longer sufficient for the design and operation of wastewater treatment systems. Comprehensive research in this area is necessary to select those indicators that better describe the characteristics of wastewater.

Download Full-text

Heavy Metal Tolerance Bacillus spp Isolated From Crude Oil Polluted Soil

JOURNAL OF RESEARCH AND REVIEW IN SCIENCE ◽

10.36108/jrrslasu/0202.70.0180 ◽

2020 ◽

Vol 7 (1) ◽

Author(s):

Muibat Fashola

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Crude Oil ◽

Metal Tolerance ◽

Heavy Metal Tolerance ◽

Polluted Soil ◽

Diffusion Method ◽

Bacillus Species ◽

Antibiotics Resistance ◽

Bacillus Spp

Introduction: Indiscriminate dumping of spent oils enriched with heavy metals has led to increase in heavy metals load in the soil. Heavy metals exert toxic effects on biodegradation of organic pollutant in cocontaminated soil and there is need to find suitable strategies for their removal. Aim: The aim of this study was to assess the heavy metals resistance capability of indigenous Bacillus species in hydrocarbon polluted soil to nickel (Ni), Cadmium (Cd), Lead (Pb) and Chromium (Cr). Materials and Methods: Heavy metal tolerant bacteria were isolated from hydrocarbon polluted soil using Luria-Berthani agar supplemented with the respective metals and spread plate techniques. The isolates were putatively identified on the basis of their colonial morphology and biochemical characteristics and their antibiotics susceptibility pattern were evaluated using disc diffusion method. Results: The maximum tolerable concentration (MTC) of the four heavy metals to the selected isolates was 2 mM. Four bacteria isolates able to withstand the MTC were putatively identified as Bacillus subtilis, Bacillus megaterium, Bacillus laterosporus and Bacillus polymyxa. Out of the four Bacillus species, only B. laterosporus did not show multiple tolerance to the tested antibiotics which show that there is correlation between heavy metal tolerance and antibiotics resistance by the isolates. Conclusion: Multiple heavy metal tolerance Bacillus spp. were isolated from crude oil polluted soil. These bacteria could be suitable agents for bioaugmentation of hydrocarbon polluted soil co-contaminated with heavy metals.

Download Full-text