Evaluation of soil metal bioavailability estimates using two plant species (L. perenne and T. aestivum) grown in a range of agricultural soils treated with biosolids and metal salts

2011 ◽  
Vol 159 (6) ◽  
pp. 1523-1535 ◽  
Author(s):  
Amanda Black ◽  
Ronald G. McLaren ◽  
Suzanne M. Reichman ◽  
Thomas W. Speir ◽  
Leo M. Condron
Keyword(s):  
Plant Species ◽  
Agricultural Soils ◽  
Metal Salts ◽  
Metal Bioavailability ◽  
Soil Metal

Site- and species-specific patterns of metal bioavailability in edible plantsThis paper is one of a selection published in a Special Issue comprising papers presented at the 50th Annual Meeting of the Canadian Society of Plant Physiologists (CSPP) held at the University of Ottawa, Ontario, in June 2008.

Botany ◽  
2009 ◽  
Vol 87 (7) ◽  
pp. 702-711 ◽  
Author(s):  
Hollydawn Murray ◽  
Karen Thompson ◽  
Sheila M. Macfie
Keyword(s):  
Plant Species ◽  
Contaminated Soils ◽  
Metal Content ◽  
Agricultural Soils ◽  
Mobile Element ◽  
Threshold Value ◽  
Metal Bioavailability ◽  
High Metal Content ◽  
Accumulation Of Metals ◽  
Species Specific

Differences in metal uptake between plant species and soil types were compared to assess the safe use of mildly contaminated soils for the growth of edible food crops. Accumulation of metals in five plant species grown in each of three field soils and a commercial soil were evaluated in a controlled environment. Metal bioavailability varied more with plant species than with type of soil. Among a number of physical and chemical soil properties that were measured, high metal content and low percent organic matter were the best predictors of increased metal bioavailability. Contamination levels of metals measured in soil and vegetable samples were used to calculate bioconcentration factors and hazard quotients. The results indicated significant differences between plant species. The species accumulating the most metal was carrot, and the most mobile element was cadmium. Some hazard quotients exceeded the threshold value of 1, even in soils considered uncontaminated by current guidelines. Overall, these results reinforce the need to include soil characteristics when setting threshold guidelines for metal content of agricultural soils and indicate the need for species-specific planting guidelines.

Metal bioavailability dynamics during a two-year trial using ryegrass (Lolium perenne L.) grown in soils treated with biosolids and metal salts

Soil Research ◽  
2012 ◽  
Vol 50 (4) ◽  
pp. 304 ◽  
Author(s):  
Amanda Black ◽  
Ronald G. McLaren ◽  
Suzanne M. Reichman ◽  
Thomas W. Speir ◽  
Leo M. Condron ◽  
...  
Keyword(s):  
Lolium Perenne ◽  
Metal Salts ◽  
Metal Bioavailability ◽  
Metal Concentrations ◽  
Lolium Perenne L ◽  
Lysimeter Experiment ◽  
Zn Concentration ◽  
Free Ion ◽  
Ion Activity ◽  
Soil Metal

A 24-month field lysimeter experiment using ryegrass (Lolium perenne L.) grown in three soil types was used to investigate metal bioavailability dynamics following amendment with biosolids and metal salts (Cd, Cu, Ni, Zn). Common surrogates of soil metal bioavailability (total soil metal, EDTA, Ca(NO3)2, total dissolved, diffusive gradient in thin film, and modelled free ion activity) were determined on soil samples taken every 6 months. Ryegrass was also harvested every 6 months and analysed for metal concentrations. Across soils and treatments dissolved organic carbon (DOC) and pH decreased, whereas dissolved Ca and Mg increased with time. The free ion activity concentrations of each metal also increased over 24 months, whereas Ca(NO3)2-extracted metals were unchanged. Zinc presented the most changes in bioavailability status, with total Zn concentration decreasing over time, and EDTA-extractable and soil solution Zn increasing significantly by 1.82 mg kg–1 (1.1%) and 1.52 mg L–1 (29%), respectively. Shoot concentration of Zn increased by 1.32 mg kg–1 (2.7%), whereas shoot Ni concentration decreased by 0.65 mg kg–1 (4%). The findings of this study clearly demonstrated that over 24 months, soil metal bioavailability and shoot metal concentrations register only minor changes and appear to be unaffected by soil DOC and pH fluctuations.

scholarly journals Metal bioaccumulation alleviates the negative effects of herbivory on plant growth

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Grazieli F. Dueli ◽  
Og DeSouza ◽  
Servio P. Ribeiro
Keyword(s):  
Plant Growth ◽  
Metal Concentration ◽  
Plant Species ◽  
Metal Ion ◽  
Natural Habitat ◽  
Plant Responses ◽  
Metal Bioaccumulation ◽  
Negative Effects ◽  
Quantitative Evidence ◽  
Soil Metal

AbstractMetalliferous soils can selectively shape plant species’ physiology towards tolerance of high metal concentrations that are usually toxic to organisms. Some adapted plant species tolerate and accumulate metal in their tissues. These metals can serve as an elemental defence but can also decrease growth. Our investigation explored the capacity of natural metal accumulation in a tropical tree species, Eremanthus erythropappus (Asteraceae) and the effects of such bioaccumulation on plant responses to herbivory. Seedlings of E. erythropappus were grown in a glasshouse on soils that represented a metal concentration gradient (Al, Cu, Fe, Mn and Zn), and then the exposed plants were fed to the herbivores in a natural habitat. The effect of herbivory on plant growth was significantly mediated by foliar metal ion concentrations. The results suggest that herbivory effects on these plants change from negative to positive depending on soil metal concentration. Hence, these results provide quantitative evidence for a previously unsuspected interaction between herbivory and metal bioaccumulation on plant growth.

scholarly journals Metal accumulation and tolerance of selected plants of asbestos tailings (Stragari)

2015 ◽  
Vol 69 (3) ◽  
pp. 313-321
Author(s):  
Snezana Brankovic ◽  
Radmila Glisic ◽  
Vera Djekic ◽  
Мarija Marin
Keyword(s):  
Plant Species ◽  
Metal Content ◽  
Metal Uptake ◽  
Metal Accumulation ◽  
Limit Values ◽  
Alyssum Murale ◽  
Sanguisorba Minor ◽  
Soil Metal ◽  
Euphorbia Cyparissias ◽  
Asbestos Tailings

The aim of this study was to determine the concentrations of 11 metals in the soil of asbestos tailings in Stragari, Serbia, and in the selected plant species that grow on it, to determine the ability of the plant species in accumulation and tolerance of researched metals. Concentrations of elements researched in the soil had this order: Mg> Fe> Ca> Ni> Cr> Mn> Co> Zn> Pb> Cu> Cd. Concentrations of the metals in plants was variable, dependent on the plant species and types of metals, and graded in the order: Mg> Ca> Fe> Ni> Mn> Cr> Zn> Co> Pb> Cu> Cd. The concentrations of Ni and Cr in the investigated soil were above remediation values, as well as the maximum allowable concentration of substances in the soil according to regulation of Republic of Serbia, and the concentration of Cd and Co were above limit values for a given metals in the soil. The metal uptake does not necessarily correlate with metal content in the soil. Metal uptake by plants depends on the bioavailability of the metal in soils, which in turn depends on the retention time of the metal, as well as the interaction with other elements and substances. However, the most Mg, Fe, Mn, Pb, Cd, Co and Cr were found in species Sanguisorba minor, Ca and Cu in Eryngium serbicum, Ni in Alyssum murale, and Zn in Euphorbia cyparissias. In the Euphorbia cyparissias, it were determined the biological absorption coefficients greater than 1 for Zn and Cu, and in the species Eryngium serbicum and Sanguisorba minor greater than 2 for Cu. The results of this study emphasize the tolerance of several metal by species Sanguisorba minor, present the ability of Euphorbia cyparissias in accumulation of Zn and Cu, as well as of Eryngium serbicum and Sanguisorba minor in accumulation of Cu. Obtained results present the momentary picture of investigated locality, open a lot of questions connected with relationships soil/plant, contents of elements in both systems, their interactions and influences and represented the base for further research.

scholarly journals Effect of Plant Species and Benomyl on Lead Concentration and Removal from Lead-enriched Soil

HortScience ◽  
2011 ◽  
Vol 46 (12) ◽  
pp. 1604-1607 ◽  
Author(s):  
Valtcho D. Zheljazkov ◽  
Tess Astatkie
Keyword(s):  
Plant Species ◽  
Contaminated Soils ◽  
Agricultural Soils ◽  
Indian Mustard ◽  
Controlled Environment ◽  
Lead Arsenate ◽  
Swiss Chard ◽  
Thorn Apple ◽  
Apple Tissue ◽  
Environment Experiment

Some agricultural soils in North America are lead (Pb)-enriched as a result of the application of lead arsenate (PbHAsO4) insecticide. A controlled-environment experiment was conducted with Pb-enriched Canning soil series in Nova Scotia, Canada, to evaluate the remediation potential of 10 plant species in combination with the fungicide benomyl applied as a soil drench to suppress mycorrhizae. Overall, the highest biomass was provided by yellow poppy followed by Indian mustard and thorn apple. The application of benomyl increased Pb concentration in thorn apple tissue but not in the other crops. The phytoremediation potential (Pb removal with the harvested biomass) was higher with clary sage, alyssum, garden sage, and Indian mustard with benomyl treatments and lower in the Swiss chard, thorn apple without benomyl, and in the geranium with benomyl treatments. The results suggest that some plants can be used for phytoremediation of mildly Pb-contaminated soils.

scholarly journals Measuring Soil Metal Bioavailability in Roadside Soils of Different Ages

Environments ◽  
2020 ◽  
Vol 7 (10) ◽  
pp. 91
Author(s):  
Shamali De Silva ◽  
Trang Huynh ◽  
Andrew S. Ball ◽  
Demidu V. Indrapala ◽  
Suzie M. Reichman
Keyword(s):  
Linear Models ◽  
Intrinsic Rate ◽  
Strong Relationship ◽  
Control Site ◽  
Roadside Soil ◽  
Metal Bioavailability ◽  
Roadside Soils ◽  
Metal Concentrations ◽  
Total Metal ◽  
Soil Metal

Finding a reliable method to predict soil metal bioavailability in aged soil continues to be one of the most important problems in contaminated soil chemistry. To investigate the bioavailability of metals aged in soils, we used roadside soils that had accumulated metals from vehicle emissions over a range of years. We collected topsoil (0–10 cm) samples representing new-, medium- and old-aged roadside soils and control site soil. These soils were studied to compare the ability of the diffusive gradients in thin films technique (DGT), soil water extraction, CaCl2 extraction, total metal concentrations and optimised linear models to predict metal bioavailability in wheat plants. The response time for the release of metals and the effect on metal bioavailability in field aged soils was also studied. The DGT, and extractable metals such as CaCl2 extractable and soil solution metals in soil, were not well correlated with metal concentrations in wheat shoots. In comparison, the strongest relationships with concentrations in wheat shoots were found for Ni and Zn total metal concentrations in soil (e.g., Ni r = 0.750, p = 0.005 and Zn r = 0.833, p = 0.001); the correlations were still low, suggesting that total metal concentrations were also not a robust measure of bioavailability. Optimised linear models incorporating soil physiochemical properties and metal extracts together with road age as measure of exposure time, demonstrated a very strong relationship for Mn R2 = 0.936; Ni R2 = 0.936 and Zn R2 = 0.931. While all the models developed were dependent on total soil metal concentrations, models developed for Mn and Zn clearly demonstrated the effect of road age on metal bioavailability. Therefore, the optimised linear models developed have the potential for robustly predicting bioavailable metal concentrations in field soils where the metals have aged in situ. The intrinsic rate of release of metals increased for Mn (R2 = 0.617, p = 0.002) and decreased for Cd (R2 = 0.456, p = 0.096), Cu (R2 = 0.560, p = 0.083) and Zn (R2 =0.578, p = 0.072). Nickel did not show any relationship between dissociation time (Tc) and road age. Roadside soil pH was likely to be the key parameter controlling metal aging in roadside soil.

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