Abstract
The single and joint toxicity effects of Cu, Cr(III), and Cr(VI) on the root elongation of pakchoi in solution and soil were investigated. The median effective concentration (EC50) was determined to examine the toxic thresholds of the test elements. The results showed that individual contamination by Cu, Cr(III), or Cr(VI) can inhibit the root elongation of pakchoi. The EC50 values of the test elements were 2.02 mg/L and 195.8 mg/kg, 62.2 mg/L and 1,773 mg/kg, and 6.88 mg/L and 8.08 mg/kg in solution and soil, respectively. Toxic unit (TU) was introduced to determine the outcome in combined tests, and different behaviors were observed in both solution and soil. The coexistence of Cu and Cr(III) in solution exhibited an antagonistic effect (EC50mix = 1.76 TUmix), whereas a synergistic effect was observed in soil (EC50mix = 0.76 TUmix). In contrast, combined Cu–Cr(VI) showed a less than additive toxicity both in solution and soil, with EC50mix values of 3.31 and 1.24 TUmix. In conclusion, the coexistence of toxicity in Cu–Cr(III) and Cu–Cr(VI) differs from the toxicity exhibited individually by Cu, Cr(III), and Cr(VI). Heavy metal interaction also changes depending on the medium.





Similar content being viewed by others
Explore related subjects
Discover the latest articles and news from researchers in related subjects, suggested using machine learning.References
Jiang JP, Wu LH, Li N, Luo YM, Liu L, Zhao QG, Zhang L, Christie P (2010) Effects of multiple heavy metal contamination and repeated phytoextraction by Sedum plumbizincicola on soil microbial properties. Euro J Soil Bio 46:18–26
Acero P, Mandado JMA, Gomez J, Gimeno MJ, Auque LF, Torrijo FJ (2003) Environmental impact of heavy-metal dispersion in the Huerva River (Iberian Range, NE Spain). Environ Geol 43:950–956
Reinheckel T, Sitte N, Ullrich O, Kuckelkorn U, Davies KJA, Grune T (1998) Comparative resistance of the 20S and 26S proteasome to oxidative stress. Biochem J 335:637–642
He ZLL, Yang XE, Stoffella PJ (2005) Trace elements in agroecosystems and impacts on the environment. J Trace Elem Med Bio 19:125–140
Patsikka E, Kairavuo M, Sersen F, Aro EM, Tyystjarvi E (2002) Excess copper predisposes photosystem II to photoinhibition in vivo by outcompeting iron and causing decrease in leaf chlorophyll. Plant Physiol 129:1359–1367
Guo XY, Ma YB, Wang XD, Chen SB (2010) Re-evaluating the effects of organic ligands on copper toxicity to barley root elongation in culture solution. Chem Spec Bioavailab 22:51–59
Stern RM (1982) Chromium compounds: production and occupational exposure. In: Langard S (ed) Biological and environmental aspects of chromium. Elsevier, Amsterdam, pp 5–47
Gutierrez MF, Gagneten AM, Paggi JC (2010) Copper and chromium alter life cycle variables and the equiproportional development of the freshwater copepod notodiaptomus conifer (SARS). Water Air Soil Poll 213:275–286
Katz SA, Salem H (1993) The toxicology of chromium with respect to its chemical speciation—a review. J Appl Toxicol 13:217–224
Vignati DAL, Dominik J, Beye ML, Pettine M, Ferrari BJD (2010) Chromium(VI) is more toxic than chromium(III) to freshwater algae: a paradigm to revise? Ecotox Environ Safe 73:743–749
Daoust CM, Bastien C, Deschenes L (2006) Influence of soil properties and aging on the toxicity of copper on compost worm and barley. J Environ Qual 35:558–567
Lee SE, Lee JU, Chon HT, Lee JS (2008) Reduction of Cr(VI) by indigenous bacteria in Cr-contaminated sediment under aerobic condition. J Geochem Explor 96:144–147
Leita L, Margon A, Pastrello A, Arcon I, Contin M, Mosetti D (2009) Soil humic acids may favour the persistence of hexavalent chromium in soil. Environ Pollut 157:1862–1866
Debelius B, Forja JM, DelValls A, Lubian LM (2010) Toxic effect of copper on marine picophytoplankton populations isolated from different geographic locations. Sci Mar 74:133–141
Bucher AS, Schenk MK (2000) Characterization of phytoavailable copper in compost-peat substrates and determination of a toxicity level. J Am Soc Hortic Sci 125:765–770
Keyhani J, Keyhani E, Arzi L (2007) Alterations in lignin peroxidase and ascorbate peroxidase activities in Crocus sativus L. corms exposed to copper. Acta Horticulturae 461:427–433, Proceedings of the 2nd International Symposium on Saffron Biology and Technology
Scoccianti V, Crinelli R, Tirillini B, Mancinelli V, Speranza A (2006) Uptake and toxicity of Cr(III) in celery seedlings. Chemosphere 64:1695–1703
Dursun AY, Uslu G, Cuci Y, Aksu Z (2003) Bioaccumulation of copper(II), lead(II) and chromium(VI) by growing Aspergillus niger. Process Biochem 38:1647–1651
Li B, Ma YB, Mclaughlin MJ, Kirby JK, Cozens G, Liu JF (2010) Influences of soil properties and leaching on copper toxicity to barley root elongation. Environ Toxicol Chem 29:835–842
Lund U, Fobian A (1991) Pollution of two soils by arsenic, chromium and copper, Denmark. Geoderma 49:83–103
Di Salvatore M, Carafa AM, Carratu G (2008) Assessment of heavy metals phytotoxicity using seed germination and root elongation tests: a comparison of two growth substrates. Chemosphere 73:1461–1464
Bao SD (2000) Analysis methods for soil agro-chemistry. China Agriculture Press, Beijing, pp 432–437
Sprague JB, Ramsay BA (1965) Lethal levels of mixed copper-zinc solutions for juvenile salmon. Fish Res Board Can 22:425–432
Cao Q, Hu QH, Khan S, Wang ZJ, Lin AJ, Du X, Zhu YG (2007) Wheat phytotoxicity from arsenic and cadmium separately and together in solution culture and in a calcareous soil. J Hazard Mater 148:377–382
ISO (1993) Soil quality-determination of the effects of pollutants on soil. Method for the measurement of inhibition of root growth, Geneva
Soudek P, Katrusakova A, Sedlacek L, Petrova S, Koci V, Marsik P, Griga M, Vanek T (2010) Effect of heavy metals on inhibition of root elongation in 23 cultivars of flax (Linum usitatissimum L.). Arch Environ Con Tox 59:194–203
Speir TW, van Schaik AP, Hunter LC, Ryburn JL, Percival HJ (2007) Attempts to derive EC50 values for heavy metals from land-applied Cu-Ni-, and Zn-spiked sewage sludge. Soil Biol Biochem 39:539–549
Kristen U (1996) Main features of basal cytoxicity: sites of toxic action and interaction in the pollen tube cell. ATLA Altern Lab Anim 24:429–434
Liu TF, Wang T, Sun C, Wang YM (2009) Single and joint toxicity of cypermethrin and copper on Chinese cabbage (Pakchoi) seeds. J Hazard Mater 163:344–348
Cao ZH, Hu ZY (2000) Copper contamination in paddy soils irrigated with wastewater. Chemosphere 41:3–6
Ministry of Health, People's Republic of China, method number, GB 3838–2002.
Ali NA, Ater M, Sunahara GI, Robidoux PY (2004) Phytotoxicity and bioaccumulation of copper and chromium using barley (Hordeum vulgare L.) in spiked artificial and natural forest soils. Ecotox Environ Safe 57:363–374
State Standard of the People's Republic of China, Environmental quality standards for soils, sd No. GB 15618–1995.
Apte AD, Tare V, Bose P (2006) Extent of oxidation of Cr(III) to Cr(VI) under various conditions pertaining to natural environment. J Hazard Mater 128:164–174
Tandy S, Healey JR, Nason MA, Williamson JC, Jones DL (2009) Heavy metal fractionation during the co-composting of biosolids, deinking paper fibre and green waste. Bioresour Technol 100:4220–4226
Huang YZ, Hu Y, Liu YX (2009) Combined toxicity of copper and cadmium to six rice genotypes (Oryza sativa L.). J Environ Sci-China 21:647–653
Jo HJ, Son J, Cho K, Jung J (2010) Combined effects of water quality parameters on mixture toxicity of copper and chromium toward Daphnia magna. Chemosphere 81:1301–1307
Sun YB, Zhou QX, Liu WT, An J, Xu ZQ, Wang L (2009) Joint effects of arsenic and cadmium on plant growth and metal bioaccumulation: a potential Cd-hyperaccumulator and As-excluder Bidens pilosa L. J Hazard Mater 165:1023–1028
Charles AL, Markich SJ, Ralph P (2006) Toxicity of uranium and copper individually and in combination to a tropical freshwater macrophyte (Lemna aequinoctialis). Chemosphere 62:1224–1233
Mendoza-Cozatl DG, Rangel-Gonzalez E, Moreno-Sanchez R (2006) Simultaneous Cd2+, Zn2+, and Pb2+ uptake and accumulation by photosynthetic Euglena gracilis. Arch Environ Con Tox 51:521–528
Fabrega JR, Jafvert CT, Li H, Lee LS (1998) Modeling short-term soil-water distribution of aromatic amines. Environ Sci Technol 32:2788–2794
Wong CK (1992) Effects of chromium, copper, nickel, and zinc on survival and feeding of the cladoceran Moina macrocopa. B Environ Contam Tox 49:593–599
Mittler R (2002) Oxidative stress, antioxidants and stress tolerance. Trends Plant Sci 7:405–410
Jones DL, Darrah PR (1994) Role of root derived organic-acids in the mobilization of nutrients from the rhizosphere. Plant Soil 166:247–257
Raspor PBM, Jamnik P (2000) The influence of chromium compounds on yeast physiology (a review). Acta Microbiol Immunol Hung 47:143–173
Xu RK, Xiao SC, Zhao AZ, Ji GL (2005) Effect of Cr(VI) anions on adsorption and desorption behavior of Cu(II) in the colloidal systems of two authentic variable charge soils. J Colloid Interf Sci 284:22–29
Li HY, Ji GL (1997) In: Yu TR (ed) Chemistry of variable charge soils. Oxford Univ, New York, p 64
Acknowledgments
The authors express their gratitude to Huang XY and Ding XY for their help during experimental setup, for Dr. Ma YB for his valuable comment on the manuscript. This study was supported by the National Department Public Benefit (Agriculture) Research Foundation (no. 2009030150–05) and the Innovative Research Team Program of Northwest A&F University.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wang, D., Liang, D., Wang, S. et al. Individual and Joint Toxicity Effects of Cu, Cr(III), and Cr(VI) on Pakchoi: A Comparison Between Solution and Soil Cultures. Biol Trace Elem Res 146, 116–123 (2012). https://doi.org/10.1007/s12011-011-9219-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12011-011-9219-2

