Influence of soil texture on nutrients and potentially hazardous elements in Eremanthus erythropappus.
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Data
2015
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Resumo
Understanding the factors that control uptake rates and allocation of chemical elements among plant
organs is a fundamental prerequisite to improve phytostabilization techniques of hazardous elements in
contaminated areas. The present study shows evidence that different substrate textures (coarse and fine
laterite) do not significantly change the partitioning of root and shoot dry biomass and with few
exceptions, do not significantly affect the final average concentration of elements in Eremanthus
erythropappus, but change the root:shoot allocation of both essential nutrients and elements potentially
toxic to biota. Growth on coarse laterite resulted in significant higher K (30%), Mg (34%), P (25%), S (32%),
Cu (58%), and Na (43%) concentrations in roots and lower Cd concentration (29%). In shoots, coarse
laterite led to reduction in K, Fe, Al, and Cr and increase in Na and Sr concentrations. Changes in element
allocation could be, in part, a result of differences in the water availability of substrates. Matric potential in
coarse laterite was significantly lower in at least 47% of the days analyzed throughout the year. Changes in
element phytoextraction or phytostabilization potential could influence the efficiency of rehabilitation
projects in areas degraded by mining activities.
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Matric potential, Crushed laterite, Phytoremediation, Element allocation
Citação
FIGUEIREDO, M. A.; LEITE, M. G. P.; KOZOVITZ, A. R. Influence of soil texture on nutrients and potentially hazardous elements in Eremanthus erythropappus. International Journal of Phytoremediation, v. 18, n. 5, p. 487-493, 2016. Disponível em: <http://www.tandfonline.com/doi/abs/10.1080/15226514.2015.1115961?journalCode=bijp20>. Acesso em: 07 jul. 2017.