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Publication
The tolerance of Eucalyptus globulus to soil contamination with arsenic
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Advisor(s)
Abstract(s)
The contamination of abandoned mining areas is a problem worldwide that needs urgent
attention. Phytoremediation emerges as a successful method to extract different contaminants
from the soil. In this context, Eucalyptus globulus plants growing in soils artificial contaminated with
arsenic (As) were used to access its phytoremediation capabilities. The effects of As on photosynthetic
performance were monitored through different physiological parameters, whereas the uptake and
translocation of As and the putative effects on calcium, iron, potassium, and zinc levels on plants
were evaluated by X-ray fluorescence analysis. Root system is the major accumulator organ, while
the translocation to the above-ground organs is poor. In the end of the experiment, the root biomass
of plants treated with 200 g As mL1 is 27% and 49.7% lower than equivalent biomass from plants
treated with 100 g As mL1 and control plants, respectively. Each plant can accumulate 8.19 and
8.91 mg As after a 6-month period, when submitted to 100 As and 200 As, respectively. It seems to
exist an antagonistic effect of As on Zn root uptake by E. globulus. In general, the tested concentrations
do not influence negatively plant metabolism, indicating that this species is suitable for plantation in
contaminated areas
Description
Keywords
arsenic toxicity biomass production Eucalyptus globulus phytoremediation photosynthesis tolerance
Pedagogical Context
Citation
Reboredo, F.H.; Pelica, J.; Lidon, F.C.; Pessoa, M.F.; Silva, M.M.; Guerra, M.; Leitão, R.; Ramalho, J.C. The Tolerance of Eucalyptus globulus to Soil Contamination with Arsenic. Plants 2021, 10, 627
Publisher
MDPI