Phytodegradation Potential of <Emphasis Type="Italic">Erythrina crista-galli</Emphasis> L., Fabaceae,in Petroleum-Contaminated Soil |
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Authors: | Vanessa de Farias Leila Teresinha Maranho Eliane Carvalho de Vasconcelos Marco Aurélio da Silva Carvalho Filho Luiz Gustavo Lacerda Jayme Augusto Menegassi Azevedo Ashok Pandey Carlos Ricardo Soccol |
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Institution: | 1.Department of Biology Science,Universidade Positivo,Curitiba,Brazil;2.Program on Environmental Management,Universidade Positivo,Curitiba,Brazil;3.Environmental Biotechnology, Department of Chemical Engineering,Universidade Federal do Paraná,Curitiba,Brazil;4.National Institute for Interdisciplinary Science & Technology (NIST) (Formerly Regional Research Laboratory), CSIR,Trivandrum,India;5.Biotechnology Process, Department of Chemical Engineering,Universidade Federal do Paraná,Curitiba,Brazil |
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Abstract: | This work aimed at investigating both the tolerance and the phytodegradation potential of Erythrina crista-galli L. in petroleum-contaminated soil. It consisted in analyzing E. crista-galli germination, surviving, growth, and development when cultivated at different contaminant concentrations and pollutant degradation
rates. This specimen was selected because it presented a special behavior among others also exposed to petroleum in an accident
that occurred in the Araucaria region (south of Brazil), resulting in a four-million-liter oil spill. The experiment was carried
out in a greenhouse containing non-contaminated soil (NCS), vegetated contaminated soil (VCS), and non-vegetated contaminated
soil (NVCS) at the following petroleum concentrations: 25 g kg−1 (VCS-25), 50 g kg−1 (VCS-50), and 75 g kg−1 (VCS-75). After 60 days, the soil samples were analyzed by gas chromatography. Germination was more and more evident as higher
petroleum concentrations were observed. The surviving rates of groups NCS, VCS-25, VCS-50, and VCS-75 were 64%, 70%, 61%,
and 96%, respectively. The VCS group growth was reduced when compared to the control group (NCS). The individuals exposed
to petroleum pollution presented differences in the anatomic structure of their roots when compared to the NCS group. It was
observed that the petroleum degradation rate was higher for VCS group than for NVCS. E. crista-galli is potentially recommended for petroleum-contaminated soils because of its positive association in the presence of contamination. |
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Keywords: | Phytodegradation Petroleum Erythrina Root Fabaceae |
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