Selenite resistant rhizobacteria stimulate SeO3
2– phytoextraction by Brassica juncea in bioaugmented water-filtering artificial beds |
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Authors: | Silvia Lampis Anita Ferrari A Cristina F Cunha-Queda Paula Alvarenga Simona Di Gregorio Giovanni Vallini |
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Institution: | 1. Department of Biotechnology, Laboratories of Microbial Biotechnology and Environmental Microbiology, University of Verona, Strada Le Grazie 15-Ca’ Vignal, I-37134, Verona, Italy 2. Departamento de Química Agrícola e Ambiental, Instituto Superior de Agronomia, Universidade Técnica de Lisboa (UTL), Tapada da Ajuda, P-Lisboa, 1349-017, Portugal 3. Departamento de Ciéncias do Ambiente, Escola Superior Agrária de Beja, Rua Pedro Soares, Apartado 158, P-Beja, 7801-902, Portugal 4. Department of Biology, University of Pisa, Via Luca Ghini 5, I-56126, Pisa, Italy
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Abstract: | Background, aim, and scope Selenium is a trace metalloid of global environmental concern. The boundary among its essentiality, deficiency, and toxicity
is narrow and mainly depends on the chemical forms and concentrations in which this element occurs. Different plant species—including
Brassica juncea—have been shown to play a significant role in Se removal from soil as well as water bodies. Furthermore, the interactions
between such plants, showing natural capabilities of metal uptake and their rhizospheric microbial communities, might be exploited
to increase both Se scavenging and vegetable biomass production in order to improve the whole phytoextraction efficiency.
The aim of the present study was to evaluate the capability of selenite removal of B. juncea grown in hydroponic conditions on artificially spiked effluents. To optimize phytoextraction efficiency, interactions between
B. juncea and rhizobacteria were designedly elicited. |
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