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Artículo

Bioaugmentation with PGP-trace element tolerant bacterial consortia affects Pb uptake by Helianthus annuus grown on trace element polluted military soils

Saran, AnabelIcon ; Imperato, V.; Fernandez, L.; Vannucchi, F.; Steffanie, N. M.; d'Haen, J.; Merini, Luciano JoseIcon ; Vangronsveld, Jaco; Thijs, Sofie
Fecha de publicación: 08/2020
Editorial: Taylor & Francis
Revista: International Journal of Phytoremediation
ISSN: 1522-6514
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Bioremediación, Diagnóstico Biotecnológico en Gestión Medioambiental

Resumen

In this study, we sought to compose consortia of plant growth-promoting (PGP) and trace element tolerant bacteria, to improve plant growth and inhibit uptake and translocation of trace elements, eventually allowing the cultivation of profitmaking crops on trace elements polluted soils, reducing the risks of entrance of these elements into the food chain. Sunflower (Helianthus annuus L.) was grown on two polluted military soils (MS1 and MS2) in greenhouse microcosms and inoculated with three different bacterial consortia (C1, C2, C3). Growth and physiological status of the plants were unaffected during the experiment with the inoculation. After 2months, plants were harvested. Consortium C2 and C3 decreased Pb shoot bioaccumulation by respectively 80–85% when plants were grown in the MS1 and even to concentrations below detection limit in plants grown in MS2. Differences in uptake and (sub)cellular localization of Pb and Cd in selected bacterial isolates were investigated in vitro by TEM-EDX. Pb absorption was observed by Bacillus wiedmanni ST29 and Bacillus paramycoides ST9 cultures. While adsorption at the bacterial cell wall was observed by Bacillus paramycoides ST9 and retention in the extracellular matrix by Cellulosimicrobium cellulans ST54.
Palabras clave: COMMERCIAL CROP , INOCULATION , POLLUTED SOILS
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/174952
URL: https://www.tandfonline.com/doi/full/10.1080/15226514.2020.1805408
DOI: http://dx.doi.org/10.1080/15226514.2020.1805408
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Articulos(CCT - PATAGONIA CONFLUENCIA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA CONFLUENCIA
Citación
Saran, Anabel; Imperato, V.; Fernandez, L.; Vannucchi, F.; Steffanie, N. M.; et al.; Bioaugmentation with PGP-trace element tolerant bacterial consortia affects Pb uptake by Helianthus annuus grown on trace element polluted military soils; Taylor & Francis; International Journal of Phytoremediation; 23; 2; 8-2020; 202-211
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