Phytostabilization of metal(loid)s by ten emergent macrophytes following a 90-day exposure to industrially contaminated groundwater.

Autor: Velasco-Arroyo B; International Research Center in Critical Raw Materials for Advanced Industrial Technologies (ICCRAM), University of Burgos, Centro de I+D+I, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain; Department of Biotechnology and Food Science, University of Burgos, Plaza Misael Bañuelos, s/n, 09001 Burgos, Spain. Electronic address: bvarroyo@ubu.es., Curiel-Alegre S; International Research Center in Critical Raw Materials for Advanced Industrial Technologies (ICCRAM), University of Burgos, Centro de I+D+I, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain; Research Group in Composting (UBUCOMP), University of Burgos, Faculty of Sciences, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain., Khan AHA; International Research Center in Critical Raw Materials for Advanced Industrial Technologies (ICCRAM), University of Burgos, Centro de I+D+I, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain., Rumbo C; International Research Center in Critical Raw Materials for Advanced Industrial Technologies (ICCRAM), University of Burgos, Centro de I+D+I, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain., Pérez-Alonso D; Research Group in Composting (UBUCOMP), University of Burgos, Faculty of Sciences, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain., Rad C; Research Group in Composting (UBUCOMP), University of Burgos, Faculty of Sciences, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain., De Wilde H; TAUW België nv, Dept. of Soil and Groundwater, Waaslandlaan 8A3, 9160 Lokeren, Belgium., Pérez-de-Mora A; TAUW GmbH, Dept. of Soil and Groundwater, Landsberger Str. 290, 80687 München, Germany., Barros R; International Research Center in Critical Raw Materials for Advanced Industrial Technologies (ICCRAM), University of Burgos, Centro de I+D+I, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain. Electronic address: rbarros@ubu.es.
Jazyk: angličtina
Zdroj: New biotechnology [N Biotechnol] 2024 Mar 25; Vol. 79, pp. 50-59. Date of Electronic Publication: 2023 Dec 19.
DOI: 10.1016/j.nbt.2023.12.003
Abstrakt: Better understanding of macrophyte tolerance under long exposure times in real environmental matrices is crucial for phytoremediation and phytoattenuation strategies for aquatic systems. The metal(loid) attenuation ability of 10 emergent macrophyte species (Carex riparia, Cyperus longus, Cyperus rotundus, Iris pseudacorus, Juncus effusus, Lythrum salicaria, Menta aquatica, Phragmites australis, Scirpus holoschoenus, and Typha angustifolia) was investigated using real groundwater from an industrial site, over a 90-day exposure period. A "phytobial" treatment was included, with 3 plant growth-promoting rhizobacterial strains. Plants exposed to the polluted water generally showed similar or reduced aerial biomass compared to the controls, except for C. riparia. This species, along with M. aquatica, exhibited improved biomass after bioaugmentation. Phytoremediation mechanisms accounted for more than 60% of As, Cd, Cu, Ni, and Pb removal, whilst abiotic mechanisms contributed to ∼80% removal of Fe and Zn. Concentrations of metal(loid)s in the roots were generally between 10-100 times higher than in the aerial parts. The macrophytes in this work can be considered "underground attenuators", more appropriate for rhizostabilization strategies, especially L. salicaria, M. aquatica, S. holoschoenus, and T. angustifolia. For I. pseudacorus, C. longus, and C. riparia; harvesting the aerial parts could be a complementary phytoextraction approach to further remove Pb and Zn. Of all the plants, S. holoschoenus showed the best balance between biomass production and uptake of multiple metal(loid)s. Results also suggest that multiple phytostrategies may be possible for the same plant depending on the final remedial aim. Phytobial approaches need to be further assessed for each macrophyte species.
Competing Interests: Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Rocio Barros reports financial support was provided by European Union’s Horizon 2020 research and innovation program. Sandra Curiel-Alegre reports financial support was provided by Junta de Castilla y León.
(Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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