Hyperaccumulators of metal and metalloid trace elements: Facts and fiction
Abstract:
Plants that accumulate metal and metalloid trace elements to extraordinarily high concentrations in their living biomass have inspired much research worldwide during the last decades. Hyperaccumulators have been recorded and experimentally confirmed for elements such as nickel, zinc, cadmium, manganese, arsenic and selenium. However, to date, hyperaccumulation of lead, copper, cobalt, chromium and thallium remain largely unconfirmed. Recent uses of the term in relation to rare-earth elements require critical evaluation. Since the mid-1970s the term ‘hyperaccumulator’ has been used millions of times by thousands of people, with varying degrees of precision, aptness and understanding that have not always corresponded with the views of the originators of the terminology and of the present authors. There is therefore a need to clarify the circumstances in which the term ‘hyperaccumulator’ is appropriate and to set out the conditions that should be met when the terms are used. We outline here the main considerations for establishing metal or metalloid hyperaccumulation status of plants, (re)define some of the terminology and note potential pitfalls. Unambiguous communication will require the international scientific community to adopt standard terminology and methods for confirming the reliability of analytical data in relation to metal and metalloid hyperaccumulators.read more
Citations
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Journal ArticleDOI
Improving nickel phytoextraction by co-cropping hyperaccumulator plants inoculated by plant growth promoting rhizobacteria
Alexis Durand,Alexis Durand,Séverine Piutti,Séverine Piutti,Marie Rue,Marie Rue,Jean Louis Morel,Jean Louis Morel,Guillaume Echevarria,Guillaume Echevarria,Emile Benizri,Emile Benizri +11 more
TL;DR: The combination of the hyperaccumulator plants N. tymphaea inoculated by one of the two PGPR strains (strain NB24), isolated from the rhizosphere of this mixed cover, seemed to be an interesting option for an efficient Ni phytoextraction to be tested in the field.
Journal ArticleDOI
Biogeochemistry of uranium in the soil-plant and water-plant systems in an old uranium mine.
TL;DR: In this paper, the authors highlight the uranium (U) concentrations in water-soil-plant matrices and the efficiency considering a heterogeneous assemblage of terrestrial and aquatic native plant species to act as the biomonitor and phytoremediator for environmental U-contamination in the Sevilha mine (uraniferous region of Beiras, Central Portugal).
Journal ArticleDOI
Accumulation and phytoremediation of Pb, Zn, and Ag by plants growing on Koshk lead–zinc mining area, Iran
TL;DR: In this paper, the authors investigated the extent of metal accumulation by plants colonizing a mining area in Yazd Province in Central Iran and investigated the suitability of these plants for phytoextraction and phytostabilization as two potential phytoremediation strategies.
Journal ArticleDOI
Recent advances in LIBS and XRF for the analysis of plants
Gabriel Gustinelli Arantes de Carvalho,Marcelo Braga Bueno Guerra,Andressa Adame,Cassiana Seimi Nomura,Pedro Vitoriano de Oliveira,Hudson Wallace Pereira de Carvalho,Dário Santos,Lidiane Cristina Nunes,Francisco José Krug +8 more
TL;DR: The ability to provide a fast and multielemental analytical response directly from a solid sample makes both laser-induced breakdown spectroscopy (LIBS) and X-ray fluorescence spectrometry (XRF) very versatile tools for plant nutrition diagnosis as mentioned in this paper.
Journal ArticleDOI
Phenotyping 60 populations of Noccaea caerulescens provides a broader knowledge of variation in traits of interest for phytoextraction
Thibault Sterckeman,Thibault Sterckeman,Yannick Cazes,Yannick Cazes,Cédric Gonneau,Cédric Gonneau,Catherine Sirguey,Catherine Sirguey +7 more
TL;DR: The high natural variability of N. caerulescens’ traits and its accumulation potential could be exploited for the production of phytoextraction cultivars.
References
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Terrestrial higher plants which hyperaccumulate metallic elements. a review of their distribution, ecology and phytochemistry
TL;DR: Phytochemical studies suggest that hyperaccumulation is closely linked to the mechanism of metal tolerance involved in the successful colonization of metalliferous and otherwise phytotoxic soils.
Journal ArticleDOI
Accumulators and excluders ?strategies in the response of plants to heavy metals
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Journal ArticleDOI
A fern that hyperaccumulates arsenic
TL;DR: A hardy, versatile, fast-growing plant that helps to remove arsenic from contaminated soils.
Journal ArticleDOI
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Martin R. Broadley,Philip J. White,John P. Hammond,Ivan Zelko,Ivan Zelko,Alexander Lux,Alexander Lux +6 more
TL;DR: The dominant fluxes of Zn in the soil-root-shoot continuum are described, including Zn inputs to soils, the plant availability of soluble Zn(2+) at the root surface, and plant uptake and accumulation of ZN.
Book
Phytoremediation of toxic metals : using plants to clean up the environment
Ilya Raskin,Burt D. Ensley +1 more
TL;DR: Why Use Phytoremediation?