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
More filters
Journal ArticleDOI
Cobalt hyperaccumulation in Rinorea cf. bengalensis (Violaceae) from Sabah: accumulation potential and tissue and cellular-level distribution of cobalt
Adrian L. D. Paul,Philip Nti Nkrumah,Guillaume Echevarria,Peter D. Erskine,Rufus L. Chaney,Kathryn Spiers,Sukaibin Sumail,Antony van der Ent,Antony van der Ent +8 more
TL;DR: In this article, the authors investigated the cobalt accumulation potential of Rinorea cf. bengalensis in relation to nickel concentrations in soils and the subsequent tissue and cellular-level distributions of cobalt, nickel and major cations.
Book ChapterDOI
Biotechnological Strategies for Remediation of Toxic Metal(loid)s from Environment
TL;DR: Present review aims to provide a succinct overview of potential biotechnological strategies using a vast array of biological materials, especially bacteria, fungi, algae, yeasts, and higher plants for metal(loid)s remediation.
Dissertation
Surface impacts of gold mining activities on the Kromdraai/Koekemoerspruit : a situation analysis
Journal ArticleDOI
The X-ray fluorescence screening of multiple elements in herbarium specimens from the Neotropical region reveals new records of metal accumulation in plants
Célestine Belloeil,Pierre Jouannais,Charles Malfaisan,Rolando Reyes Fernández,Séverine Lopez,Dulce Montserrat Navarrete Gutiérrez,Dulce Montserrat Navarrete Gutiérrez,Swann Maeder-Pras,Paola Villanueva,Romane Tisserand,Mélina Gallopin,Dubiel Alfonso-Gonzalez,Ilsa M Fuentes Marrero,Serge Muller,Vanessa R. Invernón,Yohan Pillon,Guillaume Echevarria,Guillaume Echevarria,Rosalina Berazaín Iturralde,Sylvain Merlot +19 more
TL;DR: In this paper, the authors used X-ray fluorescence technology to analyze metal concentration in a wide diversity of species of the Neotropical flora that was not extensively investigated so far.
Journal ArticleDOI
Suitability of Indian mustard genotypes for phytoremediation of mercury-contaminated sites
Mohd Kafeel Ahmad Ansari,Mohd Kafeel Ahmad Ansari,Altaf Ahmad,Shahid Umar,Muhammad Iqbal,Munir Hussain Zia,Azamal Husen,Gary Owens +7 more
TL;DR: Genotype Pusa Jai Kisan was identified as the most Hg-tolerant genotype, and seems to be quite suitable for use as a viable candidate for phytoremediation of H g-contaminated sites.
References
More filters
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
TL;DR: In this paper, two basic strategies of plant response are suggested, accumulators and excluders, which do not generally suppress metal uptake but result in internal detoxification, and indicators are seen as a further mode of response where proportional relationships exist between metal levels in the soil, uptake and accumulation in plant parts.
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
Zinc in plants
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?