Hyperaccumulators of metal and metalloid trace elements: Facts and fiction
Reads0
Chats0
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
Phytoremediation as an approach to clean up contaminated soil, including petroleum product contamination
Journal ArticleDOI
Variation in the ionome of tropical ‘metal crops’ in response to soil potassium availability
Philip Nti Nkrumah,Guillaume Echevarria,Peter D. Erskine,Rufus L. Chaney,Sukaibin Sumail,Antony van der Ent,Antony van der Ent +6 more
TL;DR: In this paper, the response to soil K availability in relation to uptake of K and other elements in the roots and shoots of P. rufuschaneyi and R. cf. bengalensis was investigated.
Journal ArticleDOI
Quantification of nickel and cobalt mobility and accumulation via the phloem in the hyperaccumulator Noccaea caerulescens (Brassicaceae)
Teng-Hao-Bo Deng,Jie-Qian Chen,Ke-Rui Geng,Antony van der Ent,Ye-Tao Tang,Dian Wen,Xu Wang,Lei Li,Rui-Ying Du,Jean Louis Morel,Rongliang Qiu,Rongliang Qiu +11 more
TL;DR: In this paper, the authors quantified the mobility and accumulation of Ni and Co via the phloem in the model hyperaccumulator Noccaea caerulescens.
Journal ArticleDOI
Combining phytoremediation and biorefinery: Metal extraction from lead contaminated Miscanthus during pretreatment using the ionoSolv process
TL;DR: In this paper, the potential of perennial bioenergy Miscanthus feedstock grown on heavy metal contaminated land was evaluated for the production of clean renewable energy, chemicals, and recovered metals.
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?