Hyperaccumulators of metal and metalloid trace elements: Facts and fiction
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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
Thallium accumulation and distribution in Silene latifolia (Caryophyllaceae) grown in hydroponics
Amelia Corzo Remigio,Philip Nti Nkrumah,Filip Pošćić,Mansour Edraki,Alan J. M. Baker,A. van der Ent +5 more
TL;DR: In this paper , the authors investigated the nature of Tl tolerance and accumulation in Silene latifolia , which has so far only been reported from field-collected samples.
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Agromining from secondary resources: recovery of nickel and other valuable elements from waste materials
Alice Tognacchini,Aurelien Buteri,Gaylord Erwan Machinet,Jean Louis Morel,Markus Puschenreiter,Ramez F. Saad,Marie-Odile Simonnot +6 more
TL;DR: In this article, a new approach to metals recycling from waste materials has been investigated: agromining with hyperaccumulator plants on waste-derived substrates, which can isolate specific metals from multi-metal waste matrices and bioconcentrate target metals in their biomass.
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Phytoremediation of Potentially Toxic Elements from Contaminated Saline Soils Using Salvadora persica L.: Seasonal Evaluation
Amtul Mujeeb,Zainul Abideen,Irfan Aziz,Nadia Sharif,M. Iftikhar Hussain,Asad Sarwar Qureshi,Hsi-Hsien Yang +6 more
TL;DR: Salmanora persica L, a medicinally important woody crop of marginal coasts, was evaluated for the accumulation of metal pollutants (viz. Fe, Mn, Cu, Pb, Zn, and Cr) from three coastal areas of Karachi on a seasonal basis as mentioned in this paper .
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Integrating Ecosystem Services in Historically Polluted Areas: Bioremediation Techniques for Soils Contaminated by Heavy Metals
TL;DR: In this article, the authors proposed to use bioaccumulative plants as an environmental-friendly alternative to the traditional physicochemical methods, being a sustainable method with a great potential in terms of environmental protection and cost management.
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Metal bioaccumulation alleviates the negative effects of herbivory on plant growth.
TL;DR: In this paper, the authors explored the capacity of natural metal accumulation in a tropical tree species, Eremanthus erythropappus (Asteraceae), and the effects of such bioaccumulation on plant responses to herbivory.
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
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Journal ArticleDOI
A fern that hyperaccumulates arsenic
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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
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Book
Phytoremediation of toxic metals : using plants to clean up the environment
Ilya Raskin,Burt D. Ensley +1 more
TL;DR: Why Use Phytoremediation?