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
Rapid Assessment of Plant Diversity in Ultramafic Soil Environments in Zambales and Surigao del Norte, Philippines
Jessa P. Ata,Amelita C. Luna,Crusty E. Tinio,Marilyn O. Quimado,Lerma San Jose Maldia,W. P. Abasolo,Edwino S. Fernando +6 more
TL;DR: In this article, the vegetation composition and diversity in two heavy metal sites with distinct climatic and edaphic environments in the Philippines, Zambales, and Surigao del Norte were investigated.
Journal ArticleDOI
Contrasting phosphorus (P) accumulation in response to soil P availability in ‘metal crops’ from P-impoverished soils
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: The results show that root and shoot P accumulation increased markedly as soil P availability increased by 80-fold in P. rufuschaneyi, whereas R. bengalensis did not increase as strongly to P supply, despite a 135-fold increase in soil solution P.
Book ChapterDOI
Role of microbes in grass-based phytoremediation
TL;DR: In this paper, a new phytomanagement concept is given emphasis on the selection of high biomass and biofuel producing, easily propagated, low metal accumulating, and deep-rooted perennial grasses.
Journal ArticleDOI
Phytomining of valuable metals: status and prospective-a review
TL;DR: Precious metals accumulated to high concentration spread across tailing dumps, mineralised soil and at many metal-processing facilities across the African continent as discussed by the authors, currently about 71% of the wor...
Journal ArticleDOI
The Bioconcentration and the Translocation of Heavy Metals in Recently Consumed Salicornia ramosissima J. Woods in Highly Contaminated Estuary Marshes and Its Food Risk
Israel Sanjosé,Francisco Navarro-Roldán,Yina Montero,Sara Ramírez-Acosta,Francisco Javier Jiménez-Nieva,María Dolores Infante-Izquierdo,Alejandro Polo-Ávila,Adolfo F. Muñoz-Rodríguez +7 more
TL;DR: In this paper , Salicornia ramosissima J. Woods can accumulate Cd, As, and Pb in its leaves so its consumption should be limited to plants that grow in soils free of these 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?