Journal article

Facultative hyperaccumulation of heavy metals and metalloids

A Joseph Pollard, Roger D Reeves, Alan JM Baker

PLANT SCIENCE | ELSEVIER IRELAND LTD | Published : 2014

Abstract

Approximately 500 species of plants are known to hyperaccumulate heavy metals and metalloids. The majority are obligate metallophytes, species that are restricted to metalliferous soils. However, a smaller but increasing list of plants are "facultative hyperaccumulators" that hyperaccumulate heavy metals when occurring on metalliferous soils, yet also occur commonly on normal, non-metalliferous soils. This paper reviews the biology of facultative hyperaccumulators and the opportunities they provide for ecological and evolutionary research. The existence of facultative hyperaccumulator populations across a wide edaphic range allows intraspecific comparisons of tolerance and uptake physiology...

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University of Melbourne Researchers