Special Issue "Metallophytes"
Deadline for manuscript submissions: closed (28 February 2021) | Viewed by 7798
Interests: ecology and evolution of ultramafic flora; plant–soil relationships; hyperaccumulators; agromining; phytoremediation; soil restoration
Metallophytes (i.e., plants able to survive on metal-rich soils) are botanical rarities. Through the evolution of different mechanisms for handling trace elements (‘metals’), some metallophytes are able to exclude metals from their aerial parts until a certain toxicity threshold is exceeded, whereas others have the ability to uptake and accumulate high concentrations of metals on their leaves. In hyperaccumulators, the metal foliar concentrations can be several orders of magnitude higher than normal plants growing on ‘normal’ soils. Metallophytes, either excluders or (hyper)accumulators, are interesting systems for the study of evolution, physiology and ecology of plants. Moreover, metallophytes are the basis for the phytoremediation, a suite of ecotechnological applications for the recovery of ‘metal’-polluted soils. During the last decade, there have been important advances in the understanding of physiological mechanisms of metal tolerance and accumulation, and new techniques are allowing the discovery of hyperaccumulators from biological collections and herbaria. Moreover, hyperaccumulators are being used in Albania, Greece, Malaysia, New Caledonia, and Spain to recover valuable metals (mainly Ni) in different phyto/agromining contexts.
This Special Issue on ‘Metallophytes’ in Plants welcomes research papers and reviews dedicated to the different aspects of metallophytes: reporting of new metallophyte species, ecophysiological aspects of tolerance, plant (micro)evolution on metal-rich substrates, application of metallophytes in phytoremediation or phytomining, etc. Papers dealing with non-model species, rare-earth hyperaccumulators or from low explored areas (South America, Africa) are specially welcomed.
Dr. Celestino Quintela-Sabarís
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