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Title: | Metallophytes of Serpentine and Calamine Soils - Their Unique Ecophysiology and Potential for Phytoremediation | Authors: | Wojcik, Magorzata Gonnelli, Cristina Selvi, Federico Dresler, Slawomir Rostanski, Adam VANGRONSVELD, Jaco |
Issue Date: | 2017 | Publisher: | ELSEVIER ACADEMIC PRESS INC | Source: | Advances in Botanical Research, 83, p. 1-42 | Abstract: | For years, metallophytes of both natural and human-influenced metalliferous soils have focussed considerable attention due to their unique appearance and ability to colonize often extremely harsh habitats. A majority of metal-contaminated areas comprise serpentine (ultramafic, rich in Ni, Cr and Co) and calamine (rich in Zn, Pb and Cd) soils hosting characteristic serpentine and calamine flora, which is the focus of this review. Through microevolution, the plants inhabiting metalliferous habitats have developed a range of intriguing adaptive traits, demonstrated as characteristic morphological, behavioural and physiological alterations that enable them to avoid and/or tolerate metal toxicity. The mechanisms responsible for protection of the plant cell from metals entering the protoplast as well as for detoxification of toxic metal ions inside the cell by chelation, vacuolar sequestration and exclusion from the protoplast are reviewed. These mechanisms have resulted in highly specialized plants able to hyperaccumulate or avoid metals in the shoots. Potential applications of both kinds of metallophytes in rehabilitation and phytoremediation of metal-polluted sites are briefly discussed. Moreover, other beneficial applications of metal-rich plant biomass are mentioned, e. g., as a bio-ore for precious metal recovery (phytomining, agromining), a by-product for eco-catalyst production or a natural source of micronutrients that are essential for human diet and health (biofortification). The need of active protection of metalliferous sites and conservation of metallophyte biodiversity is pointed out. | Notes: | [Wojcik, Magorzata; Dresler, Slawomir] Marie Curie Sklodowska Univ, Lublin, Poland. [Gonnelli, Cristina; Selvi, Federico] Univ Firenze, Florence, Italy. [Rostanski, Adam] Univ Silesia, Katowice, Poland. [Vangronsveld, Jaco] Hasselt Univ, Diepenbeek, Belgium. | Keywords: | Excluders; (Hyper)accumulators; Metal tolerance; Metalliferous soils; (Micro)evolutionary changes; Organic acids; Phytochelatins; Phytoextraction; Phytostabilization | Document URI: | http://hdl.handle.net/1942/25717 | ISSN: | 0065-2296 | e-ISSN: | 2162-5948 | DOI: | 10.1016/bs.abr.2016.12.002 | ISI #: | 000414255500002 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2018 |
Appears in Collections: | Research publications |
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wjcik2017.pdf Restricted Access | Published version | 741.82 kB | Adobe PDF | View/Open Request a copy |
CH0001_Wojcik_final.pdf | Peer-reviewed author version | 340.76 kB | Adobe PDF | View/Open |
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