Phytoremedial assessment of flora tolerant to heavy metals in the contaminated soils of an abandoned Pb mine in Central Portugal

Pratas, João; Favas, Paulo J.C.; D’Souza, Rohan; Varun, Mayank; Paul, Manoj S.

doi:10.1016/j.chemosphere.2012.09.079

Cited by 53 publications

(23 citation statements)

References 20 publications

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“…Other values for heavy metal content of dried plant material were (mg kg −1 ) as follows: Ag, 0.1–0.17; Co, 0.2–0.63; Cr, 0.42–1.6; Cu, 3.5–6.7; Ni, 0.65–5.2; Pb 3.37–54; and Zn 32–74 (Pratas et al . ).…”

Section: Structure and Physiologymentioning

confidence: 97%

Biological Flora of the British Isles: Ruscus aculeatus

Thomas

Mukassabi

2014

Journal of Ecology

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Summary1. This account presents information on all aspects of the biology of Ruscus aculeatus L. (Butcher's broom) that are relevant to understanding its ecological characteristics and behaviour. The main topics are presented within the standard framework of the Biological Flora of the British Isles: distribution, habitat, communities, responses to biotic factors, responses to environment, structure and physiology, phenology, floral and seed characters, herbivores and disease, history and conservation. 2. Ruscus aculeatus is a multistemmed monocotyledonous shrub with leaves functionally replaced by cladodes and photosynthetic stems. It is native to southern England primarily in dry shaded woodland and hedgerows (but widely planted elsewhere) often, but not exclusively, on base-rich soil. It is rarely abundant in any habitat, usually forming widely spread discrete clumps. 3. Ruscus aculeatus is remarkably shade tolerant and drought resistant with low water conductance and transpiration, and water storage in the cladodes. Yet unusually for a drought-tolerant stemphotosynthetic plant, it prefers shady environments. 4. The flowers have few if any pollinating mechanisms, low seed production and fruit/seed dispersal are largely ineffective, which may be a relict of its evolution in a tropical Tertiary climate. Population survival primarily depends upon vegetative spread from stout rhizomes, aided by the plant's general unpalatability. 5. Over-collecting for medicinal steroidal saponins has caused some population declines, particularly in eastern Europe, but it is otherwise facing few conservation problems.

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Section: Structure and Physiologymentioning

confidence: 97%

Biological Flora of the British Isles: Ruscus aculeatus

Thomas

Mukassabi

2014

Journal of Ecology

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“…The new updated and revised proposal of the threshold values considers a plant a candidate for a hyperaccumulator if its dry matter of aboveground tissue contains more than 100 mg/kg Se, Cd and Tl, 300 mg/kg Cu, Co, Cr, 1000 mg/kg of Ni and Pb, 3000 mg/kg Zn and 10 000mg/kg Mn ( Van der Ent et al, 2013a). In addition, Pratas et al (2013) proposed a 1 mg/kg threshold level for Ag.…”

Section: Characteristics Of Hyperaccumulatorsmentioning

confidence: 99%

Prospecting for hyperaccumulators of trace elements: a review

Krzciuk

Gałuszka

2014

Critical Reviews in Biotechnology

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Specific plant species that can take up and accumulate abnormally high concentrations of elements in their aboveground tissues are referred to as "hyperaccumulators". The use of this term is justified in the case of enormous element-binding capacity of plants growing in their natural habitats and showing no toxicity symptoms. An increasing interest in the study of hyperaccumulators results from their potential applications in environmental biotechnology (phytoremediation, phytomining) and their emerging role in nanotechnology. The highest number of plant species with confirmed hyperaccumulative properties has been reported for hyperaccumulators of nickel, cadmium, zinc, manganese, arsenic and selenium. More limited data exist for plants accumulating other elements, including common pollutants (chromium, lead and boron) or elements of commercial value, such as copper, gold and rare earth elements. Different approaches have been used for the study of hyperaccumulators - geobotanical, chemical, biochemical and genetic. The chemical approach is the most important in screening for new hyperaccumulators. This article presents and critically reviews current trends in new hyperaccumulator research, emphasizing analytical methodology that is applied in identification of new hyperaccumulators of trace elements and its future perspectives.

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“…mines, industrial zones is naturally high in a particular metal, native plants will often become adapted over time to the locally elevated levels [28][29][30] and metal toxicity issues do not generally arise. Successful establishment and colonization of several pioneer plant species tolerant to Pb/Zn mine spoils has also been demonstrated with tolerant plants including Phragmites australis, Vetiveria zizanioides, and Sesbania rostrata [31,92].…”

Section: Phytosociological Studiesmentioning

confidence: 99%

“…Native plants often become adapted to locally elevated levels of metals in soil at contaminated sites, e.g. mines and industrial zones [28][29][30] and metal toxicity issues do not generally arise. Many native, well adapted plants have been investigated and even used for heavy metal bioindicatoring and phytoremedial purposes including lemongrass and other wild grasses, vetiver, Sesbania, Avena, Crotalaria, Crinum asiaticum, Typha latifolia and Calotropis procera etc.…”

Section: Introductionmentioning

confidence: 99%