Título del libro: Invasive Species: Ecology, Impacts, And Potential Uses
Título del capítulo: Half of Mexico's invasive plant species may be useful for heavy metal phytoremediation
PATRICIA MUSSALI GALANTE; EFRAIN TOVAR SANCHEZ;
Autores externos:
Idioma:
Año de publicación:
2020
Palabras clave:
Contamination; Heavy metals; Invasive species; Phytoremediation
Resumen:
The exploitation and utilization of metallurgical resources promote the production of dangerous residues, known as mine tailings. These residues contain potentially toxic elements (PTE) that produce alterations and adverse effects in the environment affecting the surrounding biota. Heavy metals (HM) may induce different alterations in organisms (e.g., genetic, metabolic, physiological, and morphological). Plants are possibly the biological group most affected by the environmental presence of HM because they directly depend on the substrate for their limited mobility. However, several plants have different mechanisms that help them to tolerate, neutralize, or counteract the toxic effects of HM, suggesting that some plant species can establish themselves in contaminated sites without suffering modifications that affect their development. Within these species, the HM hyperaccumulator plants have been used in diverse phytoremediation processes with promising results. Worldwide about 450 HM hyperaccumulator plant species have been reported, many of which have an invasive species status. In particular, in Mexico, 215 invasive plant species were reported, of which approximately 51% were documented in heavy metals bioaccumulation studies. Although invasive species have been considered a significant cause of biodiversity loss, causing untoward effects on resident communities and ecosystem functioning, these plants have great potential as an alternative for phytoremediation of mine tailings containing complex mixtures of bioavailable HM. Phytoremediation offers owners and managers of metal-contaminated sites an innovative and cost-effective option to address environmental contaminants. The use of plants to restore or stabilize contaminated sites, collectively known as phytoremediation, takes advantage of the natural abilities of plants to take up, accumulate, store, or degrade organic and inorganic substances. This chapter presents an updated list of invasive plant species that are considered bioaccumulators and hyperaccumulators of HM. We found that 110 invasive species (51%) were documented to contain the bioaccumulation of HM, principally in leaves, shoots and stems. Of this total, 29% have been proposed as hyperaccumulators. Pontederiaceae, Asteraceae and Fabaceae were the plant families most representatives by the number of species that bioaccumulate HM. Also, we point out which of these species present the highest values for HM extraction, also, if some of these species show an affinity for specific metals. Additionally, we document invasive species that have the potential for their use as biosensors in HM contaminated sites. © 2020 Nova Science Publishers, Inc.
Entidades citadas de la UNAM:
ISBN:
9781536178906
Editorial:
Nova Science Publishers, Inc. Nombre de la publicación:
Half of Mexico's invasive plant species may be useful for heavy metal phytoremediation
Página inicial:
247
Página final:
309
Tipo de producto:
Capítulo de un Libro
