This paper provides an overview of the variety of potential mechanisms that may be involved in the detoxification and tolerance to heavy metals at the cellular level, mainly in relation to Cu, Cd, Ni, and Zn since these have been the most widely studied.
Plants possess a range of potential cellular mechanisms that may be involved in the detoxification of heavy metals and thus tolerance to metal stress. These include roles for the following: for
Cellular mechanisms of heavy metals accumulation, detoxification and tolerance in hyperaccumulating plants Chapter (PDF Available) · January 2018 with 123 Reads Export this citation
Heavy metals, such as cobalt, copper, manganese, molybdenum, and zinc, are essential in trace amounts for growth by plants and other living organisms. However, in excessive amounts these heavy metals have deleterious effects. Like other organisms, plants possess a variety of detoxification mechanisms to counter the harmful effects of heavy metals.
Heavy metals such as Cu and Zn are essential for normal plant growth, although elevated concentrations of both essential and non-essential metals can result in growth inhibition and toxicity symptoms. Plants possess a range of potential cellular mechanisms that may be involved in the detoxification
Various mechanisms potentially involved in metal tolerance have been characterized in ectomycorrhizal fungi and can be described as extracellular (chelation and cell-wall binding) or intracellular (binding to nonprotein thiols and transport into intracellular compartments) detoxification mechanisms.
Plants have diverse mechanisms for metal detoxification, enabling them to tolerate heavy metal stress. The defense systems against heavy metal stress include mycorrhizae, cellular exudates, plasma membrane, heat shock proteins, phytochelatins (PCs), metallothioneins (MTs), …
Molecular mechanism of heavy metal toxicity and tolerance in plants: central role of glutathione in detoxification of reactive oxygen species and methylglyoxal and in heavy metal chelation. J. Bot. 2012 1–37; Hossain Z., Hajika M., Komatsu S. (2012b). Comparative proteome analysis of high and low cadmium accumulating soybeans under cadmium
Cellular mechanisms for heavy metal detoxification and tolerance. Cellular mechanisms for heavy metal detoxification and tolerance (pp. 1-11) J.L. Hall Cite this Item xml. Molecular and physiological approaches to maize improvement for drought tolerance. Molecular and physiological approaches to maize improvement for drought tolerance
It possesses various ranges of potential cellular mechanisms that may be involved in detoxification of heavy metals and thus increases its tolerance to heavy metal stress, mainly by producing organic acids and phytochelatins (PCs). These components help in repairing stress damaged proteins and compartmentalisation of metals to vacuoles.
There is some evidence that subcellular distribution and chemical forms of heavy metal may be associated with metal tolerance and detoxification in plants. Ramos et al. observed that in lettuce most of Cd was present in the cell wall fraction, and similar subcellular distribution pattern has …
Plants possess a range of potential cellular mechanisms that may be involved in the detoxification of heavy metals and thus tolerance to metal stress. Metal toxicity causes multiple direct and indirect effects in plants that concern practically all physiological functions.
Plants have a range of potential mechanisms at the cellular level that might be involved in the detoxification and thus tolerance to heavy metal stress (Hall 2002). These mechanisms can be used by both excluders and hyperaccumulators, although the …
Electron microscopy (EM) techniques enable identification of the main accumulations of lead (Pb) in cells and cellular organelles and observations of changes in cell ultrastructure. Although there is extensive literature relating to studies on the influence of heavy metals on plants, Pb tolerance strategies of plants have not yet been fully explained.