Temporal Variability of Metal Uptake in Different Cell Compartments in Mosses

Fernández, J.Á.; Pérez-Llamazares, Alicia; Carballeira, A.; Aboal, J.R.

doi:10.1007/s11270-013-1481-9

Cited by 17 publications

(6 citation statements)

References 25 publications

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“…Pollutants may be located in different cell compartments (intercellular, extracellular, intracellular, and particulate), which will respond differently from and independently of the presence of contaminants [37,38]. The concentrations in each compartment will be determined by the nature of the pollutant (each source of pollution may emit the metals in different chemical forms and the metals may be linked or not to different particles), as well as by the biological processes that occur within the moss and by environmental conditions [39]. Thus, the bioavailability of metal to moss will differ depending on its location in the cell.…”

Section: Resultsmentioning

confidence: 99%

Levels of Antioxidant Compound Glutathione in Moss from Industrial Areas

et al. 2018

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Plants possess a wide range of cellular mechanisms that help them tolerate potentially toxic substances. Several studies that were carried out under laboratory conditions have demonstrated that the antioxidant compound glutathione plays a role in enabling mosses to tolerate high levels of heavy metals without toxic effects. However, until now, the antioxidant levels have not been studied in mosses under field conditions. In this study, we aimed to clarify the antioxidant concentrations of glutathione in the terrestrial moss Pseudoscleropodium purum growing in industrial environments characterised by high atmospheric levels of Cd, Ni, and Pb, and to evaluate the potential use of the compound as a biomarker. The results indicated the existence of a glutathione threshold response, which was significantly correlated with the metal toxicity and which may be influenced by metal bioavailability. Although future studies are needed to strengthen the findings, the present study suggests that total concentration of glutathione in P. purum could therefore be used as a biomarker in air pollution biomonitoring studies, provided that metal bioavailability is taken into account.

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Section: Resultsmentioning

confidence: 99%

Levels of Antioxidant Compound Glutathione in Moss from Industrial Areas

et al. 2018

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“…The difference of Zn concentrations between mosses and lichens could depend on the uptake mechanism of Zn epiphytic mosses and lichens, and the higher temperature and light-stimulated in the gap center would promote the uptake of Zn in some lichens [44]. Certainly, Cu and Zn are two microelements necessary for plant growth and reproduction, and the differences in physiological requirements for particular elements between epiphytic mosses and lichens could explain the differential response of heavy metal concentrations in epiphytic mosses and lichens to gap position [45,46].…”

Section: Discussionmentioning

confidence: 99%

Effect of Gap Position on the Heavy Metal Contents of Epiphytic Mosses and Lichens on the Fallen Logs and Standing Trees in an Alpine Forest

Wang

Yang

et al. 2018

Forests

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To understand the role of the forest gaps and epiphytic mosses and lichens in the heavy metal cycles of forest ecosystems, the biomass, concentration, and storage of Cd, Pb, Cu, and Zn in epiphytic mosses and lichens on fallen logs and standing trees from the gap center to the closed canopy of an alpine forest ecosystem on the eastern Tibetan Plateau were investigated. Mosses were the dominant epiphytes on fallen logs and standing trees and contribute 82.1-95.1% of total epiphyte biomass in the alpine forest. A significantly higher biomass of epiphytic mosses and lichens was observed at the gap edge. The heavy metals concentration in mosses and lichens on fallen logs and standing trees varied widely with gap positions. Lower concentrations of Cd, Cu, and Pb were found in the mosses and lichens under the closed canopy, higher concentrations of Cd and Pb were detected in the mosses and lichens at the gap edge, and higher concentrations of Cu were found at the gap center. A significant difference in Zn concentration was observed between the mosses and lichens. No significant differences in Pb or Zn concentrations were observed in the mosses and lichens between the fallen log and standing tree substrates. Furthermore, the epiphytic mosses and lichens at the gap edge accumulated more Cd, Pb, and Cu, whereas the epiphytic lichens on the fallen logs and large shrubs at the gap center accumulated more Zn. In conclusion, gap regeneration accelerates the cycling of heavy metals in alpine forest ecosystems by promoting the growth of epiphytic mosses and lichens on fallen logs and standing trees at gap edges and increasing the concentration of heavy metals in these plants.

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“…Biological responses can be considered more representative than data supplied by chemical or physical detectors, as they are spatially and temporally contained; moreover, they allow estimating both the levels of pollutants and, even more importantly, the impact on biological receptors. Thus, analyses on organisms collected from polluted sites are fundamental to obtain quantitative data about the presence of each specific metal, including Cd [ 139 ].…”

Section: Charophytes and Bryophytes: Application Potentialmentioning

confidence: 99%

Responses to Cadmium in Early-Diverging Streptophytes (Charophytes and Bryophytes): Current Views and Potential Applications

Bellini

Betti

Toppi

2021

Plants

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Several transition metals are essential for plant growth and development, as they are involved in various fundamental metabolic functions. By contrast, cadmium (Cd) is a metal that can prove extremely toxic for plants and other organisms in a dose-dependent manner. Charophytes and bryophytes are early-diverging streptophytes widely employed for biomonitoring purposes, as they are able to cope with high concentrations of toxic metal(loid)s without showing any apparent heavy damage. In this review, we will deal with different mechanisms that charophytes and bryophytes have evolved to respond to Cd at a cellular level. Particular attention will be addressed to strategies involving Cd vacuolar sequestration and cell wall immobilization, focusing on specific mechanisms that help achieve detoxification. Understanding the effects of metal(loid) pollution and accumulation on the morpho-physiological traits of charophytes and bryophytes can be in fact fundamental for optimizing their use as phytomonitors and/or phytoremediators.

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Temporal Variability of Metal Uptake in Different Cell Compartments in Mosses

Cited by 17 publications

References 25 publications

Levels of Antioxidant Compound Glutathione in Moss from Industrial Areas

Levels of Antioxidant Compound Glutathione in Moss from Industrial Areas

Effect of Gap Position on the Heavy Metal Contents of Epiphytic Mosses and Lichens on the Fallen Logs and Standing Trees in an Alpine Forest

Responses to Cadmium in Early-Diverging Streptophytes (Charophytes and Bryophytes): Current Views and Potential Applications

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