2019
DOI: 10.1016/j.scitotenv.2018.08.335
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Mercury mobility and effects in the salt-marsh plant Halimione portulacoides: Uptake, transport, and toxicity and tolerance mechanisms

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Cited by 46 publications
(36 citation statements)
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“…Halimione portulacoides appears to be a good candidate for IMTA in terms productivity and nutrient-extraction 44,88 and has the potential to become a valuable co-product with uses in human nutrition 11 and for other applications 13,22,30 . A note should be made, however, about the possibility of halophytes accumulating undesired compounds if these are present in effluents, like metals 89,90 and chemicals used for therapy and prophylaxis in aquaculture 91 . This possibility must be taken into account when selecting halophytes for IMTA, since the accumulation of contaminants in edible plant organs can pose risks to human health 92 and species that do not accumulate or concentrate contaminants mostly in non-edible tissues will be more appropriate from a product-safety perspective.…”
Section: Discussionmentioning
confidence: 99%
“…Halimione portulacoides appears to be a good candidate for IMTA in terms productivity and nutrient-extraction 44,88 and has the potential to become a valuable co-product with uses in human nutrition 11 and for other applications 13,22,30 . A note should be made, however, about the possibility of halophytes accumulating undesired compounds if these are present in effluents, like metals 89,90 and chemicals used for therapy and prophylaxis in aquaculture 91 . This possibility must be taken into account when selecting halophytes for IMTA, since the accumulation of contaminants in edible plant organs can pose risks to human health 92 and species that do not accumulate or concentrate contaminants mostly in non-edible tissues will be more appropriate from a product-safety perspective.…”
Section: Discussionmentioning
confidence: 99%
“…Regarding other analyzed species, mercury load did not vary across sites in salt marsh plants, in the bivalve S. plana, or in the senegalese sole S. senegalensis. Halophytes are known to retain metals and metalloids, particularly in roots (Duarte et al, 2010), with recent studies evidencing high tolerance and regulation of mercury content in salt marsh species (e.g., Anjum et al, 2016; Cabrita et al, 2018). This could also be related to widespread Hg transport throughout the estuary, coupled with speciesspecific ecological and physiological traits.…”
Section: Discussionmentioning
confidence: 99%
“…At this time of year, plants are less active [35], and therefore the translocation of Hg through the plants could have been hindered for both H. portucaloides and S. fruticosa. This would affect Hg(0) volatilization to the atmosphere through the leaves [37]. Thus, the lack of relationship between air Hg(0) fluxes and temperature or solar radiation could reflect a period of low activity for the plants.…”
Section: Daily Variation On Vegetation-air Hg(0) Fluxesmentioning
confidence: 99%
“…In other plant species besides halophytes, most of the Hg content in foliar tissue has been found to come from the atmosphere rather than Hg translocation from the roots [87][88][89]. In a study conducted with stable Hg isotopes, Cabrita et al [37] found that direct translocation to the aerial parts of the plant does occur, although Hg is mainly accumulated in the roots of H. portulacoides. Moreover, evapotranspiration of Hg from the leaves of the plant may possibly explain the differences in Hg content between below-and aboveground tissues.…”
Section: Samplingmentioning
confidence: 99%
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