Mercury bioaccumulation and phytotoxicity in two wild plant species of Almadén area

Moreno-Jiménez, Eduardo; Gamarra, Roberto Gamarra; Carpena‐Ruiz, Ramón O.; Millán, Rocío; Peñalosa, Jesús M.; Esteban, Elvira

doi:10.1016/j.chemosphere.2005.09.043

Cited by 112 publications

(54 citation statements)

References 12 publications

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“…Plant roots and shoots could be a reservoir of heavy metals and the biomass of plant would be related to the uptake amount of heavy metals by the plant (Moreno-Jimenez et al, 2006). In QY, mean Hg concentrations in maize (main crop of QY) followed the order: leaf (81.1 lg/kg) > root (43.1 lg/kg) > stem (29.4 lg/kg), which were 3-10 times higher than those in grains showing that biomass of plant contribute greatly to the remove of soil Hg from field.…”

Section: Mercury Concentration In Soils Under Different Agricultural mentioning

confidence: 99%

“…Some of the crucial changes in soil Hg concentration could also be induced by the changes of land use and soil fertility (Lacerda et al, 2004;Mainville et al, 2006). In addition, plants could function as conduits for the interfacial transport of Hg from the soil to the atmosphere, and this capacity of transportation often varied according to the plant species (Leonard et al, 1998;Moreno-Jimenez et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Mercury in soils of three agricultural experimental stations with long-term fertilization in China

Zheng

Liu

et al. 2008

Chemosphere

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a b s t r a c tMercury (Hg) in the agricultural ecosystem is a global concern because of its high potential toxicity. The objectives of this study were to determine the concentration and distribution of Hg in soils from three long-term experimental stations, i.e., Taoyuan (TY) and Qiyang (QY) in Hunan Province and Fengqiu (FQ) in Henan Province of China, and thus to assess the possible food and health risk of long-term applications of fertilizers. Soil samples at each site were collected from different fertilization plots and also from soil profiles with depths 0-100 cm. There were significant differences in soil Hg concentrations in 0-20 cm (A) or 20-40 cm (B) horizon among the three experimental stations. QY station showed significantly higher Hg concentrations than TY and FQ stations. However, there were no significant differences in soil Hg concentrations between A and B horizons at each station. It was concluded that the soil Hg concentrations at the three sites were mainly controlled by the parent materials. Moreover, chemical fertilizer, especially phosphorous fertilizers, could influence the soil Hg concentrations to some extent at the station with lower soil Hg concentrations, for example, at TY station. There were minimal amounts of Hg resulting from applications of the other chemical fertilizers and organic manure, and thus the fertilization had very low risk to the food security of the agro-ecosystems in the terms of Hg inputs and contamination.

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Section: Mercury Concentration In Soils Under Different Agricultural mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mercury in soils of three agricultural experimental stations with long-term fertilization in China

Zheng

Liu

et al. 2008

Chemosphere

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“…2a). This partitioning of mercury was observed also in other plants, such as Rumexinduratus, Marrubium vulgare, Medicagosativa and maize (Carrasco-Gil et al, 2013;Debeljak et al, 2013;Moreno-Jiménez et al, 2006). The highest Hg concentrations were seen in the 50 Hg treatment.…”

Section: Hg and Se Concentrations In Plant Tissuesmentioning

confidence: 58%

The Effect of Selenium on Mercury Transport Along the Food Chain

Zidar¹,

Kržišnik²,

Debeljak³

et al. 2016

AGR

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More than 500 years of mercury (Hg) production in Idrija (Slovenia) resulted in a considerable pollution of Idrija region with Hg. Although the mine is closed for more than 20 years, the total soil concentration of Hg may still reach up to several hundred mgkg -1 dry weightin local gardens and more that thousand inother urban regions. Hg in soil undergoesdifferent chemical transformations and in some formsit may enterplants and higher trophic levelsin food chains, also with biomagnification pattern.The local population is, besides air and dust, thus exposed to mercury also via consumption of locally produced food.Several studies showed that the increased level of selenium in soil may reduce the uptake of mercury in plants but very few include other trophic levels in a food chain as well.In our pilot study we followed an impact of Seon Hg transport from soil to plants (Lactucasativa) and further to soil dwelling animals (Porcellioscaber). Lettuce was planted in a contaminated soil from Idrija and in soil with added HgCl 2 . The leaves of half of the plants weresprayed with Sesolution (5µg L -1 )threeand five weeks after planting.After six weeks plants were analyzed for Hg and Se and offered as food to terrestrial isopods for two weeks. Our preliminary results revealed that foliar treatment of plants with Se may affect Hg accumulation in plants and therefore further transport of Hg across the food chain.

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“…These results indicated that the increment of air Hg level enhanced Hg accumulation and further induced free proline generation as well as membrane lipid peroxidation in Columns at the same time with different letters denote significant differences at p<0.05 among the treatments of soil Hg exposure maize leaves. A number of studies have reported the quantitative increases in proline and MDA under heavy metal stress (Cargnelitti et al 2006;Cho and Park 2000;Moreno-Jiménez et al 2006;Radic et al 2010;Zhang et al 2008). Cho and Park (2000) reported that a consistent increase in the MDA level paralleled an increase in the Hg concentration in tomato leaves.…”

Section: Effects Of Air Hg Exposures On the Physiology Of Maize Leavesmentioning

confidence: 99%

“…Mercury (Hg) is a strong phytotoxic metal, which has wideranging adverse effects on the physiological activities of plants, such as prevention of mineral nutrient uptake (Patra and Sharma 2000); inhibition of photosynthesis (Krupa and Baszynski 1995;Lu et al 2000;Pisani et al 2011), transpiration, and water uptake (Zhang and Tyerman 1999); and induction of lipid peroxidation (Cho and Park 2000;Cargnelitti et al 2006;Moreno-Jiménez et al 2006). Mercuric ions react specifically with sulfhydryl groups in proteins and induce the Fenton reaction, resulting in oxidative stress and membrane lipid peroxidation in plants (Han et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Field controlled experiments on the physiological responses of maize (Zea mays L.) leaves to low-level air and soil mercury exposures

Niu

Zhang

Wang

et al. 2013

Environ Sci Pollut Res

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Thousands of tons of mercury (Hg) are released from anthropogenic and natural sources to the atmosphere in a gaseous elemental form per year, yet little is known regarding the influence of airborne Hg on the physiological activities of plant leaves. In the present study, the effects of low-level air and soil Hg exposures on the gas exchange parameters of maize (Zea mays L.) leaves and their accumulation of Hg, proline, and malondialdehyde (MDA) were examined via field open-top chamber and Hg-enriched soil experiments, respectively. Low-level air Hg exposures (<50 ng m −3 ) had little effects on the gas exchange parameters of maize leaves during most of the daytime (p>0.05). However, both the net photosynthesis rate and carboxylation efficiency of maize leaves exposed to 50 ng m −3 air Hg were significantly lower than those exposed to 2 ng m −3 air Hg in late morning (p<0.05). Additionally, the Hg, proline, and MDA concentrations in maize leaves exposed to 20 and 50 ng m −3 air Hg were significantly higher than those exposed to 2 ng m −3 air Hg (p<0.05). These results indicated that the increase in airborne Hg potentially damaged functional photosynthetic apparatus in plant leaves, inducing free proline accumulation and membrane lipid peroxidation. Due to minor translocation of soil Hg to the leaves, low-level soil Hg exposures (<1,000 ng g −1 ) had no significant influences on the gas exchange parameters, or the Hg, proline, and MDA concentrations in maize leaves (p>0.05). Compared to soil Hg, airborne Hg easily caused physiological stress to plant leaves. The effects of increasing atmospheric Hg concentration on plant physiology should be of concern.

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Mercury bioaccumulation and phytotoxicity in two wild plant species of Almadén area

Cited by 112 publications

References 12 publications

Mercury in soils of three agricultural experimental stations with long-term fertilization in China

Mercury in soils of three agricultural experimental stations with long-term fertilization in China

The Effect of Selenium on Mercury Transport Along the Food Chain

Field controlled experiments on the physiological responses of maize (Zea mays L.) leaves to low-level air and soil mercury exposures

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