Effects of the combined pollution of cadmium, lead and zinc on the phytoextraction efficiency of ryegrass (<i>Lolium perenne</i> L.)

Zhang, Jun; Yang, Ningning; Yani, Geng; Zhou, Jinhong; Ji, Lei

doi:10.1039/c9ra01986c

Cited by 46 publications

(12 citation statements)

References 26 publications

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“…The phytoremediation capability of L. perenne is limited for metals such as single Hg and Cd or a mixture of metals (Gavrilescu 2022 ; Li et al 2020 ; Zhang et al 2019 ). Therefore, as mentioned above and as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Changes in Lolium perenne L. rhizosphere microbiome during phytoremediation of Cd- and Hg-contaminated soils

Saldarriaga

López

Díaz-García

et al. 2023

Environ Sci Pollut Res

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The contamination of soil and water by metals such as mercury (Hg) and cadmium (Cd) has been increasing in recent years, because of anthropogenic activities such as mining and agriculture, respectively. In this work, the changes in the rhizosphere microbiome of Lolium perenne L. during the phytoremediation of soils contaminated with Hg and Cd were evaluated. For this, two soil types were sampled, one inoculated with mycorrhizae and one without. The soils were contaminated with Hg and Cd, and L. perenne seeds were sown and harvested after 30 days. To assess changes in the microbiome, DNA isolation tests were performed, for which samples were subjected to two-step PCR amplification with specific 16S rDNA V3-V4 primers (337F and 805R). With mycorrhizae, changes had been found in the absorption processes of metals and a new distribution. While with respect to microorganisms, families such as the Enterobacteriaceae have been shown to have biosorption and efflux effects on metals such as Hg and Cd. Mycorrhizae then improve the efficiency of removal and allow the plant to better distribute the absorbed concentrations. Overall, L. perenne is a species with a high potential for phytoremediation of Cd- and Hg-contaminated soils in the tropics. Inoculation with mycorrhizae modifies the phytoremediation mechanisms of the plant and the composition of microorganisms in the rhizosphere. Mycorrhizal inoculation and changes in the microbiome were associated with increased plant tolerance to Cd and Hg. Microorganism-assisted phytoremediation is an appropriate alternative for L. perenne.

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Section: Resultsmentioning

confidence: 99%

Changes in Lolium perenne L. rhizosphere microbiome during phytoremediation of Cd- and Hg-contaminated soils

Saldarriaga

López

Díaz-García

et al. 2023

Environ Sci Pollut Res

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“…Unlike the other three PTEs, Zn is an essential element for plants when present in lesser amounts, while in excessive amounts it exerts detrimental effects on plant growth and development (Rizwan et al, 2019). The highest shoot Zn levels were recorded in P. saundersiana and A. frigida, which were markedly lower than the Zn accumulation in plants in other studies, such as Lolium perenne L. (Zhang et al, 2019) and Salix spp. (Yang et al, 2020).…”

Section: Discussionmentioning

confidence: 79%

“…(Yang et al, 2020). This possible reason is the lower soil Zn levels in the study area compared with those in other Zn-contaminated soils (Zhang et al, 2019;Yang et al, 2020). In addition, Zn is di cult to accumulate in plants in the aboveground parts compared to the other three PTEs.…”

Section: Discussionmentioning

confidence: 88%

Accumulation of potentially toxic trace elements (PTEs) by native plant species growing in a typical gold mining area located in the northeast of Qinghai-Tibet Plateau

Wang

Xie

et al. 2021

Environ Sci Pollut Res

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Though gold mines provide signi cant economic bene ts to local governments, mining causes soil pollution by potentially toxic trace elements (PTEs) in mining areas, especially in the Qinghai-Tibet Plateau. Screening of native plant species from mining areas is now an effective, inexpensive, and ecofriendly method for the remediation of PTEs in situ. In the present study, we conducted experiments to assess the accumulation of As, Cd, Pb, and Zn in 12 native plant species growing on a typical gold mining area in Qinghai-Tibet Plateau. Our results showed that rhizosphere soils have high soil organic matter content, high levels of As, and moderate levels of Cd. G. pylzowianum accumulated relatively higher As in its shoots and exhibited TF higher than 1 for As (4.65), Cd (1.87), and Pb (1.36). P. saundersiana had BCF-S higher than 1 for Cd (4.52) and Pb (1.70), whereas its TF was higher than 1 for As, Cd, Pb, and Zn. These plant species also exhibit strong tolerance to these PTEs. Furthermore, E. nutans accumulated low levels of As, Cd, Pb, and Zn in their shoots and exhibited TF values lower than 1 for the four PTEs. Therefore, G. pylzowianum could be used for the in situ phytoextraction of As, and P. saundersiana can be used as an effective plant for Cd and Pb phytoextraction. E. nutans is better suited for the phytostabilisation of multiple PTEs. Our study is of signi cant importance for introducing native plant species to remediate PTE-contaminated soils, particularly As and Cd, and has a good potential for developing PTE phytoremediation strategies at mining sites. HighlightsAs was the prime pollutant in soils surrounding the gold mine.Phytoremediation of PTEs in 12 native plants was examined at a gold mining site. P. saundersiana had TF higher than 1 for all PTEs.

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“…The higher uptake of essential elements, such as Zn and Cu, could be explained by their involvement in the enzymatic activity of plants, which may control the absorption intensity of toxic elements. For example, Zn may alleviate the toxic effects of Cd and Pb and, thus, enhance their uptake [ 66 ]. The similar properties of Zn and Cd also contribute to an increase in Cd uptake by using the same uptake mechanisms as Zn.…”

Section: Resultsmentioning

confidence: 99%

Lithium Accumulation in Salvinia natans Free-Floating Aquatic Plant

et al. 2022

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The new context of the intensive use of lithium-based batteries led to increased production of Li and Li-containing wastes. All these activities are potential sources of environmental pollution with Li. However, the negative impact of Li on ecosystems, its specific role in the plants’ development, uptake mechanism, and response to the induced stress are not fully understood. In this sense, the Li uptake and changes induced by Li exposure in the major and trace element contents, photosynthetic pigments, antioxidant activity, and elemental composition of Salvinia natans were also investigated. The results showed that Salvinia natans grown in Li-enriched nutrient solutions accumulated much higher Li contents than those grown in spring waters with a low Li content. However, the Li bioaccumulation factor in Salvinia natans grown in Li-enriched nutrient solutions was lower (13.3–29.5) than in spring waters (13.0–42.2). The plants exposed to high Li contents showed a decrease in their K and photosynthetic pigments content, while their total antioxidant activity did not change substantially.

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Effects of the combined pollution of cadmium, lead and zinc on the phytoextraction efficiency of ryegrass (Lolium perenne L.)

Abstract: The effects of cadmium, lead and zinc combined pollution on the phytoextraction efficiency of ryegrass (Lolium Perenne L.) were investigated in this manuscript. Orthogonal experimental design was adopted in pot test.

Cited by 46 publications

References 26 publications

Changes in Lolium perenne L. rhizosphere microbiome during phytoremediation of Cd- and Hg-contaminated soils

Changes in Lolium perenne L. rhizosphere microbiome during phytoremediation of Cd- and Hg-contaminated soils

Accumulation of potentially toxic trace elements (PTEs) by native plant species growing in a typical gold mining area located in the northeast of Qinghai-Tibet Plateau

Lithium Accumulation in Salvinia natans Free-Floating Aquatic Plant

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