The effect of the exogenous application of EDTA and maleic acid on tolerance, phenolic compounds, and cadmium phytoremediation by okra (Abelmoschus esculentus L.) exposed to Cd stress

Mousavi, Afsaneh; Pourakbar, Latifeh; Moghaddam, Sina Siavash; Popović‐Djordjević, Jelena

doi:10.1016/j.jece.2021.105456

Cited by 43 publications

(21 citation statements)

References 57 publications

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“…Chemical amendments, such as synthetic organic chelates, can enhance phytoextraction by increasing HM bioavailability in soil, thus enhancing plant uptake and the translocation of HMs from the roots to the green parts of tested plants [ 89 ]. Among chelates, EDTA, EDDS, and citric acid have been used as viable environmental technologies to enhance the efficiency of phytoremediation [ 10 , 17 , 39 , 90 ]. However, the in-situ application of chelating agents can cause groundwater pollution through uncontrolled metal dissolution and leaching.…”

Section: Resultsmentioning

confidence: 99%

Knowledge Mapping of the Phytoremediation of Cadmium-Contaminated Soil: A Bibliometric Analysis from 1994 to 2021

Zhao

Lei

2022

IJERPH

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Cadmium pollution of soil threatens the environmental quality and human health. Phytoremediation of cadmium-contaminated soil has attracted global attention in recent decades. This study aimed to conduct a comprehensive and systematic review of the literature on phytoremediation of cadmium-contaminated soil based on bibliometric analysis. A total of 5494 articles published between 1994 and 2021 were retrieved from the Web of Science Core Collection. Our knowledge mapping presented the authors, journals, countries, institutions, and other basic information to understand the development status of phytoremediation of cadmium-contaminated soil. Based on a keyword cluster analysis, the identified major research domains were “biochar”, “Thlaspi caerulescens”, “endophytic bacteria”, “oxidative stress”, “EDTA”, and “bioconcentration factor”. Overall, this study provided a detailed summary of research trends and hotspots. Based on the keyword co-occurrence and burst analysis, the core concepts and basic theories of this field were completed in 2011. However, the pace of theoretical development has been relatively slow. Finally, future research trends/frontiers were proposed, such as biochar addition, rhizosphere bacterial community manipulation, cadmium subcellular distribution, and health risk assessment.

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Section: Resultsmentioning

confidence: 99%

Knowledge Mapping of the Phytoremediation of Cadmium-Contaminated Soil: A Bibliometric Analysis from 1994 to 2021

Zhao

Lei

2022

IJERPH

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“…Secondary metabolites of phenolic nature, including flavonoids, are the main compounds responsible for the defense mechanism of plants [ 47 ], but also for the improved nutritional values of crops because of their well-known antioxidant activities. It has been previously confirmed that the concentration of phenolic compounds in radish depends on the particular radish variety and the influence of methods used to improve radish characteristics [ 13 , 48 ].…”

Section: Discussionmentioning

confidence: 99%

Improvement of Germination and Early Growth of Radish (Raphanus sativus L.) through Modulation of Seed Metabolic Processes

Kanjevac

Jakovljević

Todorović

et al. 2022

Plants

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Radish (Raphanus sativus L.) is a vegetable cultivated worldwide because of its large succulent hypocotyls. The priming method initiates metabolic processes at early stages and regulates the metabolic events in seed necessary for germination. This research was conducted to examine the influence of various priming treatments on physiological performance (germination, growth, lipid peroxidation, primary and secondary metabolism) and antioxidant activity of radish seedlings. On the basis of germination and growth characteristics, vigor index, and relative water content in leaves, it was confirmed that priming treatments with 0.01% ascorbic acid (AA) and 1% KNO3 improves the initial stages of radish development. Furthermore, the efficiency of AA as a priming agent was confirmed through the reduction of malondialdehyde (MDA) level compared to unprimed seedlings. On the other hand, hormopriming with indole-3-acetic acid (IAA) significantly increased the concentration of photosynthetic pigments and total soluble leaf proteins compared to non-primed seedlings. The highest content of total phenolic compounds, including flavonoids, were obtained after hormopriming with 1 mM IAA and halopriming with 1% MgSO4. On the basis of the percentage of inhibition of DPPH radicals, it was confirmed that treatments with IAA and AA can improve the antioxidant activity of radish seedlings. This study provides useful information regarding the possibilities of pregerminative metabolic modulation through the seed priming for the biochemical and physiological improvement of radish, and this topic should be further investigated in order to determine the potential use of AA and IAA as suitable priming agents in radish commercial production.

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“…Additionally, a decrease of phenolic compounds under Fe contamination was observed. Moreover, [ 54 ] found a decrease in the phenol content in Cd-treated okra plants. As [ 55 ] suggested, the lack of an increase of phenolic compounds in blueberry leaves might have been caused by an excessive accumulation of toxic metals, especially Cd, Pb and Zn, which could impair the antioxidative system responses based on phenolics in such way that plants are not able to synthesise new phenols.…”

Section: Discussionmentioning

confidence: 99%

Evaluating the Accumulation of Antioxidant and Macro- and Trace Elements in Vaccinium myrtillus L.

Kandziora-Ciupa

Dabioch

Nadgórska–Socha

2021

Biol Trace Elem Res

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This study was conducted in order to characterise the accumulation ability of Vaccinium myrtillus L for trace elements such as Al, Cd, Cu, Fe, Mn, Pb and Zn and selected macroelements Ca, K, Mg, Na and P. The accumulation of nutrient elements and trace elements (ANE and ATE) and changes in the ecophysiological responses in bilberry in differently polluted areas were compared. The accumulation of the elements in the roots, stems and leaves of bilberry from four sites (in the nearest vicinity of a zinc smelter, a Mining and Metallurgical Plant, a main road with a high traffic volume and an unprotected natural forest community) were measured using optical emission spectrometry with excitation using inductively coupled argon plasma after wet acid digestion. The highest Cd, Cu, Pb and Zn concentrations were found in the V. myrtillus samples that were growing under the influence of the emissions from the zinc smelter. Moreover, the level of the total accumulated trace metals (ATE—17.09 mmolc kg−1) was also highest for the bilberry at this site. However, in the same area, the sum of the accumulated macronutrients (ANE—296.92 mmolc kg−1) was lower than at the other sampling sites. An EF > 2 was found for Cd, Pb, Zn and Mn, which suggests that bilberries may be enriched in these metals. According to the translocation factor, V. myrtillus was an accumulator of Cd, Zn and Mn. An analysis of the ecophysiological responses showed that the greatest concentration of ascorbic acid was found in the leaves of V. myrtillus at the most contaminated site (3.32 mg g−1 fresh weight). There were no significant differences in the total phenols between the contaminated and non-contaminated sites. However, the lowest value of the total phenolic content (490.77 mg g−1 dry weight) was recorded at the site where the highest Fe concentration was detected in the leaves. A significantly positive correlation between the Cd, Pb and Zn concentrations and a strong negative correlation between the Mn concentration and ascorbic acid content in the leaves of bilberry was also observed. The results provide evidence that the ANE method, which is used to interpret the chemical composition of bilberry has made determining the impact of toxic trace metals on the mineral composition of V. myrtillus significantly easier and also that a non-enzymatic antioxidant such as ascorbic acid can be a good biomarker for determining the oxidative stress that is caused by toxic trace metals.

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The effect of the exogenous application of EDTA and maleic acid on tolerance, phenolic compounds, and cadmium phytoremediation by okra (Abelmoschus esculentus L.) exposed to Cd stress

Cited by 43 publications

References 57 publications

Knowledge Mapping of the Phytoremediation of Cadmium-Contaminated Soil: A Bibliometric Analysis from 1994 to 2021

Knowledge Mapping of the Phytoremediation of Cadmium-Contaminated Soil: A Bibliometric Analysis from 1994 to 2021

Improvement of Germination and Early Growth of Radish (Raphanus sativus L.) through Modulation of Seed Metabolic Processes

Evaluating the Accumulation of Antioxidant and Macro- and Trace Elements in Vaccinium myrtillus L.

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