Arbuscular mycorrhizal fungi-induced mitigation of heavy metal phytotoxicity in metal contaminated soils: A critical review

Riaz, Muhammad; Kamran, Muhammad; Fang, Yizeng; Wang, Qianqian; Cao, Huayuan; Yang, Guobin; Deng, Lulu; Wang, Youjuan; Zhou, Yaoyu; Anastopoulos, Ioannis; Wang, Xiurong

doi:10.1016/j.jhazmat.2020.123919

Cited by 369 publications

(143 citation statements)

References 220 publications

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“…Plant tolerance to Al stress and soil acidity could be strengthened by symbiosis with arbuscular mycorrhizal fungi (AMF) [ 13 , 14 , 15 ]. AMF can provide a wide range of benefits to the host plant, such as forming a unique mycelial network, connecting plants of different species, regulating their growth, and allowing access to nutrients that would otherwise be unavailable [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…AMF can provide a wide range of benefits to the host plant, such as forming a unique mycelial network, connecting plants of different species, regulating their growth, and allowing access to nutrients that would otherwise be unavailable [ 16 ]. AMF can also act as a physical barrier, capable of filtering and immobilizing toxic elements, in both extra- and intraradical fungal structures, thus mitigating the hazardous impacts of these phytotoxic elements [ 14 , 17 ]. From the metabolomic point of view, several mechanisms, direct and indirect, are suggested whereby AMF can stimulate plant growth and reduce the phytotoxicity of heavy metals [ 18 , 19 ], even in acidic soils that contain toxic levels of Al 3+ [ 14 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…AMF can also act as a physical barrier, capable of filtering and immobilizing toxic elements, in both extra- and intraradical fungal structures, thus mitigating the hazardous impacts of these phytotoxic elements [ 14 , 17 ]. From the metabolomic point of view, several mechanisms, direct and indirect, are suggested whereby AMF can stimulate plant growth and reduce the phytotoxicity of heavy metals [ 18 , 19 ], even in acidic soils that contain toxic levels of Al 3+ [ 14 , 20 ]. For instance, AMF can improve antioxidant defenses and the production of low-molecular-weight compounds, such as proline (Pro) [ 7 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

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Arbuscular Mycorrhizae Mitigate Aluminum Toxicity and Regulate Proline Metabolism in Plants Grown in Acidic Soil

Alotaibi

Saleh

Sobrinho

et al. 2021

JoF

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Arbuscular mycorrhizal fungi (AMF) can promote plant growth and induce stress tolerance. Proline is reported to accumulate in mycorrhizal plants under stressful conditions, such as aluminum (Al) stress. However, the detailed changes induced in proline metabolism under AMF–plant symbiosis has not been studied. Accordingly, this work aimed to study how Al-stressed grass (barley) and legume (lotus) species respond to AMF inoculation at growth and biochemical levels. The associated changes in Al uptake and accumulation, the rate of photosynthesis, and the key enzymes and metabolites involved in proline biosynthesis and degradation pathways were studied. Soil contamination with Al induced Al accumulation in tissues of both species and, consequently, reduced plant growth and the rate of photosynthesis, while more tolerance was noticed in lotus. Inoculation with AMF significantly reduced Al accumulation and mitigated the negative impacts of Al on growth and photosynthesis in both species; however, these positive effects were more pronounced in barley plants. The mitigating action of AMF was associated with upregulation of proline biosynthesis through glutamate and ornithine pathways, more in lotus than in barley, and repression of its catabolism. The increased proline level in lotus was consistent with improved N metabolism (N level and nitrate reductase). Overall, this study suggests the role of AMF in mitigating Al stress, where regulation of proline metabolism is a worthy mechanism underlying this mitigating action.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Arbuscular Mycorrhizae Mitigate Aluminum Toxicity and Regulate Proline Metabolism in Plants Grown in Acidic Soil

Alotaibi

Saleh

Sobrinho

et al. 2021

JoF

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“…Metals stress is the major ecological issue, now a days for agricultural soil and arises from the geological sources such as vast industrialization and some agricultural practices. 1 Moreover, anthropogenic activities such as mine and smelters, 2 rapid industrialization, 3 untreated wastewater irrigation, 4 atmospheric deposition, 5 disposal of wastes, gasoline and paints, fertilizers, 6 bio solids, 7 and pesticides 8 are major causes to increase the concentrations of various toxic pollutants, especially Cd in the soil. 9 , 10 The Cd is a hazardous trace element because of its higher solubility, mobility and toxicity in the nature.…”

Section: Introductionmentioning

confidence: 99%

Silicon Application Modulates Growth, Physio-Chemicals, and Antioxidants in Wheat (Triticum aestivum L.) Exposed to Different Cadmium Regimes

et al. 2021

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Silicon (Si) application enhanced the tolerance of plants against different environmental stresses. Therefore, objective of the study revealed that foliar applied Si alleviates the adverse effect of Cd by enhancing the growth, metabolite accumulation, strengthening the antioxidant defense system, reducing oxidative injury, improving plant nutrient status, and decreasing the Cd uptake in wheat. The surface sterilized seeds of Sahar-2006 (tolerant) and Inqalab-91 (sensitive) having the differential metal tolerance capacity were sown in plastic pots containing normal and Cd spiked sandy loamy soil. The design of experiments was completely randomized with 3 replicates per treatment. Two weeks after germination, plants were sprayed with different concentrations of Si (1.5 and 3 mM) with 0.1% surfactant in the form of Tween-20. The plants were harvested after 2 weeks of Si application to determine various attributes. High concentration of Cd (25 mg kg-1) decreased growth-related-attributes, essential nutrient uptake and increase the levels of oxidative stress indicators. The application of Si increased the growth-related attributes, photosynthetic pigments, essential nutrient uptake and also enhanced the activities of various antioxidant compounds (superoxide dismutase (SOD), peroxidase (POD, ascorbate peroxidase (APX) and catalase (CAT) by decreasing the contents of oxidative stress indicators and Cd uptake in root and shoot of both wheat cultivars. Sahar-2006 cultivar showed more tolerance to Cd regimes than that of Inqalab-91 as clear from greater plant dry masses. Thus, our results showed that the applied Si level (3 mM) is an efficient strategy for field use in the areas, where slightly Cd polluted soils limit the agriculture production.

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“…al. 2019, Saleem et al 2020, Liu et al 2018).MDA is the oxidation product of lipid peroxidation, indicating the generation of free radicals and re ecting the degree of damaged membranes which are caused by abiotic stress(Riaz et al 2021, Ohkawa H 1979. Lipid peroxidation is mediated by free radicals(Slater 1984a;b), which is the best measure(Halliwell 1991) to test the damage that is caused by increasing reactive oxygen species (ROS).…”

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confidence: 99%

Investigating Phragmites Australis Response to Copper Exposure Using Physiologic，FTIR and Metabolomic Approaches

Gao

et al. 2021

Preprint

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Background and aim Phragmites australis is a landscape plant with phytoremediation functions that is widely planted worldwide. However, little is known about the metabolomic background of the resistance mechanisms of Phragmites to heavy metals during its growth and development. Methods Here, we performed copper stress studies on Phragmites and monitored physiological indicators such as malondialdehyde (MDA) and electrolyte leakage (EL). In addition, FTIR was used to study chemical composition changes in the roots, stems and leaves of Phragmites seedlings under excessive copper stress. Furthermore, LC-MS technology combined with metabolomics data processing software was used to analyze the metabolic profile of samples.Result Copper contributed to the accumulation of MDA and EL. And the results of FTIR showed that the antioxidant effects of flavonoids and amino acids can be used by Phragmites leaf tissue to improve the tolerance of copper under 5 mg/L concentration. Further, the results of metabolomics reflected that Phragmites can improve its resistance to copper by increasing the accumulation of arginine and ayarin in the body. The former is accumulated through two pathways: the citrulline decomposition and conversion pathway and the circular pathway composed of ornithine, citrulline, L-Argininosuccinate and arginine. The latter is synthesized through the quercetin methylation pathway.Conclusion This study provides insights into the resistance mechanism and repair performance of Phragmites and other plant accumulators in response to copper stress.

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Arbuscular mycorrhizal fungi-induced mitigation of heavy metal phytotoxicity in metal contaminated soils: A critical review

Cited by 369 publications

References 220 publications

Arbuscular Mycorrhizae Mitigate Aluminum Toxicity and Regulate Proline Metabolism in Plants Grown in Acidic Soil

Arbuscular Mycorrhizae Mitigate Aluminum Toxicity and Regulate Proline Metabolism in Plants Grown in Acidic Soil

Silicon Application Modulates Growth, Physio-Chemicals, and Antioxidants in Wheat (Triticum aestivum L.) Exposed to Different Cadmium Regimes

Investigating Phragmites Australis Response to Copper Exposure Using Physiologic，FTIR and Metabolomic Approaches

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