Improvement of the Cu and Cd phytostabilization efficiency of perennial ryegrass through the inoculation of three metal-resistant PGPR strains

Tan, Karsoon; Guo, Guang‐Yu; Liu, Junrong; Zhang, Chao; Tao, Yue; Wang, Panpan; Xu, Yunyuan; Chen, Lanzhou

doi:10.1016/j.envpol.2020.116314

Cited by 96 publications

(34 citation statements)

References 72 publications

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“…This relationship correlates with the results reported by Wyszkowski and Radziemska [30], and Shah and Daverey [31], who found that a lower level of biomass was observed at high PTE concentrations in the soil. It is worth emphasizing that the degree of tolerance of plants to excessive levels of PTEs in the soil depends primarily on the plant species, the soil pH value and its granulometric composition and the organic matter content [32,33]. The use of soil amendments such as biochar has a beneficial effect on the use of the ingredients contained in them, which can lead to an increase in plant biomass [34].…”

Section: Dactylis Glomerata L Biomass After Biochar Applicationmentioning

confidence: 99%

Biochar-Assisted Phytostabilization for Potentially Toxic Element Immobilization

et al. 2021

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In response to the growing threat to the quality of the soil environment, new technologies are being developed to protect and remediate contaminated sites. A new approach, namely, assisted phytostabilization, has been used in areas contaminated with high levels of potentially toxic elements (PTEs), using various soil additives. This paper determined the effectiveness of biochar-assisted phytostabilization using Dactylis glomerata L. of soil contaminated with high concentrations of the selected PTEs (in mg/kg soil): Cu (780 ± 144), Cd (25.9 ± 2.5), Pb (13,540 ± 669) and Zn (8433 ± 1376). The content of the selected PTEs in the roots and above-ground parts of the tested grass, and in the soil, was determined by atomic absorption spectrometry (AAS). The addition of biochar to the contaminated soil led to an increase in plant biomass and caused an increase in soil pH values. Concentrations of Cu, Cd, Pb and Zn were higher in the roots than in the above-ground parts of Dactylis glomerata L. The application of biochar significantly reduced the total content of PTEs in the soil after finishing the phytostabilization experiment, as well as reducing the content of bioavailable forms extracted from the soil using CaCl2 solution, which was clearly visible with respect to Cd and Pb. It is concluded that the use of biochar in supporting the processes of assisted phytostabilization of soils contaminated with PTEs is justified.

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Section: Dactylis Glomerata L Biomass After Biochar Applicationmentioning

confidence: 99%

Biochar-Assisted Phytostabilization for Potentially Toxic Element Immobilization

et al. 2021

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“…Plant growth-promoting rhizobacteria (PGPR) is an environmentally benign and cost-effective bioremediation technology for reducing heavy metal pollution in soil [ 20 ]. Metal-tolerant PGPR also affects plant survival and adaptability through nitrogen fixation, phytohormone synthesis, and physicochemical changes in polluted soil [ 21 , 22 ]. Plant colonization by PGPR has been driven by the release of various compounds, amino acids, proteins, and antibiotics that aid plants in the removal of heavy metal toxicity.…”

Section: Introductionmentioning

confidence: 99%

Phytohormones Producing Acinetobacter bouvetii P1 Mitigates Chromate Stress in Sunflower by Provoking Host Antioxidant Response

et al. 2021

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Different physical and chemical techniques are used for the decontamination of Cr+6 contaminated sites. The techniques are expensive, laborious, and time-consuming. However, remediation of Cr+6 by microbes is viable, efficient, and cost-effective. In this context, plant growth-promoting rhizobacteria Acinetobacter bouvetii P1 isolated from the industrial zone was tested for its role in relieving Cr+6 induced oxidative stress in sunflower. At the elevated Cr+6 levels and in the absence of P1, the growth of the sunflower plants was inhibited. In contrast, the selected strain P1 restored the sunflower growth under Cr+6 through plant growth–promoting interactions. Specifically, P1 biotransformed the Cr+6 into a stable and less toxic Cr+3 form, thus avoiding the possibility of phytotoxicity. On the one hand, the P1 strengthened the host antioxidant system by triggering higher production of enzymatic antioxidants, including catalases, ascorbate peroxidase, superoxide dismutase, and peroxidase. Similarly, P1 also promoted higher production of nonenzymatic antioxidants, such as flavonoids, phenolics, proline, and glutathione. Apart from the bioremediation, P1 solubilized phosphate and produced indole acetic acid, gibberellic acid, and salicylic acid. The production of phytohormones not only helped the host plant growth but also mitigated the harsh condition posed by the elevated levels of Cr+6. The findings mentioned above suggest that P1 may serve as an excellent phyto-stimulant and bio-remediator in a heavy metal-contaminated environment.

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“…Konkolewska et al found that supplementation of PGPR was helpful for increased nutrient extraction by mustard green (Brassica juncea) [24]. Ke et al also showed improved nutrient uptake by perennial ryegrass [25]. Moreover, Ipek et al reported an increased yield and nutritional profile of strawberries under PGPR treatments [26].…”

Section: Introductionmentioning

confidence: 99%

Combined Use of Sewage Sludge and Plant Growth-Promoting Rhizobia Improves Germination, Biochemical Response and Yield of Ridge Gourd (Luffa acutangula (L.) Roxb.) under Field Conditions

et al. 2022

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This research investigated the combined use of sewage sludge (SS) and plant growth-promoting rhizobia (PGPR) for Ridge gourd (Luffa acutangula (L.) Roxb.) cultivated under field conditions. The different treatments of SS and PGPR such as 0% (soil as control), 5% SS, 5% SS + PGPR, 10% SS, and 10% SS + PGPR were applied to assess their impacts on seedling growth, biochemical response, and yield performance of Ridge gourd. The results showed that the highest seedling emergence (92.3 ± 2.1%), fresh biomass (9.6 ± 0.3 g), growth rate (1.4 ± 0.1 g/day), seedling length (15.5 ± 0.3 cm), root length (10.4 ± 0.3 cm), total chlorophyll (3.2 ± 0.1 mg/g), crop yield (13.8 ± 0.1 kg/plant), and average crop yield per harvest (2.8 ± 0.1 kg/plant) were observed in 10% SS + PGPR treatment. The enzyme activities of superoxide dismutase (SOD; µg/g) and catalase (CAT: µg/g) were significantly lowered after PGPR inoculation in higher SS treatments. The results of principal component (PC) and Euclidian clustered distance analyses showed a positive influence of SS dose on soil nutrient availability and Ridge gourd’s growth, biochemical responses, and yield performance. Moreover, the elemental analysis showed that the bioaccumulation factor (BAF < 0.90) and health risk index (HRI < 0.40) of selected metal elements (Cd, Cr, Cu, Fe, Mn, and Zn) were within the permissible limits, indicating consumption of Ridge gourd fruits was safe. The outcomes of this study suggest the potential use of SS and PGPR for improved Ridge gourd production and contribution towards sustainable development goal (SDG) 12 on responsible consumption and production of vegetable crops.

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Improvement of the Cu and Cd phytostabilization efficiency of perennial ryegrass through the inoculation of three metal-resistant PGPR strains

Cited by 96 publications

References 72 publications

Biochar-Assisted Phytostabilization for Potentially Toxic Element Immobilization

Biochar-Assisted Phytostabilization for Potentially Toxic Element Immobilization

Phytohormones Producing Acinetobacter bouvetii P1 Mitigates Chromate Stress in Sunflower by Provoking Host Antioxidant Response

Combined Use of Sewage Sludge and Plant Growth-Promoting Rhizobia Improves Germination, Biochemical Response and Yield of Ridge Gourd (Luffa acutangula (L.) Roxb.) under Field Conditions

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