Lead accumulation, growth responses and biochemical changes of three plant species exposed to soil amended with different concentrations of lead nitrate

Chandrasekhar, C. N.; Ray, Joseph George

doi:10.1016/j.ecoenv.2018.12.058

Cited by 50 publications

(20 citation statements)

References 32 publications

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“…leaves) and in the roots . A TF value > 1 means a translocation from plant roots to shoots of the HMs occurring in the soil . The TF values calculated for the HMs investigated are reported in Table .…”

Section: Resultsmentioning

confidence: 99%

“…65 A TF value > 1 means a translocation from plant roots to shoots of the HMs occurring in the soil. 17 The TF values calculated for the HMs investigated are reported in Table 3. Although TF values higher than 1 were obtained for several HMs (Sn, Tl, Be, Cd, Sb, Co, Zn) their concentrations were substantially negligible, except in the case of Zn in the P2 and P3 target tree.…”

Section: Heavy Metal Resultsmentioning

confidence: 99%

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Heavy metal phytoremediation of a poplar clone in a contaminated soil in southern Italy

Ancona

Caracciolo

Campanale

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND The Monviso clone previously tested successfully to remediate a lindane‐contaminated soil in central Italy was then applied in a historically heavy metal contaminated area in southern Italy. RESULTS The results obtained at 900 days from the poplar planting showed a strong decrease below Italian national legal limits (D.Lgs 152/06) for most heavy metals (HMs). The highest reduction of HM concentrations was observed in soil samples collected near the trunk (25 cm distant from poplar) and in the rhizosphere. The values of the HM bioaccumulation factor (BAF, considering roots and leaves) and of the translocation factor (TF) suggest that poplar trees were able to phytostabilize HMs. The soil organic carbon content increased compared to the previous sampling in all plots planted. The highest values were observed for the rhizosphere soils of each target tree, while the phosphorous available strongly decreased. Microbial results showed an overall increase in cell viability, dehydrogenase activity and microbial abundance of some bacterial groups. CONCLUSION Overall results showed that the poplar‐based phytoremediation strategy was able to promote the phytostabilization of the HMs and to improve the soil quality in terms of both organic carbon content and microbial community structure and activity. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Section: Heavy Metal Resultsmentioning

confidence: 99%

Heavy metal phytoremediation of a poplar clone in a contaminated soil in southern Italy

Ancona

Caracciolo

Campanale

et al. 2019

J of Chemical Tech & Biotech

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“…Lead (Pb), which is highly phytotoxic, has been recognized as one of the most abundant heavy metals worldwide, and its accumulation is regarded as irreversible and highly toxic to plants (Qin et al., 2018; Shahid, Pinelli, Pourrut, Silvestre, & Dumat, 2011). Although Pb is not an essential element for plants, it is found to have strong affinity to organic and/or inorganic ligands in the soil (Cunningham, Berti, & Huang, 1995; Rodríguez‐Seijo, Andrade, & Vega, 2017), and it can be easily absorbed by plant roots and accumulated in plant tissues even at a low level (Chandrasekhar & Ray, 2019; Johnson, 1998). The hazardous effects of Pb on plant morphological, metabolic, physiological, and biochemical processes have been widely studied (Rucinska, Sobkowiak, & Gwozdz, 2004; Strubińska & Hanaka, 2011; Verma & Dubey, 2003; Yongsheng, Qihui, & Qian, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…However, only a few technologies are both economical and cost effective. Among those remediation methods, phytoremediation is an eco‐friendly and successful approach for the remediation of toxic metals in polluted soils (Chandrasekhar & Ray, 2019; Cunningham & Berti, 1993; Noufal, Maalla, Noufal, & Hossean, 2017; Salazar & Pignata, 2014). It is a plant‐based technology that utilizes specific hyper‐accumulator plants to retain, remove or reduce toxic metals and metalloids in soil.…”

Section: Introductionmentioning

confidence: 99%

Growth responses and physiological and biochemical changes in five ornamental plants grown in urban lead‐contaminated soils

Song¹,

Zhang

Chen³

et al. 2020

Plant Enviro Interactions

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An increasing concentration of lead (Pb) in urban contaminated soil due to anthropogenic activities has been a global issue threatening human health. The use of urban ornamental plants as phytoremediation of Pb‐contaminated soil is a new choice. In the present experiment, the physiological and biochemical response of five ornamental plants to increase in concentrations of C4H6O4Pb·H2O in the soil were measured to investigate these plans’ Pb tolerance strategies and abilities. Our results showed that Pb stress significantly inhibited the growth and the biomass of all the plants. The root activity (RA), net photosynthetic rate (Pn), and chlorophyll (Chl) content in Pb‐stressed leaves were significantly decreased, whereas the leaf proline (Pro), soluble sugar (SS), and membrane stability index (MSI) were remarkable increased compared with those in the control group. By application of all‐subsets regression and linear regression, the reduction in photosynthetic capacity in the five plants is mainly due to the decrease in the leaf Chl content caused by Pb stress. The bioconcentration factor (BCF) in Canna generalis was greater than 1, while in the other plants were lower than 1, suggesting that Canna generalis had the highest Pb accumulation ability. The translocation factor (TF) in all the plants were lower than 1, suggesting that Pb preferentially accumulated in the external part of roots. By calculating the comprehensive evaluation value (CEV), Iris germanica L. was found to be the most sensitive species, and Canna generalis was the most tolerant species, to Pb stress among the five ornamental plants.

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“…However, the findings of the mentioned research indicated that in the Pb-polluted soil (> 800 mg/kg), the TF value was less than one even in the inoculated treatments [30]. Despite the contradictory reports regarding the effects of Pb toxicity on the plants Pb TF value [31,32], most of the findings have indicated that PGPG and AMF inoculation could reduce abiotic stress, such as heavy metal toxicity [33].…”

Section: Resultsmentioning

confidence: 98%

Neighbor Presence of Plant Growth-promoting Rhizobacteria (PGPR) and Arbuscular Mycorrhizal Fungi (AMF) Can Increase Sorghum Phytoremediation Efficiency in a Soil Treated with Pb Polluted Cow Manure

Baghaie

Aghilizefreei

2019

J Hum Environ Health Promot

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accumulate in living organisms and plants [1]. These elements enter the environment mainly through anthropogenic sources, such as smelting processes, mining, fuel production, and industrial effluents [2]. Therefore, use of proper approached to the reduction of heavy metal availability is essential. Conventional remediation approaches for contaminated soils, sediments, and groundwater are based on the technologies that have been developed over the past two decades [3], including a wide variety of physical, chemical, and thermal treatment alternatives and their combinations, as well as engineering Background: The present study aimed to evaluate the effects of PGPR and AMF on the changes in sorghum phytoremediation efficiency in the soil amended with lead (Pb)polluted cow manure. Methods: Treatments consisted of applying two rates of Pb [0 (Pb0) and 800 (Pb800) mg/kg] polluted cow manure [0 (C0) and 30 (C30) t/ha], two levels of AMF [without (AMF-) and with (AMF+)] and PGPR (without (PGPR-) and with (PGPR+) inoculation. Pseudomonas sp. R9 was considered as a PGPR bacteria. The plant used in this experiment was sorghum. Plant Pb concentration was measured using atomic absorption spectroscopy. Results: The highest plant Pb concentration belonged to the cultivated plant in the soil treated with 30 t/ha Pb-polluted cow manure, while the lowest that was observed in the soil without amending cow manure in the absence of PGPR or AMF. The presence of AMF significantly increased the Pb translocation value and sorghum phytoremediation efficiency by 8% and 13.4%, respectively. Conclusion: According to the results, the inoculated plant with PGPR and AMF had positive effects on increasing Pb phytoremediation efficiency that, which is notable in environmental studies. However, the effects of soil chemical properties on Pb phytoremediation efficiency cannot be overlooked. * This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.

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Lead accumulation, growth responses and biochemical changes of three plant species exposed to soil amended with different concentrations of lead nitrate

Cited by 50 publications

References 32 publications

Heavy metal phytoremediation of a poplar clone in a contaminated soil in southern Italy

Heavy metal phytoremediation of a poplar clone in a contaminated soil in southern Italy

Growth responses and physiological and biochemical changes in five ornamental plants grown in urban lead‐contaminated soils

Neighbor Presence of Plant Growth-promoting Rhizobacteria (PGPR) and Arbuscular Mycorrhizal Fungi (AMF) Can Increase Sorghum Phytoremediation Efficiency in a Soil Treated with Pb Polluted Cow Manure

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