The role of submerged macrophytes in phytoremediation of arsenic from contaminated water: A case study on Vallisneria natans (Lour.) Hara

Li, Bin; Gu, Bowen; Yang, Zhaoguang; Zhang, Ting

doi:10.1016/j.ecoenv.2018.09.023

Cited by 47 publications

(27 citation statements)

References 48 publications

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“…This effect might be an explanation for the significantly decreased biomass and protein content in C. demersum . Furthermore, the CAT activity was much lower than that of SOD and POD in both species, which is consistent with the findings of Li et al [24], indicating that the activities of SOD and POD were more easily activated for defense in the antioxidant enzyme system in the submerged plants. The growth status and defense mechanism of H. verticillata were excellent after 14 days of exposure, suggesting a high tolerance potential, which needs to be verified by further study.…”

Section: Resultssupporting

confidence: 91%

“…Previous studies have reported that Pb induces oxidative stress by increasing the production of ROS (Reactive Oxygen Species) in plants [44], and then antioxidant systems are naturally activated to remove the toxicity of ROS [45]. MDA, which is a thiobarbituric acid reactive substance, is produced by lipid peroxidation and is widely used to indicate the extent of oxidative stress [24]. As MDA is not advantageous for plant growth, a high MDA content indicates that the stress tolerance of a plant is weak.…”

Section: Resultsmentioning

confidence: 99%

“…Plants applied for phytoremediation should exhibit high and efficient absorption during their optimal performance period. According to previous studies, a period of 12–15 days has been proven to be an optimal performance period for plants treated with heavy metals [18,20,21,22,23,24]. Aquatic plants absorb considerable amounts of heavy metals but are not heavily poisoned after approximately 14 days of heavy metal exposure.…”

Section: Introductionmentioning

confidence: 99%

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Defense Mechanisms of Two Pioneer Submerged Plants during Their Optimal Performance Period in the Bioaccumulation of Lead: A Comparative Study

Zhang

Chen

et al. 2018

IJERPH

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Ceratophyllum demersum L. and Hydrilla verticillata (L.f.) Royle, two pioneer, submerged plants, effectively remove heavy metals from contaminated water. The present work evaluates the bioaccumulation and defense mechanisms of these plants in the accumulation of lead from contaminated water during their optimal performance period. C. demersum and H. verticillata were investigated after 14 days of exposure to various lead concentrations (5–80 μM). The lead accumulation in both C. demersum and H. verticillata increased with an increasing lead concentration, reaching maximum values of 2462.7 and 1792 mg kg−1 dw, respectively, at 80 μM. The biomass and protein content decreased significantly in C. demersum when exposed to lead. The biomass of H. verticillata exposed to lead had no significant difference from that of the controls, and the protein content increased for the 5–10 μM exposure groups. The malondialdehyde (MDA) content and superoxide dismutase (SOD), peroxidase (POD), and polyphenol oxidase (PPO) activities were much higher in C. demersum, suggesting considerable damage from lipid peroxidation and sensitivity to lead stress. Enzyme inhibition and inactivation were also observed in C. demersum at high lead concentrations (40–80 μM). The excellent growth status, low damage from lipid peroxidation, and high activity of catalase (CAT) and phenylalanine ammonia-lyase (PAL) observed in H. verticillata illustrate its better tolerance under the same lead stress.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Defense Mechanisms of Two Pioneer Submerged Plants during Their Optimal Performance Period in the Bioaccumulation of Lead: A Comparative Study

Zhang

Chen

et al. 2018

IJERPH

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“…Compared to the beginning of the test, the chlorophyll concentration in the V. natans leaves decreased by 36.99% at the end of the experiment. Chlorophyll plays an important role in the absorption of light energy during photosynthesis (Li et al 2018). There are two types of chlorophyll, designated as chlorophyll a and b (chl a and chl b), which differ slightly in chemical makeup and in color.…”

Section: Chlorophyll Of V Natans Leavesmentioning

confidence: 99%

“…Submerged macrophytes play an important role in aquatic ecosystems through accumulation and decomposition of contaminants and they are commonly used for river and lake restoration (Zhou et al 2012). Compared to free-floating macrophytes, submerged macrophytes can assimilate nutrients though the whole plant (Li et al 2018), release oxygen by photosynthesis, and supply nutrients and micro-niches for biofilms through their leaves (Michael et al 2008). Biofilms consists of a complex consortium of bacteria, algae, fungi, as well as other metazoans (Wu et al 2012) and they have a significant ecological function in modulating nutrient cycles and improving water quality (Gong et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Removal of nutrients from water column and physiological responses of Vallisneria natans under sulfonamide stress

Zhu

Wang

et al. 2019

Journal of Freshwater Ecology

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For a better understanding of the metabolic adaptations to sulfonamide (SA) stress in submerged macrophytes, the alterations of nutrient element uptake and secondary metabolism were studied in the leaves of Vallisneria natans (Lour.) Hara exposed to 0 and 50 mg/L of SA for 15 d. The results showed that, under a treatment of 50 mg/L SA, the malondialdehyde and superoxide anion (O 2 À) contents in V. natans leaves significantly increased, 1.77-3.32 times higher than the control group, respectively, while the chlorophyll concentration showed a 36.99% reduction at the end of experiment. Simultaneously, V. natans showed a removal effect on SA and SA dramatically affected the nutrient removal efficiency by V. natans. Our results suggest that high SA levels can damage V. natans tissue and in turn that results in a stimulation of the antioxidant response. V. natans significantly improved the removal efficiency of SA, meanwhile SA resulted in less removal of TN and TP from the water column.

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Simultaneous removal of Cd (II), Ni (II), and Pb (II) from water by a submerged macrophyte pondweed (Potamogeton malaianus)

Lyu

Zhang

et al. 2021

Water Environment Research

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The current work investigated the potential of submerged macrophyte pondweed (Potamogeton malaianus) in treating cadmium, nickel, and lead‐contaminated water through phytoremediation. The adsorption for the three metal ions occurred rapidly within 2 h and attained dynamic equilibrium in no more than 72 h. The removal efficiencies of Cd (II), Ni (II), and Pb (II) were high, passing 94% in both single‐ and multi‐metal systems. The kinetic adsorption curves of Cd (II), Ni (II), and Pb (II) were fitted well by both pseudo‐first‐order and pseudo‐second‐order kinetics (R2 = 0.9875–0.9995). The equilibrium adsorption capacities of Cd (II), Ni (II), and Pb (II) for P. malaianus were 6.29–6.97 mg kg−1. In plants, the higher concentration of each metal ions was accumulated in leaves (12.44–38.15 mg kg−1) than in roots (10.32–26.10 mg kg−1). The chlorophyll contents increased from 0.69 to 0.89–1.00 mg g−1 under the treatment of Cd (II), Ni (II), and Pb (II), whereas the chlorophyll a/b ratio was kept constant. There was no significant difference between single‐ and multi‐metal systems. FT‐IR spectra showed that COH and C═N might be involved in the adsorption of Cd (II), Ni (II), and Pb (II). This study demonstrated that P. malaianus could be a suitable submerged macrophyte for the simultaneous removal of Cd (II), Ni (II), and Pb (II) from water.

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The role of submerged macrophytes in phytoremediation of arsenic from contaminated water: A case study on Vallisneria natans (Lour.) Hara

Cited by 47 publications

References 48 publications

Defense Mechanisms of Two Pioneer Submerged Plants during Their Optimal Performance Period in the Bioaccumulation of Lead: A Comparative Study

Defense Mechanisms of Two Pioneer Submerged Plants during Their Optimal Performance Period in the Bioaccumulation of Lead: A Comparative Study

Removal of nutrients from water column and physiological responses of Vallisneria natans under sulfonamide stress

Simultaneous removal of Cd (II), Ni (II), and Pb (II) from water by a submerged macrophyte pondweed (Potamogeton malaianus)

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