Tolerance and distribution of cadmium in an ornamental species <i>Althaea rosea</i> Cavan

Huang, Ya‐Ping; Zu, Lihong; Zhang, Mei; Yang, Tong; Zhou, Mengjie; Shi, Cong; Shi, Fuchen; Zhang, Wenju

doi:10.1080/15226514.2019.1707771

Cited by 18 publications

(7 citation statements)

References 57 publications

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“…There was a general downward trend in the height and biomass of L. obtusifolium following an increase in soil Cd content, with varying degrees of suppression. A similar study by Huang, 2020, found that Calendula officinalis and Althaea rosea (L.) Cavan did not grow or produce biomass as their soil Cd content increased [49]. We found no significant differences in height, growth, or biomass accumulation between the treatment and control groups in our study when soil Cr content was up to 300 mg/kg in the T1 treatment group, indicating that L. obtusifolium could grow normally in soil with such soil Cr content.…”

Section: Effect Of Different Trace Elements On the Growth Of L Obtusi...supporting

confidence: 64%

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Effects of Different Trace Elements on Ecophysiological Characteristics of Ligustrum obtusifolium Saplings

Cao

Arif

Cui

et al. 2023

Forests

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Phytoremediation is becoming more prevalent globally. Literature on phytoremediation strategies in western China is relatively scarce. The present research sought to fill this gap by examining the effects of trace elements such as Cd, Cr, Pb, and Zn on growth, physiological traits, tolerances, and accumulation characteristics in 2-year-old saplings of Ligustrum obtusifolium. The gradient of trace element concentration was determined by adding exogenous trace elements to the soil in a pot experiment: CK (no exogenous trace element), T1, T2, and T3 (Cd 0, 2, 5, and 10 mg/kg; Cr 0, 300, 500, and 700 mg/kg; Pb 0, 400, 800, and 1200 mg/kg; and Zn 0, 300, 500, and 1000 mg/kg, respectively). The results indicated that Chla, Chlb, and total Chls significantly decreased (p < 0.05) in the leaves of L. obtusifolium, with the lowest value obtained during soil treatment with T3. Along with the increase in trace element concentration, the net increase in height, root biomass, aerial biomass, and total biomass was reduced significantly. The net growth of L. obtusifolium under Cr stress did not differ significantly from that of CK at T1; however, the net growth of L. obtusifolium under Cr stress was considerably reduced at T2 and T3. The antioxidant enzyme activity of L. obtusifolium increased under different trace element stresses and first increased and then decreased as trace element levels increased. It was found that the SOD, POD, CAT, and APX activity of L. obtusifolium peaks at T2 under Cd and Zn stress in contrast to a peak at T1 under Cr and Pb stress. The contents of trace elements in L. obtusifolium roots, stems, and leaves increased along with the increase in soil trace element levels. Cr, Pb, and Zn threshold values can be set at 300 mg/kg, 400 mg/kg, and 300 mg/kg, respectively. This is carried out by using a reference index of the biomass of L. obtusifolium decreased by 10%, while the Cd threshold value needs to be further studied. L. obtusifolium would be an appropriate plant for phytoremediation of Cr-polluted soil, compared to Cd, Pb, and Zn absorption and accumulation. It showed optimal antioxidant enzyme activity and transfer ability under soil Cr contents of 300 mg/kg, and the growth of L. obtusifolium was not restricted. Therefore, L. obtusifolium was particularly suitable for phytoremediation of Cr pollution in areas in western China.

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Section: Effect Of Different Trace Elements On the Growth Of L Obtusi...supporting

confidence: 64%

“…Plants are more sensitive to trace element toxicity, which increases the production of ROS. ROS include superoxide radicals, hydroxyl radicals, and hydrogen peroxide radicals [49]. Plants are affected by ROS that can damage their membranes, proteins, and nucleic acids [51].…”

Section: Antioxidant Enzyme Response To Trace Element Stress In L Obt...mentioning

confidence: 99%

Effects of Different Trace Elements on Ecophysiological Characteristics of Ligustrum obtusifolium Saplings

Cao

Arif

Cui

et al. 2023

Forests

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“…Shoot biomass is related to leaf area and, consequently, photosynthetic rates (Liu et al, 2018). Biomass is therefore a good indicator for characterizing the performance of ornamental plants exposed to contaminant stress (Huang et al, 2020). The biomass productions of both species tested here were not signi cantly affected by the presence of Enro in the irrigation water (Tables 1 and 2), indicating their tolerance to that pharmaceutical.…”

Section: Discussionmentioning

confidence: 74%

Pharmaceutical-contaminated irrigation water: implications for ornamental plant production and phytoremediation using enrofloxacin-accumulating species

Rocha,

Kochi,

Brito

et al. 2023

Environ Sci Pollut Res

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Enro oxacin (Enro) has been widely encountered in natural water sources, and that water is often used for irrigation in crop production systems. Due to its phytotoxicity and accumulation in plant tissues, the presence of Enro in water used for crop irrigation may represent economical and toxicological concerns.Here, we irrigated two ornamental plant species (Zantedeschia rehmannii and Spathiphyllum wallisii) with water arti cially contaminated with the antimicrobial enro oxacin (Enro; 0, 5, 10, 100 and 1000 µg L − 1 ) to evaluate its effects on ornamental plant production, as well as its accumulation and distribution among different plant organs (roots, leaves, bulbs, and ower stems), and examined the economic and environmental safety of commercializing plants produced under conditions of pharmaceutical contamination. The presence of Enro in irrigation water was not found to disrupt plant growth (biomass) or ower production. Both species accumulated Enro, with its internal concentrations distributed as following: roots > leaves > bulbs > ower stems. In addition to plant tolerance, the content of Enro in plant organs indicated that both Z. rehmannii and S. wallisii could be safety produced under Enrocontaminated conditions and would not signi cantly contribute to contaminant transfer. The high capacity of those plants to accumulate Enro in their tissues, associated with their tolerance to it, indicates them for use in Enro-phytoremediation programs.

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“…Plants are known to accumulate higher quantities of hydrogen peroxide (H 2 O 2 ) as both a defensive measure against heavy metal damage and a direct result of the damage in the form of oxidative stress (Singh et al 2007; Opdenakker et al 2012; Huang et al 2020). The trend of increasing H 2 O 2 content in S. occidentalis followed by increasing heavy metal treatment demonstrates the enhanced production of H 2 O 2 during heavy metal stress.…”

Section: Discussionmentioning

confidence: 99%

Differential response ofSenna occidentalisL. to arsenic and cadmium contaminated soil

Lai,

Datir,

Weber

et al. 2023

Preprint

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We investigated the phytoremediation potential ofSenna occidentalisL., a pantropical plant that has been associated with tolerance to heavy metal-contaminated soils around mining sites. Seedlings ofS. occidentaliswere exposed to cadmium chloride (CdCl2) and sodium arsenate (Na3AsO4) at concentrations of 200, 300, and 400 mg L-1under greenhouse conditions. Heavy metal tolerance was assessed by comparing biomass and stress indicators such as chlorophyll, proline, and hydrogen peroxide content. Arsenic treatment had more toxic effects than cadmium onSennaphysiology. Regardless of concentration of arsenic applied, the biomass decreased by 50% as compared to control and cadmium-treated plants. Chlorophyll content decreased with exposure to both heavy metals. Higher concentration of Cd and As (400 mg L-1) resulted in 50% reduction in chlorophyll content. Proline and hydrogen peroxide levels were higher in arsenic-treated plants compared to controls and cadmium-treated plants, indicating an enhanced stress response when exposed to arsenic. When heavy metal content was measured, there was a significant accumulation of arsenic in the leaves, stems, and roots, indicating that arsenic in these tissues was responsible for the profound changes in biomass, proline, and hydrogen peroxide content. In contrast, although significant, there was less cadmium uptake bySennaand tolerance can be seen, which was reflected by normal biomass, proline, and hydrogen peroxide levels. High translocation of metals from soil into roots and low translocation from root to shoot tissues suggests the potential forS. occidentalisto be used for phytostabilization of arsenic- and cadmium-contaminated soils.

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Tolerance and distribution of cadmium in an ornamental species Althaea rosea Cavan

Cited by 18 publications

References 57 publications

Effects of Different Trace Elements on Ecophysiological Characteristics of Ligustrum obtusifolium Saplings

Effects of Different Trace Elements on Ecophysiological Characteristics of Ligustrum obtusifolium Saplings

Pharmaceutical-contaminated irrigation water: implications for ornamental plant production and phytoremediation using enrofloxacin-accumulating species

Differential response ofSenna occidentalisL. to arsenic and cadmium contaminated soil

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