Tolerance and bioaccumulation of Cd and Cu in Sesuvium portulacastrum

Feng, Jianxiang; Yang, Lin; Yang, Ying; Shen, Qianqian; Huang, Jianrong; Wang, Shugong; Zhu, Xiaoshan; Li, Zufu

doi:10.1016/j.ecoenv.2017.08.056

Cited by 65 publications

(28 citation statements)

References 27 publications

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“…A similar rise of fresh shoots weight was also observed by Shah et al [25] in shisham ( Dalbergia sissoo Roxb .). The Cd toxicity in plants has been a subject of numerous investigations [26,27]. Unfortunately it is species dependent and the final conclusions are often contradictory and by all means are far from clarity [28,29].…”

Section: Resultsmentioning

confidence: 99%

Associated Effects of Cadmium and Copper Alter the Heavy Metals Uptake by Melissa Officinalis

et al. 2019

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Lemon balm (Melissa officinalis) is a popular herb widely used in medicine. It is often cultivated in soils with substantial heavy metal content. Here we investigate the associated effects of cadmium and copper on the plant growth parameters augmented by the manganese, zinc, and lead uptake indicators. The concentration of all elements in soil and plants was determined by the HR-CS FAAS with the ContrAA 300 Analytik Jena spectrometer. Bioavailable and total forms calculated for all examined metals were augmented by the soil analyses. The index of chlorophyll content in leaves, the activity of net photosynthesis, stomatal conductance, transpiration rate, and intercellular concentration of CO2 were also investigated. Either Cd or Cu acting alone at high concentrations in soil are toxic to plants as indicated by chlorophyll indices and gas exchange parameters. Surprisingly, this effect was not observed when both metals were administered together. The sole cadmium or copper supplementations hampered the plant’s growth, lowered the leaf area, and altered the plant’s stem elongation. Analysis of variance showed that cadmium and copper treatments of lemon balm significantly influenced manganese, lead, and zinc concentration in roots and above ground parts.

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Section: Resultsmentioning

confidence: 99%

Associated Effects of Cadmium and Copper Alter the Heavy Metals Uptake by Melissa Officinalis

et al. 2019

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“…Salvia sclarea exhibited high accumulation capacity for Cd, and by limiting its translocation from roots to shoots, it may be considered a potential phytostabilizer that can be used in heavy metal contaminated environments. Other plant species that have been proposed as Cd phytostabilizers are Iris lactea [75] and Sesuvium portulacastrum [79,80].…”

Section: Discussionmentioning

confidence: 99%

Rapid Hormetic Responses of Photosystem II Photochemistry of Clary Sage to Cadmium Exposure

Adamakis

Sperdouli

Hańć

et al. 2020

IJMS

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Five-day exposure of clary sage (Salvia sclarea L.) to 100 μM cadmium (Cd) in hydroponics was sufficient to increase Cd concentrations significantly in roots and aboveground parts and affect negatively whole plant levels of calcium (Ca) and magnesium (Mg), since Cd competes for Ca channels, while reduced Mg concentrations are associated with increased Cd tolerance. Total zinc (Zn), copper (Cu), and iron (Fe) uptake increased but their translocation to the aboveground parts decreased. Despite the substantial levels of Cd in leaves, without any observed defects on chloroplast ultrastructure, an enhanced photosystem II (PSII) efficiency was observed, with a higher fraction of absorbed light energy to be directed to photochemistry (ΦPSΙΙ). The concomitant increase in the photoprotective mechanism of non-photochemical quenching of photosynthesis (NPQ) resulted in an important decrease in the dissipated non-regulated energy (ΦNO), modifying the homeostasis of reactive oxygen species (ROS), through a decreased singlet oxygen (1O2) formation. A basal ROS level was detected in control plant leaves for optimal growth, while a low increased level of ROS under 5 days Cd exposure seemed to be beneficial for triggering defense responses, and a high level of ROS out of the boundaries (8 days Cd exposure), was harmful to plants. Thus, when clary sage was exposed to Cd for a short period, tolerance mechanisms were triggered. However, exposure to a combination of Cd and high light or to Cd alone (8 days) resulted in an inhibition of PSII functionality, indicating Cd toxicity. Thus, the rapid activation of PSII functionality at short time exposure and the inhibition at longer duration suggests a hormetic response and describes these effects in terms of “adaptive response” and “toxicity”, respectively.

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“…Salvia sclarea exhibited high accumulation capacity for Cd and by limiting its translocation from roots to shoots may be considered a potential phytostabilizer that can be used in heavy metal contaminated environments. Other plant species that have been proposed as Cd phytostabilizers are Iris lactea [82] and Sesuvium portulacastrum [86,87].…”

Section: Discussionmentioning

confidence: 99%

Rapid Hormetic Responses of Photosystem II Photochemistry to Cadmium Exposure

Is¹,

Sperdouli²,

Hańć³

et al. 2020

Preprint

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Five-day exposure of clary sage (Salvia sclarea) to 100 μM cadmium (Cd) in hydroponics was sufficient to increase Cd concentrations significantly in roots and aboveground parts and affect negatively whole plant levels of calcium (Ca) and magnesium (Mg), since Cd competes for Ca channels, while reduced Mg concentrations are associated with increased Cd tolerance. Total zinc (Zn), copper (Cu), and iron (Fe) uptake increased but their translocation to the aboveground parts decreased possible due to translocation barriers. Despite the substantial levels of Cd in leaves, without any observed defects on chloroplast ultrastructure, an enhanced photosystem II (PSII) efficiency was observed, with a higher fraction of absorbed light energy to be directed to photochemistry (ΦPSΙΙ). The concomitant increase in the photoprotective mechanism of non-photochemical quenching of photosynthesis (NPQ) resulted in an important decrease in the dissipated non-regulated energy (ΦNO), modifying the homeostasis of reactive oxygen species (ROS), through a decreased singlet oxygen (1O2) formation. Thus, when clary sage was exposed to Cd for a short period, tolerance mechanisms were triggered, with PSII photochemistry to be regulated by NPQ in such a way that PSII efficiency to be enhanced. However, exposure to a combination of Cd and high light or for longer duration (8 days) to Cd alone, resulted in an inhibition of PSII functionality pointing out towards Cd toxicity. Thus, the rapid activation of PSII functionality at short time exposures and the inhibition at longer duration suggests a hormetic response and describes these effects in terms of “adaptive response” and “toxicity”, respectively.

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Tolerance and bioaccumulation of Cd and Cu in Sesuvium portulacastrum

Cited by 65 publications

References 27 publications

Associated Effects of Cadmium and Copper Alter the Heavy Metals Uptake by Melissa Officinalis

Associated Effects of Cadmium and Copper Alter the Heavy Metals Uptake by Melissa Officinalis

Rapid Hormetic Responses of Photosystem II Photochemistry of Clary Sage to Cadmium Exposure

Rapid Hormetic Responses of Photosystem II Photochemistry to Cadmium Exposure

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