Alleviation of cadmium toxicity in cucumber (Cucumis sativus) seedlings by the application of selenium

Sun, Hongyan; Wang, Xiaoyun; Wang, Yuna; Wei, Yiying; Wang, Guohui

doi:10.5424/sjar/2016144-10008

Cited by 23 publications

(6 citation statements)

References 47 publications

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“…In the current experiment, Cd toxicity markedly reduced the growth attributes of cowpea plants, including shoot length, shoot biomass and leaf area. These results are in conformity with the previous findings on different plant species (Jhanji et al, 2012;Perveen et al, 2016;Sun et al, 2016;Chen et al, 2018). Nonetheless, seed priming with Pro or GB, especially 50mM Pro, improved all measured growth parameters under Cd stress.…”

Section: Discussionsupporting

confidence: 93%

“…On the other hand, pretreatment of cowpea seeds with Pro or GB improved stomatal conductance under Cd stress conditions. In conformity with these findings, there are several reports that Cd strongly induced closure of stomata in different plant species (Shamsi et al, 2008;Sun et al, 2016;Sadeghipour, 2018). Under Cd stress, stomata were closed independently regardless of the water status.…”

Section: Discussionsupporting

confidence: 77%

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Cadmium Toxicity Alleviates by Seed Priming with Proline or Glycine Betaine in Cowpea ( Vigna unguiculata (L.) Walp.)

Sadeghipour

2020

Egypt. J. Agron.

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C ADMIUM (Cd) as a non-essential metal is a soil pollutant that inhibits plant growth and development. Proline (Pro) and Glycine betaine (GB) are two important compatible solutes that accumulate in response to abiotic stresses in different plant species. Here, a pot experiment was carried out to assess the role of exogenously applied Pro and GB in improving Cd toxicity tolerance in cowpea plants. Seeds were soaked in 0, 25 and 50mM Pro or GB, and then were sown in plastic pots that were irrigated with 0 or 100µM cadmium chloride. Results showed that Cd stress markedly decreased shoot length, shoot biomass, leaf area, chlorophyll value, stomatal conductance and relative water content (RWC) but increased root and shoot Cd levels, malondialdehyde (MDA) content and antioxidant enzyme activities such as superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX). Nevertheless, seed treatment with Pro or GB reduced Cd toxicity and improved growth attributes via reducing Cd uptake and translocation, increasing the chlorophyll value, stomatal conductance, and RWC as well as more enhancing the activities of antioxidant enzymes and lowering the MDA level. Although both Pro and GB were effective, pre-treatment of seeds with Pro improved Cd stress tolerance better than GB. Thus, seed treatment with Pro (especially 50mM) could be used as an effective method for protecting cowpea plants against Cd toxicity.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 77%

Cadmium Toxicity Alleviates by Seed Priming with Proline or Glycine Betaine in Cowpea ( Vigna unguiculata (L.) Walp.)

Sadeghipour

2020

Egypt. J. Agron.

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“…Indeed, the inhibitory effects varied according to plant age, duration of exposure, heavy metal concentration, and type of heavy metal ( Sytar et al., 2019 ; Ahmad et al., 2020 ). In line with our findings, Cd also reduced the growth of other plant species ( EL-Okkiah, 2015 ; Perveen et al., 2016 ; Sun et al., 2016 ; Chen et al., 2019 ). In this regard, Cd stress inhibits root and stem cell growth by inhibiting cell elongation and cell division via an inhibition activity of the glycolysis pathway ( Dalla Vecchia et al., 2005 ).…”

Section: Discussionsupporting

confidence: 91%

“…Here, Cd strongly induced stomatal closure and decreased stomatal conductance in pea leaves. In line with these findings, several studies have found that Cd strongly induces stomatal closure in different plant species ( Sun et al., 2016 ; Sadeghipour, 2018 ). Stomata closed individually under Cd stress, regardless of water status.…”

Section: Discussionsupporting

confidence: 57%

Under cadmium stress, silicon has a defensive effect on the morphology, physiology, and anatomy of pea (Pisum sativum L.) plants

et al. 2022

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Soil pollution with cadmium (Cd) is a serious threat to plant growth and development. On the other hand, silicon (Si) can support plants to cope with Cd stress. However, the Cd stress mitigating impact of Si reduction in pea (Pisum sativum L.) is not known. The objective of this study is to see if and how Si can reduce Cd toxicity. To the end, a greenhouse pot experiment was performed twice during the 2018/2019 and 2019/2020 seasons to investigate the effect of Si on the growth, anatomy, and biochemistry of Cd stressed peas plants. Cd exposure increased the contents of Cd ions in the root and shoot of pea plants. Consequentially, Cd accumulation in pea tissue significantly reduced plant growth i.e., plant height, leaf area, and shoot and root dry weights. The effect of Cd was concentration-dependent, where at low concentration (50 mg/kg soil), the plant height was 94.33 and 97.33cm and at high concentration (100 mg/kg soil), it was 89.0 and 91.0 cm in the two seasons, respectively. This growth reduction can be explained by the decrease in plants’ photosynthesis, whereas plants exposed to Cd toxicity had lower chlorophyll levels. At the anatomy level, high Cd concentrations resulted in anatomical abnormalities such as an unusual vascular system, abnormal lignification in the pith parenchyma, and enlarged cortical cells. Moreover, all Cd concentrations resulted in a highly significant decrease in stomatal area and stomatal density (the number of stomata per mm2). In addition to growth inhibition, Cd-induced oxidative damage to pea plants as indicated by increased hydrogen peroxide (H2O2) and Malondialdehyde (MDA) levels. To reduce stress toxicity, plants treated with Cd at 50 and 100 (mg/kg) showed a significant increase in antioxidant capacity. Peroxidase (POD) enzyme activity was significantly increased by 41.26%, 28.64%, 77.05%, and 60.77% in both seasons, respectively. Si at 300 ppm under Cd (100 mg/kg) stress conductions considerably reduced (MDA) contents by 29.02% and 29.12%, in the two seasons, respectively. The findings pointed out that Si’s ability to protect pea against the oxidative stress caused by Cd toxicity.

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“…A factorial experiment was designed with three replications including two levels of cadmium (control, 0.0 and toxic Cd, 0.10 mM) as cadmium chloride (CdCl 2 ) combined with donors of NO or H 2 S, 0.10 mM sodium nitroprusside (SNP) or 0.20 mM sodium hydrosulfide (NaHS) supplied in nutrient solution. The toxic level of Cd was chosen based on the work of López‐Millán et al (), Sun et al () and Kaya et al () in which 0.1 mM Cd was used for tomato, cucumber and wheat plants, respectively. The doses SNP and NaHS were selected based on the available literature.…”

Section: Methodsmentioning

confidence: 99%

Responses of nitric oxide and hydrogen sulfide in regulating oxidative defence system in wheat plants grown under cadmium stress

Kaya

Ashraf

Alyemeni

et al. 2019

Physiologia Plantarum

214

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We conducted a study to evaluate the interactive effect of NO and H2S on the cadmium (Cd) tolerance of wheat. Cadmium stress considerably reduced total dry weight, chlorophyll a and b content and ratio of Fv/Fm by 36.7, 48.6, 26.7 and 19.5%, respectively, but significantly enhanced the levels of hydrogen peroxide (H2O2) and malondialdehyde (MDA), endogenous H2S and NO, and the activities of antioxidant enzymes. Exogenously applied sodium nitroprusside (SNP) and sodium hydrosulfide (NaHS), donors of NO and H2S, respectively, enhanced total plant dry matter by 47.8 and 39.1%, chlorophyll a by 92.3 and 61.5%, chlorophyll b content by 29.1 and 27.2%, Fv/Fm ratio by 19.7 and 15.2%, respectively, and the activities of antioxidant enzymes, but lowered oxidative stress and proline content in Cd‐stressed wheat plants. NaHS and SNP also considerably limited both the uptake and translocation of Cd, thereby improving the levels of some key mineral nutrients in the plants. Enhanced levels of NO and H2S induced by NaHS were reversed by hypotuarine application, but they were substantially reduced almost to 50% by cPTIO (a NO scavenger) application. Hypotuarine was not effective, but cPTIO was highly effective in reducing the levels of NO and H2S produced by SNP in the roots of Cd‐stressed plants. The results showed that interactive effect of NO and H2S can considerably improve plant resistance against Cd toxicity by reducing oxidative stress and uptake of Cd in plants as well as by enhancing antioxidative defence system and uptake of some essential mineral nutrients.

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Alleviation of cadmium toxicity in cucumber (Cucumis sativus) seedlings by the application of selenium

Cited by 23 publications

References 47 publications

Cadmium Toxicity Alleviates by Seed Priming with Proline or Glycine Betaine in Cowpea ( Vigna unguiculata (L.) Walp.)

Cadmium Toxicity Alleviates by Seed Priming with Proline or Glycine Betaine in Cowpea ( Vigna unguiculata (L.) Walp.)

Under cadmium stress, silicon has a defensive effect on the morphology, physiology, and anatomy of pea (Pisum sativum L.) plants

Responses of nitric oxide and hydrogen sulfide in regulating oxidative defence system in wheat plants grown under cadmium stress

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