Effects of Heavy Metal Pb and Cd Stress on Physiological Characteristics of Japanese Honeysuckle

Mao, Xue

doi:10.15666/aeer/1703_64156427

Cited by 6 publications

(5 citation statements)

References 24 publications

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“…The protein content of A bisporus in the closed cup stage was higher than that in the flat stage, while the soluble sugar content had the opposite change. The reason might be that under heavy metal stress, the absorption of some essential ions is weakened, resulting in the accelerated decomposition of substances such as starch, protein, and nucleic acids 39 . The decomposition of starch results in an increase in soluble sugar content.…”

Section: Resultsmentioning

confidence: 99%

“…Similar results were found in rice under Zn or Cr stress 35 . Soluble sugar, as the main osmotic agent, has a stabilizing effect on the cell membrane and protoplasmic colloid under heavy metals stress 39 . Most of the previous reports have found the content of soluble sugar in the body increased under heavy metals stress 35,40 .…”

Section: Effect Of CD Stress On the Cd Bioaccumulation Bcf And Tf In ...mentioning

confidence: 99%

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Bioaccumulation and physiological changes in the fruiting body of Agaricus bisporus (Large) sing in response to cadmium

Zhang

Gao

2022

Sci Rep

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The bioremediation of heavy metals contaminated soils with macrofungi is a new and promising approach; hence Agaricus bisporus (Large) sing has potentially shown accumulating ability to Cd contamination. This study focused on the tolerance response by A. bisporus to different contents of Cd in the closed cup and the flat stage of fruiting body development. The contents of Cd, soluble protein, sugar, low molecular weight organic acids (LMWOAs), and antioxidant activity were investigated. The bioaccumulation factor and transfer factor results revealed that Cd accumulated in the cap of A. bisporus more than that in the stipe with the highest content being 18.38 mg kg−1 dry weight at the closed cup stage under 414.28 mg kg−1 Cd stress. High Cd content stress increased soluble protein, proline, and malonaldehyde contents at both stages; while higher peroxidase, catalase, ascorbic acid peroxidase activities, and LMWOAs contents were only recorded at the closed cup stage. On the other hand, Superoxide dismutase activities and soluble sugar content showed a complex trend. Overall, these results have successfully established that A. bisporus could resort to modulating its metabolism to avoid the destructive effects of Cd stress and could successfully accumulate Cd in the soil, which is a promising prospect for the remediation of Cd-contaminated soils.

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of CD Stress On the Cd Bioaccumulation Bcf And Tf In ...mentioning

confidence: 99%

Bioaccumulation and physiological changes in the fruiting body of Agaricus bisporus (Large) sing in response to cadmium

Zhang

Gao

2022

Sci Rep

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“…4). Although many experiments showed that the activity of SOD increased with the concentration of Cd and PB under single and combined stress, some previous studies also showed that Pb or Cd inhibited the SOD activity, who concluded that it may be the dynamic balance of ROS is broken by the excessive accumulation of ROS under elevated concentrations of heavy metal stress in plants [48,49]. Heavy metals could produce severe toxicity symptoms which destroyed the antioxidant enzyme system in plants.…”

Section: Discussionmentioning

confidence: 99%

Single and Combined Effects of Cadmium and Lead on Seed Germination and Early Seedling Growth in <i>Rhus typhina</i>

Qu¹,

Peng²,

Yang³

et al. 2020

Pol. J. Environ. Stud.

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Cadmium (Cd) and lead (Pb) generally occur simultaneously with low concentration in soil. However, anthropogenic activities have significantly raised these non-biodegradable heavy metals and caused long-term deleterious effects on ecosystem health. To study single or combined effects of Cd and Pb on seed germination, early seedling growth and physiological response in Rhus typhina, a seed germination and sand culture experiment was established completely randomized with 0, 100, 300, and 500 mg•L -1 Pb(NO 3 ) 2 or 0, 25, 75, 125 mg•L -1 CdCl 2 individually or in combination. The present results showed seed germination and seedling growth of Rhus typhina decreased with increasing Cd and Pb, and the joint effect was more serious than single heavy metal stress. The lowest of seed germination rate (GR), germination index (GI), root length (RL) and shoot length (SL) in Rhus typhina decreased 65.85%, 73.46%, 84.33% and 61.95% compared to control in soil supplemented with combined Cd and Pb, respectively. The activity of superoxide dismutase (SOD), peroxidase (POD), malondialdehyde (MDA) and soluble protein (SP) changed significantly with increasing concentration of Cd and Pb, and MDA and POD played important roles in resisting Cd and Pb stress because of their significant correlation with seed germination and early seedling growth.

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“…The toxic excitation effect is a plant phenomenon that can be characterized by an inverse U-shaped curve in which modest concentrations of hazardous chemicals have a stimulatory impact [40]. Hon-eysuckle has been shown to alleviate the effects of heavy metal stress on plant metabolic disorders by boosting leaf osmoregulatory chemicals and triggering the reactive oxygen species scavenging mechanism under a specified range of heavy metal stresses [41]. Ginkgo biloba L. activated this mechanism to cause harmful excitatory effects in response to low concentrations of Pb and Cd stress in this investigation.…”

Section: Changes In Net Photosynthetic Ratementioning

confidence: 99%

Physiological Response of Two Typical Plant Species under Combined Pb and Cd Stress in Bioretention Facilities

Gong

Zhou

et al. 2022

Water

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Bioretention facilities reduce stormwater runoff and pollutants, but there is a concern that plants in bioretention facilities may absorb heavy metal pollutants from stormwater runoff, which might impair the growth of the plant species. To investigate this issue, stormwater runoff containing various amounts of Pb and Cd heavy metals was used as the irrigation water in a bioretention facility. The low concentrations of Pb and Cd were 0.08 and 0.04 mg/L, and the high values were 0.68 and 0.32 mg/L. The plant heavy metal content and physiological indicators were measured. The indicators were chlorophyll content (CC), net photosynthetic rate (NPR), and transpiration rate (TR). The results showed that the changes in plant chlorophyll content (CC) were highly correlated with changes in the plants’ Pb. Low concentrations of Pb and Cd slightly inhibited the Ginkgo biloba L. and Ligustrum × vicaryi NPRs, the effect was more obvious at high concentrations and the Ligustrum × vicaryi’s NPR decreased from the initial 8.97 μmol CO2/(m2s) to 5.77 μmol CO2/(m2s) under high concentration conditions. Pb and Cd increased the Ginkgo biloba L. and Ligustrum × vicaryi’s TRs, and the effect at low Pb and Cd concentrations was more significant. Under low concentrations of Pb and Cd stress, the Ginkgo biloba L.’s TRs reached 0.63 mmol H2O/(m2s), Ligustrum × vicaryi’s TRs reached 1.30 mmol H2O/(m2s). The TRs of the two plants in the experimental groups remained high throughout the experiment, and there was no significant inhibition. The study found that Pb and Cd in stormwater runoff did affect the physiological function of species to some extent. Different plant species behaved differently in bioretention facilities, but the stormwater runoff did not lead to the death of species. Our study may provide a better understanding of the development of typical plant species in bioretention facilities.

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Effects of Heavy Metal Pb and Cd Stress on Physiological Characteristics of Japanese Honeysuckle

Cited by 6 publications

References 24 publications

Bioaccumulation and physiological changes in the fruiting body of Agaricus bisporus (Large) sing in response to cadmium

Bioaccumulation and physiological changes in the fruiting body of Agaricus bisporus (Large) sing in response to cadmium

Single and Combined Effects of Cadmium and Lead on Seed Germination and Early Seedling Growth in <i>Rhus typhina</i>

Physiological Response of Two Typical Plant Species under Combined Pb and Cd Stress in Bioretention Facilities

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