Response of plant element traits to soil arsenic stress and its implications for vegetation restoration in a post-mining area

Chen, Rui; Han, Lei; Zhao, Yonghua; Liu, Zhao; Fan, Yamin; Li, Risheng; Xia, Longfei

doi:10.1016/j.ecolind.2023.109931

Cited by 9 publications

(5 citation statements)

References 42 publications

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“… 75 Under heavy metal stress, rice plants and other plants also show decreased chlorophyll content. 76 However, the application of SA and GABA has been found to help mitigate chlorophyll degradation in As-stressed plants ( Table 3 ). Studies have shown that in lettuce plants under metal stress, the application of SA and GABA enhances photosynthetic activity and increases photosynthetic pigments, leading to an overall improvement in photosynthetic activity.…”

Section: Discussionmentioning

confidence: 99%

Salicylic Acid and Gemma-Aminobutyric Acid Mediated Regulation of Growth, Metabolites, Antioxidant Defense System and Nutrient Uptake in Sunflower (Helianthus annuus L.) Under Arsenic Stress

Nawaz,

Hussain,

Mahmood-ur-Rehman

et al. 2024

Dose-Response

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Background Arsenic (As) is a highly toxic and carcinogenic pollutant commonly found in soil and water, posing significant risks to human health and plant growth. Objective The objectives of this study to evaluate morphological, biochemical, and physiological markers, as well as ion homeostasis, to alleviate the toxic effects of As in sunflowers through the exogenous application of salicylic acid (SA), γ-aminobutyric acid (GABA), and their combination. Methods A pot experiment was conducted using two sunflower genotypes, FH-779 and FH-773, subjected to As stress (60 mg kg−1) to evaluate the effects of SA at 100 mg L−1, GABA at 200 mg L−1, and their combination on growth and related physiological and biochemical attributes under As stress. Results The study revealed that As toxicity had a detrimental effect on various growth parameters, chlorophyll pigments, relative water content, total proteins, and nutrient uptake in sunflower plants. It also led to increased oxidative stress, as indicated by higher levels of malondialdehyde (MDA) and hydrogen peroxide (H2O2), along with As accumulation in the roots and leaves. However, the application of SA and GABA protected against As-induced damage by enhancing the enzymatic antioxidant defense system. This was achieved through the activation of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities, as well as an increase in osmolytes. They also improved nutrient acquisition and plant growth under As toxicity. Conclusions We investigated the regulatory roles of SA and GABA in mitigating arsenic-induced phytotoxic effects on sunflower. Our results revealed a significant interaction between SA and GABA in regulating growth, photosynthesis, metabolites, antioxidant defense systems, and nutrient uptake in sunflower under As stress. These findings provide valuable insights into plant defense mechanisms and strategies to enhance stress tolerance in contaminated environments. In the future, SA and GABA could be valuable tools for managing stress in other important crops facing abiotic stress conditions.

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Section: Discussionmentioning

confidence: 99%

Salicylic Acid and Gemma-Aminobutyric Acid Mediated Regulation of Growth, Metabolites, Antioxidant Defense System and Nutrient Uptake in Sunflower (Helianthus annuus L.) Under Arsenic Stress

Nawaz,

Hussain,

Mahmood-ur-Rehman

et al. 2024

Dose-Response

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“…Soil physicochemical properties play a certain role in the process of plant enrichment of As [ 69 ]. Among the soil As characteristics, the mild acidosoluble As and water-soluble As have a high bioavailability and mobility and are the principal speciations taken up by plants [ 42 ]. Consequently, as their concentration grows, so does plant absorption of As.…”

Section: Discussionmentioning

confidence: 99%

“…Soil bulk density (SBD) and soil water content (SWC) were measured using the ring knife method [ 40 ] and the gravimetric method [ 41 ], respectively. The soil organic matter (SOM), soil total potassium (STK), soil available potassium (SAK), soil total phosphorus (STP), soil available phosphorus (SAP), soil total nitrogen (STN), and soil alkaline nitrogen (SAN) were determined following Chen [ 42 ]. The As concentration in plants was digested using a microwave digestion device and measured using an atomic fluorescence photometer [ 43 ].…”

Section: Methodsmentioning

confidence: 99%

Characteristics of Soil Arsenic Contamination and the Potential of Pioneer Plants for Arsenic Remediation in Gold Mine Tailings

Han,

Zhai,

Chen

et al. 2023

Toxics

Self Cite

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Arsenic (As) contamination of gold mine tailings poses major threats to the natural environment and human health, necessitating adequate management measures. To investigate the soil As contamination level and the potential of pioneer plants for As remediation, the soil and plants of an abandoned gold mine tailings in the Qinling Mountains were analyzed. The level of As contamination was assessed using the single-factor pollution index and potential ecological risk index, and its bioeffectiveness was analyzed. The enrichment capability of plants was investigated using the bioaccumulation factor and translocation factor. Redundancy analysis and partial least squares regression were employed to investigate factors affecting the distribution of As in soil and plants. The results show that As in soil mainly existed in the difficult-available state, with serious contamination and extremely high ecological risk. Lythrum salicaria L. and Equisetum ramosissimum Desf. are the preferred plants for remediation of As contamination through screening pioneer plants. Soil total nitrogen (STN) and available phosphorus (SAP) are the main factors influencing the characteristics of As distribution in the soil. Soil available potassium (SAK), water content (SWC), and SAP promote the accumulation of As by plants. This study provides plant materials and new ideas for mine ecological remediation.

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“…However, the restored vegetation in the mining area is still in the primary stages of succession. More plants lacking phosphorus are growing as the reclamation duration increases and the soil quality index increases [50]. SMC and silt (physical indicators) significantly impact soil quality.…”

Section: The Dominant Factor Analysis Of Soil Quality Changementioning

confidence: 99%

Soil Quality Evaluation and Driving Factor Analysis of Hippophae rhamnoides Plantations in Coal Mine Reclamation Areas Based on Different Restoration Durations

Ren

Liu

et al. 2023

Forests

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The driving factors affecting soil quality were identified to evaluate the effect of vegetation on soil quality in coal mine reclamation areas with various restoration durations. This study used Hippophae rhamnoides subsp.sinensis Rousi with different reclamation durations (3, 4, 5, 6, and 7 years) in the abandoned land area of the Juxinlong coal mine in Ordos as the research subject. Artificial and abandoned grasslands were selected as the study’s controls. A soil quality evaluation model was constructed to assess the soil quality in the reclamation area. A structural equation model was used to thoroughly analyze the driving factors affecting soil quality in the study area. The findings show that: (1) Reclamation duration significantly affected the physicochemical characteristics of the soil. As the reclamation duration increased, soil nutrients such as organic carbon accumulated while the bulk density index (BD) decreased. (2) The soil quality index of Hippophae rhamnoides forest land in China was the highest after 6 years of reclamation. The Hippophae rhamnoides forest land with the lowest soil quality index after 4 years of reclamation differed significantly from that after 6 years (p < 0.05). The soil quality index (SQI) of 6a (years) significantly increased by 67.44% compared to 4a. (3) By constructing a structural equation model, it was found that physical indicators (saturated water content and silt) and reclamation durations were the main drivers of soil quality. SQI had a strong interaction with organic matter (OM) and different restoration durations. The findings of this study will serve as important guidelines for future quantitative evaluation of soil quality following land reclamation and management during the ecological restoration process.

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Response of plant element traits to soil arsenic stress and its implications for vegetation restoration in a post-mining area

Cited by 9 publications

References 42 publications

Salicylic Acid and Gemma-Aminobutyric Acid Mediated Regulation of Growth, Metabolites, Antioxidant Defense System and Nutrient Uptake in Sunflower (Helianthus annuus L.) Under Arsenic Stress

Salicylic Acid and Gemma-Aminobutyric Acid Mediated Regulation of Growth, Metabolites, Antioxidant Defense System and Nutrient Uptake in Sunflower (Helianthus annuus L.) Under Arsenic Stress

Characteristics of Soil Arsenic Contamination and the Potential of Pioneer Plants for Arsenic Remediation in Gold Mine Tailings

Soil Quality Evaluation and Driving Factor Analysis of Hippophae rhamnoides Plantations in Coal Mine Reclamation Areas Based on Different Restoration Durations

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