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Boersma PJ, Lagugné-Labarthet F, McDowell T, Macfie SM. Silver nanoparticles inhibit nitrogen fixation in soybean (Glycine max) root nodules. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:32014-32031. [PMID: 36456673 DOI: 10.1007/s11356-022-24446-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Antimicrobial silver nanoparticles (AgNPs) are popular in consumer and industrial products, leading to increasing concentrations in the environment. We tested whether exposure to AgNPs could be detrimental to a microbe, its host plant, and their symbiotic relationship. When subjected to 10 µg/mL AgNPs, growth of Bradyrhizobium japonicum USDA 110 was halted. Axenic nitrogen-fertilized Glycine max seedlings were unaffected by 2.5 µg/mL of 30 nm AgNPs, but growth was inhibited with the same dose of 16 nm AgNPs. With 2.5 µg/mL AgNPs, biomass of inoculated plants was 50% of the control. Bacteroids were not found in nodules on plants treated with 2.5 µg/mL AgNPs and plants given 0.5-2.5 µg/mL AgNPs had 40-65% decreased nitrogen fixation. In conclusion, AgNPs not only interfere with general plant and bacterial growth but also inhibit nodule development and bacterial nitrogen fixation. We should be mindful of not releasing AgNPs to the environment or to agricultural land.
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Affiliation(s)
- Paul J Boersma
- Department of Biology, University of Western Ontario, London, ON, N6A 5B7, Canada
| | - François Lagugné-Labarthet
- Department of Chemistry, University of Western Ontario, London, ON, N6A 3K7, Canada
- Centre for Advanced Material and Biomaterial Research (CAMBR), University of Western Ontario, London, ON, N6A 3K7, Canada
| | - Tim McDowell
- London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St., London, ON, N5V 4T3, Canada
| | - Sheila M Macfie
- Department of Biology, University of Western Ontario, London, ON, N6A 5B7, Canada.
- Centre for Advanced Material and Biomaterial Research (CAMBR), University of Western Ontario, London, ON, N6A 3K7, Canada.
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2
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Tunçtürk M, Rezaee Danesh Y, Tunçtürk R, Oral E, Najafi S, Nohutçu L, Jalal A, da Silva Oliveira CE, Filho MCMT. Safflower ( Carthamus tinctorius L.) Response to Cadmium Stress: Morpho-Physiological Traits and Mineral Concentrations. LIFE (BASEL, SWITZERLAND) 2023; 13:life13010135. [PMID: 36676083 PMCID: PMC9861005 DOI: 10.3390/life13010135] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/10/2022] [Accepted: 12/15/2022] [Indexed: 01/05/2023]
Abstract
Cadmium is a widely distributed heavy metal in agricultural soils that affects plant growth and productivity. In this context, the current study investigated the effects of different cadmium (Cd) doses (0, 25, 50, 75, and 100 mg L-1 of CdSO4) on the growth and physiological attributes of safflower (Carthamus tinctorius L.) including plant height (cm), root length (cm), fresh weight (g) of root, stem, and leaves, leaf number, macro and micro-nutrients, Se, and heavy metal (Cd, Cr, and Pb) content. The experiment was carried out in a completely randomized design (CRD) with four replicates. The results showed that Cd stress significantly negatively affected all growth indices, macro- and micro-nutrients, and heavy metal content. In addition, it increased the MDA and APX activities. The highest amounts of Fe, Mn, Ni, Pb, Zn, K, Na, Cd, Cr, and Cu were determined in plant roots, while the highest values of Ca and Mg were detected in plant stem tissues. High Cd doses decreased the content of Ca, K, Mg, Cr, Cu, Fe, Mn, Ni, Pb, Se, and Zn in safflower plant tissues by 45.47%, 39.33%, 79.28%, 68.21%, 37.06%, 66.67%, 45.62%, 50.38%, 54.37%, 33.33% and 65.87%, respectively, as compared to the control treatments.
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Affiliation(s)
- Murat Tunçtürk
- Department of Field Crops, Faculty of Agriculture, Van Yüzüncü Yıl University, 65090 Van, Türkiye
| | - Younes Rezaee Danesh
- Department of Plant Protection, Faculty of Agriculture, Urmia University, Urmia 5756151818, Iran
- Correspondence: or
| | - Rüveyde Tunçtürk
- Department of Field Crops, Faculty of Agriculture, Van Yüzüncü Yıl University, 65090 Van, Türkiye
| | - Erol Oral
- Department of Field Crops, Faculty of Agriculture, Van Yüzüncü Yıl University, 65090 Van, Türkiye
| | - Solmaz Najafi
- Department of Field Crops, Faculty of Agriculture, Van Yüzüncü Yıl University, 65090 Van, Türkiye
| | - Lütfi Nohutçu
- Department of Field Crops, Faculty of Agriculture, Van Yüzüncü Yıl University, 65090 Van, Türkiye
| | - Arshad Jalal
- Department of Plant Protection, Rural Engineering and Soils (DEFERS), São Paulo State University (UNESP), Ilha Solteira 01049-010, SP, Brazil
| | - Carlos Eduardo da Silva Oliveira
- Department of Plant Protection, Rural Engineering and Soils (DEFERS), São Paulo State University (UNESP), Ilha Solteira 01049-010, SP, Brazil
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Wei R, Guo Q, Zhang Q, Ma J. Characteristics of cadmium translocation and isotope fractionation in Ricinus communis seedlings: Effects from split/cut-root and limited nutrients. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 819:152493. [PMID: 35038515 DOI: 10.1016/j.scitotenv.2021.152493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 12/08/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Studying cadmium (Cd) transport in plants will improve the current understanding of Cd tolerance mechanisms. Due to the influence of analytical techniques, the application of Cd isotopes in plants is still in its early stages. Therefore, the relationships between Cd isotope fractionation and Cd translocation in plants remain unclear. In this study, we cultured Ricinus communis in hydroponic solutions during split/cut-root experiments and limited and infinite nutrient experiments. To understand the Cd transport process, the Cd2+ and other ion concentrations in different tissues (i.e., roots, stems, and leaves) and nutrient solutions, Cd isotope composition and the soluble protein in tissues were measured. The results showed that although significant effects were evident in the top leaves, the principal roots had less pronounced effects on Cd2+ translocation in the stems. Moreover, Cd underwent homolateral transport before it was translocated from the principal roots to the leaves on the side without Cd. It was apparent that the stems were responsible for translocating Cd2+ in plants. In addition, the continuous supply of high Cd2+ concentrations inhibited the growth of the top leaves, while in low Cd2+ concentrations, it was gradually transferred to the top leaves. Moreover, the tissues of R. communis were enriched with lighter Cd isotopes compared with the solutions. The clear differences between the Cd isotope fractionation of leaves under infinite and limited nutrient experiments may be attributed to plant growth and Cd uptake rates. This study provides important information for understanding Cd2+ translocation in R. communis and furthers our understanding of its tolerance and hyperaccumulation.
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Affiliation(s)
- Rongfei Wei
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Qingjun Guo
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Qian Zhang
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Jie Ma
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
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4
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Bilal S, Shahzad R, Lee IJ. Synergistic interaction of fungal endophytes, Paecilomyces formosus LHL10 and Penicillium funiculosum LHL06, in alleviating multi-metal toxicity stress in Glycine max L. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:67429-67444. [PMID: 34254237 DOI: 10.1007/s11356-021-15202-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
Heavy metal accumulation in crop grains due to hazardous metal contamination is considered a great concern. However, phytobeneficial fungi are reported to have important abilities for the biosafety of crops grown in contaminated soil. Therefore, the current study was undertaken to explore the mutualistic association of plant growth-promoting endophytic fungi in reducing heavy metal concentration in the seeds of soybean plants subsequently grown in contaminated soil, without comprising seed quality and biochemical profile. The results revealed that endophytic Paecilomyces formosus LHL10 and Penicillium funiculosum LHL06 synergistically produced higher amounts of GAs and IAA in a co-cultured medium. Moreover, the co-inoculation of LHL06 and LHL10 to soybean plants grown under multi-metal toxic conditions significantly mitigated the adverse effects of heavy metal toxicity and increased the seed production (number of pods per plants, number of seeds per pod, and 100 seed weight) of soybean plants grown under control and multi-metal toxic conditions. Moreover, the levels of carbohydrates (glucose, sucrose, and fructose), minerals (iron, calcium, magnesium, and potassium), amino acids (serine, glutamic acids, glycine, methionine, lysine, arginine, and proline), and antioxidants (superoxide dismutase, catalase, and peroxidase) were significantly enhanced in sole and co-inoculated plants under control and stress conditions. Whereas organic acids (citric acid, tartaric acid, malic acid, and succinic acid), lipid peroxidation (MDA) products, multi-metal accumulation (nickel, cadmium, copper, lead, chromium, and aluminum), and stress-responsive endogenous abscisic acid levels were significantly decreased in seeds of soybean plants grown under control and multi-metal toxic conditions upon LHL06 and LHL10 sole and co-inoculation. The current results suggested the positive biochemical regulation in seeds for improving the nutritional status and making it safe for human consumption.
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Affiliation(s)
- Saqib Bilal
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Raheem Shahzad
- Department of Horticulture, The University of Haripur, Haripur, Pakistan
| | - In-Jung Lee
- Department of Applied Biosciences, Crop Physiology Laboratory, School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea.
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Kazerooni EA, Al-Sadi AM, Kim ID, Imran M, Lee IJ. Ampelopsin Confers Endurance and Rehabilitation Mechanisms in Glycine max cv. Sowonkong under Multiple Abiotic Stresses. Int J Mol Sci 2021; 22:10943. [PMID: 34681604 PMCID: PMC8536110 DOI: 10.3390/ijms222010943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 10/04/2021] [Accepted: 10/06/2021] [Indexed: 12/17/2022] Open
Abstract
The present investigation aims to perceive the effect of exogenous ampelopsin treatment on salinity and heavy metal damaged soybean seedlings (Glycine max L.) in terms of physiochemical and molecular responses. Screening of numerous ampelopsin concentrations (0, 0.1, 1, 5, 10 and 25 μM) on soybean seedling growth indicated that the 1 μM concentration displayed an increase in agronomic traits. The study also determined how ampelopsin application could recover salinity and heavy metal damaged plants. Soybean seedlings were irrigated with water, 1.5% NaCl or 3 mM chosen heavy metals for 12 days. Our results showed that the application of ampelopsin raised survival of the 45-day old salinity and heavy metal stressed soybean plants. The ampelopsin treated plants sustained high chlorophyll, protein, amino acid, fatty acid, salicylic acid, sugar, antioxidant activities and proline contents, and displayed low hydrogen peroxide, lipid metabolism, and abscisic acid contents under unfavorable status. A gene expression survey revealed that ampelopsin application led to the improved expression of GmNAC109, GmFDL19, GmFAD3, GmAPX, GmWRKY12, GmWRKY142, and GmSAP16 genes, and reduced the expression of the GmERF75 gene. This study suggests irrigation with ampelopsin can alleviate plant damage and improve plant yield under stress conditions, especially those including salinity and heavy metals.
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Affiliation(s)
- Elham Ahmed Kazerooni
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (E.A.K.); (I.-D.K.); (M.I.)
| | - Abdullah Mohammed Al-Sadi
- Department of Plant Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, P.O. Box 34, Al-Khod 123, Oman;
| | - Il-Doo Kim
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (E.A.K.); (I.-D.K.); (M.I.)
| | - Muhammad Imran
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (E.A.K.); (I.-D.K.); (M.I.)
| | - In-Jung Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea; (E.A.K.); (I.-D.K.); (M.I.)
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Zhang S, Song J, Wu L, Chen Z. Worldwide cadmium accumulation in soybean grains and feasibility of food production on contaminated calcareous soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 269:116153. [PMID: 33309406 DOI: 10.1016/j.envpol.2020.116153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 11/18/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
Elevated toxins in soybeans extensively threaten Asian residents and over one billion vegetarians worldwide. An integrated dataset of toxic trace metal(loid)s especially cadmium (Cd) analysis in soybean grain samples (n = 5217) from 12 countries/regions of origin was compiled for risk analysis. Worldwide grain Cd averaged 0.093 mg kg-1, but mean values varied 16-fold between regions, with South China (0.32 mg kg-1) > Argentina (0.15 mg kg-1) = German (0.13 mg kg-1) > Japan (0.11 mg kg-1) > the United States (0.064 mg kg-1) > Central-North China (0.020-0.60 mg kg-1) ≥ Iran (0.042 mg kg-1) = Brazil (0.023 mg kg-1) = South Korea (0.020 mg kg-1). Regression analysis suggested widespread contamination and acidic soil features significantly contributed the elevated food Cd contamination worldwide. Arsenic (As) and lead (Pb) are also of concern because excessive levels were often observed in grains. Given that soil Cd bioavailability is generally low in alkaline pH ranges, the feasibility of producing safe food from contaminated land was investigated by greenhouse experiments with one low-Cd soybean cultivar grown on 20 contaminated calcareous soils. Equilibrium-based approaches i.e., 0.01 M CaCl2 and in-situ porewater extractions, and diffusion-based diffusive gradients in thin-films technique were used to determine the plant-available fractions of soil metal(loid)s to explain the bioaccumulation variation. The results suggested that soybean grains bioaccumulated mean 0.76 mg Cd kg-1, ranging from 0.16 to 2.1 mg kg-1, whereas As and Pb bioaccumulation was low. Cadmium accumulation was closely correlated with plant-available Cd fractions especially the 0.01 M CaCl2-extractable Cd, but negatively correlated with soil pH. Even in the alkaline pH range, a slight decrease of soil pH would increase grain Cd significantly. Study region and those arable lands that have similar soil conditions are not recommended for growing soybean unless novel remediation strategies are developed.
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Affiliation(s)
- Sha Zhang
- Department of Health and Environmental Sciences, Xi'an Jiaotong-Liverpool University, 111 Ren'ai Road, Suzhou, Jiangsu, 215123, China; Department of Environmental Science, University of Liverpool, Brownlow Hill, Liverpool, L69 7ZX, United Kingdom
| | - Jing Song
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Longhua Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Zheng Chen
- Department of Health and Environmental Sciences, Xi'an Jiaotong-Liverpool University, 111 Ren'ai Road, Suzhou, Jiangsu, 215123, China.
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Wang X, Zhang B, Wu D, Hu L, Huang T, Gao G, Huang S, Wu S. Chemical forms governing Cd tolerance and detoxification in duckweed (Landoltia punctata). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 207:111553. [PMID: 33254410 DOI: 10.1016/j.ecoenv.2020.111553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 06/12/2023]
Abstract
Duckweed (Landoltia punctata) is an ideal species to restore cadmium (Cd)-polluted waters due to its fast growth and easy harvesting. To understand its tolerance and detoxification mechanism, the Cd stress responses, subcellular Cd distribution and chemically bound Cd forms (especially protein-bound Cd) were surveyed in this study. L. punctata, a potential Cd bioremediation plant, was cultured hydroponically with Cd concentrations of 0.0, 0.5, 2.0, and 5.0 mg L-1 for 5 days. The results showed that the Cd content in L. punctata increased significantly as the Cd content increased. The majority of Cd was localized in the soluble fraction (23-55%) and the cell wall fraction (21-54%), and only 14-23% of Cd was located in cell organelles. Analysis of the Cd chemical forms demonstrated that the largest portion of Cd was found in 1 M NaCl extracts, followed by d-H2O and 2% HAc extracts, indicating that Cd was mainly bound to different proteins. Albumin- and globulin-bound Cd forms were predominant, together accounting for over 80% of the total protein-bound Cd in L. punctata. These results indicate that cell wall immobilization and vacuolar dissociation of Cd are possible primary strategies for Cd biosorption and detoxification in L. punctata, which occur mainly through chemical forms changes, especially the binding of Cd to proteins.
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Affiliation(s)
- Xianglian Wang
- School of Resource Environment and Chemical Engineering, Key Laboratory of Poyang Lake Environment and Resources Utilization Ministry of Education, Nanchang University, Nanchang 330031, China; School of Civil and Architectural Engineering, Nanchang Institute of Technology, Nanchang 330099, China
| | - Baojun Zhang
- Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang 330006, China; School of Public Health, Nanchang University, Nanchang 330006, China.
| | - Daishe Wu
- School of Resource Environment and Chemical Engineering, Key Laboratory of Poyang Lake Environment and Resources Utilization Ministry of Education, Nanchang University, Nanchang 330031, China.
| | - Liang Hu
- Jiangxi Provincial Key Laboratory for Restoration of Degraded Ecosystems & Watershed Ecohydrology, Nanchang Institute of Technology, Nanchang 330099, China
| | - Ting Huang
- School of Resource Environment and Chemical Engineering, Key Laboratory of Poyang Lake Environment and Resources Utilization Ministry of Education, Nanchang University, Nanchang 330031, China
| | - Guiqing Gao
- School of Civil and Architectural Engineering, Nanchang Institute of Technology, Nanchang 330099, China
| | - Shan Huang
- School of Resource Environment and Chemical Engineering, Key Laboratory of Poyang Lake Environment and Resources Utilization Ministry of Education, Nanchang University, Nanchang 330031, China
| | - Shan Wu
- School of Resource Environment and Chemical Engineering, Key Laboratory of Poyang Lake Environment and Resources Utilization Ministry of Education, Nanchang University, Nanchang 330031, China
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Shah AA, Khan WU, Yasin NA, Akram W, Ahmad A, Abbas M, Ali A, Safdar MN. Butanolide alleviated cadmium stress by improving plant growth, photosynthetic parameters and antioxidant defense system of brassica oleracea. CHEMOSPHERE 2020; 261:127728. [PMID: 32731022 DOI: 10.1016/j.chemosphere.2020.127728] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/12/2020] [Accepted: 07/15/2020] [Indexed: 05/04/2023]
Abstract
Current study was performed to explore the effect of butanolide (KAR1) in mitigation of cadmium (Cd) induced toxicity in Brussels sprout (Brassica oleracea L.). Brussels sprout seeds, treated with 10-5 M, 10-7 M and 10-10 M solution of KAR1 were allowed to grow in Cd-contaminated (5 mg L-1) regimes for 25 d. Cadmium toxicity decreased seed germination and growth in B. oleracea seedlings. Elevated intensity of electrolyte leakage (EL), malondialdehyde (MDA) and hydrogen peroxide (H2O2) were observed in Cd-stressed seedlings. Additionally, reduced level of stomatal conductivity, transpiration rate, photosynthesis rate, intercellular carbon dioxide concentration, and leaf relative water content (LRWC) was also observed in Cd-stressed seedlings. Nevertheless, KAR1 improved seed germination, seedling growth and biomass production in Cd stressed plants. KAR1 application showed elevated LRWC, osmotic potential, and higher membranous stability index (MSI) in seedlings under Cd regime. Furthermore, seedlings developed by KAR1 treatment exhibited higher stomatal conductivity, and intercellular carbon dioxide concentration together with improved rate of transpiration and photosynthetic rate in B. oleracea under Cd stress. These findings elucidate that the reduced level of MDA, EL and H2O2, as well as improvement in antioxidative machinery increased growth and alleviated Cd toxicity in KAR1 treated seedlings under Cd stress.
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Affiliation(s)
- Anis Ali Shah
- Department of Botany, University of Narowal, Pakistan
| | - Waheed Ullah Khan
- College of Earth and Environmental Sciences, University of the Punjab, Lahore, Pakistan
| | | | - Waheed Akram
- Guangdong Key Laboratory of New Technology Research of Vegetables, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Aqeel Ahmad
- Guangdong Key Laboratory of New Technology Research of Vegetables, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Muhammad Abbas
- Department of Microbiology and Molecular Genetics, University of the Punjab, Lahore, Pakistan
| | - Aamir Ali
- Department of Botany, University of Sargodha, Sargodha, Pakistan
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Zhi Y, Sun T, Zhou Q, Leng X. Screening of safe soybean cultivars for cadmium contaminated fields. Sci Rep 2020; 10:12965. [PMID: 32737374 PMCID: PMC7395758 DOI: 10.1038/s41598-020-69803-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 04/03/2020] [Indexed: 11/09/2022] Open
Abstract
The selection and breeding of Cd-safe cultivars (CSCs) has been used to minimize the influx of Cd into the human food chain. The pot-culture experiment combined with the field-culture experiment were conducted to screen out CSCs, i.e. the cultivars accumulating Cd at low enough level for safe consumption in their edible parts when grown in contaminated soils, were screened out and explored among the crop cultivars. We used 25 Chinese soybean cultivars in different Cd contaminated soils to assess the performance of this new method. Variations in uptake, enrichment, and translocation of Cd among these cultivars were studied to screen out soybean CSCs. The accumulation of Cd in the five soybean genotypes was lower than 0.20 mg kg-1 under 1.0 mg Cd kg-1 treatment, and the EF and TF were lower than 1.0. The field studies further identified that cultivar Shennong 10, Tiedou 36 and Liaodou 21 fit the criteria for CSCs, which were suitable to be planted in low-Cd (Cd concentration < 1.22 mg kg-1) contaminated soils. The results can provide scientific methods for screening low-Cd accumulation in soybeans and can provide a path for controlling, treating and remedying Cd-contaminated agricultural soils to make grains safe for human consumption.
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Affiliation(s)
- Yang Zhi
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, 110016, China.
- College of Sciences, Northeastern University, Shenyang, 110004, China.
| | - Ting Sun
- College of Sciences, Northeastern University, Shenyang, 110004, China
| | - Qixing Zhou
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Xue Leng
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, 110016, China
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Molina AS, Lugo MA, Pérez Chaca MV, Vargas-Gil S, Zirulnik F, Leporati J, Ferrol N, Azcón-Aguilar C. Effect of Arbuscular Mycorrhizal Colonization on Cadmium-Mediated Oxidative Stress in Glycine max (L.) Merr. PLANTS (BASEL, SWITZERLAND) 2020; 9:E108. [PMID: 31952215 PMCID: PMC7020179 DOI: 10.3390/plants9010108] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/11/2020] [Accepted: 01/13/2020] [Indexed: 12/29/2022]
Abstract
Cadmium is a heavy metal (HM) that inhibits plant growth and leads to death, causing great losses in yields, especially in Cd hyperaccumulator crops such as Glycine max (L.) Merr. (soybean), a worldwide economically important legume. Furthermore, Cd incorporation into the food chain is a health hazard. Oxidative stress (OS) is a plant response to abiotic and biotic stresses with an intracellular burst of reactive oxygen species (ROS) that causes damage to lipids, proteins, and DNA. The arbuscular mycorrhizal fungal (AMF) association is a plant strategy to cope with HM and to alleviate OS. Our aim was to evaluate the mitigation effects of mycorrhization with AMF Rhizophagus intraradices on soybean growth, nutrients, Cd accumulation, lipid peroxidation, and the activity of different antioxidant agents under Cd (0.7-1.2 mg kg-1 bioavailable Cd) induced OS. Our results suggest that glutathione may act as a signal molecule in a defense response to Cd-induced OS, and mycorrhization may avoid Cd-induced growth inhibition and reduce Cd accumulation in roots. It is discussed that R. intraradices mycorrhization would act as a signal, promoting the generation of a soybean cross tolerance response to Cd pollution, therefore evidencing the potential of this AMF association for bioremediation and encouragement of crop development, particularly because it is an interaction between a worldwide cultivated Cd hyperaccumulator plant and an AMF-HM-accumulator commonly present in soils.
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Affiliation(s)
- Alicia S. Molina
- Facultad de Química, Bioquímica y Farmacia (FQByF), Universidad Nacional de San Luis (UNSL), Área Química Biológica, Ejército de los Andes 950, Bloque I, 1er Piso, San Luis, Argentina; (M.V.P.C.); (F.Z.)
| | - Mónica A. Lugo
- IMIBIO-CONICET-FQByF-UNSL, Área Ecología, Ejército de los Andes 950, Bloque I, 2do Piso, Box 4 San Luis, Argentina
| | - María V. Pérez Chaca
- Facultad de Química, Bioquímica y Farmacia (FQByF), Universidad Nacional de San Luis (UNSL), Área Química Biológica, Ejército de los Andes 950, Bloque I, 1er Piso, San Luis, Argentina; (M.V.P.C.); (F.Z.)
| | - Silvina Vargas-Gil
- Instituto de Patología Vegetal (IPAVE, CIAP-INTA), CONICET, Camino 60 Cuadras Km. 5,5, C.P. 5119 Córdoba, Argentina;
| | - Fanny Zirulnik
- Facultad de Química, Bioquímica y Farmacia (FQByF), Universidad Nacional de San Luis (UNSL), Área Química Biológica, Ejército de los Andes 950, Bloque I, 1er Piso, San Luis, Argentina; (M.V.P.C.); (F.Z.)
| | - Jorge Leporati
- Facultas de Ingeniería y Ciencias Agropecuarias (FICA)-UNSL, Área Matemática, Campus Universitario, Ruta 148 Ext. Norte, 2do Piso Ala Este, Villa Mercedes, San Luis, Argentina;
| | - Nuria Ferrol
- Estación Experimental del Zaidín, CSIC, Profesor Albareda 1, 18008 Granada, Spain; (N.F.); (C.A.-A.)
| | - Concepción Azcón-Aguilar
- Estación Experimental del Zaidín, CSIC, Profesor Albareda 1, 18008 Granada, Spain; (N.F.); (C.A.-A.)
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11
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Ji P, Huang X, Jiang Y, Zhao H. Potential of enhancing the phytoremediation efficiency of Solanum nigrum L. by earthworms. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 22:529-533. [PMID: 31703534 DOI: 10.1080/15226514.2019.1686604] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Contamination of the soil by Cadmium (Cd) is emerged as a critical environmental problem in China due to current urbanization and industrial activities that hinder the sustainable future development of agriculture. In this study, a system combined by earthworm and Solanum nigrum L. (S. nigurm) was designed for remediation of Cadmium from contaminated soils. The present study revealed that application of earthworm enhanced the biomass of S. nigrum by 61.71%, maxim; the Cd concentrations in the aboveground part of S. nigrum enhanced 35.8% when 50 g earthworm was added into each pot; the addition of earthworm also have some effect on the bio-concentration factor (BF) of S. nigrum while no effect was detected on the bio-transfer factor (TF). In addition, considering the accumulation of Cd by earthworm, the total amount of Cd extracted by the combined system enhanced 57.7% at least and 264.6% at the most, compared to the Cd extraction amount of S. nigrum alone. Generally, according to this study, the earthworm-S. nigrum system has the potential to be used for the remediation of Cd contaminated soils.
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Affiliation(s)
- Puhui Ji
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
- Minist Agr, Tianjin Key Lab Agroenvironm & Agroprod Safety, Key Lab Original Environm Qual, Tianjin, China
| | - Xunrong Huang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Yongji Jiang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Hanghang Zhao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
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12
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Coman V, Oprea I, Leopold LF, Vodnar DC, Coman C. Soybean Interaction with Engineered Nanomaterials: A Literature Review of Recent Data. NANOMATERIALS 2019; 9:nano9091248. [PMID: 31484310 PMCID: PMC6780927 DOI: 10.3390/nano9091248] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/26/2019] [Accepted: 09/02/2019] [Indexed: 01/07/2023]
Abstract
With a continuous increase in the production and use in everyday life applications of engineered nanomaterials, concerns have appeared in the past decades related to their possible environmental toxicity and impact on edible plants (and therefore, upon human health). Soybean is one of the most commercially-important crop plants, and a perfect model for nanomaterials accumulation studies, due to its high biomass production and ease of cultivation. In this review, we aim to summarize the most recent research data concerning the impact of engineered nanomaterials on the soya bean, covering both inorganic (metal and metal-oxide nanoparticles) and organic (carbon-based) nanomaterials. The interactions between soybean plants and engineered nanomaterials are discussed in terms of positive and negative impacts on growth and production, metabolism and influences on the root-associated microbiota. Current data clearly suggests that under specific conditions, nanomaterials can negatively influence the development and metabolism of soybean plants. Moreover, in some cases, a possible risk of trophic transfer and transgenerational impact of engineered nanomaterials are suggested. Therefore, comprehensive risk-assessment studies should be carried out prior to any mass productions of potentially hazardous materials.
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Affiliation(s)
- Vasile Coman
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania.
| | - Ioana Oprea
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania.
| | - Loredana Florina Leopold
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania.
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania.
| | - Dan Cristian Vodnar
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania.
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania.
| | - Cristina Coman
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania.
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania.
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13
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Chuaphasuk C, Prapagdee B. Effects of biochar-immobilized bacteria on phytoremediation of cadmium-polluted soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:23679-23688. [PMID: 31203543 DOI: 10.1007/s11356-019-05661-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 06/03/2019] [Indexed: 05/22/2023]
Abstract
This work is the first report of the ability of biochar-immobilized cadmium-resistant bacteria (CRB) on promoting the efficiency of cadmium phytoextraction by Chlorophytum laxum R.Br. The survival of CRB immobilized on biochar in cadmium-contaminated soil at a concentration of 75.45 mg kg-1 was studied. The results found that both CRB, namely Arthrobacter sp. TM6 and Micrococcus sp. MU1, can survive and grow in cadmium-contaminated soil. To study phytoextraction in the pot experiments, 2-month-old C. laxum was individually planted in cadmium-contaminated soil and divided into four treatments, including (i) untreated control, (ii) biochar, (iii) biochar-immobilized (BC) Arthrobacter sp., and (iv) BC-Micrococcus sp. The results found that biochar-immobilized CRB did not cause any effect to the root lengths and shoot heights of plants compared to the untreated control. Interestingly, inoculation of biochar-immobilized CRB significantly increased cadmium accumulation in the shoots and roots compared to the untreated control. In addition, the highest cadmium content in a whole plant, best phytoextraction performance, and greatest bioaccumulation factor was found in plant inoculated with BC-Micrococcus sp., followed by BC-Arthrobacter sp. In conclusion, inoculation of biochar-immobilized CRB enhanced cadmium accumulation and translocation of cadmium from the roots to shoots, suggesting further applying biochar-immobilized CRB in cadmium-polluted soil for promoting cadmium phytoextraction efficiency of ornamental plants. Graphical abstract.
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Affiliation(s)
- Chonticha Chuaphasuk
- Laboratory of Environmental Biotechnology, Faculty of Environment and Resource Studies, Mahidol University, Phutthamonthon, Nakhon Pathom, 73170, Thailand
| | - Benjaphorn Prapagdee
- Laboratory of Environmental Biotechnology, Faculty of Environment and Resource Studies, Mahidol University, Phutthamonthon, Nakhon Pathom, 73170, Thailand.
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14
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Franzaring J, Fangmeier A, Schlosser S, Hahn V. Cadmium concentrations in German soybeans are elevated in conurbations and in regions dominated by mining and the metal industry. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:3711-3715. [PMID: 30578533 DOI: 10.1002/jsfa.9548] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Cadmium (Cd) is a mobile heavy metal and soybeans accumulate more of this element compared to other grain crops. Because vegan and vegetarian lifestyles are increasingly popular, plant-based diets should be free from contaminants. Cd minimization has recently been identified as a breeding aim in addition to protein and oil levels. It is also important to consider the regional variability of Cd in crops. RESULTS A large sample collection (n = 602) was subjected to Cd analyses. Soybeans were grown using a standard protocol by private gardeners in a citizen science program. Some 12.5% of samples exceeded European Union limits, although Cd concentrations and exceedances showed regional variation around the national mean (0.13 mg kg-1 ). Contamination was higher in densely populated regions, possibly as a result of the long-term emissions of heavy metal loaded dusts from industry, traffic and energy production. Cd concentrations were also elevated in regions once characterized by mining and heavy industry. Values were low overall in rural areas and agricultural regions despite potential inputs via phosphate fertilizers. CONCLUSION Grain Cd levels are highly variable across Germany. Soybean farming may be problematic in regions with a long history of mining and heavy metal deposition. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Jürgen Franzaring
- University of Hohenheim, Institute of Landscape and Plant Ecology (320), Plant Ecology and Ecotoxicology, Stuttgart, Germany
| | - Andreas Fangmeier
- University of Hohenheim, Institute of Landscape and Plant Ecology (320), Plant Ecology and Ecotoxicology, Stuttgart, Germany
| | | | - Volker Hahn
- University of Hohenheim, State Plant Breeding Institute (720), Research group Legumes and Sunflowers, Stuttgart, Germany
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15
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Schweizer SA, Seitz B, van der Heijden MGA, Schulin R, Tandy S. Impact of organic and conventional farming systems on wheat grain uptake and soil bioavailability of zinc and cadmium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 639:608-616. [PMID: 29800854 DOI: 10.1016/j.scitotenv.2018.05.187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Steffen A Schweizer
- Soil Protection, Institute of Terrestrial Ecosystems, ETH Zürich, Universitätstrasse 16, 8092 Zurich, Switzerland; Soil Science, Department of Ecology and Ecosystem Management, Technical University of Munich, Emil-Ramann-Straße 2, 85354 Freising, Germany.
| | - Benjamin Seitz
- Plant-Soil Interactions, Agroscope, Reckenholzstrasse 191, 8046 Zurich, Switzerland; Environmental Geosciences, University of Basel, Bernoullistrasse 30, 4056 Basel, Switzerland.
| | - Marcel G A van der Heijden
- Plant-Soil Interactions, Agroscope, Reckenholzstrasse 191, 8046 Zurich, Switzerland; Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland; Plant-Microbe Interactions, Institute of Environmental Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
| | - Rainer Schulin
- Soil Protection, Institute of Terrestrial Ecosystems, ETH Zürich, Universitätstrasse 16, 8092 Zurich, Switzerland.
| | - Susan Tandy
- Soil Protection, Institute of Terrestrial Ecosystems, ETH Zürich, Universitätstrasse 16, 8092 Zurich, Switzerland.
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16
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Farooq M, Hussain M, Usman M, Farooq S, Alghamdi SS, Siddique KHM. Impact of Abiotic Stresses on Grain Composition and Quality in Food Legumes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:8887-8897. [PMID: 30075073 DOI: 10.1021/acs.jafc.8b02924] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Grain quality and composition in food legumes are influenced by abiotic stresses. This review discusses the influence of abiotic stresses on grain composition and quality in food grains. Grain protein declines under salt stress due to the restricted absorption of nitrate from the soil solution. Grain phosphorus, nitrogen, and potassium contents declined whereas sodium and chloride increased. However, under drought, grain protein increased whereas the oil contents were decreased. For example, among fatty acids, oleic acid content increased; however, linoleic and/or linolenic acids were decreased under drought. Heat stress increased grain oil content whereas grain protein was decreased. Low temperature during late pod-filling reduced starch, protein, soluble sugar, fat, and fiber contents. However, an elevated CO2 level improved omega-3 fatty acid content at the expense of omega-6 fatty acids. Crop management and improvement strategies, next generation sequencing, and gene manipulation can help improve quality of food legumes under abiotic stresses.
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Affiliation(s)
- Muhammad Farooq
- Department of Crop Sciences, College of Agricultural and Marine Sciences , Sultan Qaboos University , Al-Khoud 123 , Oman
- Department of Agronomy , University of Agriculture , Faisalabad , Pakistan 38040
- The UWA Institute of Agriculture , The University of Western Australia , LB 5005 , Perth Western Australia 6001 , Australia
- College of Food and Agricultural Sciences , King Saud University , Riyadh 11451 , Saudi Arabia
| | - Mubshar Hussain
- Department of Agronomy , Bahauddin Zakariya University , Multan , Pakistan 60000
- School of Veterinary and Life Sciences , Murdoch University , 90 South Street , Murdoch , Western Australia 6150 , Australia
| | - Muhammad Usman
- Department of Agronomy , University of Agriculture , Faisalabad , Pakistan 38040
| | - Shahid Farooq
- Department of Plant Protection , Harran University , Sanliurfa , Turkey
| | - Salem S Alghamdi
- College of Food and Agricultural Sciences , King Saud University , Riyadh 11451 , Saudi Arabia
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture , The University of Western Australia , LB 5005 , Perth Western Australia 6001 , Australia
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17
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Pereira AS, Dorneles AOS, Bernardy K, Sasso VM, Bernardy D, Possebom G, Rossato LV, Dressler VL, Tabaldi LA. Selenium and silicon reduce cadmium uptake and mitigate cadmium toxicity in Pfaffia glomerata (Spreng.) Pedersen plants by activation antioxidant enzyme system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:18548-18558. [PMID: 29700750 DOI: 10.1007/s11356-018-2005-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 04/11/2018] [Indexed: 05/15/2023]
Abstract
Cadmium (Cd) is toxic to plants and animals, making it necessary to develop strategies that seek to reduce its introduction into food chains. Thus, the aim of this study was to investigate whether silicon (Si) and selenium (Se) reduce Cd concentrations in Pfaffia glomerata medicinal plant and attenuate the oxidative stress promoted by this metal. These plants were cultivated in hydroponics under the following treatments: control (nutrient solution), 2.5 μM Se, 2.5 mM Si, 50 μM Cd, 50 μM Cd + 2.5 μM Se, 50 μM Cd + 2.5 mM Si. After 14 days of exposure to treatments, leaves and roots were collected for the determination of dry weight of shoot and roots, Cd concentrations, chlorophyll and carotenoids content, and biochemical parameters (lipid peroxidation and guaiacol peroxidase and superoxide dismutase activities). The data were submitted to analysis of variance and means were compared with Scott-Knott test at 5% error probability. Roots of P. glomerata plants showed a significant reduction on dry weight accumulation when exposed to Cd. However, both Se and Si promoted a significant reduction of deleterious effects of Cd. The Cd concentrations in the tissues were reduced in the presence of Se or Si. Plants treated with Cd together with Se or Si presented higher pigment content than those with only Cd, thus showing a reduction in the negative effects caused by this element. In the treatments in which Se and Si were added in the growth medium together with Cd, an activation of superoxide dismutase and guaiacol peroxidase enzymes was observed in the roots and shoot, which may have contributed to lower lipid peroxidation. Thus, Se and Si reduce Cd concentrations and have potential to ameliorate Cd toxicity in P. glomerata plants, which can be used to increase productivity and quality of medicinal plants.
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Affiliation(s)
- Aline Soares Pereira
- Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
- Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil.
| | | | - Katieli Bernardy
- Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | - Daniele Bernardy
- Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Gessieli Possebom
- Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
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18
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Li Y, Liu K, Wang Y, Zhou Z, Chen C, Ye P, Yu F. Improvement of cadmium phytoremediation by Centella asiatica L. after soil inoculation with cadmium-resistant Enterobacter sp. FM-1. CHEMOSPHERE 2018; 202:280-288. [PMID: 29573613 DOI: 10.1016/j.chemosphere.2018.03.097] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/12/2018] [Accepted: 03/14/2018] [Indexed: 05/27/2023]
Abstract
This study examined the potential of a cadmium-resistant Enterobacter sp. FM-1 to promote plant growth and assist in cadmium accumulation in both mine-type C. asiatica L. and non-mine type C. asiatica L. tissues in highly cadmium-polluted soils. The results indicated that Enterobacter sp. FM-1 significantly promoted growth and alleviated metal toxicity in both types of C. asiatica L. Meanwhile, inoculation with Enterobacter sp. FM-1 in contaminated soil can increased cadmium bioavailability in soil. Furthermore, it will increase plant uptake and the accumulation of cadmium in C. asiatica L. leaves, stems and roots compared to that in an uninoculated plant. However, mine-type C. asiatica L. had better cadmium tolerance than the non mine-type C. asiatica L. Because of its native metal-tolerant ability, which could easily grow and proliferate, and had a better performance under cadmium-contamination conditions. Additionally, inoculation with Enterobacter sp. FM-1 significantly enhanced the bioaccumulation factor (BAF) and the translocation factor (TF) values in both types of C. asiatica L. even under high cadmium concentration soil condition. Hence, based on higher BAF and TF values and strong cadmium accumulation in the leaves and stems, we concluded that inoculation with Enterobacter sp. FM-1 is potentially useful for the phytoremediation of cadmium-contaminated sites by Centella asiatica L.
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Affiliation(s)
- Yi Li
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of Education, Guangxi Normal University, 541004, Guilin, China; College of Environment and Resource, Guangxi Normal University, 541004, Guilin, China
| | - Kehui Liu
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; College of Life Science, Guangxi Normal University, 541004, Guilin, China
| | - Yang Wang
- College of Environment and Resource, Guangxi Normal University, 541004, Guilin, China
| | - Zhenming Zhou
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of Education, Guangxi Normal University, 541004, Guilin, China; College of Environment and Resource, Guangxi Normal University, 541004, Guilin, China
| | - Chaoshu Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of Education, Guangxi Normal University, 541004, Guilin, China; College of Environment and Resource, Guangxi Normal University, 541004, Guilin, China
| | - Panhua Ye
- College of Environment and Resource, Guangxi Normal University, 541004, Guilin, China
| | - Fangming Yu
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China; Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of Education, Guangxi Normal University, 541004, Guilin, China; College of Environment and Resource, Guangxi Normal University, 541004, Guilin, China.
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19
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Rojjanateeranaj P, Sangthong C, Prapagdee B. Enhanced cadmium phytoremediation of Glycine max L. through bioaugmentation of cadmium-resistant bacteria assisted by biostimulation. CHEMOSPHERE 2017; 185:764-771. [PMID: 28734213 DOI: 10.1016/j.chemosphere.2017.07.074] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 06/12/2017] [Accepted: 07/15/2017] [Indexed: 06/07/2023]
Abstract
This study examined the potential of three strains of cadmium-resistant bacteria, including Micrococcus sp., Pseudomonas sp. and Arthrobacter sp., to promote root elongation of Glycine max L. seedlings, soil cadmium solubility and cadmium phytoremediation in G. max L. planted in soil highly polluted with cadmium with and without nutrient biostimulation. Micrococcus sp. promoted root length in G. max L. seedlings under toxic cadmium conditions. Soil inoculation with Arthrobacter sp. increased the bioavailable fraction of soil cadmium, particularly in soil amended with a C:N ratio of 20:1. Pot culture experiments observed that the highest plant growth was in Micrococcus sp.-inoculated plants with nutrient biostimulation. Cadmium accumulation in the roots, stems and leaves of G. max L. was significantly enhanced by Arthrobacter sp. with nutrient biostimulation. A combined use of G. max L. and Arthrobacter sp. with nutrient biostimulation accelerated cadmium phytoremediation. In addition, cadmium was retained in roots more than in stems and leaves and G. max L. had the lowest translocation factor at all growth stages, suggesting that G. max L. is a phytostabilizing plant. We concluded that biostimulation-assisted bioaugmentation is an important strategy for improving cadmium phytoremediation efficiency.
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Affiliation(s)
- Pongsarun Rojjanateeranaj
- Laboratory of Environmental Biotechnology, Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhonpathom 73170, Thailand
| | - Chirawee Sangthong
- Laboratory of Environmental Biotechnology, Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhonpathom 73170, Thailand
| | - Benjaphorn Prapagdee
- Laboratory of Environmental Biotechnology, Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhonpathom 73170, Thailand.
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20
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Poblaciones MJ, Damon P, Rengel Z. Foliar zinc biofortification effects in Lolium rigidum and Trifolium subterraneum grown in cadmium-contaminated soil. PLoS One 2017; 12:e0185395. [PMID: 28950025 PMCID: PMC5614633 DOI: 10.1371/journal.pone.0185395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/12/2017] [Indexed: 11/24/2022] Open
Abstract
Zinc (Zn) is an important micronutrient that can alleviate cadmium (Cd) toxicity to plants and limit Cd entry into the food chain. However, little is known about the Zn-Cd interactions in pasture plants. We characterized the effects of foliar Zn application and Cd uptake by ryegrass (Lolium rigidum L.) and clover (Trifolium subterraneum L.) grown on Cd-contaminated soils; all combinations of foliar Zn applications (0, 0.25 and 0.5% (w/v) ZnSO4·7H2O) and soil Cd concentrations (0, 2.5 and 5 mg Cd kg-1) were tested. For both plant species, soil concentrations of DTPA-extractable Cd and Zn increased with an increase in the Cd and Zn treatments, respectively. Compared with L. rigidum, T. subterraneum accumulated, respectively, 3.3- and 4.1-fold more Cd in the 2.5-Cd and 5-Cd treatments and about 1.3-, 2.3- and 2.8-fold more Zn in the No-Zn, 0.25-Zn and 0.5-Zn treatments. Also, DTPA-Zn concentration was higher in soil after T. subterraneum than L. rigidum growth regardless of Zn applications. Foliar application of 0.25% (w/v) Zn significantly decreased the total Cd concentration in shoots of both species grown in the Cd-contaminated soil and ameliorated the adverse effects of Cd exposure on root growth, particularly in T. subterraneum.
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Affiliation(s)
- Maria J. Poblaciones
- Department of Agronomy and Forest Environment Engineering, University of Extremadura, Badajoz, Spain
- School of Agriculture and Environment, The University of Western Australia, Perth, Australia
| | - Paul Damon
- School of Agriculture and Environment, The University of Western Australia, Perth, Australia
| | - Zed Rengel
- School of Agriculture and Environment, The University of Western Australia, Perth, Australia
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21
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Asemoloye MD, Jonathan SG, Jayeola AA, Ahmad R. Mediational influence of spent mushroom compost on phytoremediation of black-oil hydrocarbon polluted soil and response of Megathyrsus maximus Jacq. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 200:253-262. [PMID: 28582748 DOI: 10.1016/j.jenvman.2017.05.090] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 05/12/2017] [Accepted: 05/28/2017] [Indexed: 05/04/2023]
Abstract
Ability of a plant to develop different adaptive strategies can also determine its capability for effective soil remediation. In this study, influence of spent mushroom compost (SMC) was tested on the phytoremediation of black oil hydrocarbon polluted soil and the response of Megathyrsus maximus (guinea grass). Studies were carried out in microcosm conditions by mixing different concentration of SMC viz., 10, 20, 30 and 40% in a 5 kg of contaminated soil along with control. Seeds of M. maximus was sown in tray for two weeks and allowed to grow for height of 10 cm and transplanted in to the different experimental pots. Soil nutrient, heavy metal and PAH contents were analyzed before and after the experiment. Ecophysiological and anatomical responses due to the contaminants in the soil by M. Maximus were analyzed after 120 days. Phytomass efficiency, potential photosynthesis (Amax) and contents of chlorophylls (a and b) as well as the total chlorophyll along with anatomical evaluations were recorded. Plant alone (control) reduced the soil heavy metal and PAH contents but further improvements were observed in SMC treatments, similar results were also observed as regards to the plant's phytoremediation efficiency (PE), phytomass and potential photosynthetic rates (m mol O2 M-2S-1). The plant's root and shoot anatomical responses were enhanced in treatments compared to control, study infers that the treatment enhances the biostimulation and development of adaptive characteristics for M. maximus survival in contaminated soils and promotes its co-degradation of hydrocarbon. SMC supports remediation and as well enhances the anatomical evaluations, we therefore recommend the use of SMC on response of Megathyrsus maximus Jacq for remediation of petrochemical based phytoremediation.
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Affiliation(s)
- Michael Dare Asemoloye
- Food and Environmental Mycology/Biotechnology Unit, Department of Botany, University of Ibadan, Ibadan, Nigeria; Department of Environmental Sciences, COMSATS Institute of Information Technology, 22060, Abbottabad, Pakistan.
| | - Segun Gbolagade Jonathan
- Food and Environmental Mycology/Biotechnology Unit, Department of Botany, University of Ibadan, Ibadan, Nigeria
| | - Adeniyi A Jayeola
- Plant Anatomy/Biosystematics Unit, Department of Botany, University of Ibadan, Ibadan, Nigeria
| | - Rafiq Ahmad
- Department of Environmental Sciences, COMSATS Institute of Information Technology, 22060, Abbottabad, Pakistan
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Prapagdee B, Wankumpha J. Phytoremediation of cadmium-polluted soil by Chlorophytum laxum combined with chitosan-immobilized cadmium-resistant bacteria. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:19249-19258. [PMID: 28667583 DOI: 10.1007/s11356-017-9591-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
This study examined the performance of the chitosan-immobilized cadmium-resistant bacteria Arthrobacter sp. and Micrococcus sp. on cadmium phytoremediation by Chlorophytum laxum in cadmium-polluted soil. These immobilized cadmium-resistant bacteria can survive in cadmium-contaminated soil and significantly increased soil cadmium solubility, but the ability of chitosan-immobilized cells to increase cadmium solubility was lower than that of free cells. A pot experiment demonstrated that chitosan-immobilized Micrococcus sp. promoted the growth of C. laxum planted in cadmium-contaminated soil. A significant increase in the cadmium concentration in the roots and aboveground parts of C. laxum was found in plants inoculated with free and chitosan-immobilized cells of these bacteria. The performance of Arthrobacter sp. free cells to augment cadmium accumulation in C. laxum was a little bit better than that of chitosan-immobilized Arthrobacter sp., except at 9 weeks after planting. The phytoextraction coefficient, bioaccumulation factor, and translocation factor of C. laxum inoculated with free and chitosan-immobilized cells of cadmium-resistant bacteria were higher than those of the uninoculated control and increased with time. Our findings suggest that chitosan-immobilized cells can be exploited to enhance the efficiency of cadmium phytoremediation by C. laxum.
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Affiliation(s)
- Benjaphorn Prapagdee
- Laboratory of Environmental Biotechnology, Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhonpathom, 73170, Thailand.
| | - Jiraporn Wankumpha
- Laboratory of Environmental Biotechnology, Faculty of Environment and Resource Studies, Mahidol University, Salaya, Nakhonpathom, 73170, Thailand
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McBride MB, Frenchmeyer M, Kelch SE, Aristilde L. Solubility, structure, and morphology in the co-precipitation of cadmium and zinc with calcium-oxalate. J Colloid Interface Sci 2017; 486:309-315. [DOI: 10.1016/j.jcis.2016.09.079] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 09/29/2016] [Indexed: 11/27/2022]
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Javed H, Naeem A, Rengel Z, Dahlawi S. Timing of foliar Zn application plays a vital role in minimizing Cd accumulation in wheat. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:16432-9. [PMID: 27164881 DOI: 10.1007/s11356-016-6822-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 05/02/2016] [Indexed: 05/27/2023]
Abstract
Due to chemical and biochemical similarities between cadmium (Cd) and zinc (Zn), application of Zn may minimize Cd uptake by plants and ameliorate its toxicity. However, there is poor understanding of the comparative effectiveness of the foliar Zn application at different growth stages on Cd toxicity and accumulation in wheat. The present study was carried out to compare the effectiveness of foliarly applied Zn at different stages of plant growth to minimize Cd accumulation in wheat grains. Wheat (cv AARI-2011) was grown at three levels of soil Cd (0, 2.5, and 5.0 mg kg(-1)). Foliar application of Zn was carried out at either tillering, jointing, booting, heading, or grain filling stage using 0.05 % w/v aqueous solution of ZnSO4 · 7H2O. Increasing soil Cd had a negative effect on growth and yield attributes, including tiller production, root length and dry weight, plant height, 100-grain weight and grain and straw yield. Zinc foliar spray increased grain yield by increasing tiller production; importantly, an application at booting was more effective than at other stages. Foliarly applied Zn decreased Cd concentration in the roots, straw, and grain. Similar to grain yield, the largest decrease (74 %) in Cd concentration was associated with Zn foliar spray at booting. Grain yield was negatively related to grain Cd concentration which in turn showed a negative relationship with Zn concentration in leaves and grains. It is concluded that the booting stage is the suitable time for foliar application of Zn to (i) effectively minimize a Cd-induced loss in grain yield and (ii) decrease grain Cd concentration.
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Affiliation(s)
- Hina Javed
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Asif Naeem
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
- Soil Science Division, Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, 38000, Pakistan
| | - Zed Rengel
- School of Earth and Environment, University of Western Australia, 35 Sterling Highway, Crawley, WA, 6009, Australia
| | - Saad Dahlawi
- Department of Environmental Health, College of Applied Medical Sciences, University of Dammam, Dammam, Kingdom of Saudi Arabia
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25
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Quraishi SM, Adams SV, Shafer M, Meliker JR, Li W, Luo J, Neuhouser ML, Newcomb PA. Urinary cadmium and estimated dietary cadmium in the Women's Health Initiative. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2016; 26:303-8. [PMID: 26015077 PMCID: PMC5077304 DOI: 10.1038/jes.2015.40] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 04/17/2015] [Indexed: 05/04/2023]
Abstract
Cadmium, a heavy metal dispersed in the environment as a result of industrial and agricultural applications, has been implicated in several human diseases including renal disease, cancers, and compromised bone health. In the general population, the predominant sources of cadmium exposure are tobacco and diet. Urinary cadmium (uCd) reflects long-term exposure and has been frequently used to assess cadmium exposure in epidemiological studies; estimated dietary intake of cadmium (dCd) has also been used in several studies. The validity of dCd in comparison with uCd is unclear. This study aimed to compare dCd, estimated from food frequency questionnaires, to uCd measured in spot urine samples from 1,002 participants of the Women's Health Initiative. Using linear regression, we found that dCd was not statistically significantly associated with uCd (β=0.006, P-value=0.14). When stratified by smoking status, dCd was not significantly associated with uCd both in never smokers (β=0.006, P-value=0.09) and in ever smokers (β=0.003, P-value=0.67). Our results suggest that because of the lack of association between estimated dCd and measured uCd, dietary estimation of cadmium exposure should be used with caution in epidemiologic studies.
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Affiliation(s)
- Sabah M Quraishi
- Department of Epidemiology, University of Washington, Seattle, Washington, USA
- Fred Hutchinson Cancer Research Center, Cancer Prevention, Public Health Sciences, Seattle, Washington, USA
| | - Scott V Adams
- Fred Hutchinson Cancer Research Center, Cancer Prevention, Public Health Sciences, Seattle, Washington, USA
| | - Martin Shafer
- Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Jaymie R Meliker
- Department of Preventive Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Wenjun Li
- Department of Medicine, University of Massachusetts, Worcester, Massachusetts, USA
| | - Juhua Luo
- Department of Epidemiology and Biostatistics, Indiana University School of Public Health-Bloomington, Bloomington, Indiana, USA
| | - Marian L Neuhouser
- Fred Hutchinson Cancer Research Center, Cancer Prevention, Public Health Sciences, Seattle, Washington, USA
| | - Polly A Newcomb
- Fred Hutchinson Cancer Research Center, Cancer Prevention, Public Health Sciences, Seattle, Washington, USA
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Wang P, Deng X, Huang Y, Fang X, Zhang J, Wan H, Yang C. Comparison of subcellular distribution and chemical forms of cadmium among four soybean cultivars at young seedlings. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:19584-95. [PMID: 26272289 DOI: 10.1007/s11356-015-5126-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 07/27/2015] [Indexed: 06/04/2023]
Abstract
The hydroponic experiment was carried out to investigate the Cd subcellular distribution and chemical forms in roots and shoots among four soybean seedling cultivars with two Cd treatments. HX3 and GC8, two tolerant and low-grain-Cd-accumulating cultivars, had the lowest Cd concentration in roots and high Cd concentration in shoots, while BX10 and ZH24, two sensitive and high-grain-Cd-accumulating cultivars, had the highest Cd concentration in roots and the lowest Cd concentration in shoots at young seedling stage. Furthermore, the sequence of Cd subcellular distribution in roots at two Cd levels was cell wall (53.4-75.5 %) > soluble fraction (15.8-40.4 %) > organelle fraction (2.0-14.7 %), but in shoots, was soluble fraction (39.3-74.8 %) > cell wall (16.0-52.0 %) > organelle (4.8-19.5 %). BX10 and ZH24 had higher Cd concentration in all subcellular fractions in roots, but HX3 and GC8 had higher Cd concentration of soluble fraction in shoots. The sequence of Cd chemical forms in roots was FNacl (64.1-79.5 %) > FHAC (3.4-21.5 %) > Fd-H2O (3.6-13.0 %) > Fethanol (1.4-21.8) > FHCl (0.3-1.6 %) > Fother (0.2-1.4 %) at two Cd levels but, in shoots, was FNacl (19.7-51.4 %) ≥ FHAC (10.2-31.4 %) ≥ Fd-H2O (8.8-28.2 %) ≥ Fethanol (8.9-38.6 %) > FHCl (0.2-9.6 %) > Fother (2.5-11.2 %). BX10 and ZH24 had higher Cd concentrations in each extracted solutions from roots, but from shoots for GC8 and HX3. Taken together, the results uncover that root cell walls and leaf vacuoles might play important roles in Cd detoxification and limiting the symplastic movement of Cd.
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Affiliation(s)
- Peng Wang
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, Guangdong Sub-center of National Center for Soybean Improvement, College of Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Xiaojuan Deng
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, Guangdong Sub-center of National Center for Soybean Improvement, College of Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Yian Huang
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, Guangdong Sub-center of National Center for Soybean Improvement, College of Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Xiaolong Fang
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, Guangdong Sub-center of National Center for Soybean Improvement, College of Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Jie Zhang
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, Guangdong Sub-center of National Center for Soybean Improvement, College of Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Haibo Wan
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, Guangdong Sub-center of National Center for Soybean Improvement, College of Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Cunyi Yang
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, Guangdong Sub-center of National Center for Soybean Improvement, College of Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China.
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27
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Huang Y, Keller AA. EDTA functionalized magnetic nanoparticle sorbents for cadmium and lead contaminated water treatment. WATER RESEARCH 2015; 80:159-168. [PMID: 26001282 DOI: 10.1016/j.watres.2015.05.011] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 05/04/2015] [Accepted: 05/05/2015] [Indexed: 06/04/2023]
Abstract
Cadmium (Cd(2+)) and lead (Pb(2+)) are toxic to human beings and other organisms, and the U.S. Environmental Protection Agency (EPA) has classified both as probable human carcinogens. In this study, a regenerable magnetic ligand particle (Mag-Ligand) which includes a metal-binding organic ligand (EDTA) attached to an iron oxide nanoparticle was developed for rapid removal of Cd(2+) and Pb(2+) as well as other metals from contaminated water. Mag-Ligand showed fast removal ability for both Cd(2+) (<2 h) and Pb(2+) (<15 min) with relatively high sorption capacity (79.4 and 100.2 mg/g for Cd(2+) and Pb(2+), respectively). The removal performance of Mag-Ligand was high across a wide pH range (3-10) as well as in the presence of competitive metal ions (Ca(2+) and Mg(2+)). In addition, Mag-Ligands can be easily regenerated (washed by 1% HCl) and reused several cycles with high sorption capacity. This study indicated that Mag-Ligand is a reusable sorbent for rapid, convenient, and efficient removal of Cd(2+) and Pb(2+) from contaminated aquatic systems.
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Affiliation(s)
- Yuxiong Huang
- Bren School of Environmental Science and Management, University of California at Santa Barbara, CA 93106, USA
| | - Arturo A Keller
- Bren School of Environmental Science and Management, University of California at Santa Barbara, CA 93106, USA.
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Rafiq MT, Aziz R, Yang X, Xiao W, Stoffella PJ, Saghir A, Azam M, Li T. Phytoavailability of cadmium (Cd) to Pak choi (Brassica chinensis L.) grown in Chinese soils: a model to evaluate the impact of soil Cd pollution on potential dietary toxicity. PLoS One 2014; 9:e111461. [PMID: 25386790 PMCID: PMC4227677 DOI: 10.1371/journal.pone.0111461] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 10/02/2014] [Indexed: 11/19/2022] Open
Abstract
Food chain contamination by soil cadmium (Cd) through vegetable consumption poses a threat to human health. Therefore, an understanding is needed on the relationship between the phytoavailability of Cd in soils and its uptake in edible tissues of vegetables. The purpose of this study was to establish soil Cd thresholds of representative Chinese soils based on dietary toxicity to humans and develop a model to evaluate the phytoavailability of Cd to Pak choi (Brassica chinensis L.) based on soil properties. Mehlich-3 extractable Cd thresholds were more suitable for Stagnic Anthrosols, Calcareous, Ustic Cambosols, Typic Haplustalfs, Udic Ferrisols and Periudic Argosols with values of 0.30, 0.25, 0.18, 0.16, 0.15 and 0.03 mg kg-1, respectively, while total Cd is adequate threshold for Mollisols with a value of 0.86 mg kg-1. A stepwise regression model indicated that Cd phytoavailability to Pak choi was significantly influenced by soil pH, organic matter, total Zinc and Cd concentrations in soil. Therefore, since Cd accumulation in Pak choi varied with soil characteristics, they should be considered while assessing the environmental quality of soils to ensure the hygienically safe food production.
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Affiliation(s)
- Muhammad Tariq Rafiq
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
- Department of Environmental Science, International Islamic University, Islamabad, Pakistan
| | - Rukhsanda Aziz
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - Xiaoe Yang
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - Wendan Xiao
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - Peter J. Stoffella
- Indian River Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Fort Pierce, Florida, United States of America
| | - Aamir Saghir
- Institute of Statistics, Zhejiang University, Hangzhou, China
| | - Muhammad Azam
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Tingqiang Li
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
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29
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Wang Q, Zhang J, Zhao B, Xin X, Zhang C, Zhang H. The influence of long-term fertilization on cadmium (Cd) accumulation in soil and its uptake by crops. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:10377-10385. [PMID: 24793068 DOI: 10.1007/s11356-014-2939-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 04/17/2014] [Indexed: 06/03/2023]
Abstract
Continuous application of organic and inorganic fertilizers can affect soil and food quality with respect to heavy metal concentrations. The risk of cadmium (Cd) contamination in a long-term (over 20 years) experimental field in North China with an annual crop rotation of winter wheat and summer maize was investigated. The long-term experiment had a complete randomized block design with seven fertilizer treatments and four replications. The seven fertilizer treatments were (1) organic compost (OM), (2) half organic compost plus half chemical fertilizer (OM + NPK), (3) NPK fertilizer (NPK), (4-6) chemical fertilizers without one of the major nutrients (NP, PK, and NK), and (7) an unamended control (CK). Soil samples from 0 to 20 cm were collected in 1989, 1999, and 2009 to characterize Cd and other soil properties. During the past 20 years, various extents of Cd accumulation were observed in the soil, and the accumulation was mainly affected by atmospheric dry and wet deposition and fertilization. In 2009, the average Cd concentration in the soil was 148 ± 15 μg kg(-1) and decreased in the order of NPK ≈ OM + NKP ≈ PK > NP ≈ NK > OM ≈ CK. Sequential extraction of Cd showed that the acid-soluble fraction (F1, 32 ± 7 %) and the residual fraction (F4, 31 ± 5 %) were the dominant fractions of Cd in the soil, followed by the reducible fraction (F2, 22 ± 5 %) and oxidizable fraction (F3, 15 ± 6 %). The acid-soluble Cd fraction in the soil and Cd accumulation in the crops increased with soil plant available K. Fraction F3 was increased by soil organic C (SOC) and crop yields, but SOC reduced the uptake of soil Cd by crops. The long-term P fertilization resulted in more Cd buildup in the soil than other treatments, but the uptake of Cd by crops was inhibited by the precipitation of Cd with phosphate in the soil. Although soil Cd was slightly increased over the 20 years of intensive crop production, both soil and grain/kernel Cd concentrations were still below the national standards for environmental and food safety.
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Affiliation(s)
- Qingyun Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
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30
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Chen Z, Ai Y, Fang C, Wang K, Li W, Liu S, Li C, Xiao J, Huang Z. Distribution and phytoavailability of heavy metal chemical fractions in artificial soil on rock cut slopes alongside railways. JOURNAL OF HAZARDOUS MATERIALS 2014; 273:165-73. [PMID: 24727018 DOI: 10.1016/j.jhazmat.2014.03.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Revised: 03/04/2014] [Accepted: 03/21/2014] [Indexed: 05/18/2023]
Abstract
Artificial soil is often sprayed onto cut slopes alongside railroad tracks to promote revegetation. This study evaluated the heavy metal content and the distribution of heavy metal chemical fractions in the soil, as well as the uptake of heavy metals by plants. The soil at four sites was determined to be considerably contaminated with Cd and Pb. The concentrations of Cd and Pb increased with the length of time the railway had been in use and decreased further away from the railway tracks. Pb primarily existed in reducible form but as residual fractions, whereas Cd was predominantly in exchangeable form. A correlation analysis indicated that pH, organic matter, and total phosphorus levels were important factors affecting the distribution of the heavy metal chemical fractions. The amounts of exchangeable Pb and Cd in the soil were highly correlated with their amounts in the plants sampled, indicating that the exchangeable fraction is a better indication of heavy metal phytoavailability than the total amount of heavy metals in the soil. Bioaccumulation and translocation factors indicated that Indigofera amblyantha had moderate tolerance and bioaccumulation capability for Pb, as did Leucaena leucocephala for Cd. These two plant species can serve as ideal slope remediation plants.
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Affiliation(s)
- Zhaoqiong Chen
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, Sichuan, PR China; Chengdu Medical College, Chengdu 610500, Sichuan, PR China
| | - Yingwei Ai
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, Sichuan, PR China.
| | - Chen Fang
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, Sichuan, PR China
| | - Kexiu Wang
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, Sichuan, PR China
| | - Wei Li
- Institute of Mountain Hazards and Environment, CAS, Chengdu 610041, Sichuan, PR China
| | - Shui Liu
- Shenzhen Tiehan Ecological Environment Limited Liability Company, Shenzhen 518040, PR China
| | - Chunlin Li
- Qingdao Guanzhong Ecological Limited Liability Company, Qingdao 266102, PR China
| | - Jingyao Xiao
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, Sichuan, PR China
| | - Zhiyu Huang
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, Sichuan, PR China
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31
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Rafiq MT, Aziz R, Yang X, Xiao W, Rafiq MK, Ali B, Li T. Cadmium phytoavailability to rice (Oryza sativa L.) grown in representative Chinese soils. A model to improve soil environmental quality guidelines for food safety. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 103:101-7. [PMID: 24418797 DOI: 10.1016/j.ecoenv.2013.10.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 10/13/2013] [Accepted: 10/16/2013] [Indexed: 05/15/2023]
Abstract
Food chain contamination by cadmium (Cd) is globally a serious health concern resulting in chronic abnormalities. Rice is a major staple food of the majority world population, therefore, it is imperative to understand the relationship between the bioavailability of Cd in soils and its accumulation in rice grain. Objectives of this study were to establish environment quality standards for seven different textured soils based on human dietary toxicity, total Cd content in soils and bioavailable portion of Cd in soil. Cadmium concentrations in polished rice grain were best related to total Cd content in Mollisols and Udic Ferrisols with threshold levels of 0.77 and 0.32mgkg(-1), respectively. Contrastingly, Mehlich-3-extractable Cd thresholds were more suitable for Calcaric Regosols, Stagnic Anthrosols, Ustic Cambosols, Typic Haplustalfs and Periudic Argosols with thresholds values of 0.36, 0.22, 0.17, 0.08 and 0.03mgkg(-1), respectively. Stepwise multiple regression analysis indicated that phytoavailability of Cd to rice grain was strongly correlated with Mehlich-3-extractable Cd and soil pH. The empirical model developed in this study explains the combined effects of soil properties and extractable soil Cd content on the phytoavailability of Cd to polished rice grain. This study indicates that accumulation of Cd in rice is influenced greatly by soil type, which should be considered in assessment of soil safety for Cd contamination in rice. This investigation concluded that the selection of proper soil type for food crop production can help us to avoid the toxicity of Cd in our daily diet.
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Affiliation(s)
- Muhammad T Rafiq
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Department of Environmental Sciences, International Islamic University, Islamabad 44000, Pakistan
| | - Rukhsanda Aziz
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xiaoe Yang
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Wendan Xiao
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Muhammad K Rafiq
- Directorate of Range Management and Forestry, Pakistan Agricultural Research Council, Islamabad 44500, Pakistan
| | - Basharat Ali
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Tingqiang Li
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
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32
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Zhao Y, Fang X, Mu Y, Cheng Y, Ma Q, Nian H, Yang C. Metal pollution (Cd, Pb, Zn, and As) in agricultural soils and soybean, Glycine max, in southern China. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2014; 92:427-32. [PMID: 24519477 DOI: 10.1007/s00128-014-1218-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 01/28/2014] [Indexed: 06/03/2023]
Abstract
Crops produced on metal-polluted agricultural soils may lead to chronic toxicity to humans via the food chain. To assess metal pollution in agricultural soils and soybean in southern China, 30 soybean grain samples and 17 soybean-field soil samples were collected from 17 sites in southern China, and metal concentrations of samples were analyzed by graphite furnace atomic absorption spectrophotometer. The integrated pollution index was used to evaluate if the samples were contaminated by Cd, Pb, Zn and As. Results showed that Cd concentration of 12 samples, Pb concentration of 2 samples, Zn concentration of 2 samples, and As concentrations of 2 samples were above the maximum permissible levels in soils. The integrated pollution index indicated that 11 of 17 soil samples were polluted by metals. Metal concentrations in soybean grain samples ranged from 0.11 to 0.91 mg kg(-1) for Cd; 0.34 to 2.83 mg kg(-1) for Pb; 42 to 88 mg kg(-1) for Zn; and 0.26 to 5.07 mg kg(-1) for As, which means all 30 soybean grain samples were polluted by Pb, Pb/Cd, Cd/Pb/As or Pb/As. Taken together, our study provides evidence that metal pollution is an important concern in agricultural soils and soybeans in southern China.
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Affiliation(s)
- Yunyun Zhao
- Guangdong Subcenter of National Center for Soybean Improvement, Guangzhou, 510642, China
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Wang YM, Kinraide TB, Wang P, Zhou DM, Hao XZ. Modeling rhizotoxicity and uptake of Zn and Co singly and in binary mixture in wheat in terms of the cell membrane surface electrical potential. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:2831-2838. [PMID: 23405885 DOI: 10.1021/es3022107] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The usually negative, but variable electrical potential (ψ0) at the cell membrane (CM) surface influences the surface activities of free ions and the electrical driving force for the transport of ions across the CM. The rhizotoxic effects and uptake of Zn(2+) and Co(2+) singly and in binary mixture in wheat ( Triticum aestivum L.) at three pH values (4.5, 5.5, or 6.1) were examined in terms of the free ion activities of Zn(2+), Co(2+), and H(+) at the CM surface (these ions are denoted {M(n+)}(0)). Toxicity and uptake of Zn(2+) or Co(2+) singly to roots were better correlated with {M(2+)}(0) than with their bulk-phase activities. Studies of toxicant interactions using the electrostatic approach and a response-multiplication model for toxicant mixtures indicated that {Co(2+)}(0) significantly enhanced the toxicity of {Zn(2+)}(0), but {Zn(2+)}(0) did not significantly affect the toxicity of {Co(2+)}(0). {H(+)}(0) substantially enhanced the toxicity of both metal ions. Taking ψo into account improved the correspondence (denoted r(2)) between observed and predicted uptake of both Zn(2+) and Co(2+), and each inhibited the uptake of the other. Results showed that r(2) increased from 0.776 to 0.936 for Zn uptake and improved from 0.805 to 0.951 for Co uptake. Thus electrostatic models for metal toxicity and uptake proved superior to models incorporating only bulk-phase activities of ions.
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Affiliation(s)
- Yi-Min Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China
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Kumar S. Appraisal of heavy metal concentration in selected vegetables exposed to different degrees of pollution in Agra, India. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:2683-2690. [PMID: 22773079 DOI: 10.1007/s10661-012-2739-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Accepted: 06/13/2012] [Indexed: 06/01/2023]
Abstract
The accumulation of air-borne heavy metals in edible parts of vegetables in the chosen areas of the city of Agra, India was investigated. Agra, with a population of 1.7 million, is a medium-sized Indian city where leafy green vegetables are received generally from the surrounding areas of about 50 km radius. Vegetables Basella alba (spinch, locally called palak), Trigonella foenumgraecum (fenugreek, locally called methi), and Coriandrum sativum (coriander, locally called dhania) from the various sites of Agra, India were tested for Pb, Cd, Cr, Ni, and Zn by atomic absorption spectroscopy in washed and unwashed vegetable. The results obtained from this analysis revealed higher concentrations of toxic elements in unwashed samples than the washed samples. Among unwashed samples it was found that concentration of heavy metals is more in areas of busy traffic or industry density. The levels of lead in all samples were found above the maximum permissible limit recommended by PFA for metals in vegetables. The study concludes that transportation and storage systems during marketing play a significant role in determining the contamination and deposition of heavy metal on vegetable surfaces specially of the leafy variety.
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Affiliation(s)
- Suruchi Kumar
- Department of Chemistry, Hindustan College of Science & Technology, Farah, Mathura, 281122, India.
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Pagani MA, Tomas M, Carrillo J, Bofill R, Capdevila M, Atrian S, Andreo CS. The response of the different soybean metallothionein isoforms to cadmium intoxication. J Inorg Biochem 2012; 117:306-15. [PMID: 23073037 DOI: 10.1016/j.jinorgbio.2012.08.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 08/29/2012] [Accepted: 08/29/2012] [Indexed: 10/27/2022]
Abstract
Cadmium is a highly toxic heavy metal for both plants and animals. The presence of Cd in agricultural soils is of major concern regarding its entry into the food chain, since Cd compounds are readily taken up by plants, and accumulated in edible parts due to their high solubility. In this study, we first demonstrate the high capacity for Cd concentration of soybean grains. Consequently, we considered the study and characterization of the molecular determinants of Cd accumulation -such as metallothioneins (MT)- to be of major practical importance. We report here the first characterization of the soybean MT system, with the identification of nine genes (one of which is a truncated pseudogene), belonging to the four plant MT types. The most highly expressed of each type was chosen for further function analysis. All of them are expressed at high levels in soybean tissues: GmMT1, GmMT2 and GmMT3 in roots, shoots and seeds, and GmMT4 only in seeds. The corresponding recombinant soybean MTs, synthesized in Escherichia coli cells cultured in metal supplemented media, exhibit greater cadmium than zinc binding capacity. These results suggest a definite role of GmMTs in Cd(II) accumulation as one of the main responses of soybean to an overload of this metal.
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Affiliation(s)
- M A Pagani
- Centro de Estudios Fotosintéticos y Bioquímicos, CONICET, Suipacha 531, 2000 Rosario, Argentina.
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Salazar MJ, Rodriguez JH, Leonardo Nieto G, Pignata ML. Effects of heavy metal concentrations (Cd, Zn and Pb) in agricultural soils near different emission sources on quality, accumulation and food safety in soybean [Glycine max (L.) Merrill]. JOURNAL OF HAZARDOUS MATERIALS 2012; 233-234:244-53. [PMID: 22835772 DOI: 10.1016/j.jhazmat.2012.07.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 06/04/2012] [Accepted: 07/09/2012] [Indexed: 05/08/2023]
Abstract
Argentina is one of the major producers of soybean in the world, this generates a high global demand for this crop leading to find it everywhere, even close to human activities involving pollutant emissions. This study evaluated heavy metal content, the transfer of metals and its relation to crop quality, and the toxicological risk of seed consumption, through soil and soybean sampling. The results show that concentrations of Pb and Cd in soils and soybeans at several sites were above the maximum permissible levels. The heavy metal bioaccumulation depending on the rhizosphere soil compartment showed significant and high regression coefficients. In addition, the similar behavior of Cd and Zn accumulation by plants reinforces the theory of other studies indicating that these metals are incorporated into the plant for a common system of transport. On the other hand, the seed quality parameters did not show a clear pattern of response to metal bioacumulation. Taken together, our results show that soybeans grown nearby to anthropic emission sources might represent a toxicological hazard for human consumption in a potential Chinese consumer. Hence, further studies should be carried out taking into account the potential negative health effects from the consumption of soybeans (direct or indirect through consumption of meat from cattle) in these conditions.
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Affiliation(s)
- María Julieta Salazar
- Multidisciplinary Institute of Plant Biology, Pollution and Bioindicator Section, Faculty of Physical and Natural Sciences, National University of Córdoba, Córdoba, Argentina
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Priester JH, Ge Y, Mielke RE, Horst AM, Moritz SC, Espinosa K, Gelb J, Walker SL, Nisbet RM, An YJ, Schimel JP, Palmer RG, Hernandez-Viezcas JA, Zhao L, Gardea-Torresdey JL, Holden PA. Soybean susceptibility to manufactured nanomaterials with evidence for food quality and soil fertility interruption. Proc Natl Acad Sci U S A 2012; 109:E2451-6. [PMID: 22908279 PMCID: PMC3443164 DOI: 10.1073/pnas.1205431109] [Citation(s) in RCA: 240] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Based on previously published hydroponic plant, planktonic bacterial, and soil microbial community research, manufactured nanomaterial (MNM) environmental buildup could profoundly alter soil-based food crop quality and yield. However, thus far, no single study has at once examined the full implications, as no studies have involved growing plants to full maturity in MNM-contaminated field soil. We have done so for soybean, a major global commodity crop, using farm soil amended with two high-production metal oxide MNMs (nano-CeO(2) and -ZnO). The results provide a clear, but unfortunate, view of what could arise over the long term: (i) for nano-ZnO, component metal was taken up and distributed throughout edible plant tissues; (ii) for nano-CeO(2), plant growth and yield diminished, but also (iii) nitrogen fixation--a major ecosystem service of leguminous crops--was shut down at high nano-CeO(2) concentration. Juxtaposed against widespread land application of wastewater treatment biosolids to food crops, these findings forewarn of agriculturally associated human and environmental risks from the accelerating use of MNMs.
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Affiliation(s)
- John H. Priester
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
| | - Yuan Ge
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
| | - Randall E. Mielke
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Division of Geological and Planetary Sciences, NASA/Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91101
| | - Allison M. Horst
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
| | | | | | | | - Sharon L. Walker
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521
| | - Roger M. Nisbet
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA 93106
| | - Youn-Joo An
- Department of Environmental Science, Konkuk University, Seoul 143–701, Korea
| | - Joshua P. Schimel
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA 93106
| | - Reid G. Palmer
- Department of Agronomy, Iowa State University, Ames, IA 50011
- Corn Insects and Crop Genetics Research Unit, Agricultural Research Service, US Department of Agriculture, Ames, IA 50011; and
| | - Jose A. Hernandez-Viezcas
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968
| | - Lijuan Zhao
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968
| | - Jorge L. Gardea-Torresdey
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
- Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968
| | - Patricia A. Holden
- Bren School of Environmental Science and Management
- Earth Research Institute, and
- University of California Center for the Environmental Implications of Nanotechnology, University of California, Santa Barbara, CA 93106
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Remans T, Thijs S, Truyens S, Weyens N, Schellingen K, Keunen E, Gielen H, Cuypers A, Vangronsveld J. Understanding the development of roots exposed to contaminants and the potential of plant-associated bacteria for optimization of growth. ANNALS OF BOTANY 2012; 110:239-52. [PMID: 22634257 PMCID: PMC3394651 DOI: 10.1093/aob/mcs105] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 03/28/2012] [Indexed: 05/24/2023]
Abstract
BACKGROUND AND SCOPE Plant responses to the toxic effects of soil contaminants, such as excess metals or organic substances, have been studied mainly at physiological, biochemical and molecular levels, but the influence on root system architecture has received little attention. Nevertheless, the precise position, morphology and extent of roots can influence contaminant uptake. Here, data are discussed that aim to increase the molecular and ecological understanding of the influence of contaminants on root system architecture. Furthermore, the potential of plant-associated bacteria to influence root growth by their growth-promoting and stress-relieving capacities is explored. METHODS Root growth parameters of Arabidopsis thaliana seedlings grown in vertical agar plates are quantified. Mutants are used in a reverse genetics approach to identify molecular components underlying quantitative changes in root architecture after exposure to excess cadmium, copper or zinc. Plant-associated bacteria are isolated from contaminated environments, genotypically and phenotypically characterized, and used to test plant root growth improvement in the presence of contaminants. KEY RESULTS The molecular determinants of primary root growth inhibition and effects on lateral root density by cadmium were identified. A vertical split-root system revealed local effects of cadmium and copper on root development. However, systemic effects of zinc exposure on root growth reduced both the avoidance of contaminated areas and colonization of non-contaminated areas. The potential for growth promotion and contaminant degradation of plant-associated bacteria was demonstrated by improved root growth of inoculated plants exposed to 2,4-di-nitro-toluene (DNT) or cadmium. CONCLUSIONS Knowledge concerning the specific influence of different contaminants on root system architecture and the molecular mechanisms by which this is achieved can be combined with the exploitation of plant-associated bacteria to influence root development and increase plant stress tolerance, which should lead to more optimal root systems for application in phytoremediation or safer biomass production.
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Affiliation(s)
- Tony Remans
- Environmental Biology, Hasselt University, Diepenbeek, Belgium.
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Bhaduri AM, Fulekar MH. Assessment of arbuscular mycorrhizal fungi on the phytoremediation potential of Ipomoea aquatica on cadmium uptake. 3 Biotech 2012. [PMCID: PMC3433885 DOI: 10.1007/s13205-012-0046-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The phytoremedial potential of Ipomoea aquatica and role of arbuscular mycorrhizal fungi (AMF) during Cadmium uptake was studied under two different soils i.e., soil inoculated with and without AMF. The plants were treated with different concentrations of Cd(NO)3 starting from 0, 5, 10, 25, 50, and 100 ppm in three replicate design in soil with and without AMF inoculation. Results showed that AMF enhanced accumulation of cadmium in plant tissues at all concentrations. Plants in AMF exhibited tolerance for Cd up to 100 mg/l and accumulated 88.07% in its tissues with no visual symptoms of toxicity, whereas those in non-AMF showed marked growth reduction at the same concentration with a metal accumulation of 73.2%. A significant variation of antioxidant enzymes under different environments evaluated the defense pathways of plants during uptake of Cd. Physiological changes and nutrient uptake showed that plants inoculated in AMF were more unwavering during stress conditions. The study established that phytoremedial potential of I. aquatica depends on rhizospheric conditions which enhanced Cd uptake. Finally, it was established that AMF was able to maintain an efficient symbiosis with I. aquatica in soil moderately contaminated by Cd, viable due to relation between fungus and plant.
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Affiliation(s)
- Anwesha M. Bhaduri
- Environmental Biotechnology Laboratory, Department of Life Sciences, University of Mumbai, Santacruz (E), Mumbai, 400098 India
| | - M. H. Fulekar
- Environmental Biotechnology Laboratory, Department of Life Sciences, University of Mumbai, Santacruz (E), Mumbai, 400098 India
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Inoculation with a bacterial consortium alleviates the effect of cadmium overdose in soybean plants. Open Life Sci 2010. [DOI: 10.2478/s11535-010-0025-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
AbstractInoculating plants that have inefficient antioxidant systems with plant-associated bacteria allows them to overcome heavy metal intoxication. We monitored protein oxidation, the activity of plant defense system enzymes, and the phenolics content in soybean (Glycine max L.) during a prolonged exposure to cadmium (Cd). The assistance of the bacterial consortium reduced the bioavailability of Cd in a soil containing 10 times the metal’s Standard Maximum Value (SMV). This reduced the accumulation of Cd in the soybeans’ roots and seeds. At 100 SMV, bacterial inoculation resulted in increased Cd bioavailability, which enhanced cadmium uptake by the soybean plants. At both Cd concentrations, oxidative stress was more prolonged in the soybean’s roots than its leaves. In cadmium-polluted soil, glutathion peroxidase activity changed more rapidly in the roots of plants when they had been inoculated. Inhibition of the peroxidases’ activities strengthened the activity of glutathione-S-transferase; increased the phenolics content in plant roots; and alleviated stress in inoculated soybean plants compared to untreated plants. The bacterial consortium may be recommended for a plant protection at 10 SMV Cd in the soil, and for phytostabilization at 100 SMV.
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Durand TC, Sergeant K, Planchon S, Carpin S, Label P, Morabito D, Hausman JF, Renaut J. Acute metal stress in Populus tremula x P. alba (717-1B4 genotype): leaf and cambial proteome changes induced by cadmium 2+. Proteomics 2010; 10:349-68. [PMID: 20148406 DOI: 10.1002/pmic.200900484] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The comprehension of metal homeostasis in plants requires the identification of molecular markers linked to stress tolerance. Proteomic changes in leaves and cambial zone of Populus tremula x P. alba (717-1B4 genotype) were analyzed after 61 days of exposure to cadmium (Cd) 360 mg/kg soil dry weight in pot-soil cultures. The treatment led to an acute Cd stress with a reduction of growth and photosynthesis. Cd stress induced changes in the display of 120 spots for leaf tissue and 153 spots for the cambial zone. It involved a reduced photosynthesis, resulting in a profound reorganisation of carbon and carbohydrate metabolisms in both tissues. Cambial cells underwent stress from the Cd actually present inside the tissue but also a deprivation of photosynthates caused by leaf stress. An important tissue specificity of the response was observed, according to the differences in cell structures and functions.
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Affiliation(s)
- Thomas C Durand
- CRP-Gabriel Lippmann, Department Environment and Agro-biotechnologies, Belvaux, GD, Luxembourg
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Singh A, Sharma RK, Agrawal SB. Effects of fly ash incorporation on heavy metal accumulation, growth and yield responses of Beta vulgaris plants. BIORESOURCE TECHNOLOGY 2008; 99:7200-7207. [PMID: 18280142 DOI: 10.1016/j.biortech.2007.12.064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2007] [Revised: 12/19/2007] [Accepted: 12/20/2007] [Indexed: 05/25/2023]
Abstract
Use of fly ash (FA) to agriculture is not always beneficial, however, utilization of lower concentration of FA as soil amendment is suitable for better management of few crops. The present study was conducted to study the effects of various concentrations of FA (0%, 5%, 10%, 15% and 20%) on heavy metal accumulation, growth, and yield responses of palak (Beta vulgaris L. var All Green H1). The results showed that application of FA caused significant reductions in growth, biomass and yield responses of B. vulgaris plants at different ages of observations. The concentrations of all the heavy metals increased significantly with increasing concentrations of FA. Metal pollution index (MPI) of both roots and shoots showed significant and negative relationships with the yield of B. vulgaris plants. The study concludes that B. vulgaris plant is sensitive to FA concentrations used in this study. It is further recommended that leafy vegetable like B. vulgaris is not a suitable crop to be grown in a region where FA is used for amendment of agricultural soils.
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Affiliation(s)
- Anurag Singh
- Ecology Research Laboratory, Department of Botany, Banaras Hindu University, Varanasi-221005, India
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Shentu J, He Z, Yang XE, Li T. Accumulation properties of cadmium in a selected vegetable-rotation system of southeastern China. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:6382-6388. [PMID: 18593175 DOI: 10.1021/jf800882q] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A rotation experiment was conducted in a greenhouse with three vegetable crops on red yellowish soil (RYS) and silt loamy soil (SLS) to study Cd accumulation in pak choi ( Brassica chinensis L.), tomato ( Lycopersicon esculentum), and radish ( Raphanus sativus L.). Critical Cd concentrations in the two soils were evaluated for these vegetables based on human dietary toxicity. Cadmium was added as Cd(NO 3) 2 at a rate of 0-7.00 mg Cd kg (-1) soil. Shoot growth was not inhibited by Cd except for radish grown on RYS. A small amount of Cd stimulated growth of the vegetables. Cadmium concentration in edible parts of the vegetables generally increased with Cd concentration in soils but was higher in RYS than SLS. The distribution of Cd in pak choi and tomato decreased in the order root > shoot > fruit, but the order was shoot > root for radish. When Cd content in the edible parts reached maximum contaminant levels for safety food standards, the soil total Cd concentrations were 0.327 and 0.120 mg kg (-1) in RYS and 0.456 and 0.368 mg kg (-1) in SLS for pak choi stem and radish, respectively, whereas ammonium acetate-extractable Cd was 0.066 and 0.089 mg kg (-1) in RYS and 0.116 and 0.092 mg kg (-1) in SLS for pak choi leaf and tomato, respectively, based on food safety standards.
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Affiliation(s)
- Jiali Shentu
- Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Sciences, Zhejiang University,Hangzhou 310029, People's Republic of China.
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