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Gu Y, Fan X, Jiang K, Liu P, Chang H, Andom O, Cheng J, Li Z. Omics analysis of 'Shine Muscat' grape grafted on different rootstocks in response to cadmium stress. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 936:173472. [PMID: 38788947 DOI: 10.1016/j.scitotenv.2024.173472] [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: 11/27/2023] [Revised: 05/09/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
Cadmium (Cd) is detrimental to grape growth, development, and fruit quality. Grafting is considered to be a useful method to improve plant adaptability to Cd stress in grape production. However, little information is available on how Cd stress affects grafted grapes. In this study, the effects of Cd on Shine Muscat grapes (Vitis vinifera L. cv. 'Shine Muscat') were studied under different "Cd treatments" concentrations (0, 0.2, 0.4, 0.8, 1.6, 3.2 mg kg-1) and "rootstock treatments" (SO4, 5BB, and 3309C). The results showed that low levels of Cd had hormesis effect and activated the grape antioxidant system to eliminate the ROS induced by Cd stress. The antioxidant capacity of the SM/3309C rootstock combination was stronger than that of the other two groups under low-concentration Cd stress. Moreover, the rootstock effectively sequestered a substantial amount of Cd, consequently mitigating the upward translocation of Cd to the aboveground portions. Transcriptomic and metabolomic analysis revealed several important pathways enriched in ABC transporters, flavonoid biosynthesis, Plant hormone signal transduction, phenylpropanoid biosynthesis, and glutathione metabolism under Cd stress. WGCNA analysis identified a hub gene, R2R3-MYB15, which could promote the expression of several genes (PAL, 4CL, CYP73A, ST, CHS, and COMT), and alleviate the damage caused by Cd toxicity. These findings might shed light on the mechanism of hormesis triggered by low Cd stress in grapes at the transcriptional and metabolic levels.
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Affiliation(s)
- Yafeng Gu
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai 264025, Shandong Province, China; Yantai Institute, China Agricultural University, 2006 Binhaizhong Road, Yantai 264670, Shandong Province, China
| | - Xiaobin Fan
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai 264025, Shandong Province, China
| | - Ke Jiang
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai 264025, Shandong Province, China
| | - Pin Liu
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai 264025, Shandong Province, China
| | - Huiqing Chang
- College of Agriculture, Henan University of Science and Technology, 263 Kaiyuanda Road, Luoyang 471003, Henan Province, China
| | - Okbagaber Andom
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jieshan Cheng
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai 264025, Shandong Province, China.
| | - Zhaojun Li
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Yang W, Hu Y, Liu J, Rao X, Huang X, Guo X, Zhang J, Rensing C, Xing S, Zhang L. Physiology and transcriptomic analysis revealed the mechanism of silicon promoting cadmium accumulation in Sedum alfredii Hance. CHEMOSPHERE 2024; 360:142417. [PMID: 38797210 DOI: 10.1016/j.chemosphere.2024.142417] [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: 04/21/2024] [Revised: 05/15/2024] [Accepted: 05/22/2024] [Indexed: 05/29/2024]
Abstract
Silicon (Si) effectively promote the yield of many crops, mainly due to its ability to enhance plants resistance to stress. However, how Si helps hyperaccumulators to extract Cadmium (Cd) from soil has remained unclear. In this study, Sedum alfredii Hance (S. alfredii) was used as material to study how exogenous Si affected biomass, Cd accumulation, antioxidation, cell ultrastructure, subcellular distribution and changes in gene expression after Cd exposure. The study has shown that as Si concentration increases (1, 2 mM), the shoot biomass of plants increased by 33.1%-63.6%, the Cd accumulation increased by 31.9%-96.6%, and the chlorophyll, carotenoid content, photosynthetic gas exchange parameters significantly increased. Si reduced Pro and MDA, promoted the concentrations of SOD, CAT and POD to reduce antioxidant stress damage. In addition, Si promoted GSH and PC to chelate Cd in vacuoles, repaired damaged cell ultrastructure, improved the fixation of Cd and cell wall (especially in pectin), and reduced the toxic effects of Cd. Transcriptome analysis found that genes encoding Cd detoxification, Cd absorption and transport were up-regulated by Si supplying, including photosynthetic pathways (PSB, LHCB, PSA), antioxidant defense systems (CAT, APX, CSD, RBOH), cell wall biosynthesis such as pectinesterase (PME), chelation (GST, MT, NAS, GR), Cd absorption (Nramp3, Nramp5, ZNT) and Cd transport (HMA, PCR). Our result revealed the tentative mechanism of Si promotes Cd accumulation and enhances Cd tolerance in S. alfredii, and thereby provides a solid theoretical support for the practical use of Si fertilizer in phytoextraction.
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Affiliation(s)
- Wenhao Yang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Ying Hu
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Jing Liu
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Xinhao Rao
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Xinyu Huang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Xingjie Guo
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - JinLin Zhang
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Center for Grassland Microbiome, State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Christopher Rensing
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Shihe Xing
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Liming Zhang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Yu Y, Alseekh S, Zhu Z, Zhou K, Fernie AR. Multiomics and biotechnologies for understanding and influencing cadmium accumulation and stress response in plants. PLANT BIOTECHNOLOGY JOURNAL 2024. [PMID: 38817148 DOI: 10.1111/pbi.14379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 03/04/2024] [Accepted: 05/03/2024] [Indexed: 06/01/2024]
Abstract
Cadmium (Cd) is one of the most toxic heavy metals faced by plants and, additionally, via the food chain, threatens human health. It is principally dispersed through agro-ecosystems via anthropogenic activities and geogenic sources. Given its high mobility and persistence, Cd, although not required, can be readily assimilated by plants thereby posing a threat to plant growth and productivity as well as animal and human health. Thus, breeding crop plants in which the edible parts contain low to zero Cd as safe food stuffs and harvesting shoots of high Cd-containing plants as a route for decontaminating soils are vital strategies to cope with this problem. Recently, multiomics approaches have been employed to considerably enhance our understanding of the mechanisms underlying (i) Cd toxicity, (ii) Cd accumulation, (iii) Cd detoxification and (iv) Cd acquisition tolerance in plants. This information can be deployed in the development of the biotechnological tools for developing plants with modulated Cd tolerance and detoxification to safeguard cellular and genetic integrity as well as to minimize food chain contamination. The aim of this review is to provide a current update about the mechanisms involved in Cd uptake by plants and the recent developments in the area of multiomics approach in terms of Cd stress responses, as well as in the development of Cd tolerant and low Cd accumulating crops.
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Affiliation(s)
- Yan Yu
- School of Agronomy, Anhui Agricultural University, Hefei, China
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Saleh Alseekh
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
- Center of Plant Systems Biology and Biotechnology, Plovdiv, Bulgaria
| | - Zonghe Zhu
- School of Agronomy, Anhui Agricultural University, Hefei, China
| | - Kejin Zhou
- School of Agronomy, Anhui Agricultural University, Hefei, China
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
- Center of Plant Systems Biology and Biotechnology, Plovdiv, Bulgaria
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Rezvani Ghalhari M, Rezaei Rahimi N, Fahiminia M, Noruzzade E, Azhdarpoor A, Koochakzadeh Z, Vakili H, Fouladi-Fard R. Analyzing heavy metal contamination for one of the high-rate consumption fruits in Iran: A probabilistic health risk assessment. Heliyon 2024; 10:e30392. [PMID: 38737238 PMCID: PMC11088310 DOI: 10.1016/j.heliyon.2024.e30392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/14/2024] [Accepted: 04/25/2024] [Indexed: 05/14/2024] Open
Abstract
Good health and well-being is one of the sustainable development goals (SDGs) that can be achieved through fruit consumption. This study measured cucumber (Cucumis sativus L.) heavy metal concentrations. Inductively coupled plasma-mass spectrometry (ICP-OES) was used to analyze the samples for heavy metal content. The uncertainty and sensitivity analyses of carcinogenic and non-carcinogenic heavy metal intake via cucumber (Cucumis sativus L.) consumption were assessed by Monte Carlo simulation. The mean ± SD levels of Cu, Pb, Zn, Cd, and As were determined to be 157.87 ± 128.54, 33.81 ± 6.27, 288.46 ± 114.59, 35.22 ± 18.67, and 33.6 ± 18.1 μg/kg, respectively. The 95th percentile of HI related to heavy metal intake via cucumber (Cucumis sativus L.) among children and adults were 2.64 and 1.75, respectively. Also, the 95th percentile of ELCR related to heavy metal were 8.26E-4 and 4.14E-3 among children and adults, respectively. The 95th percentile of LTCR of As among adults and As, Cd, and Pb among children were in the WHO target range (1E-04 to 1E-06) so reducing the concentration of them can help to reduce overall LTCR. When HQ and LTCR are below the cut limits, reducing heavy metals in high-consumption meals is a good way to lower them. In general, due to the wide consumption of various fruits, such as cucumber (Cucumis sativus L.), the concentration of environmental pollutants in their edible tissues should be monitored regularly, and the concentration of pollutants in these tissues should be minimized by proper planning.
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Affiliation(s)
- Mohammad Rezvani Ghalhari
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Student's Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Nayereh Rezaei Rahimi
- Department of Environmental Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Fahiminia
- Research Center for Environmental Pollutants, Department of Environmental Health Engineering, Faculty of Health, Qom University of Medical Sciences, Qom, Iran
| | - Elahe Noruzzade
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Abooalfazl Azhdarpoor
- Department of Environmental Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zeynab Koochakzadeh
- Research Center for Environmental Pollutants, Department of Environmental Health Engineering, Faculty of Health, Qom University of Medical Sciences, Qom, Iran
| | - Habib Vakili
- Department of Health, Safety and Environment, Pasteur Institute of Iran, Tehran, Iran
| | - Reza Fouladi-Fard
- Research Center for Environmental Pollutants, Department of Environmental Health Engineering, Faculty of Health, Qom University of Medical Sciences, Qom, Iran
- Environmental Health Research Center, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
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Hassan A, Hamid FS, Pariatamby A, Ossai IC, Ahmed A, Barasarathi J, Auta HS. Influence of bioaugmented fungi on tolerance, growth and phytoremediation ability of Prosopis juliflora Sw. DC in heavy metal-polluted landfill soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:28671-28694. [PMID: 38561536 DOI: 10.1007/s11356-024-33018-1] [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: 09/19/2023] [Accepted: 03/16/2024] [Indexed: 04/04/2024]
Abstract
The research aimed to determine the influence of endophytic fungi on tolerance, growth and phytoremediation ability of Prosopis juliflora in heavy metal-polluted landfill soil. A consortium of 13 fungal isolates as well as Prosopis juliflora Sw. DC was used to decontaminate heavy metal-polluted landfill soil. Enhanced plant growth (biomass and root and shoot lengths) and production of carotenoids, chlorophyll and amino acids L-phenylalanine and L-leucine that are known to enhance growth were found in the treated P. juliflora. Better accumulations of heavy metals were observed in fungi-treated P. juliflora over the untreated one. An upregulated activity of peroxidase, catalase and ascorbate peroxidase was recorded in fungi-treated P. juliflora. Additionally, other metabolites, such as glutathione, 3,5,7,2',5'-pentahydroxyflavone, 5,2'-dihydroxyflavone and 5,7,2',3'-tetrahydroxyflavone, and small peptides, which include Lys Gln Ile, Ser Arg Ala, Asp Arg Gly, Arg Ser Ser, His His Arg, Arg Thr Glu, Thr Arg Asp and Ser Pro Arg, were also detected. These provide defence supports to P. juliflora against toxic metals. Inoculating the plant with the fungi improved its growth, metal accumulation as well as tolerance against heavy metal toxicity. Such a combination can be used as an effective strategy for the bioremediation of metal-polluted soil.
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Affiliation(s)
- Auwalu Hassan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- Center for Research in Waste Management, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- Department of Biological Sciences, Faculty of Science, Federal University of Kashere, Kashere, Gombe State, Nigeria.
| | - Fauziah Shahul Hamid
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Center for Research in Waste Management, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Agamuthu Pariatamby
- Jeffrey Sachs Center On Sustainable Development, Sunway University, Sunway, Malaysia
| | - Innocent Chukwunonso Ossai
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Center for Research in Waste Management, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Aziz Ahmed
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Center for Research in Waste Management, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Faculty of Marine Sciences, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Balochistan, Pakistan
| | - Jayanthi Barasarathi
- Faculty of Health and Life Sciences (FHLS), INTI International University, Pesiaran Perdana BBN, Nilai, Negeri Sambilan, Malaysia
| | - Helen Shnada Auta
- Department of Microbiology, Federal University of Technology, Minna, Niger State, Nigeria
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Liu Z, Lu Q, Zhao Y, Wei J, Liu M, Duan X, Lin M. Ameliorating Effects of Graphene Oxide on Cadmium Accumulation and Eco-Physiological Characteristics in a Greening Hyperaccumulator ( Lonicera japonica Thunb.). PLANTS (BASEL, SWITZERLAND) 2023; 13:19. [PMID: 38202327 PMCID: PMC10780341 DOI: 10.3390/plants13010019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 11/25/2023] [Accepted: 11/27/2023] [Indexed: 01/12/2024]
Abstract
Graphene oxide (GO), as a novel carbon-based nanomaterial (CBN), has been widely applied to every respect of social life due to its unique composite properties. The widespread use of GO inevitably promotes its interaction with heavy metal cadmium (Cd), and influences its functional behavior. However, little information is available on the effects of GO on greening hyperaccumulators under co-occurring Cd. In this study, we chose a typical greening hyperaccumulator (Lonicera japonica Thunb.) to show the effect of GO on Cd accumulation, growth, net photosynthesis rate (Pn), carbon sequestration and oxygen release functions of the plant under Cd stress. The different GO-Cd treatments were set up by (0, 10, 50 and 100 mg L-1) GO and (0, 5 and 25 mg L-1) Cd in solution culture. The maximum rate of Cd accumulation in the roots and shoots of the plant were increased by 10 mg L-1 GO (exposed to 5 mg L-1 Cd), indicating that low-concentration GO (10 mg L-1) combined with low-concentration Cd (5 mg L-1) might stimulate the absorption of Cd by L. japonica. Under GO treatments without Cd, the dry weight of root and shoot biomass, Pn value, carbon sequestration per unit leaf area and oxygen release per unit leaf area all increased in various degrees, especially under 10 mg L-1 GO, were 20.67%, 12.04%, 35% and 28.73% higher than the control. Under GO-Cd treatments, it is observed that the cooperation of low-concentration GO (10 mg L-1) and low-concentration Cd (5 mg L-1) could significantly stimulate Cd accumulation, growth, photosynthesis, carbon sequestration and oxygen release functions of the plant. These results indicated that suitable concentrations of GO could significantly alleviate the effects of Cd on L. japonica, which is helpful for expanding the phytoremediation application of greening hyperaccumulators faced with coexistence with environment of nanomaterials and heavy metals.
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Affiliation(s)
- Zhouli Liu
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China; (Q.L.); (J.W.); (X.D.)
- Institute of Carbon Neutrality Technology and Policy, Shenyang University, Shenyang 110044, China
- Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang 110000, China
- Key Laboratory of Black Soil Evolution and Ecological Effect, Ministry of Natural Resources, Shenyang 110000, China
| | - Qingxuan Lu
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China; (Q.L.); (J.W.); (X.D.)
- Institute of Carbon Neutrality Technology and Policy, Shenyang University, Shenyang 110044, China
- Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang 110000, China
- Key Laboratory of Black Soil Evolution and Ecological Effect, Ministry of Natural Resources, Shenyang 110000, China
| | - Yi Zhao
- School of Chemistry and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China
| | - Jianbing Wei
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China; (Q.L.); (J.W.); (X.D.)
- Institute of Carbon Neutrality Technology and Policy, Shenyang University, Shenyang 110044, China
- Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang 110000, China
- Key Laboratory of Black Soil Evolution and Ecological Effect, Ministry of Natural Resources, Shenyang 110000, China
| | - Miao Liu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
| | - Xiangbo Duan
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China; (Q.L.); (J.W.); (X.D.)
- Institute of Carbon Neutrality Technology and Policy, Shenyang University, Shenyang 110044, China
- Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang 110000, China
- Key Laboratory of Black Soil Evolution and Ecological Effect, Ministry of Natural Resources, Shenyang 110000, China
| | - Maosen Lin
- College of Water Conservancy, Shenyang Agricultural University, Shenyang 110161, China
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Gao Y, An T, Kuang Q, Wu Y, Liu S, Liang L, Yu M, Macrae A, Chen Y. The role of arbuscular mycorrhizal fungi in the alleviation of cadmium stress in cereals: A multilevel meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 902:166091. [PMID: 37553055 DOI: 10.1016/j.scitotenv.2023.166091] [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: 01/30/2023] [Revised: 07/13/2023] [Accepted: 08/04/2023] [Indexed: 08/10/2023]
Abstract
The symbiotic relationships between crop species and arbuscular mycorrhizal fungi (AMF) are crucial for plant health, productivity, and environmental sustainability. The roles of AMF in reducing crop stress caused by cadmium (Cd) toxicity and in the remediation of Cd-contaminated soil are not fully understood. Here we report on a meta-analysis that sought to identify the functions of AMF in cereals under Cd stress. A total of 54 articles published between January 1992 and September 2022 were used to create the dataset, which provided 7216 data sets on mycorrhizal cereals under Cd stress examined. AMF effects on colonization rate, biomass, physiological level, nutritional level, and plant Cd level were measured using the logarithmic response ratio (Ln R). The results showed that AMF overall greatly reduced 5.14 - 33.6 % Cd stress on cereals in greenhouse experiments under controlled conditions. AMF colonization significantly stimulated crop biomass by 65.7 %, boosted the formation of photosynthetic pigments (23.2 %), and greatly increased plant nitrogen (24.8 %) and phosphorus (58.4 %) uptake. The dilution effect of mycorrhizal plants made the Cd concentration decline by 25.2 % in AMF plants compared to non-mycorrhizal ones. AMF also alleviated Cd stress by improving osmotic regulators (soluble protein, sugar, and total proline, from 14.8 to 36.0 %) and lowering the membrane lipid peroxidation product (MDA, 12.9 %). Importantly, the results from the random forest and model selection analysis demonstrated that crop type, soil characteristics, chemical form, and Cd levels were the main factors determining the function of AMF in alleviating Cd stress. Additionally, there was a significant interaction between AMF colonization rate and Cd addition, but their interactive effect was less than the colonization rate alone. This meta-analysis demonstrated that AMF inoculation could be considered as a promising strategy for mitigation of Cd stress in cereals.
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Affiliation(s)
- Yamin Gao
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Tingting An
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qiqiang Kuang
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yujie Wu
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shuo Liu
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Liyan Liang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Min Yu
- International Research Center for Environmental Membrane Biology, and Department of Horticulture, Foshan University, Foshan 528000, China; The UWA Institute of Agriculture, and School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia
| | - Andrew Macrae
- Universidade Federal do Rio de Janeiro, Programa Pós-Graduação de Biotecnologia Vegetal e Bioprocessos, Av. Prof. Rodolpho Paulo Rocco, s/n-Prédio do CCS-Bloco K, 2 Andar-Sala 032, Rio de Janeiro 21941-902, Brazil; Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Av. Prof. Rodolpho Paulo Rocco, s/n-Prédio do CCS-Bloco I, 1 Andar-Sala 047, Rio de Janeiro 21941-902, Brazil
| | - Yinglong Chen
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; The UWA Institute of Agriculture, and School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia.
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Cruzado-Tafur E, Orzoł A, Gołębiowski A, Pomastowski P, Cichorek M, Olszewski J, Walczak-Skierska J, Buszewski B, Szultka-Młyńska M, Głowacka K. Metal tolerance and Cd phytoremoval ability in Pisum sativum grown in spiked nutrient solution. JOURNAL OF PLANT RESEARCH 2023; 136:931-945. [PMID: 37676608 PMCID: PMC10587304 DOI: 10.1007/s10265-023-01493-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 08/27/2023] [Indexed: 09/08/2023]
Abstract
In the presented study, the effects of cadmium (Cd) stress and silicon (Si) supplementation on the pea plant (Pisum sativum L.) were investigated. The tendency to accumulate cadmium in the relevant morphological parts of the plant (roots and shoots respectively)-bioaccumulation, the transfer of this element in the plant (translocation) and the physiological parameters of the plant through indicators of oxidative stress were determined. Model studies were carried out at pH values 6.0 and 5.0 plant growth conditions in the hydroponic cultivation. It was shown that Cd accumulates mostly in plant roots at both pH levels. However, the Cd content is higher in the plants grown at lower pH. The Cd translocation factor was below 1.0, which indicates that the pea is an excluder plant. The contamination of the plant growth environment with Cd causes the increased antioxidant stress by the growing parameters of the total phenolic content (TPC), polyphenol oxidase activity (PPO), the malondialdehyde (MDA) and lipid peroxidation (LP). The results obtained showed that the supplementation with Si reduces these parameters, thus lowering the oxidative stress of the plant. Moreover, supplementation with Si leads to a lower content of Cd in the roots and reduces bioaccumulation of Cd in shoots and roots of pea plants.
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Affiliation(s)
- Edith Cruzado-Tafur
- Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1a, 10-719, Olsztyn, Poland
| | - Aleksandra Orzoł
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100, Torun, Poland
| | - Adrian Gołębiowski
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100, Torun, Poland
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Wilenska 4, 87-100, Torun, Poland
| | - Paweł Pomastowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Wilenska 4, 87-100, Torun, Poland
| | - Mateusz Cichorek
- Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1a, 10-719, Olsztyn, Poland
| | - Jacek Olszewski
- Experimental Education Unit, University of Warmia and Mazury in Olsztyn, Plac Łódzki 1, 10-721, Olsztyn, Poland
| | - Justyna Walczak-Skierska
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100, Torun, Poland
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Wilenska 4, 87-100, Torun, Poland
| | - Bogusław Buszewski
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100, Torun, Poland
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Wilenska 4, 87-100, Torun, Poland
| | - Małgorzata Szultka-Młyńska
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100, Torun, Poland
| | - Katarzyna Głowacka
- Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1a, 10-719, Olsztyn, Poland.
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9
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Zhao F, Han Y, Shi H, Wang G, Zhou M, Chen Y. Arsenic in the hyperaccumulator Pteris vittata: A review of benefits, toxicity, and metabolism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 896:165232. [PMID: 37392892 DOI: 10.1016/j.scitotenv.2023.165232] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/03/2023]
Abstract
Arsenic (As) is a toxic metalloid, elevated levels of which in soils are becoming a major global environmental issue that poses potential health risks to humans. Pteris vittata, the first known As hyperaccumulator, has been successfully used to remediate As-polluted soils. Understanding why and how P. vittata hyperaccumulates As is the core theoretical basis of As phytoremediation technology. In this review, we highlight the beneficial effects of As in P. vittata, including growth promotion, elemental defense, and other potential benefits. The stimulated growth of P. vittata induced by As can be defined as As hormesis, but differs from that in non-hyperaccumulators in some aspects. Furthermore, the As coping mechanisms of P. vittata, including As uptake, reduction, efflux, translocation, and sequestration/detoxification are discussed. We hypothesize that P. vittata has evolved strong As uptake and translocation capacities to obtain beneficial effects from As, which gradually leads to As accumulation. During this process, P. vittata has developed a strong As vacuolar sequestration ability to detoxify overloaded As, which enables it to accumulate extremely high As concentrations in its fronds. This review also provides insights into several important research gaps that need to be addressed to advance our understanding of As hyperaccumulation in P. vittata from the perspective of the benefits of As.
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Affiliation(s)
- Fei Zhao
- School of Environment, Nanjing Normal University, Nanjing 210023, China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, Nanjing 210023, China
| | - Yu Han
- School of Environment, Nanjing Normal University, Nanjing 210023, China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, Nanjing 210023, China
| | - Hongyi Shi
- School of Environment, Nanjing Normal University, Nanjing 210023, China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, Nanjing 210023, China
| | - Guoxiang Wang
- School of Environment, Nanjing Normal University, Nanjing 210023, China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, Nanjing 210023, China
| | - Mingxi Zhou
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, 37005 Ceske Budejovice, Czech Republic.
| | - Yanshan Chen
- School of Environment, Nanjing Normal University, Nanjing 210023, China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing Normal University, Nanjing 210023, China.
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10
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Zhou L, Ye L, Pang B, Hou Y, Yu J, Du X, Gu L, Wang H, Zhu B. Overexpression of ApHIPP26 from the Hyperaccumulator Arabis paniculata Confers Enhanced Cadmium Tolerance and Accumulation to Arabidopsis thaliana. Int J Mol Sci 2023; 24:15052. [PMID: 37894733 PMCID: PMC10606507 DOI: 10.3390/ijms242015052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/05/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Cadmium (Cd) is a toxic heavy metal that seriously affects metabolism after accumulation in plants, and it also causes adverse effects on humans through the food chain. The HIPP gene family has been shown to be highly tolerant to Cd stress due to its special domain and molecular structure. This study described the Cd-induced gene ApHIPP26 from the hyperaccumulator Arabis paniculata. Its subcellular localization showed that ApHIPP26 was located in the nucleus. Transgenic Arabidopsis overexpressing ApHIPP26 exhibited a significant increase in main root length and fresh weight under Cd stress. Compared with wild-type lines, Cd accumulated much more in transgenic Arabidopsis both aboveground and underground. Under Cd stress, the expression of genes related to the absorption and transport of heavy metals underwent different changes in parallel, which were involved in the accumulation and distribution of Cd in plants, such as AtNRAMP6 and AtNRAMP3. Under Cd stress, the activities of antioxidant enzymes (superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase) in the transgenic lines were higher than those in the wild type. The physiological and biochemical indices showed that the proline and chlorophyll contents in the transgenic lines increased significantly after Cd treatment, while the malondialdehyde (MDA) content decreased. In addition, the gene expression profile analysis showed that ApHIPP26 improved the tolerance of Arabidopsis to Cd by regulating the changes of related genes in plant hormone signal transduction pathway. In conclusion, ApHIPP26 plays an important role in cadmium tolerance by alleviating oxidative stress and regulating plant hormones, which provides a basis for understanding the molecular mechanism of cadmium tolerance in plants and provides new insights for phytoremediation in Cd-contaminated areas.
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Affiliation(s)
| | | | | | | | | | | | | | - Hongcheng Wang
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (L.Z.); (L.Y.); (B.P.); (Y.H.); (J.Y.); (X.D.); (L.G.)
| | - Bin Zhu
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (L.Z.); (L.Y.); (B.P.); (Y.H.); (J.Y.); (X.D.); (L.G.)
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11
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Zeng Z, Chen J, Liu X, Li Y, Zhang Y, Cai H, Chen J, Rao D, Shen W. Ultrasonic treatment alleviated cadmium stress in sugarcane via improving antioxidant activity and physiological and biochemical status. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115381. [PMID: 37597288 DOI: 10.1016/j.ecoenv.2023.115381] [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: 07/01/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 08/21/2023]
Abstract
Cadmium (Cd) is a toxic element that endangers crop growth and affects food safety and human health. Therefore, the study of Cd mitigation technology is important. Ultrasonic treatment can improve crop growth and enhance their ability to resist various abiotic stresses. In this study, the effect of ultrasonic treatment on alleviating sugarcane Cd stress was studied in a barrel experiment using sugarcane varieties 'ROC22' and 'LC05-136' as test materials. Sugarcane buds without ultrasonic treatment and with ultrasonic treatment (20-40 kHz mixed frequency ultrasound for 2 min, dry treatment) were planted in soil with Cd contents of 0, 50, 100, 250, and 500 mg·kg-1. Compared with non-ultrasonic treatment, Ultrasonic treatment significantly increased the activities of antioxidant enzymes in sugarcane, significantly increased the content of osmoregulation substances, significantly reduced the content of superoxide anion (the highest decreases reached 11.55%) and malondialdehyde (the highest decreases reached 20.59%), and significantly increased the expression level of metallothionein (MT)-related genes, with the expression of ScMT1 increased by 8.80-37.49% and the expression of ScMT2-1-5 increased by 1.55-69.33%. In addition, ultrasonic treatment significantly reduced the Cd contents in sugarcane roots, stems, leaves, bagasse, and juice (the highest reduction in Cd content was 49.18%). In general, ultrasonic treatment regulated the metabolism of reactive oxygen species and MT-related gene expression in sugarcane, increased the Cd tolerance of sugarcane, promoted photosynthesis in sugarcane leaves, improved root morphology, enhanced sugarcane growth, and increased cane and sugar yield.
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Affiliation(s)
- Zhen Zeng
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, China; Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Jiaoyun Chen
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, China; Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Xiangli Liu
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, China; Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Yongjia Li
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, China; Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Yi Zhang
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, China; Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Huabo Cai
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, China; Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Jianwen Chen
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, China; Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Dehua Rao
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Wankuan Shen
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong 510642, China; Sugarcane Research Laboratory, South China Agricultural University, Guangzhou, Guangdong 510642, China.
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12
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Liu Z, An J, Lu Q, Yang C, Mu Y, Wei J, Hou Y, Meng X, Zhao Z, Lin M. Effects of Cadmium Stress on Carbon Sequestration and Oxygen Release Characteristics in A Landscaping Hyperaccumulator- Lonicera japonica Thunb. PLANTS (BASEL, SWITZERLAND) 2023; 12:2689. [PMID: 37514303 PMCID: PMC10385468 DOI: 10.3390/plants12142689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/13/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023]
Abstract
The carbon sequestration and oxygen release of landscape plants are dominant ecological service functions, which can play an important role in reducing greenhouse gases, improving the urban heat island effect and achieving carbon peaking and carbon neutrality. In the present study, we are choosing Lonicera japonica Thunb. as a model plant to show the effects of Cd stress on growth, photosynthesis, carbon sequestration and oxygen release characteristics. Under 5 mg kg-1 of Cd treatment, the dry weight of roots and shoots biomass and the net photosynthetic rate (PN) in L. japonica had a significant increase, and with the increase in Cd treatment concentration, the dry weight of roots and shoots biomass and PN in the plant began to decrease. When the Cd treatment concentration was up to 125 mg kg-1, the dry weight of root and shoots biomass and PN in the plant decreased by 5.29%, 1.94% and 2.06%, and they had no significant decrease compared with the control, indicating that the plant still had a good ability for growth and photoenergy utilization even under high concentrations of Cd stress. The carbon sequestration and oxygen release functions in terms of diurnal assimilation amounts (P), carbon sequestration per unit leaf area (WCO2), oxygen release per unit leaf area (WO2), carbon sequestration per unit land area (PCO2) and oxygen release per unit land area (PO2) in L. japonica had a similar change trend with the photosynthesis responses under different concentrations of Cd treatments, which indicated that L. japonica as a landscaping Cd-hyperaccumulator, has a good ability for carbon sequestration and oxygen release even under high concentrations of Cd stress. The present study will provide a useful guideline for effectively developing the ecological service functions of landscaping hyperaccumulators under urban Cd-contaminated environment.
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Affiliation(s)
- Zhouli Liu
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S & T Innovation Center of China Geological Survey, Shenyang 110000, China
| | - Jing An
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Qingxuan Lu
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S & T Innovation Center of China Geological Survey, Shenyang 110000, China
| | - Chuanjia Yang
- Department of General Surgery, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Yitao Mu
- College of Municipal and Environmental Engineering, Shenyang Urban Construction University, Shenyang 110167, China
| | - Jianbing Wei
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S & T Innovation Center of China Geological Survey, Shenyang 110000, China
| | - Yongxia Hou
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S & T Innovation Center of China Geological Survey, Shenyang 110000, China
| | - Xiangyu Meng
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S & T Innovation Center of China Geological Survey, Shenyang 110000, China
| | - Zhuo Zhao
- College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S & T Innovation Center of China Geological Survey, Shenyang 110000, China
| | - Maosen Lin
- College of Water Conservancy, Shenyang Agricultural University, Shenyang 110161, China
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13
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Liu Z, Tian L, Chen M, Zhang L, Lu Q, Wei J, Duan X. Hormesis Responses of Growth and Photosynthetic Characteristics in Lonicera japonica Thunb. to Cadmium Stress: Whether Electric Field Can Improve or Not? PLANTS (BASEL, SWITZERLAND) 2023; 12:933. [PMID: 36840281 PMCID: PMC9960363 DOI: 10.3390/plants12040933] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/16/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
"Hormesis" is considered a dose-response phenomenon mainly observed at hyperaccumulator plants under heavy metals stress. In this study, the effects of electric fields on hormesis responses in Lonicera japonica Thunb. under cadmium (Cd) treatments were investigated by assessing the plant growth and photosynthetic characteristics. Under Cd treatments without electric fields, the parameters of plant growth and photosynthetic characteristics increased significantly when exposed to 5 mg L-1 Cd, and decreased slightly when exposed to 25 mg L-1 Cd, showing an inverted U-shaped trend, which confirmed that low concentration Cd has a hormesis effect on L. japonica. Under electric fields, different voltages significantly promoted the inverted U-shaped trend of the hormesis effect on the plant, especially by 2 V cm-1 voltage. Under 2 V cm-1 voltage, the dry weight of the root and leaf biomass exposed to 5 mg L-1 Cd increased significantly by 38.38% and 42.14%, and the photosynthetic pigment contents and photosynthetic parameters were also increased significantly relative to the control, indicating that a suitable electric field provides better improvements for the hormesis responses of the plant under Cd treatments. The synergistic benefits of the 5 mg L-1 Cd and 2 V cm-1 electric field in terms of the enhanced hormesis responses of growth and photosynthetic characteristics could contribute to the promoted application of electro-phytotechnology.
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Affiliation(s)
- Zhouli Liu
- Liaoning Key Laboratory of Urban Integrated Pest Management and Ecological Security, College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang 110000, China
| | - Lei Tian
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Mengdi Chen
- Academy of Forest and Grassland Inventory and Planning of National Forestry and Grassland Administration, Beijing 100714, China
| | - Luhua Zhang
- State Owned Ying’emen Forest Farm of Qingyuan Manchu Autonomous County, Fushun 113306, China
| | - Qingxuan Lu
- Liaoning Key Laboratory of Urban Integrated Pest Management and Ecological Security, College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang 110000, China
| | - Jianbing Wei
- Liaoning Key Laboratory of Urban Integrated Pest Management and Ecological Security, College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang 110000, China
| | - Xiangbo Duan
- Liaoning Key Laboratory of Urban Integrated Pest Management and Ecological Security, College of Life Science and Engineering, Shenyang University, Shenyang 110044, China
- Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang 110000, China
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14
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Wang S, Dai H, Cui S, Ji D, Skuza L, Li L, Grzebelus D, Wei S. The effects of salinity and pH variation on hyperaccumulator Bidens pilosa L. accumulating cadmium with dynamic and real-time uptake of Cd 2+ influx around its root apexes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:41435-41444. [PMID: 36631619 DOI: 10.1007/s11356-023-25213-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 01/05/2023] [Indexed: 01/13/2023]
Abstract
Bidens pilosa L. has been confirmed to be a potential Cd hyperaccumulator by some researchers, but the dynamic and real-time uptake of Cd2+ influx by B. pilosa root apexes was a conundrum up to now. The aim of our study was to investigate the effects of salinity and pH variations on the characteristics of Cd2+ influx around the root apexes of B. pilosa. The tested seedlings of B. pilosa were obtained by sand culture experiments in a greenhouse after 1 month from germination, and the Cd2+ influxes from the root apex of B. pilosa under Cd treatments with different salinity and pH levels were determined with application of non-invasive micro-test technology (NMT). The results showed that Cd2+ influxes at 300 μm from the root tips decreased under Cd treatments with 5 mM and 10 mM NaCl, as compared to Cd stress alone. However, Cd treatments with 2.5 mM NaCl had little effect on the net Cd2+ influxes, as compared to Cd treatments alone. Importantly, Cd treatments at pH = 4.0 markedly increased Cd2+ influxes in roots, and Cd treatment at pH = 7.0 had no significant effect on the net Cd2+ influxes compared to Cd treatments at pH = 5.5. Results also showed that Cd treatments with 10 mM NaCl significantly decreased concentrations of chlorophyll (Chl) a and b in leaves and root vigor of B. pilosa relative to Cd treatments alone, while there were no significant differences between Cd treatments with 2.5 mM NaCl and Cd treatments alone. But root vigor was inhibited significantly under Cd treatments with 5 mM and 10 mM NaCl. A significant increase of root vigor was observed in Cd treatments at pH = 4.0, as compared to pH = 5.5. The Cd treatments with high and medium concentrations of NaCl inhibited the uptake of Cd by B. pilosa roots and affected the Chl and root vigor further. But the Cd treatments at pH = 4.0 could promote the Cd uptake and root vigor. Our results revealed the uptake mechanisms of B. pilosa as a potential phytoremediator under different salinity and pH levels combined with Cd contamination and provided a new idea for screening ideal hyperaccumulator and constructing evaluation system.
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Affiliation(s)
- Siqi Wang
- Academy of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang, 110159, Liaoning, China
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Huiping Dai
- College of Biological Science & Engineering, Shaanxi Province Key Laboratory of Bio-Resources, Qinling-Bashan Mountains Bioresources Comprehensive Development C.I.C, State Key Laboratory of Biological Resources and Ecological Environment Jointly Built By Qinba Province and Ministry, Shaanxi University of Technology, Hanzhong, 723001, China
| | - Shuang Cui
- Academy of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang, 110159, Liaoning, China
| | - Dandan Ji
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Lidia Skuza
- Institute of Biology, Centre for Molecular Biology and Biotechnology, University of Szczecin, 71-415, Szczecin, Poland
| | - Lianzhen Li
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Dariusz Grzebelus
- Department of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, 31-120, Krakow, Poland
| | - Shuhe Wei
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
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15
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Qi Z, Han Y, Afrane S, Liu X, Zhang M, Crittenden J, Chen JL, Mao G. Patent mining on soil pollution remediation technology from the perspective of technological trajectory. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120661. [PMID: 36403878 DOI: 10.1016/j.envpol.2022.120661] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/21/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
Recent years have seen a marked growth in soil environmental problems, however, the research & development (R&D) direction of soil pollution remediation technology (SPRT) for addressing related challenges to the global ecosystem is still unclear. Patent is the most effective carrier of technological information. Therefore, this study investigates the status and future direction of SPRT through the analysis and mining of 14,475 patents from 1971 to 2020. In 2006-2020, 14,435 SPRT patents (79% of the total) were published, which is in the development stage. By measuring the proportion of high-value patents, determined by the ratio of the number of patent families containing two or more patents (PF2) to that containing at least one patent (PF1), we found that United States (PF2/PF1 = 0.711), Japan (PF2/PF1 = 0.500), and South Korea (PF2/PF1 = 0.431) hold a monopoly. International patent organizations serve as a bridge for technology transfer. Patent CN101947539-A measured by structural hole index (Effective size = 98.194, Efficiency = 0.926) has the most significant technological influence. Therefore, in order to accomplish the technological transition and improve the soil remediation capacity, more attention should be paid to the microbial-assisted phytoremediation technology related to inorganic pollutants, hyperaccumulators and stabilizers. Additionally, patents CN102834190-A (Effective size = 23.930, Efficiency = 0.855, Constraint = 0.141, Hierarchy = 0.089) and CN105855289 (Effective size = 21.453, Efficiency = 0.795 Constraint = 0.149, Hierarchy = 0.086) are both at the location of structural holes. So, more research should be carried out on green and cost-effective solutions for reducing organic pollutants in soil remediation. The current study identifies opportunities for innovations and breakthroughs in SPRT and offers relevant information on technological development prospects.
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Affiliation(s)
- Zefeng Qi
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China; Center for Green Buildings and Sponge Cities, Georgia Tech Tianjin University Shenzhen Institute, Shenzhen, Guangdong, 518071, China
| | - Yixin Han
- Shandong National Standards Technical Review and Assessment Center, Jinan, 250002, China
| | - Sandylove Afrane
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China; Center for Green Buildings and Sponge Cities, Georgia Tech Tianjin University Shenzhen Institute, Shenzhen, Guangdong, 518071, China
| | - Xi Liu
- Institute of Blue and Green Development, Shandong University, Weihai, 264209, China.
| | - Mingqi Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China; Center for Green Buildings and Sponge Cities, Georgia Tech Tianjin University Shenzhen Institute, Shenzhen, Guangdong, 518071, China
| | - John Crittenden
- Brook Byers Institute for Sustainable Systems, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Jian Lin Chen
- Department of Science, School of Science and Technology, Hong Kong Metropolitan University, Good Shepherd Street, Ho Man Tin, Hong Kong SAR, China; Shenzhen Research Institute of City University of Hong Kong, Shenzhen, China; State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Guozhu Mao
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China; Center for Green Buildings and Sponge Cities, Georgia Tech Tianjin University Shenzhen Institute, Shenzhen, Guangdong, 518071, China
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16
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Min T, Luo T, He H, Qin J, Wang Y, Cheng L, Ru S, Li J. Dissolved organic matter-assisted phytoremediation potential of cotton for Cd-contaminated soil: a relationship between dosage and phytoremediation efficiency. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:84640-84650. [PMID: 35781660 DOI: 10.1007/s11356-022-21485-3] [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: 12/23/2021] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
Dissolved organic matter (DOM) is a novel Cd-contaminated soils amendment for phytoremediation. However, the phytoremediation efficiency for different DOM doses has been insufficiently investigated. In this study, we investigated the effect of five DOM doses (v/w, 0%, 1%, 2%, 4% and 8%) on the phytoremediation efficiency of cotton in Cd-contaminated soil through pot experiment. The results showed that bioavailable Cd concentrations and organic matter in the soil increased with the increased of DOM dosage. The DOM dose increased the chlorophyll content, photosynthesis, and the total biomass of cotton. In addition, the DOM application increased the Cd content in cotton roots and changed the Cd uptake in cotton shoots, increasing shoot Cd extraction efficiency by 8.53-20%. Simultaneously, soil Cd phytoextraction efficiency significantly increased. Furthermore, applying a 1% DOM dose resulted in safeguarding fibre biomass and maximising the efficiency of shoot extraction. Redundancy analysis showed that the Mn content in leaves is critical for increasing cotton biomass, anti-oxidation competence and phytoremediation efficiency under 1% DOM dose. In conclusion, DOM enhanced cotton remediation in Cd-contaminated soils and applying DOM at 1% was a suitable choice for Cd-contaminated soils.
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Affiliation(s)
- Tao Min
- College of Agriculture, Shihezi University, Shihezi, 832003, Xinjiang, People's Republic of China
| | - Tong Luo
- College of Agriculture, Shihezi University, Shihezi, 832003, Xinjiang, People's Republic of China
| | - Hao He
- College of Agriculture, Shihezi University, Shihezi, 832003, Xinjiang, People's Republic of China
| | - Jie Qin
- College of Agriculture, Shihezi University, Shihezi, 832003, Xinjiang, People's Republic of China
| | - Yan Wang
- College of Agriculture, Shihezi University, Shihezi, 832003, Xinjiang, People's Republic of China
| | - Liyang Cheng
- College of Agriculture, Shihezi University, Shihezi, 832003, Xinjiang, People's Republic of China
| | - Sibo Ru
- College of Agriculture, Shihezi University, Shihezi, 832003, Xinjiang, People's Republic of China
| | - Junhua Li
- College of Agriculture, Shihezi University, Shihezi, 832003, Xinjiang, People's Republic of China.
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17
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Emenike EC, Iwuozor KO, Anidiobi SU. Heavy Metal Pollution in Aquaculture: Sources, Impacts and Mitigation Techniques. Biol Trace Elem Res 2022; 200:4476-4492. [PMID: 34813030 DOI: 10.1007/s12011-021-03037-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/15/2021] [Indexed: 01/28/2023]
Abstract
Aquaculture is one of the fastest growing agro-industries as it presently accounts for nearly 50% of all fish for direct human consumption and 43% of total seafood supply. Fish provide about 20% average daily intake of animal protein for about 3.2 billion people globally. The treatment of aquaculture in recent years for the mitigation of heavy metals and other contaminants has been gaining traction due to the benefits of aquaculture to both man and the environment. This paper provides a review of the sources, impacts, and the various methods that have been deployed in recent years by various researchers for the treatment of heavy metal contaminated aquaculture. Related works of literature were obtained and compiled from academic search databases and were carefully analysed in this study. The dangers these metals pose to the sustainability of aquaculture were studied in this review. Studies indicate that some heavy metals, such as mercury, lead, and cadmium, due to their long-term persistence in the environment, allow them to accumulate in the food chain. Mitigation techniques such as adsorption, bio-sorption, and phytoremediation have been deployed for the treatment of heavy metal contaminated aquaculture. Some research gaps were also highlighted which could form the basis for future research, such as research centred on the effects of these metals on the embryonic development of aquaculture organisms and the alterations the metals caused in their stages of development.
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Affiliation(s)
- Ebuka Chizitere Emenike
- Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria.
| | - Kingsley O Iwuozor
- Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria.
| | - Stella Ukamaka Anidiobi
- Department of Chemistry, University of Lagos, P. M. B. 1029, Lagos, Nigeria
- Federal College of Fisheries and Marine Technology, Lagos, Nigeria
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Dou X, Dai H, Skuza L, Wei S. Cadmium removal potential of hyperaccumulator Solanum nigrum L. under two planting modes in three years continuous phytoremediation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119493. [PMID: 35597484 DOI: 10.1016/j.envpol.2022.119493] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 05/02/2022] [Accepted: 05/14/2022] [Indexed: 05/22/2023]
Abstract
Solanum nigrum L. is a Cd hyperaccumulator, but the potential for continuous remediation, or different planting methods have not been fully characterized. The potential for continuous phytoremediation of Cd-contaminated farmland soil (2.08 mg kg-1 Cd) by 2 planting methods (flowering harvest twice a year and maturity harvest once a year) was studied in a 3-year pot experiment. The total Cd accumulation (ug plant-1) of the 3-year flowering stage treatments was 26.3% higher than that of the maturity stage treatments, which was mainly due to that flowering harvest twice a year caused 65.5% increase of shoot biomass. Similarly, the Cd decreased concentration in soil and Cd removal rate in the flowering stage treatments were 29.2% and 27.9% higher than that in the maturity stage treatments, respectively. After 3 years of phytoremediation, the extractable Cd concentration in soil was reduced by 36.4% in the flowering stage treatments and by 27.6% in the maturity stage treatments, which also led to the same decreasing trend of Cd accumulation of S. nigrum. In conclusion, the study results have demonstrated that the planting mode of two harvests a year at the flowering stage seems to be a viable option to apply for continuous phytoremediation of Cd-contaminated farmland soil.
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Affiliation(s)
- Xuekai Dou
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Huiping Dai
- College of Biological Science & Engineering, Shaanxi Province Key Laboratory of Bio-resources, Qinling-Bashan Mountains Bioresources Comprehensive Development C.I.C, State Key Laboratory of Biological Resources and Ecological Environment Jointly Built By Qinba Province and Ministry, Shaanxi University of Technology, Hanzhong, 723001, China.
| | - Lidia Skuza
- Institute of Biology, The Centre for Molecular Biology and Biotechnology, University of Szczecin, Szczecin, 71-415, Poland
| | - Shuhe Wei
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
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Electric Field-Enhanced Cadmium Accumulation and Photosynthesis in a Woody Ornamental Hyperaccumulator—Lonicera japonica Thunb. PLANTS 2022; 11:plants11081040. [PMID: 35448768 PMCID: PMC9030930 DOI: 10.3390/plants11081040] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/08/2022] [Accepted: 04/08/2022] [Indexed: 11/17/2022]
Abstract
The multi-system of electro-phytotechnology using a woody ornamental cadmium (Cd) hyperaccumulator (Lonicera japonica Thunb.) is a new departure for environmental remediation. The effects of four electric field conditions on Cd accumulation, growth, and photosynthesis of L. japonica under four Cd treatments were investigated. Under 25 and 50 mg L−1 Cd treatments, Cd accumulation in L. japonica was enhanced significantly compared to the control and reached 1110.79 mg kg−1 in root and 428.67 mg kg−1 in shoots influenced by the electric field, especially at 2 V cm−1, and with higher bioaccumulation coefficient (BC), translocation factor (TF), removal efficiency (RE), and the maximum Cd uptake, indicating that 2 V cm−1 voltage may be the most suitable electric field for consolidating Cd-hyperaccumulator ability. It is accompanied by increased root and shoots biomass and photosynthetic parameters through the electric field effect. These results show that a suitable electric field may improve the growth, hyperaccumulation, and photosynthetic ability of L.japonica. Meanwhile, low Cd supply (5 mg L−1) and medium voltage (2 V cm−1) improved plant growth and photosynthetic capacity, conducive to the practical application to a plant facing low concentration Cd contamination in the real environment.
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Mohammadi S, Keshavarzi B, Moore F, Afzali SF, Sorooshian A. Macronutrients, trace metals and health risk assessment in agricultural soil and edible plants of Mahshahr City, Iran. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:131. [PMID: 35089440 DOI: 10.1007/s10661-021-09646-2] [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: 12/13/2020] [Accepted: 11/20/2021] [Indexed: 06/14/2023]
Abstract
In this study, we evaluate the geochemistry of macro- (Fe, P, Ca, S, K, Na, Mg) and micronutrients (Mo, Cu, Pb, Zn, Co, Mn, Cd, Sr, Cr, Hg, Se), along with possible health risks of heavy metals contamination in agricultural soils and vegetables of the Mahshahr industrial port in Iran. Calculation of geochemical coefficients revealed the low pollution load of Mahshahr agricultural soils. Most of the investigated elements exhibited lower concentrations in soil than international standards. Element concentrations in plant samples were far below the permissible values set by environmental agencies. Based on permissible values, there was deficiency of several soil elements, including Cu, in vegetables because they are mostly present in the soil residual phase. An exception was Mn, which is the most mobile element in soil. The transfer factor (TF) of elements showed the following trend: K > Na > P > S > Mo > Hg > Se > Zn > Cd > Cu > Mg > Mn > Ca > Cr > Co ≈ Fe = Pb. There was high transfer of major elements from soil to plants, and lower values for micronutrients and heavy metals. The calculated daily intake (DIM) and health risk index (HRI) for ten plant species for adults were < 1, while the HRI was larger than 1 for Mn via radish consumption. According to geochemical investigations and statistical tests such as principal component analysis, Kruskal-Wallis, and correlation coefficient calculations, plant species play the most important role in elemental uptake by plants.
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Affiliation(s)
- Shabnam Mohammadi
- Department of Earth Sciences, College of Sciences, Shiraz University, Shiraz, 71454, Iran
| | - Behnam Keshavarzi
- Department of Earth Sciences, College of Sciences, Shiraz University, Shiraz, 71454, Iran.
| | - Farid Moore
- Department of Earth Sciences, College of Sciences, Shiraz University, Shiraz, 71454, Iran
| | - Seyed Fakhreddin Afzali
- Department of Natural Resource and Environmental Engineering, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Armin Sorooshian
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, 85721, USA
- Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, 85721, USA
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Debela AS, Dawit M, Tekere M, Itanna F. Phytoremediation of soils contaminated by lead and cadmium in Ethiopia, using Endod ( Phytolacca dodecandra L). INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 24:1339-1349. [PMID: 35060415 DOI: 10.1080/15226514.2021.2025336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Phytoremediation is a cost effective and environmentally sustainable green technology for remediation of metal contaminated sites. In Addis Ababa, the capital of Ethiopia, large vegetable farms are grown on contaminated sites. This study evaluates the potential of Phytolacca dodecandra L to remediate Pb and Cd from contaminated sites in Addis Ababa. Pb and Cd in soil samples and different plant parts were determined using AAS. Phytoremediation potential of P. dodecandra in different seasons was estimated by calculating the Bioconcentration factor (BCF) and translocation factor (TF). The average BCF recorded for plant shoot in dry season samples varied from 0.87 to 1.74 for Pb and 1.06 to 2.00 for Cd, while in wet season it was within the range of 1.1-1.53 for Pb and 0.93-3.89 for Cd. The TF values for P. dodecandra ranged from 0.84 to 3.49 for Pb and 1.81 to 4.11 for Cd in dry season, whereas for wet season it varied between 1.34 and 2.01 for Pb and 1.78 and 2.97 for Cd. Since the mean values of BCF and TF were >1, it was concluded that P. dodecandra has considerable potential for phytoextraction of Pb and Cd in contaminated sites.
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Affiliation(s)
- Alemu Shiferaw Debela
- Department of Environmental Management, Kotebe Metropolitan University, Addis Ababa, Ethiopia
| | - Mekibib Dawit
- Department of Environmental Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Pretoria, South Africa
| | - Memory Tekere
- Department of Environmental Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Pretoria, South Africa
| | - Fisseha Itanna
- Department of Soil Science and Resource Conservation, National University of Lesotho, Maseru, Lesotho
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22
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Phytoremediation of Cadmium Polluted Soils: Current Status and Approaches for Enhancing. SOIL SYSTEMS 2022. [DOI: 10.3390/soilsystems6010003] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cadmium (Cd) is a heavy metal present in atmosphere, rocks, sediments, and soils without a known role in plants. It is relatively mobile and can easily enter from soil into groundwater and contaminate the food chain. Its presence in food in excess amounts may cause severe conditions in humans, therefore prevention of cadmium entering the food chain and its removal from contaminated soils are important steps in preserving public health. In the last several years, several approaches for Cd remediation have been proposed, such as the use of soil amendments or biological systems for reduction of Cd contamination. One of the approaches is phytoremediation, which involves the use of plants for soil clean-up. In this review we summarized current data on the use of different plants in phytoremediation of Cd as well as information about different approaches which have been used to enhance phytoremediation. This includes data on the increasing metal bioavailability in the soil, plant biomass, and plant accumulation capacity as well as seed priming as a promising novel approach for phytoremediation enhancing.
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Thakur M, Praveen S, Divte PR, Mitra R, Kumar M, Gupta CK, Kalidindi U, Bansal R, Roy S, Anand A, Singh B. Metal tolerance in plants: Molecular and physicochemical interface determines the "not so heavy effect" of heavy metals. CHEMOSPHERE 2022; 287:131957. [PMID: 34450367 DOI: 10.1016/j.chemosphere.2021.131957] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 05/27/2023]
Abstract
An increase in technological interventions and ruthless urbanization in the name of development has deteriorated our environment over time and caused the buildup of heavy metals (HMs) in the soil and water resources. These heavy metals are gaining increased access into our food chain through the plant and/or animal-based products, to adversely impact human health. The issue of how to restrict the entry of HMs or modulate their response in event of their ingress into the plant system is worrisome. The current knowledge on the interactive-regulatory role and contribution of different physical, biophysical, biochemical, physiological, and molecular factors that determine the heavy metal availability-uptake-partitioning dynamics in the soil-plant-environment needs to be updated. The present review critically analyses the interactive overlaps between different adaptation and tolerance strategies that may be causally related to their cellular localization, conjugation and homeostasis, a relative affinity for the transporters, rhizosphere modifications, activation of efflux pumps and vacuolar sequestration that singly or collectively determine a plant's response to HM stress. Recently postulated role of gaseous pollutants such as SO2 and other secondary metabolites in heavy metal tolerance, which may be regulated at the whole plant and/or tissue/cell is discussed to delineate and work towards a "not so heavy" response of plants to heavy metals present in the contaminated soils.
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Affiliation(s)
- Meenakshi Thakur
- College of Horticulture and Forestry (Dr. Y.S. Parmar University of Horticulture and Forestry), Neri, Hamirpur, 177 001, Himachal Pradesh, India
| | - Shamima Praveen
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Pandurang R Divte
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Raktim Mitra
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Mahesh Kumar
- ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413 115, India
| | - Chandan Kumar Gupta
- Division of Plant Physiology and Biochemistry, ICAR-Indian Institute of Sugarcane Research, Lucknow, 226 002, India
| | - Usha Kalidindi
- Centre for Environment Science and Climate Resilient Agriculture, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Ruchi Bansal
- Division of Germplasm Evaluation, ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110 012, India
| | - Suman Roy
- ICAR-Central Research Institute for Jute and Allied Fibres, Barrackpore, Kolkata, 700 120, India
| | - Anjali Anand
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India.
| | - Bhupinder Singh
- Centre for Environment Science and Climate Resilient Agriculture, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India.
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24
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Peng C, Zhou J, Sun Y, Yin H, Chen Y, Yao L, Qi K, Huo Q, Xie F. Study on the speciation of arsenic in the genuine medicinal material honeysuckle. OPEN CHEM 2021. [DOI: 10.1515/chem-2021-0120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Arsenic (As) accumulated in genuine medicinal materials will not only deteriorate the original medicinal properties of the medicinal materials but also harm the eater’s body. In this study, inductively coupled plasma mass spectrometry (ICP-MS) technology was used to investigate the total As content of honeysuckle in four regions, namely Fengqiu, Henan, Xinmi, Shandong, and Julu, Hebei, as well as the speciation and content of As in the roots, stems, and leaves of honeysuckle. This research shows that the total As content of honeysuckle in the four regions was 0.25–0.3 mg/kg. At 1.5 mol/L H3PO4, 200 W, we performed ultrasonic extraction for 30 min at 60°C and adopted high performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP-MS) to analyze the As speciation of honeysuckle plants. The soil As speciation mainly exists in the form of As(v). In the medicinal part of honeysuckle, the amount of different As speciation is ranked in the descending order as As(v) > As(iii) > dimethyl As acid > monomethyl As acid > AsC. As(v) is the main speciation, accounting for 64.5% of the total, followed by the most toxic As(iii), which is 18.8%. As(v) absorbed by the root system of honeysuckle from the soil tends to transform to As(iii) when transported upwards, and the transformation process mainly occurs in the roots.
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Affiliation(s)
- Congnan Peng
- Department of Biomedicine, Biochemical Engineering College of Beijing Union University , 100023 Beijing , China
| | - Juntong Zhou
- Department of Biomedicine, Biochemical Engineering College of Beijing Union University , 100023 Beijing , China
| | - Yaxuan Sun
- Department of Biomedicine, Biochemical Engineering College of Beijing Union University , 100023 Beijing , China
| | - Hang Yin
- Department of Biomedicine, Biochemical Engineering College of Beijing Union University , 100023 Beijing , China
| | - Yuxin Chen
- Department of Biomedicine, Biochemical Engineering College of Beijing Union University , 100023 Beijing , China
| | - Li Yao
- Department of Biomedicine, Biochemical Engineering College of Beijing Union University , 100023 Beijing , China
| | - Kailin Qi
- Department of Biomedicine, Biochemical Engineering College of Beijing Union University , 100023 Beijing , China
| | - Qing Huo
- Department of Biomedicine, Biochemical Engineering College of Beijing Union University , 100023 Beijing , China
| | - Fei Xie
- Department of Biomedicine, Biochemical Engineering College of Beijing Union University , 100023 Beijing , China
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Kaushal J, Mahajan P, Kaur N. A review on application of phytoremediation technique for eradication of synthetic dyes by using ornamental plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:67970-67989. [PMID: 34636019 DOI: 10.1007/s11356-021-16672-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 09/18/2021] [Indexed: 06/13/2023]
Abstract
Phytoremediation emerges as an innovative and eco-friendly technique to remediate textile dyes with the use of various categories of plants. In recent years, ornamental plants emerge as more attractive and effective substitute in comparison to edible plants for phytoremediation. Regardless of aesthetic value, some ornamental plants can be grown to remediate the sites contaminated with dyes, heavy metals, pesticides, or other organic compounds. In this review, we focus on pioneer research on synthetic dye removal using ornamental plants and evaluate the phytoremediation capability of ornamental plants for treatment of textile effluent. This paper also emphasized specific ornamental plants having high accumulation and tolerance ability for removal of dyes. The mechanisms explored for the phytoremediation of dyes by ornamental plants have also been explained. This review will also be helpful for researchers for exploring more new ornamental plants in phytoremediation technique.
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Affiliation(s)
- Jyotsna Kaushal
- Centre for Water Sciences, Chitkara University Institute of Engineering and Technology, Chitkara University, Rajpura, Punjab, 140401, India
| | - Pooja Mahajan
- Centre for Water Sciences, Chitkara University Institute of Engineering and Technology, Chitkara University, Rajpura, Punjab, 140401, India.
| | - Navjeet Kaur
- Centre for Water Sciences, Chitkara University Institute of Engineering and Technology, Chitkara University, Rajpura, Punjab, 140401, India
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Skiba E, Pietrzak M, Glińska S, Wolf WM. The Combined Effect of ZnO and CeO 2 Nanoparticles on Pisum sativum L.: A Photosynthesis and Nutrients Uptake Study. Cells 2021; 10:3105. [PMID: 34831328 PMCID: PMC8624121 DOI: 10.3390/cells10113105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 11/03/2021] [Accepted: 11/05/2021] [Indexed: 01/08/2023] Open
Abstract
Cerium oxide nanoparticles (CeO2 NPs) and zinc oxide nanoparticles (ZnO NPs) are emerging pollutants that are likely to occur in the contemporary environment. So far, their combined effects on terrestrial plants have not been thoroughly investigated. Obviously, this subject is a challenge for modern ecotoxicology. In this study, Pisum sativum L. plants were exposed to either CeO2 NPs or ZnO NPs alone, or mixtures of these nano-oxides (at two concentrations: 100 and 200 mg/L). The plants were cultivated in hydroponic system for twelve days. The combined effect of NPs was proved by 1D ANOVA augmented by Tukey's post hoc test at p = 0.95. It affected all major plant growth and photosynthesis parameters. Additionally, HR-CS AAS and ICP-OES were used to determine concentrations of Cu, Mn, Fe, Mg, Ca, K, Zn, and Ce in roots and shoots. Treatment of the pea plants with the NPs, either alone or in combination affected the homeostasis of these metals in the plants. CeO2 NPs stimulated the photosynthesis rate, while ZnO NPs prompted stomatal and biochemical limitations. In the mixed ZnO and CeO2 treatments, the latter effects were decreased by CeO2 NPs. These results indicate that free radicals scavenging properties of CeO2 NPs mitigate the toxicity symptoms induced in the plants by ZnO NPs.
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Affiliation(s)
- Elżbieta Skiba
- Institute of General and Ecological Chemistry, Lodz University of Technology, 90-924 Lodz, Poland; (M.P.); (W.M.W.)
| | - Monika Pietrzak
- Institute of General and Ecological Chemistry, Lodz University of Technology, 90-924 Lodz, Poland; (M.P.); (W.M.W.)
| | - Sława Glińska
- Laboratory of Microscopic Imaging and Specialized Biological Techniques, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland;
| | - Wojciech M. Wolf
- Institute of General and Ecological Chemistry, Lodz University of Technology, 90-924 Lodz, Poland; (M.P.); (W.M.W.)
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Zeng P, Guo Z, Xiao X, Zhou H, Gu J, Liao B. Tolerance capacities of Broussonetia papyrifera to heavy metal(loid)s and its phytoremediation potential of the contaminated soil. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:580-589. [PMID: 34369831 DOI: 10.1080/15226514.2021.1958746] [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] [Indexed: 06/13/2023]
Abstract
Broussonetia papyrifera, is a promising fast-growing woody plant for the phytoremediation of heavy metal(loid) (HM)-contaminated soil. In this study, a greenhouse experiment was conducted to explore the tolerance capacities of B. papyrifera and its phytoremediation potential in the HM-contaminated soil. The results indicated that B. papyrifera could effectively decrease malondialdehyde (MDA) content by enhancing the antioxidant enzyme activities along with the cultivation in the HM-contaminated soil. Significant (p < 0.05) negative relationships were found between MDA content and superoxide dismutase (r = -0.620) and catalase activities (r = -0.702) in B. papyrifera leaves. Fourier Transform Infrared Spectroscopy analysis indicated that the main functional groups in B. papyrifera roots were slightly influenced by HMs, and organic acids, carbohydrates, protein, and amino acids might bind with HMs in plant roots to alleviate the adverse effect of HMs on plants growth. Meanwhile, B. papyrifera had great potential used for the phytoextraction of Cd and Zn in HM-contaminated soil. The maximum total Cd and Zn accumulation amount in B. papyrifera shoots could attach to 2.26 and 66.8 mg·pot-1, respectively. These observations suggested that B. papyrifera has large biomass and high tolerance to HMs, which can be regarded as a promising plant for the eco-remediation of HM-contaminated sites.Novelty statement In this study, a fast-growing woody plant, Broussonetia papyrifera, was used for heavy metal(loid) (HM)-contaminated soil remediation. We found that B. papyrifera can effectively alleviate the adverse effect of HMs on plant growth by enhancing the antioxidant enzyme activities in leaves and binding HMs with organic acids, carbohydrates, protein, and amino acids in roots. Furthermore, the maximum total Cd and Zn accumulation amount in B. papyrifera shoots could attach to 2.26 and 66.8 mg·pot-1, which suggested that B. papyrifera might be regarded as a promising woody plant used for the phytoextraction of Cd and Zn in the contaminated soil.
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Affiliation(s)
- Peng Zeng
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Zhaohui Guo
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Xiyuan Xiao
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Hang Zhou
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China
| | - Jiaofeng Gu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China
| | - Bohan Liao
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China
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Abstract
Abandoned mine lands (AMLs), which are considered some of the most dangerous anthropogenic activities in the world, are a source of hazards relating to potentially toxic elements (PTEs). Traditional reclamation techniques, which are expensive, time-consuming and not well accepted by the general public, cannot be used on a large scale. However, plant-based techniques have gained acceptance as an environmentally friendly alternative over the last 20 years. Plants can be used in AMLs for PTE phytoextraction, phytostabilization, and phytovolatilization. We reviewed these phytoremediation techniques, paying particular attention to the selection of appropriate plants in each case. In order to assess the suitability of plants for phytoremediation purposes, the accumulation capacity and tolerance mechanisms of PTEs was described. We also compiled a collection of interesting actual examples of AML phytoremediation. On-site studies have shown positive results in terms of soil quality improvement, reduced PTE bioavailability, and increased biodiversity. However, phytoremediation strategies need to better characterize potential plant candidates in order to improve PTE extraction and to reduce the negative impact on AMLs.
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Calabrese EJ, Agathokleous E. Accumulator plants and hormesis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 274:116526. [PMID: 33545523 DOI: 10.1016/j.envpol.2021.116526] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 05/17/2023]
Abstract
Accumulation of metals by plants is an important area of investigation in plant ecology and evolution as well as in soil contamination/phytoremediation practices. This paper reports that hormetic-biphasic dose-response relationships were commonly observed for multiple agents (i.e. arsenic, cadmium, chromium, fluoride, lead, and zinc) and 20 species in plant (hyper)accumulator studies. The hormetic stimulation was related to metal accumulation in affected tissues, with the metal stimulation concentration zone unique for each metal, species, tissue, and endpoint studied. However, quantitative features of the hormetic dose response were similar across all (hyper)accumulation studies, with results independent of plant species, endpoints measured, and metal. The dose-dependent stimulatory and inhibitory/toxic plant responses were often associated with the up- and down-regulation of adaptive mechanisms, especially those involving anti-oxidative enzymatic processes. These findings provide a mechanistic framework to account for both the qualitative and quantitative features of the hormetic dose response in plant (hyper)accumulator studies.
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Affiliation(s)
- Edward J Calabrese
- Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA, 01003, United States.
| | - Evgenios Agathokleous
- School of Applied Meteorology, Nanjing University of Information Science and Technology, Ningliu Rd 219, Nanjing, Jiangsu, 21044, China.
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Yang S, Zhang J, Chen L. Growth and physiological responses of Pennisetum sp. to cadmium stress under three different soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:14867-14881. [PMID: 33222062 DOI: 10.1007/s11356-020-11701-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 11/16/2020] [Indexed: 05/22/2023]
Abstract
Pennisetum sp. was employed as a model species to detect the growth and physiological response to cadmium (Cd) stress at different Cd concentrations (0, 20, 50, and 100 mg kg-1) in three types of soils (yellow brown soil, yellow soil, and red soil). Results showed that the growth of Pennisetum sp. was not significantly influenced by Cd in 20 mg kg-1, but significantly inhibited at higher Cd concentrations in three types of soils. Besides, the higher Cd concentrations, the lower root, stem, and leaf biomass. With Cd concentration of soil increasing, Cd content of root, stem, and leaf increased. Compared with no Cd, high Cd concentrations (50 and 100 mg kg-1) induced the physiological indices (photosynthetic rate, stomatal conductance, transpiration rate) and biochemical indices (nitrate reductase, glutamine synthetase, and glutamate synthase activities) decreasing, but the concentration of NO3- and NH4+ increasing. The activity of antioxidative enzymes (SOD, POD, and CAT) was disrupted and the content of malondialdehyde (MDA) increasing. Pennisetum sp. could protect cells from damage and maintain normal physiological metabolism via increasing the production of soluble sugar and soluble protein, but soluble proteins and soluble sugars were limited in high concentrations of Cd (50 and 100 mg kg-1). Moreover, the growth and physiological response to Cd are different in the three types of soils. The growth of Pennisetum sp. in yellow brown soil was better than that in other two soils, and the gas exchange rate, antioxidant enzyme activity, and nitrogen metabolism in yellow soil and red soil were more affected by Cd stress than that in yellow brown soil. Overall, Pennisetum sp. had certain tolerance and biosorption ability to Cd in different Cd concentrations and different types of soil. Hence, Pennisetum sp. was a suitable choice for Cd remediation, especially in yellow brown soil.
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Affiliation(s)
- Senlin Yang
- Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province & National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River & Rainy Area of West China Plantation Ecosystem Permanent Scientific Research Base, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jian Zhang
- Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province & National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River & Rainy Area of West China Plantation Ecosystem Permanent Scientific Research Base, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lianghua Chen
- Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province & National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River & Rainy Area of West China Plantation Ecosystem Permanent Scientific Research Base, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu, 611130, China.
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Yu B, Peng Y, Xu J, Qin D, Gao T, Zhu H, Zuo S, Song H, Dong J. Phytoremediation potential of Youngia japonica (L.) DC: a newly discovered cadmium hyperaccumulator. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:6044-6057. [PMID: 32989693 DOI: 10.1007/s11356-020-10853-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
Cadmium (Cd) is one of the most toxic contaminants, causing a lot of harm to environment and the human health. An outdoor pot experiment for 60 days was conducted to study the Cd(II) effects on growth, biomass, physiological properties, Cd uptake, and accumulation in Youngia japonica plants but also to evaluate the effect of Y. japonica growth on enzyme activity of Cd-contamination soils. Generally, the application of Cd(II) less than 120 mg kg-1 stimulated the growth of the plants, whereas at 160 mg kg-1 or higher levels, a significant reduction was observed. For all treatments > 10 mg kg-1 Cd(II) in soil, values of Cd in roots and aboveground parts were more than the critical value of 100 mg kg-1 and reached highest values of 252.51 and 314.29 mg kg-1, respectively. The bioconcentration factors (BCF) and translation factors (TF) for all Cd treatments were more than 1.0, with the former ranging from 1.03 to 5.46 and the later from 1.04 to 1.33. The activities of peroxidase (POD) and superoxide dismutase (SOD), as well as the levels of glutathione (GSH) and proline in Y. japonica plants after exposure to 10-200 mg kg-1 Cd(II) were stimulated, implying that they were defensive guards to the oxidative stress produced by Cd. The urease, dehydrogenase, and alkaline phosphatase activities under low Cd concentrations can be enhanced by planting Y. japonica species but inhibited under high Cd concentrations. Our data provide comprehensive evidence that Y. japonica has the typical properties of a Cd hyperaccumulator and thus may be practically employed to alleviate Cd from contaminated soils.
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Affiliation(s)
- Baohong Yu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Yajun Peng
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Jieru Xu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Dan Qin
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Tiancong Gao
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Haiyan Zhu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Shihao Zuo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Hongchuan Song
- School of Energy and Environment Science, Solar Energy Research Institute, Yunnan Normal University, Kunming, 650092, People's Republic of China
| | - Jinyan Dong
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China.
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Mayonde S, Cron GV, Glennon KL, Byrne MJ. Effects of cadmium toxicity on the physiology and growth of a halophytic plant, Tamarix usneoides (E. Mey. ex Bunge). INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 23:130-138. [PMID: 32755391 DOI: 10.1080/15226514.2020.1801573] [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] [Indexed: 05/22/2023]
Abstract
Heavy metal polluted soils can be remediated using plants, a process called phytoremediation. However, high concentrations of heavy metals can negatively affect plant physiology and growth. We experimentally evaluated the effects of cadmium (Cd) on the growth, (i.e. height, shoot and biomass) and physiology (i.e. leaf chlorophyll and relative water contents) of Tamarix usneoides. In a greenhouse experiment, T. usneoides clones were subjected to a once off treatment of 100 mmol/l NaCl with three different Cd concentrations (6, 12, and 18 mg/kg) applied 3 times/week for eight weeks. We predicted that plant health would decrease with an increase in Cd concentration. Results revealed a 35.9% reduction in chlorophyll content between the 18 mg/kg Cd treated plants and the control, suggesting that T. usneoides experienced a reduction in photosynthetic rate, which in turn influenced the growth and relative water content (RWC) of the plant. Although T. usneoides' growth and physiology were significantly decreased at 12 and 18 mg/kg Cd concentrations, the plants tolerated up to 6 mg/kg Cd concentration, a level found in most anthropogenic Cd-contaminated soils. Tamarix usneoides should thus be confirmed as a good phytoremediation candidate once its ability to extract, translocate and concentrate Cd has been determined.
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Affiliation(s)
- Samalesu Mayonde
- School of Animal Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Glynis V Cron
- School of Animal Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Kelsey L Glennon
- School of Animal Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Marcus J Byrne
- School of Animal Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
- DST-NRF Centre of Excellence for Invasion Biology, School of Animal Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Acclimatization of photosynthetic apparatus and antioxidant metabolism to excess soil cadmium in Buddleja spp. Sci Rep 2020; 10:21439. [PMID: 33293685 PMCID: PMC7722743 DOI: 10.1038/s41598-020-78593-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 11/26/2020] [Indexed: 11/10/2022] Open
Abstract
Heavy metal (HM) pollutants can cause serious phytotoxicity or oxidative stress in plants. Buddleja L., commonly known as “butterfly bushes”, are frequently found growing on HM-contaminated land. However, to date, few studies have focused on the physiological and biochemical responses of Buddleja species to HM stress. In this study, potted seedlings of B. asiatica Lour. and B. macrostachya Wall. ex Benth. were subjected to various cadmium (Cd) concentrations (0, 25, 50, 100, and 200 mg kg−1) for 90 days. Both studied Buddleja species showed restricted Cd translocation capacity. Exposure to Cd, non-significant differences (p > 0.05) were observed, including quantum yield of photosystem II (PSII), effective quantum yield of PSII, photochemical quenching and non-photochemical quenching in both species between all studied Cd concentrations. Moreover, levels of cellular reactive oxygen species (ROS) significantly declined (p < 0.05) with low malondialdehyde concentrations. In B. asiatica, high superoxide dismutase and significantly enhanced (p < 0.05) peroxidase (POD) activity contributed greatly to the detoxification of excess ROS, while markedly enhanced POD activity was observed in B. macrostachya. Additionally, B. macrostachya showed higher membership function values than did B. asiatica. These results suggested that both Buddleja species exhibited high Cd resistance and acclimatization.
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Eid EM, Galal TM, Shaltout KH, El-Sheikh MA, Asaeda T, Alatar AA, Alfarhan AH, Alharthi A, Alshehri AMA, Picó Y, Barcelo D. Biomonitoring potential of the native aquatic plant Typha domingensis by predicting trace metals accumulation in the Egyptian Lake Burullus. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 714:136603. [PMID: 31982738 DOI: 10.1016/j.scitotenv.2020.136603] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 12/27/2019] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
The ability of the native emergent macrophytes Typha domingensis for monitoring pollution with trace metals in Egyptian Lake Burullus was investigated through developing regression models for predicting their concentrations in the plant tissues. Plant samples (above-ground shoot and below-ground root and rhizome) as well as sediment samples were collected monthly during one growing season and analyzed. The association of trace metals concentration with several sediment characteristics (pH, organic matter, clay and silt) was also studied using the simple linear correlation coefficient (r). The concentration of some trace metals was significantly proportional to its values in the sediment such as Cd in the shoot, rhizome and root, Fe in the rhizome, and Ag in the root. There was positive relationship between the bioaccumulation factor (BAF) of Ag, Cd, Fe, Pb and Zn and sediment pH, organic matter and clay content. The developed regression models were significantly valid with high model efficiency and coefficient of determination, and low mean normalized average error. Trace metals were accumulated in the below-ground root and rhizome rather than in the shoot. Only Ag, Co and Ni provided bioaccumulation factor (BAF) < 1, while Ag was the only trace metal that could be transferred to some extend from the root to the rhizome and from there to the shoot [translocation factor (TF) 2.55 and 1.15, respectively]. Typha domingensis in Lake Burullus could be regarded as a bioindicator of trace metals pollution, and a good candidate as phytoremediator for Ag. The information on the phytoremediation capacity of T. domingensis certainly helps to solve contamination problems at Egyptian Lake Burullus region using this native plant.
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Affiliation(s)
- Ebrahem M Eid
- Biology Department, College of Science, King Khalid University, Abha 61321, P.O. Box 9004, Saudi Arabia; Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan; Botany Department, Faculty of Science, Kafr El-Sheikh University, Kafr El-Sheikh 33516, Egypt.
| | - Tarek M Galal
- Biology Department, Faculty of Science, Taif University, Taif, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Kamal H Shaltout
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Mohamed A El-Sheikh
- Botany & Microbiology Department, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia; Department of Botany, Faculty of Science, Damanhour University, Damanhour, Egypt
| | - Takashi Asaeda
- Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan; Hydro Technology Institute, Shiroyama Trust Tower 31F, 4-3-1 Toranomon, MInato-ku, Tokyo, Japan; Research and Development Center, Nippon Koei, 2304 Inarihara, Tsukuba, Ibaraki, Japan
| | - Abdulrahman A Alatar
- Botany & Microbiology Department, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia
| | - Ahmed H Alfarhan
- Botany & Microbiology Department, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia
| | - Awad Alharthi
- Botany & Microbiology Department, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia
| | - Ali M A Alshehri
- Biology Department, College of Science, King Khalid University, Abha 61321, P.O. Box 9004, Saudi Arabia
| | - Yolanda Picó
- Environmental and Food Safety Research Group of the University of Valencia (SAMA-UV), Desertification Research Centre CIDE (CSIC-UV-GV), Moncada-Naquera Road km 4.5, 46113 Moncada, Valencia, Spain
| | - Damia Barcelo
- Botany & Microbiology Department, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia; Water and Soil Research Group, Department of Environmental Chemistry, IDAEA-CSIC, JORDI GIRONA 18-26, 08034 Barcelona, Spain
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Comparative Study of Growth, Cadmium Accumulation and Tolerance of Three Chickpea ( Cicer arietinum L.) Cultivars. PLANTS 2020; 9:plants9030310. [PMID: 32121615 PMCID: PMC7154813 DOI: 10.3390/plants9030310] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/23/2020] [Accepted: 01/25/2020] [Indexed: 11/17/2022]
Abstract
Trace metals (TM) contamination is a severe problem in the environment and produced an adverse effect on the productivity of crops. Cadmium (Cd) is a TM ranked seven among the top 20 pollutants due to its high toxicity and solubility in water, taken up by the plants and affects their growth and metabolism. In this study, we evaluated the growth, Cd accumulation and tolerance capacities of three chickpea (Cicer arietinum L.) cultivars (NC234 (NC2), ICCV89310 (IC8) and ICCV89323-B (IC8-B)), subjected to two Cd concentrations (25 and 50 µM) in hydroponic culture. The toxicity of Cd reduced the plant height and fresh and dry biomass in all cultivars. The maximum reduction was observed at 50 µM of Cd. Compared with IC8-B, cultivars IC8 and NC2 exhibited better performance with high growth, biomass, root to shoot (R/S) ratio and water content under high Cd stress. To measure the accumulation of Cd in root and shoot, an inductively coupled plasma optical emission spectrometer (ICP-OES) was used. IC8 and NC2 had comparatively high Cd tolerance and accumulation ability (> 100 µg g-1 dry weight), with IC8 being more tolerant and accumulated higher Cd in shoot than NC2, while cultivar IC8-B was sensitive. Root accumulated more Cd than shoot in a dose-dependent manner. The bioconcentration factors (BCF) and bioaccumulation coefficients (BAC) were far higher than one (> 1) and increased with an increase in Cd concentrations, while the translocation factor (TF) was less than one (< 1), suggesting that all the three cultivars were unable to transfer Cd from the root to the shoot efficiently. Our results indicated that IC8 and NC2 proved to be resistant, while IC8-B showed sensitivity when exposed to high Cd stress (50 µM).
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El Mamoun I, Mouna F, Mohammed A, Najib B, Zine‐El Abidine T, Abdelkarim G, Didier B, Laurent L, Abdelaziz S. Zinc, lead, and cadmium tolerance and accumulation in
Cistus libanotis, Cistus albidus
, and
Cistus salviifolius
: Perspectives on phytoremediation. ACTA ACUST UNITED AC 2020. [DOI: 10.1002/rem.21638] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ibtihaj El Mamoun
- Equipe de physiologie et biotechnologie Végétales, Faculté des Sciences, Centre de biotechnologie végétale et microbienne biodiversité et environnementUniversité Mohammed V de RabatRabat Morocco
| | - Fahr Mouna
- Equipe de physiologie et biotechnologie Végétales, Faculté des Sciences, Centre de biotechnologie végétale et microbienne biodiversité et environnementUniversité Mohammed V de RabatRabat Morocco
| | | | - Bendaou Najib
- Equipe de physiologie et biotechnologie Végétales, Faculté des Sciences, Centre de biotechnologie végétale et microbienne biodiversité et environnementUniversité Mohammed V de RabatRabat Morocco
| | - Triqui Zine‐El Abidine
- Equipe de physiologie et biotechnologie Végétales, Faculté des Sciences, Centre de biotechnologie végétale et microbienne biodiversité et environnementUniversité Mohammed V de RabatRabat Morocco
| | - Guedira Abdelkarim
- Equipe de physiologie et biotechnologie Végétales, Faculté des Sciences, Centre de biotechnologie végétale et microbienne biodiversité et environnementUniversité Mohammed V de RabatRabat Morocco
| | - Bogusz Didier
- Équipe RhizogenèseInstitut de Recherche pour le Développement (IRD), UMR DIADE (IRD/UM2)Montpellier France
| | - Laplaze Laurent
- Équipe RhizogenèseInstitut de Recherche pour le Développement (IRD), UMR DIADE (IRD/UM2)Montpellier France
- Laboratoire mixte international Adaptation des Plantes et microorganismes associés aux Stress Environnementaux (LAPSE), Laboratoire Commun de Microbiologie IRD/ISRA/UCADCentre de Recherche de Bel AirDakar Senegal
| | - Smouni Abdelaziz
- Equipe de physiologie et biotechnologie Végétales, Faculté des Sciences, Centre de biotechnologie végétale et microbienne biodiversité et environnementUniversité Mohammed V de RabatRabat Morocco
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Eid EM, Galal TM, El-Bebany AF. Prediction models for monitoring heavy-metal accumulation by wheat ( Triticum aestivum L.) plants grown in sewage sludge amended soil. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 22:1000-1008. [PMID: 32062980 DOI: 10.1080/15226514.2020.1725866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Prediction of heavy-metal concentration in the edible parts of economic crops, based on their concentration in soil and other environmental factors, is urgently required for human risk assessment. The present investigation aimed to develop regression models for predicting heavy-metal concentration in wheat plants via their contents in sewage sludge amended soil, organic matter (OM) content and soil pH. The concentration of heavy metals in the plant tissues reflected its concentration in the soil with high Fe followed by Al, Mn, Cr, Zn, Ni, Co, Cu, and Pb. Soil OM content had a significant positive correlation with all investigated heavy-metal concentrations in the different tissues of wheat plants, while soil pH was negatively significant with most heavy metals except spike Pb and grain Cr. The bio-concentration factor of Al, Cu, and Zn from soil to wheat root was >1, while that of shoot, spikes, and grains was <1 for all heavy metals. Significantly valid regression models were developed with fluctuated coefficient of determination (R2), high model efficiency (ME) values and low mean normalized average error (MNAE). The significant positive correlations between the concentration of some heavy metals in the soil and the same in wheat tissues indicate the potential of this plant as a biomonitor for these metals in contaminated soils. The significant correlations between heavy-metal concentrations in soil and its properties (pH and OM) with metal concentrations in wheat plants support the prediction model as an appropriate option. This study recommends the use of models with R2 greater than 50% and recommend other researchers to use our models according to their own specific conditions.
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Affiliation(s)
- Ebrahem M Eid
- Department of Biology, College of Science, King Khalid University, Abha, Saudi Arabia
- Department of Botany, Faculty of Science, Kafr El-Sheikh University, Kafr El-Sheikh, Egypt
| | - Tarek M Galal
- Department of Botany and Microbiology, Faculty of Science, Helwan University, Cairo, Egypt
- Department of Biology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Ahmed F El-Bebany
- Department of Plant Pathology, Faculty of Agriculture, Alexandria University, Alexandria, Egypt
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Carvalho MEA, Castro PRC, Azevedo RA. Hormesis in plants under Cd exposure: From toxic to beneficial element? JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121434. [PMID: 31812481 DOI: 10.1016/j.jhazmat.2019.121434] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/24/2019] [Accepted: 10/07/2019] [Indexed: 05/17/2023]
Abstract
Tolerance level to cadmium (Cd) toxicity is generally associated with reductions of the internal Cd accumulation in living organisms. In plants, Cd exposure frequently triggers negative effects on their growth and productivity. However, an increased number of studies has reported the improved performance of some plant species (or their accessions/genotypes/varieties/cultivars/clones) to Cd exposure, despite Cd accumulation in their roots and shoots. These results indicate that plants have developed protective strategies to neutralize the side-effects from Cd toxicity or, more controversially, mechanisms that employ Cd as beneficial element. Here, we gathered information about Cd-induced hormetic effects on plants, and explored the potential mechanisms that allow them to have a better performance under Cd exposure. The promotion of plant development depends on both direct and indirect Cd-induced alterations in the metabolism of plants and their surround environment. In addition, the mechanisms behind the positive Cd-induced transgenerational effects were also discussed in the present paper.
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Affiliation(s)
- Marcia E A Carvalho
- Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz"/Universidade de São Paulo (ESALQ/USP), Avenida Pádua Dias, 11, Piracicaba, SP, 13418-900, Brazil
| | - Paulo R C Castro
- Departamento de Ciências Biológicas, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo (Esalq/USP), Avenida Pádua Dias, 11, Piracicaba, SP, 13418-900, Brazil
| | - Ricardo A Azevedo
- Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz"/Universidade de São Paulo (ESALQ/USP), Avenida Pádua Dias, 11, Piracicaba, SP, 13418-900, Brazil.
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Huang Y, Zu L, Zhang M, Yang T, Zhou M, Shi C, Shi F, Zhang W. Tolerance and distribution of cadmium in an ornamental species Althaea rosea Cavan. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 22:713-724. [PMID: 31885282 DOI: 10.1080/15226514.2019.1707771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The ornamental plants of Althaea rosea Cavan. were exposed to cadmium (Cd) at concentrations of 0, 5, 10, 50 and 100 mg·kg-1 to evaluate the potential of accumulation capacity and tolerance ability. The results showed that A. rosea was a Cd tolerance plant, and Cd accumulation was 4.57 mg·kg-1 in shoot and 9.43 mg·kg-1 in root at 100 mg·kg-1 Cd concentration. The high tolerance ability could be explained by the distribution characteristics and the defense mechanism. The accumulated Cd was allocated in root, older leaves, and subcellular level of the cell wall and supernatant soluble fraction to protect the physiological leaves from damage. The defense systems included the enzyme systems of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX) that could effectively eliminate the excessive ROS, and the non-enzymes system of total soluble proteins and non-protein thiols (NP-SH) that played an important role in detoxification. Thus, A. rosea could be used as a potential species for phytoremediation in Cd contaminated areas and beautify the environment.
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Affiliation(s)
- Yaping Huang
- College of Life Science, Nankai University, Tianjin, China
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lihong Zu
- College of Life Science, Nankai University, Tianjin, China
| | - Mei Zhang
- College of Life Science, Nankai University, Tianjin, China
| | - Tong Yang
- College of Life Science, Nankai University, Tianjin, China
| | - Meili Zhou
- College of Life Science, Nankai University, Tianjin, China
| | - Cong Shi
- School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen, China
| | - Fuchen Shi
- College of Life Science, Nankai University, Tianjin, China
| | - Wenju Zhang
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
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Taghipour M, Jalali M. Impact of some industrial solid wastes on the growth and heavy metal uptake of cucumber (Cucumis sativus L.) under salinity stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 182:109347. [PMID: 31254854 DOI: 10.1016/j.ecoenv.2019.06.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 04/24/2019] [Accepted: 06/11/2019] [Indexed: 06/09/2023]
Abstract
This study was conducted to investigate the effect of industrial solid wastes (ISWs) and salinity on growth and heavy metals uptake by cucumber (Cucumis sativus L.). The soil was treated with 5% and 10% of the ceramic factory (CFW), stone cutting (SCW) and sugar factory (SFW) wastes. Plant of cucumber was grown under greenhouse conditions in control and ISWs treated soils and stressed with electrical conductivities of 0, 4 and 8 dS m-1. Plants were harvested after 2 months and separated into root, shoot, and fruit. Then, dry weights and heavy metals contents in each fraction of plants were determined. The addition of all ISWs in soil increased total heavy metals content in the soil. In all treatments, growth parameters of cucumber decreased when irrigated with saline waters. As compared to control soil, the addition of CFW and SCW to soil decreased plant dry weight, while, it was improved with the addition of the SFW. The result of plant analysis showed that there was an increase in the contents of heavy metals (except Cr) in all parts of cucumber with the addition of ISWs. Salinity decreased the content of Zn uptake and increased another heavy metal uptake by all parts of the plants. The application of ISWs and salinity did not show a significant effect on bioconcentration (BCF) and transfer factor (TF) of heavy metals in plants. The health risk index (HRI) values of all heavy metals for both adults and children were found to be less than 1, so, the health risk of heavy metal for people who consume cucumber grown in these industrial areas was generally assumed to be safe.
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Affiliation(s)
- Marzieh Taghipour
- Department of Soil Science, College of Agriculture, Bu-Ali Sina University, Hamedan, Iran.
| | - Mohsen Jalali
- Department of Soil Science, College of Agriculture, Bu-Ali Sina University, Hamedan, Iran
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Babadi M, Zalaghi R, Taghavi M. A non-toxic polymer enhances sorghum-mycorrhiza symbiosis for bioremediation of Cd. MYCORRHIZA 2019; 29:375-387. [PMID: 31227910 DOI: 10.1007/s00572-019-00902-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/29/2019] [Indexed: 05/08/2023]
Abstract
In this study, the effect of a mycorrhizal symbiosis on the translocation of Cd from Cd-polluted soil to sorghum roots was investigated using rhizoboxes. A factorial experiment (two factors including fungus inoculation and Cd contamination) in a completely randomized design with three replicates was performed. In the rhizobox rhizosphere compartment, plants were cultivated in uncontaminated soil and mycorrhizal inoculation (inoculated with Claroideoglomus etunicatum or non-inoculated) was performed, and in the other compartment, the soil was contaminated with Cadmium (Cd) at one of three levels (0, 100 mg kg-1 using a non-toxic organic polymer (poly (N-vinyl succinate))-Cd, or 100 mg kg-1 using Cd-nitrate). Cd pollution resulted in a significant decrease in shoot dry weight (from 7.52 to 6.18 and 6.68 g pot-1, from control to polymer-Cd and nitrate-Cd respectively), root mycorrhizal colonization (from 32.33% to 8.16% and 8.33%), shoot phosphorus concentration (from 3.14 to 2.80 and 2.76 g kg-1), and soil carbohydrate (from 12.05 to 10.74 and 10.24 mg g-1), and also resulted in significant increases in soil glomalin (from 595.55 to 660.52 and 690.39 μg g-1). The use of mycorrhizal fungi increased the glomalin content of the soil and improved the studied parameters. The results revealed the key role of Claroideoglomus etunicatum in translocation of Cd in the rhizobox and also in precise control of Cd concentration of plant tissues (increase or decrease of them depending on Cd composition and Cd availability). Poly(N-vinyl succinate) increased Cd availability and Cd concentration of shoot tissue (5.19 mg kg-1) compared to nitrate-Cd (3.68 mg kg-1) and could be recommended for improving phytoremediation.
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Affiliation(s)
- Milad Babadi
- Department of Soil Science, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Roya Zalaghi
- Department of Soil Science, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Mehdi Taghavi
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Zhang X, Zhang F, Wang J, Lin L, Liao M, Tang Y, Sun G, Wang X, Lv X, Deng Q, Chen C, Ren W. Cutting after grafting affects the growth and cadmium accumulation of Nasturtium officinale. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:15436-15442. [PMID: 30937751 DOI: 10.1007/s11356-019-04977-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 03/25/2019] [Indexed: 06/09/2023]
Abstract
The growth and cadmium (Cd) accumulation of emergent plant Nasturtium officinale R. Br. cuttings taken from plants grafted onto rootstocks of four terrestrial Cruciferae species were studied in a pot experiment. Scions from N. officinale seedlings were grafted onto rootstocks of Brassica chinensis L., Raphanus sativus L., Brassica napus L., and Rorippa dubia (Pers.) H. Hara. Cuttings were taken after 1 month and grown in Cd-contaminated soil (10 mg Cd kg-1) for 60 days. Compared with non-grafted N. officinale, grafting onto R. sativus and B. napus rootstocks increased the root, shoot, and whole plant biomasses of N. officinale cuttings. Brassica napus rootstock was more effective than R. sativus rootstock for increasing the biomass of N. officinale cuttings. The four rootstocks decreased or had no significant effect on photosynthetic pigment contents in N. officinale cuttings compared with non-grafted N. officinale. Only grafting onto B. napus rootstock enhanced antioxidant enzyme activities. Compared with non-grafted N. officinale, R. sativus and B. napus rootstocks decreased the Cd contents in roots and shoots of N. officinale cuttings, whereas the other rootstocks had no significant effect on the shoot Cd content. The four rootstocks had no increase effects on Cd extraction by N. officinale cuttings. Therefore, cutting after grafting did not enhance the phytoremediation ability of N. officinale for growth in Cd-contaminated soil. However, R. sativus and B. napus rootstocks decreased the Cd content in N. officinale cuttings, which offers a potential approach for N. officinale safety production as a wild vegetable in Cd-contaminated soils.
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Affiliation(s)
- Xingyu Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Fenqin Zhang
- College of Agriculture and Biological Technology, Hexi University, Zhangye, Gansu, China
| | - Jin Wang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Lijin Lin
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China.
| | - Ming'an Liao
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yi Tang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Guochao Sun
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xun Wang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiulan Lv
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Qunxian Deng
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Cheng Chen
- College of Economics, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Wei Ren
- Maize Research Institute, Neijiang Academy of Agricultural Sciences, Neijiang, Sichuan, China
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Regression models for monitoring trace metal accumulations by Faba sativa Bernh. plants grown in soils amended with different rates of sewage sludge. Sci Rep 2019; 9:5443. [PMID: 30931965 PMCID: PMC6443791 DOI: 10.1038/s41598-019-41807-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 03/18/2019] [Indexed: 02/07/2023] Open
Abstract
The present study was conducted using a pot experiment to develop regression models for the prediction of trace metal concentrations in faba bean (Faba sativa Bernh.) plants cultivated in soils amended with different rates of sewage sludge to monitor possible human health risks. The trace metal concentrations in the different tissues of faba bean showed that most of the investigated trace metals were accumulated in the plant roots rather than in the other tissues. Meanwhile, the fruits accumulated the lowest concentration of most trace metals. The trace metal concentrations of the faba bean plants had a significant positive correlation with the organic matter content and a significant negative correlation with the soil pH. Transfer of trace metals from the soil to faba bean roots indicated that Al, Cu, Pb and Zn had a transfer factor that exceeded one, whereas the TF of the investigated trace metals from the roots to the fruits did not exceed one. The daily intake rate of the investigated trace metals did not exceed one in both adults and children. On the other side, the hazard quotient of trace metals from consuming faba bean fruits had values <1 for most investigated trace metals except Al and Mn in adults and in children. It is worth mentioning that the predicted trace metal concentrations via the established regression models and measured values from the validation data set were not significantly different (P > 0.05). Therefore, these developed models will be useful for prediction of trace metals uptake by faba bean grown in soil amended with sewage sludge so possible human risks can be identified.
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Asgari Lajayer B, Khadem Moghadam N, Maghsoodi MR, Ghorbanpour M, Kariman K. Phytoextraction of heavy metals from contaminated soil, water and atmosphere using ornamental plants: mechanisms and efficiency improvement strategies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:8468-8484. [PMID: 30712209 DOI: 10.1007/s11356-019-04241-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 01/14/2019] [Indexed: 05/22/2023]
Abstract
Accumulation of heavy metals (HMs) in soil, water and air is one of the major environmental concerns worldwide, which mainly occurs due to anthropogenic activities such as industrialization, urbanization, and mining. Conventional remediation strategies involving physical or chemical techniques are not cost-effective and/or eco-friendly, reinforcing the necessity for development of novel approaches. Phytoextraction has attracted considerable attention over the past decades and generally refers to use of plants for cleaning up environmental pollutants such as HMs. Compared to other plant types such as edible crops and medicinal plants, ornamental plants (OPs) seem to be a more viable option as they offer several advantages including cleaning up the HMs pollution, beautification of the environment, by-product generation and related economic benefits, and not generally being involved in the food/feed chain or other direct human applications. Phytoextraction ability of OPs involve diverse detoxification pathways such as enzymatic and non-enzymatic (secondary metabolites) antioxidative responses, distribution and deposition of HMs in the cell walls, vacuoles and metabolically inactive tissues, and chelation of HMs by a ligand such as phytochelatins followed by the sequestration of the metal-ligand complex into the vacuoles. The phytoextraction efficiency of OPs can be improved through chemical, microbial, soil amending, and genetic approaches, which primarily target bioavailability, uptake, and sequestration of HMs. In this review, we explore the phytoextraction potential of OPs for remediation of HMs-polluted environments, underpinning mechanisms, efficiency improvement strategies, and highlight the potential future research directions.
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Affiliation(s)
- Behnam Asgari Lajayer
- Department of Soil Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Nader Khadem Moghadam
- Department of Soil Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
| | | | - Mansour Ghorbanpour
- Department of Medicinal Plants, Faculty of Agriculture and Natural Resources, Arak University, Arak, 38156-8-8349, Iran.
| | - Khalil Kariman
- School of Agriculture and Environment M087, The University of Western Australia, Crawley, WA, 6009, Australia
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Yao H, Zhang F, Qing M, Chen M, Lu Z, Zhang Q, Lin L, Liao M, Chen S, Huang Z, Chen C, Ren W. Effects of mutual grafting on the cadmium accumulation characteristics of two ecotypes of Solanum photeinocarpum. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:503-508. [PMID: 30656956 DOI: 10.1080/15226514.2018.1540544] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The effects of mutual grafting on the cadmium (Cd) accumulation characteristics of two ecotypes (farmland and mining) of the potential Cd-hyperaccumulator Solanum photeinocarpum were studied through a pot experiment for one month. Four treatments were used in the experiment: ungrafted farmland ecotype (F-CK), ungrafted mining ecotype (M-CK), the farmland ecotype as the scion grafted onto rootstocks of the mining ecotype (F-Scion), and the mining ecotype as the scion grafted onto rootstocks of the farmland ecotype (M-Scion). Mutual grafting increased the rootstock biomass of both S. photeinocarpum ecotypes. However, mutual grafting decreased the scion biomass of F-Scion compared with F-CK and M-CK, and the scion biomass of M-Scion was higher than that of M-CK and lower than that of F-CK. The Cd content in the rootstock of M-Scion increased compared with F-CK, and the Cd content in the rootstock of F-Scion increased compared with M-CK, but mutual grafting decreased the Cd content in scions of both S. photeinocarpum ecotypes. Mutual grafting increased Cd extraction by rootstocks of both S. photeinocarpum ecotypes, but decreased extraction by scions. Therefore, mutual grafting can increase Cd accumulation in S. photeinocarpum rootstocks but not increase Cd accumulation in S. photeinocarpum scions in a short period.
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Affiliation(s)
- Huan Yao
- a College of Horticulture , Sichuan Agricultural University , Chengdu , China
| | - Fenqin Zhang
- b College of Agriculture and Biological Technology , Hexi University , Zhangye , China
| | - Mei Qing
- a College of Horticulture , Sichuan Agricultural University , Chengdu , China
| | - Maolin Chen
- c College of Economics , Sichuan Agricultural University , Chengdu , China
| | - Zicheng Lu
- d College of Agronomy , Sichuan Agricultural University , Chengdu , China
| | - Qian Zhang
- a College of Horticulture , Sichuan Agricultural University , Chengdu , China
| | - Lijin Lin
- e Institute of Pomology and Olericulture , Sichuan Agricultural University , Chengdu , China
| | - Ming'an Liao
- a College of Horticulture , Sichuan Agricultural University , Chengdu , China
| | - Shengxiang Chen
- a College of Horticulture , Sichuan Agricultural University , Chengdu , China
| | - Zhi Huang
- a College of Horticulture , Sichuan Agricultural University , Chengdu , China
| | - Cheng Chen
- c College of Economics , Sichuan Agricultural University , Chengdu , China
| | - Wei Ren
- f Maize Research Institute , Neijiang Academy of Agricultural Sciences , Neijiang , China
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Yao X, Yang N, Li Y, Bian H, Ding X, Zhou Q. Bioaccumulation in Miscanthus sacchariflorus grown on cadmium-contaminated sediments: a comparative study between submerged and non-submerged environments. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:240-245. [PMID: 30656962 DOI: 10.1080/15226514.2018.1524844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bioaccumulation of heavy metals in aquatic plants is significantly affected by hydrological regime and therefore the accumulation and translocation of cadmium in five organs-panicle, leaf, stem, root, and bud-of an emergent plant (Miscanthus sacchariflorus) were compared between the submerged environment and non-submerged environment. In the submerged condition, the cadmium concentration was higher in the panicle and leaf than in the stem, root, and bud. Cadmium concentration in the root exhibited a positive regression with cadmium concentration in the sediment. However, cadmium concentration in the panicle, leaf, stem, and bud exhibited no significant regression with cadmium concentration in the sediment. In the non-submerged environment, the cadmium concentration was higher in the below-ground organs than in the aboveground organs. The mean bioaccumulation coefficient in the 24 investigated plots in the submerged environment was higher than that in the 20 and 40 mg kg-1 cadmium treatments in the non-submerged environment. The mean translocation factor in the submerged environment was nine times higher than that in non-submerged environment. These results indicate that submergence enhanced cadmium bioaccumulation in the aboveground organs and that this plant can be used to remove heavy metals from polluted rivers and lakes.
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Affiliation(s)
- Xin Yao
- a College of Bioscience and Biotechnology , Hunan Agricultural University , Changsha , China
- c Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area , Hunan Agricultural University , Changsha , China
| | - Nan Yang
- b Hunan Cooperation Center of Water Resources Research and Development , Changsha , China
| | - Youzhi Li
- a College of Bioscience and Biotechnology , Hunan Agricultural University , Changsha , China
- c Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area , Hunan Agricultural University , Changsha , China
| | - Hualin Bian
- a College of Bioscience and Biotechnology , Hunan Agricultural University , Changsha , China
- c Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area , Hunan Agricultural University , Changsha , China
| | - Xiaohui Ding
- a College of Bioscience and Biotechnology , Hunan Agricultural University , Changsha , China
- c Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area , Hunan Agricultural University , Changsha , China
| | - Qiaoqiao Zhou
- a College of Bioscience and Biotechnology , Hunan Agricultural University , Changsha , China
- c Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area , Hunan Agricultural University , Changsha , China
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Eid EM, Alrumman SA, Galal TM, El-Bebany AF. Prediction models for evaluating the heavy metal uptake by spinach (Spinacia oleracea L.) from soil amended with sewage sludge. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 20:1418-1426. [PMID: 30652486 DOI: 10.1080/15226514.2018.1488815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 05/15/2018] [Accepted: 05/18/2018] [Indexed: 06/09/2023]
Abstract
The risk evaluation of polluted soil requires the application of precise models to predict the heavy metal uptake by plants so possible human risks can be identified. Therefore, the present work was conducted to develop regression models for predicting the concentrations of heavy metals in spinach plants from their concentration in the soil by using the organic matter content and soil pH as co-factors. The soil improved with sewage sludge was slightly alkaline and had a relatively high organic matter content. Similar to the soil analysis, Fe had the highest median concentration, while Cd had the lowest concentration in the roots and leaves. Heavy metals accumulated in the roots and leaves in the order Fe > Mn > Zn > Cu > Cr > Ni > Co > Pb > Cd. The bio-concentration factor of the investigated heavy metals, from soil to roots, did not exceed one. The spinach was recognized by a translocation factor <1.0 for all of the heavy metals except Zn. Plant heavy metal concentrations were positively correlated with the soil organic matter content and negatively correlated with soil pH. The leaf Cr, Fe and Zn and the root Cr, Fe, Pb and Zn concentrations were positively correlated with the respective soil heavy metals. In addition, a linear correlation was found between the bio-concentration factor of heavy metals and soil pH and organic matter content. Regression models with high model efficiency and coefficients of determination and low mean normalized average errors, which indicate the efficiency of the models, were produced for predicting the plant heavy metal contents by using the soil pH and organic matter content as co-factors.
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Affiliation(s)
- Ebrahem M Eid
- a Biology Department, College of Science , King Khalid University , Abha , Saudi Arabia
- b Botany Department, Faculty of Science , Kafr El-Sheikh University , Kafr El-Sheikh , Egypt
| | - Sulaiman A Alrumman
- a Biology Department, College of Science , King Khalid University , Abha , Saudi Arabia
| | - Tarek M Galal
- c Botany and Microbiology Department, Faculty of Science , Helwan University , Cairo , Egypt
| | - Ahmed F El-Bebany
- d Plant Pathology Department, Faculty of Agriculture , Alexandria University , Alexandria , Egypt
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Liu Z, Chen W, He X. Evaluation of hyperaccumulation potentials to cadmium (Cd) in six ornamental species (compositae). INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 20:1464-1469. [PMID: 30652498 DOI: 10.1080/15226514.2018.1501343] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Phytoremediation is considered as a promising soil remediation technique. In the present study, the growth responses, cadmium (Cd) accumulation and uptake capability of six popular compositae species, namely, Taraxacum mongolicum Hand.-Mazz., Tagetes erecta L., Tagetes patula L., Zinnia elegans Jacq., Centaurea cyanus L. and Gerbera jamesonii Bolus under Cd stress were investigated. Among the six compositae species, the growth of T. erecta L. and T. patula L. improved under 10 mg kg-1 Cd exposure in term of the total biomass and height increased along with the increased Cd concentration in soil, and the growth of the two plants had no significant differences at the high Cd concentration (100 mg kg-1), which indicated that they have good tolerance to Cd toxicity. At the same time, the two plants have higher biomass than four other plants. Furthermore, they can accumulate Cd above 100 μg g-1 dry tissue, which is the threshold value of a Cd-hyperaccumulator, and have higher Cd uptake ability, translocation factor (TF) and bioconcentration factor (BCF) values. According to these traits, it was shown that T. erecta L. and T. patula L. had strong tolerance and accumulation capability to Cd, therefore they can become potential hyperaccumulators in phytoremediation of Cd-contaminated soils.
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Affiliation(s)
- Zhouli Liu
- a CAS Key Laboratory of Forest Ecology and Management , Institute of Applied Ecology , Shenyang , China
| | - Wei Chen
- a CAS Key Laboratory of Forest Ecology and Management , Institute of Applied Ecology , Shenyang , China
| | - Xingyuan He
- a CAS Key Laboratory of Forest Ecology and Management , Institute of Applied Ecology , Shenyang , China
- b University of Chinese Academy of Sciences , Beijing , China
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Li Q, Wang H, Wang H, Li Y, Wang Z, Zhang X. Effect of arsenate on endogenous levels of cytokinins with different existing forms in two Pteris species. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 132:652-659. [PMID: 30340177 DOI: 10.1016/j.plaphy.2018.10.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/25/2018] [Accepted: 10/09/2018] [Indexed: 06/08/2023]
Abstract
Our previous results showed that content of trans-zeatin (tZ) increases in leaves of heavy metal hyperaccumulators but decreases in non-hyperaccumulators growing in multiple heavy metal polluted soils. However, the relationship between arsenic (As) accumulation and endogenous forms of cytokinins (CTKs) in As hyperaccumulators remains unknown. Here a hydroponic experiment was conducted to compare the CTK forms in the As hyperaccumulator Pteris cretica var. nervosa and non-hyperaccumulator Pteris ensiformis under arsenate stress (0, 2, 5, and 10 mg L-1). A simple and cost-effective procedure for the determination of CTK forms in plants was established, and a stepwise regression analysis was used to study the relationship among total As contents and different forms of endogenous CTKs in fronds of two plants. The results showed that the optimized chromatographic parameters were Zobax SB-C18 column (5 μm × 4.6 mm × 250 mm), UV detection detector at 269 nm, a flow rate of 0.6 mL min-1, constant temperature of 45 °C and gradient elution with methanol-acetonitrile-1% acetic acid. Contents of chlorophylls in the fronds of P. ensiformis were significantly decreased with addition of As compared to P. cretica var. nervosa. Furthermore, the total As content in fronds of P. cretica var. nervosa was positively correlated to the contents of N6-(2-isopentenyl) adenine-7-β-D-glucoside (iP7G) and N6-(2-isopentenyl) adenosine (iPR). However, the total As content in fronds of P. ensiformis was negatively correlated to its trans-zeatin riboside (ZR) content. Therefore, iP7G and iPR could positively improve As accumulation by P. cretica var. nervosa.
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Affiliation(s)
- Qinchun Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Hongbin Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China.
| | - Haijuan Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Yang Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Zhongzhen Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Xuemei Zhang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, China
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Wu M, Luo Q, Liu S, Zhao Y, Long Y, Pan Y. Screening ornamental plants to identify potential Cd hyperaccumulators for bioremediation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 162:35-41. [PMID: 29960120 DOI: 10.1016/j.ecoenv.2018.06.049] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/18/2018] [Accepted: 06/14/2018] [Indexed: 05/27/2023]
Abstract
To identify possible cadmium (Cd) accumulators or hyperaccumulators among ornamental plants, a pot experiment involving increasing Cd concentration (0, 5, 15, 30, 60, and 100 mg kg-1) was conducted among seven species. The principal objective was to screen for ornamental plants with an exceptional ability to accumulate and translocate Cd ions as well as sufficient biomass for harvesting. Regarding shoot biomass, root biomass, plant height and tolerance index (TI), Malva rotundifolia showed high tolerance to Cd and Malva crispa, Sida rhombifolia, Celosia argentea and Celosia cristata medium tolerance; Althaea rosea and Abutilon theophrasti were more sensitive to Cd than the other plants. A hormetic response was induced by Cd in M. crispa, C. argentea, C. cristata and M. rotundifolia. Based on its capacity for Cd accumulation, bioaccumulation coefficients (BCFs) and translocation factors (TFs), M. rotundifolia was selected from candidate plants after 60 days of exposure to Cd-contaminated soil and found to have accumulated more than 200 mg kg-1 Cd in its roots and 900 mg kg-1 in its shoots. Moreover, M. rotundifolia BCFs and TFs were higher than 1.0, with the former ranging from 1.41 to 3.31 and the latter from 1.03 to 7.37. Taken together, these results indicate that M. rotundifolia can be classified as a model hyperaccumulator.
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Affiliation(s)
- Mengxi Wu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Qiao Luo
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Shiliang Liu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Yin Zhao
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Yue Long
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, PR China
| | - Yuanzhi Pan
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu 611130, PR China.
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