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Alatawi A, Mfarrej MFB, Alshegaihi RM, Asghar MA, Mumtaz S, Yasin G, Marc RA, Fahad S, Elsharkawy MM, Javed S, Ali S. Application of silicon and sodium hydrosulfide alleviates arsenic toxicity by regulating the physio-biochemical and molecular mechanisms of Zea mays. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27739-y. [PMID: 37243763 DOI: 10.1007/s11356-023-27739-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 05/15/2023] [Indexed: 05/29/2023]
Abstract
Soil contamination with toxic heavy metals (such as arsenic (As)) is becoming a serious global problem due to rapid development of social economy, although the use of silicon (Si) and sodium hydrosulfide (NaHS) has been found effective in enhancing plant tolerance against biotic and abiotic stresses including the As toxicity. For this purpose, a pot experiment was conducted using the different levels of As toxicity in the soil, i.e., (0 mM (no As), 50, and 100 µM) which were also supplied with the different exogenous levels of Si, i.e., (0 (no Si), 1.5, and 3 mM) and also with the NaHS, i.e., (0 (no NaHS), 1, and 2 mM) on growth, photosynthetic pigments, gas exchange characteristics, oxidative stress biomarkers, antioxidant machinery (enzymatic and non-enzymatic antioxidants), and their gene expression, ion uptake, organic acid exudation, and As uptake of maize (Zea mays L.). Results from the present study showed that the increasing levels of As in the soil significantly (P < 0.05) decreased plant growth and biomass, photosynthetic pigments, gas exchange attributes, sugars, and nutritional contents from the roots and shoots of the plants. In contrast, increasing levels of As in the soil significantly (P < 0.05) increased oxidative stress indicators in terms of malondialdehyde, hydrogen peroxide, and electrolyte leakage and also increased organic acid exudation patter in the roots of Z. mays, although the activities of enzymatic antioxidants and the response of their gene expressions in the roots and shoots of the plants and non-enzymatic such as phenolic, flavonoid, ascorbic acid, and anthocyanin contents were initially increased with the exposure of 50 µM As, but decreased by the increasing the As concentration 100 µM in the soil. The negative impact of As toxicity can overcome the application of Si and NaHS, which ultimately increased plant growth and biomass by capturing the reactive oxygen species and decreased oxidative stress in Z. mays by decreasing the As contents in the roots and shoots of the plants. Our results also showed that the Si was more sever and showed better results when we compared with NaHS under the same treatment of As in the soil. Research findings, therefore, suggest that the combined application of Si and NaHS can ameliorate As toxicity in Z. mays, resulting in improved plant growth and composition under metal stress, as depicted by balanced exudation of organic acids.
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Affiliation(s)
- Aishah Alatawi
- Department of Biology, Faculty of Science, University of Tabuk, 71421, Tabuk, Saudi Arabia
| | - Manar Fawzi Bani Mfarrej
- Department of Life and Environmental Sciences, College of Natural and Health Sciences, Zayed University, 144534, Abu Dhabi, United Arab Emirates
| | - Rana M Alshegaihi
- Department of Biology, College of Science, University of Jeddah, Jeddah, 21493, Saudi Arabia
| | - Muhammad Ahsan Asghar
- Department of Biological Resources, Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik U. 2, H-2462, Martonvásár, Hungary
| | - Sahar Mumtaz
- Department of Botany, Division of Science and Technology, University of Education, Lahore, 54770, Pakistan
| | - Ghulam Yasin
- Mountain Research Centre for Field Crops, Khudwani, Sher-E-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, 192101, Jammu and Kashmir, India
| | - Romina Alina Marc
- Faculty of Food Science and Technology, Department of Food Engineering, University of Agricultural Science and Veterinary Medicine Cluj-Napoca, Cluj-Napoca-Napoca, Romania
| | - Shah Fahad
- Department of Agronomy, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Mardan, 23200, Pakistan.
| | - Mohsen Mohamed Elsharkawy
- Department of Agricultural Botany, Faculty of Agriculture, Kafrelsheikh University, 33516, Kafr El-Sheikh, Egypt
| | - Sadia Javed
- Department of Biochemistry, Government College University, Faisalabad, 38000, Pakistan
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000, Pakistan
- Department of Biological Sciences and Technology, China Medical University, Taichung, 40402, Taiwan
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Zia UU, Niazi AR, Ahmad Z, Alharby HF, Waraich EA, Abbasi A, Iqbal MA, Ahmed S, Hina S. Dose optimization of silicon for boosting arbuscular mycorrhizal fungi colonization and cadmium stress mitigation in maize (Zea mays L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:67071-67086. [PMID: 37103705 DOI: 10.1007/s11356-023-26902-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 04/03/2023] [Indexed: 05/25/2023]
Abstract
The foliar applied silicon (Si) has the potential to ameliorate heavy metals, especially cadmium (Cd) toxicity; however, Si dose optimization is strategically important for boosting the growth of soil microbes and Cd stress mitigation. Thus, the current research was performed to assess the Si-induced physiochemical and antioxidant trait alterations along with Vesicular Arbuscular Mycorrhiza (VAM) status in maize roots under Cd stress. The trial included foliar Si application at the rate of 0, 5, 10, 15, and 20 ppm while Cd stress (at the rate of 20 ppm) was induced after full germination of maize seed. The response variables included various physiochemical traits such as leaf pigments, protein, and sugar contents along with VAM alterations under induced Cd stress. The results revealed that exogenous application of Si in higher doses remained effective in improving the leaf pigments, proline, soluble sugar, total proteins, and all free amino acids. Additionally, the same treatment remained unmatched in terms of antioxidant activity compared to lower doses of foliar-applied Si. Moreover, VAM was recorded to be at peak under 20 ppm Si treatment. Thus, these encouraging findings may serve as a baseline to develop Si foliar application as a biologically viable mitigation strategy for maize grown in Cd toxicity soils. Overall, the exogenous application of Si helpful for reducing the uptake of Cd in maize and also improving the mycorrhizal association as well as the philological mechanism and antioxidant activities in plant under cadmium stress conditions. Also, future studies must test more doses concerning to varying Cd stress levels along with determining the most responsive crop stage for Si foliar application.
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Affiliation(s)
- Ubaid Ullah Zia
- Institute of Botany, University of the Punjab Lahore, Lahore, 54590, Pakistan
| | - Abdul Rehman Niazi
- Institute of Botany, University of the Punjab Lahore, Lahore, 54590, Pakistan
| | - Zahoor Ahmad
- University of Central Punjab Constituent College Yazman Road Bahawalpur, Bahawalpur, 63000, Pakistan.
| | - Hesham F Alharby
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Plant Biology Research Group, Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ejaz Ahmad Waraich
- Department of Agronomy, University of Agriculture, Faisalabad, 78000, Pakistan
| | - Asim Abbasi
- Department of Environmental Sciences, Kohsar University Murree, Murree, 47150, Pakistan
| | - Muhammad Aamir Iqbal
- Department of Agronomy, Faculty of Agriculture, University of Poonch Rawalakot, AJK, Rawalakot, Pakistan
| | - Sarfraz Ahmed
- Department of Botany, University of Okara, Punjab, 56300, Pakistan
| | - Shozab Hina
- Institute of Botany, University of the Punjab Lahore, Lahore, 54590, Pakistan
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Li H, Jin R, Xu Z, Hu H, Kalkhajeh YK, Zhao Y, Zhan L. Application of chelate GLDA for remediating Cd-contaminated farmlands using Tagetes patula L. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:3774-3782. [PMID: 35960470 DOI: 10.1007/s11356-022-22470-6] [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: 03/07/2022] [Accepted: 08/06/2022] [Indexed: 05/27/2023]
Abstract
In the present study, via a 180-day field trial, the indicators of soil total cadmium, DTPA-Cd, organic matter, and plant cadmium extraction were tested after the application of chelate tetrasodium glutamate diacetate (GLDA) to investigate the potential of GLDA combined with Tagetes patula L. to remediate cadmium-contaminated soil. To do so, five GLDA treatments (e.g., 0, 292.5, 585, 1170, and 2340 kg hm-2) were practiced. For each treatment, the total GLDA was divided into two applications with 15-day intervals (0.25, 0.47, and 0.61 mg·kg-1) under T. patula plantation. Compared with the control, our results showed that GLDA application significantly increased the biomass of aerial parts of T. patula by 21.9% (p < 0.05). Likewise, Cd content in aboveground and underground parts of T. patula increased by 94.7% and 60.5%, respectively, compared with the control (p < 0.05). GLDA application caused significant increases in Cd accumulations in cell soluble fraction and cell wall by 290% and 123%, respectively (p < 0.05); soil pH and DTPA-Cd content increased with the increase of total application of GLDA. Co-application of GLDA (2340 kg hm-2) and T. patula reduced the total soil Cd content by 12.87% compared with the soil background. Altogether, our findings conclude on the efficacy of GLDA application for the remediation of Cd-contaminated farmlands under T. patula cultivation.
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Affiliation(s)
- Hongchuan Li
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Rui Jin
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Zhaowen Xu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Hongxiang Hu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
| | - Yusef Kianpoor Kalkhajeh
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Yingying Zhao
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Linchuan Zhan
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
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Li H, Kong D, Zhang B, Kalkhajeh YK, Zhao Y, Huang J, Hu H. Chemical forms of cadmium in soil and its distribution in French marigold sub-cells in response to chelator GLDA. Sci Rep 2022; 12:17577. [PMID: 36266400 PMCID: PMC9584924 DOI: 10.1038/s41598-022-20780-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 09/19/2022] [Indexed: 01/13/2023] Open
Abstract
The use of degradable chelating agents to facilitate phytoextraction is a promising low-cost method for the remediation of heavy metal-contaminated soils. However, there are few studies on how plants and soils respond to the chelating agents. In this study, the responses of French marigold (Tagetes patula L.) and soil cadmium (Cd) to the chelator tetrasodium glutamate (GLDA) was investigated in a 180 d field trial. Five GLDA treatments (0, 292.5, 585, 1170, and 2340 kg hm-2) were carried out in a Cd-contaminated soil (0.47 mg kg-1) under French marigold plantation. The results showed that the application of GLDA promoted the transformation of other forms of Cd in soil to exchangeable state, and the exchangeable Cd and Fe-Mn oxide bound state increased by 42.13% and 32.97% (p < 0.05), respectively. The cell wall Cd accumulations significantly increased 9.39% (p < 0.05) and the percentages of soluble fractions increased by 460.33% (p < 0.05). Furthermore, increases occurred in soil pH, as well as DOC and DTPA-Cd contents with increasing the total amount of GLDA. The composite application of GLDA (2340 kg hm-2) with French marigold reduced the total soil Cd content by 7.59% compared with the soil background. Altogether, results of this study suggested that the application of GLDA can effectively activate soil Cd and enhance the capability of French marigold for the remediation of Cd-contaminated soils.
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Affiliation(s)
- Hongchuan Li
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Deming Kong
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Borui Zhang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Yusef Kianpoor Kalkhajeh
- Department of Environmental Science, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, 325060, Zhejiang, People's Republic of China
| | - Yingying Zhao
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China
| | - Jieying Huang
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
| | - Hongxiang Hu
- Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention, School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
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Karalija E, Selović A, Bešta-Gajević R, Šamec D. Thinking for the future: Phytoextraction of cadmium using primed plants for sustainable soil clean-up. PHYSIOLOGIA PLANTARUM 2022; 174:e13739. [PMID: 35765975 DOI: 10.1111/ppl.13739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/14/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) soil contamination is a global problem for food security due to its ubiquity, toxicity at low levels, persistence, and bioaccumulation in living organisms. Humans' intake of heavy metals is usually due to direct contact with contaminated soil, through the food chain (Cd accumulation in crops and edible plants) or through drinking water in cases of coupled groundwater-surface water systems. Phytoextraction is one of the eco-friendly, sustainable solutions that can be used as a method for soil clean-up with the possibility of re-use of extracted metals through phytomining. Phytoextraction is often limited by the tolerance level of hyperaccumulating plants and the restriction of their growth. Mechanisms of hyperaccumulation of heavy metals in tolerant species have been studied, but there are almost no data on mechanisms of further improvement of the accumulation capacity of such plants. Priming can influence plant stress tolerance by the initiation of mild stress cues resulting in acclimation of the plant. The potential of plant priming in abiotic stress tolerance has been extensively investigated using different types of molecules that are supplemented exogenously to plant organs (roots, leaves, etc.), resulting in enhanced tolerance of abiotic stress. This review focuses on mechanisms of enhancement of plant stress tolerance in hyperaccumulating plants for their exploitation in phytoextraction processes.
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Affiliation(s)
- Erna Karalija
- Laboratory for Plant Physiology, Department of Biology, Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Alisa Selović
- Laboratory for Analytical Chemistry, Department of Chemistry, Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Renata Bešta-Gajević
- Laboratory for Microbiology, Department for Biology, Faculty of Science, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Dunja Šamec
- Department of Food Technology, University North, Koprivnica, Croatia
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Ilyas N, Akhtar N, Yasmin H, Sahreen S, Hasnain Z, Kaushik P, Ahmad A, Ahmad P. Efficacy of citric acid chelate and Bacillus sp. in amelioration of cadmium and chromium toxicity in wheat. CHEMOSPHERE 2022; 290:133342. [PMID: 34922965 DOI: 10.1016/j.chemosphere.2021.133342] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/12/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
Heavy metals contamination in agricultural soil is a major issue having drastic effects on plants and human health. To solve this issue, we have formulated and tested a new approach of fusion of inorganic (citric acid chelate) and organic (Bacillus sp.) amelioration methods for heavy metals. The Bacillus sp. was heavy metal tolerant and showed plant growth-promoting characteristics including phosphate solubilization, siderophore production, hydrogen cyanide production, indole acetic acid production, and 1-Aminocyclopropane-1-carboxylate deaminase production. The analysis of data showed that plants receiving the combined application of citric acid (CA) chelate and Bacillus sp. mitigated heavy metal toxicity. They augmented the biomass production and amount of photosynthetic pigments in plant cells. They suppressed the negative effects of Cadmium (Cd) and Chromium (Cr) on plants' metabolic systems. A considerable increase was also observed in the activity of enzymatic and non-enzymatic antioxidants which reduced the damaging effects of reactive oxygen species and maintained internal structures of cells. The decrease in the content of Cr and Cd in wheat grains by the treatment of CA chelate and Bacillus sp. was 51%, and 27% respectively. The bioaccumulation of metals was also reduced to 49% (Cr) and 57% (Cd). This approach can be tested and applied in field conditions for soils with heavy metals contamination.
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Affiliation(s)
- Noshin Ilyas
- Department of Botany, PMAS-Arid Agriculture University, Rawalpindi, 46300, Pakistan.
| | - Nosheen Akhtar
- Department of Botany, PMAS-Arid Agriculture University, Rawalpindi, 46300, Pakistan
| | - Humaira Yasmin
- Department of Bio-Sciences, COMSATS University, Islamabad, 45550, Pakistan
| | - Sumaira Sahreen
- Principle Scientific Officer, Pakistan Museum of Natural History/ Pakistan Science Foundation, Islamabad, Pakistan
| | - Zuhair Hasnain
- Department of Agronomy, PMAS-Arid Agriculture University, Rawalpindi, 46300, Pakistan
| | - Prashant Kaushik
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana, Universitat Politècnica de València, Camino de Vera 14, 46022, Valencia, Spain
| | - Ajaz Ahmad
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Parvaiz Ahmad
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
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Silicon Fertigation Regimes Attenuates Cadmium Toxicity and Phytoremediation Potential in Two Maize (Zea mays L.) Cultivars by Minimizing Its Uptake and Oxidative Stress. SUSTAINABILITY 2022. [DOI: 10.3390/su14031462] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Silicon (Si) is an important plant-derived metabolite that is significantly involved in maintaining the stability of a plant’s metabiological, structural and physiological characteristics under the abiotic stressed environment. We conducted the present study using maize (Zea mays L.) cultivars (Sadaf and EV-20) grown in sand artificially contaminated with cadmium (500 µM) in Hoagland’s nutrient solution to investigate its efficiency. Results from the present study evidenced that the toxic concentration of Cd in sand significantly reduced shoot length, root length, shoot fresh weight, root fresh weight, shoot dry weight and root dry weight by 88, 94, 89, 86 99 and 99%, respectively, in Sadaf while decreasing by 98, 97, 93, 99, 84 and 91%, respectively, in EV-20. Similarly, Cd toxicity decreased total chlorophyll and carotenoid content in both varieties of Z. mays. Moreover, the activities of various antioxidants (superoxidase dismutase, peroxidase and catalase) increased under the toxic concentration of Cd in sand which was manifested by the presence of membrane permeability, malondialdehyde (MDA), and hydrogen peroxide (H2O2). Results additionally showed that the toxic effect of Cd was more severe in EV-20 compared with Sadaf under the same conditions of environmental stresses. In addition, the increased concentration of Cd in sand induced a significantly increased Cd accumulation in the roots (141 and 169 mg kg−1 in Sadaf and EV-20, respectively), and shoots (101 and 141 mg kg−1 in Sadaf and EV-20, respectively), while; EV-20 accumulated higher amounts of Cd than Sadaf, with the values for both bioaccumulation factor (BAF) and translocation factor (TF) among all treatments being less than 1. The subsequent negative results of Cd injury can be overcome by the foliar application of Si which not only increased plant growth and biomass, but also decreased oxidative damage induced by the higher concentrations of MDA and H2O2 under a Cd-stressed environment. Moreover, external application of Si decreased the concentration of Cd in the roots and shoots of plants, therefore suggesting that the application of Si can ameliorate Cd toxicity in Z. mays cultivars and results in improved plant growth and composition under Cd stress by minimizing oxidative damage to membrane-bound organelles.
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Afzal J, Saleem MH, Batool F, Elyamine AM, Rana MS, Shaheen A, El-Esawi MA, Tariq Javed M, Ali Q, Arslan Ashraf M, Hussain GS, Hu C. Role of Ferrous Sulfate (FeSO 4) in Resistance to Cadmium Stress in Two Rice ( Oryza sativa L.) Genotypes. Biomolecules 2020; 10:E1693. [PMID: 33353010 PMCID: PMC7766819 DOI: 10.3390/biom10121693] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 12/11/2022] Open
Abstract
The impact of heavy metal, i.e., cadmium (Cd), on the growth, photosynthetic pigments, gas exchange characteristics, oxidative stress biomarkers, and antioxidants machinery (enzymatic and non-enzymatic antioxidants), ions uptake, organic acids exudation, and ultra-structure of membranous bounded organelles of two rice (Oryza sativa L.) genotypes (Shan 63 and Lu 9803) were investigated with and without the exogenous application of ferrous sulfate (FeSO4). Two O. sativa genotypes were grown under different levels of CdCl2 [0 (no Cd), 50 and 100 µM] and then treated with exogenously supplemented ferrous sulfate (FeSO4) [0 (no Fe), 50 and 100 µM] for 21 days. The results revealed that Cd stress significantly (p < 0.05) affected plant growth and biomass, photosynthetic pigments, gas exchange characteristics, affected antioxidant machinery, sugar contents, and ions uptake/accumulation, and destroy the ultra-structure of many membranous bounded organelles. The findings also showed that Cd toxicity induces oxidative stress biomarkers, i.e., malondialdehyde (MDA) contents, hydrogen peroxide (H2O2) initiation, and electrolyte leakage (%), which was also manifested by increasing the enzymatic antioxidants, i.e., superoxidase dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX) and non-enzymatic antioxidant compounds (phenolics, flavonoids, ascorbic acid, and anthocyanin) and organic acids exudation pattern in both O. sativa genotypes. At the same time, the results also elucidated that the O. sativa genotypes Lu 9803 are more tolerant to Cd stress than Shan 63. Although, results also illustrated that the exogenous application of ferrous sulfate (FeSO4) also decreased Cd toxicity in both O. sativa genotypes by increasing antioxidant capacity and thus improved the plant growth and biomass, photosynthetic pigments, gas exchange characteristics, and decrease oxidative stress in the roots and shoots of O. sativa genotypes. Here, we conclude that the exogenous supplementation of FeSO4 under short-term exposure of Cd stress significantly improved plant growth and biomass, photosynthetic pigments, gas exchange characteristics, regulate antioxidant defense system, and essential nutrients uptake and maintained the ultra-structure of membranous bounded organelles in O. sativa genotypes.
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Affiliation(s)
- Javaria Afzal
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China; (J.A.); (M.S.R.)
- Department of Soil Science, Sindh Agriculture University, Tandojam 70060, Pakistan
| | - Muhammad Hamzah Saleem
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;
| | - Fatima Batool
- Department of Botany, Division of Science and Technology, University of Education Lahore, Punjab 54770, Pakistan;
| | | | - Muhammad Shoaib Rana
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China; (J.A.); (M.S.R.)
| | - Asma Shaheen
- Department of Earth Sciences, University of Sargodha, Sargodha 40100, Pakistan;
| | - Mohamed A. El-Esawi
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt;
| | - Muhammad Tariq Javed
- Department of Botany, Government College University, Faisalabad 38000, Pakistan; (M.T.J.); (Q.A.); (M.A.A.)
| | - Qasim Ali
- Department of Botany, Government College University, Faisalabad 38000, Pakistan; (M.T.J.); (Q.A.); (M.A.A.)
| | - Muhammad Arslan Ashraf
- Department of Botany, Government College University, Faisalabad 38000, Pakistan; (M.T.J.); (Q.A.); (M.A.A.)
| | - Ghulam Sabir Hussain
- Department of Agronomy, Bahauddin Zakariya University, Multan 60800, Pakistan;
- Department of Technical Services, Fatima Agri Sales and Services, Multan 60800, Pakistan
| | - Chengxiao Hu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China; (J.A.); (M.S.R.)
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Javed MT, Saleem MH, Aslam S, Rehman M, Iqbal N, Begum R, Ali S, Alsahli AA, Alyemeni MN, Wijaya L. Elucidating silicon-mediated distinct morpho-physio-biochemical attributes and organic acid exudation patterns of cadmium stressed Ajwain (Trachyspermum ammi L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 157:23-37. [PMID: 33069978 DOI: 10.1016/j.plaphy.2020.10.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 10/08/2020] [Indexed: 05/11/2023]
Abstract
Soil contamination with toxic heavy metals [such as cadmium (Cd)] is becoming a serious global problem due to rapid development of social economy. Silicon (Si), being an important fertilizer element, has been found effective in enhancing plant tolerance against biotic and abiotic stresses. The present study investigated the extent to which different levels of Si modulated the Cd tolerance of Ajwain (Trachyspermum ammi L.) seedlings when maintained in artificially Cd spiked regimes. A pot experiment was conducted under controlled conditions for four weeks, by using sand, mixed with different levels of Cd i.e., 0, 1.5 and 3 mM together with the application of Si at 0, 1.5 and 3 mM levels to monitor different growth, gaseous exchange, oxidative stress, antioxidative responses, minerals accumulation, organic acid exudation patterns of T. ammi seedlings. Our results depicted that Cd addition to growth medium significantly decreased plant growth and biomass, gaseous exchange attributes and minerals uptake by T. ammi seedlings as compared to the plants grown without addition of Cd. However, Cd toxicity boosted the production of reactive oxygen species (ROS) by increasing the contents of malondialdehyde (MDA), which is the indication of oxidative stress in T. ammi seedlings and was also manifested by hydrogen peroxide (H2O2) contents and electrolyte leakage to the membrane bounded organelles. Although, activities of various antioxidative enzymes like superoxidase dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX) initially increased up to a Cd level of 1.5 mM but were significantly diminished at the highest Cd level of 3 mM. Results revealed that the anthocyanin and soluble proteins contents were decreased in seedlings grown under elevating Cd levels but increased the Cd accumulation of T. ammi roots and shoots. The negative impacts of Cd injury were reduced by the application of Si which increased plant growth and biomass, improved photosynthetic apparatus, antioxidant enzymes, minerals uptake together with diminished exudation of organic acids as well as oxidative stress indicators in roots and shoots of T. ammi by decreasing Cd retention in different plant parts. Research findings, therefore, suggested that Si application can ameliorate Cd toxicity in T. ammi seedlings and resulted in improved plant growth and composition under metal stress as depicted by balanced exudation of organic acids.
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Affiliation(s)
- Muhammad Tariq Javed
- Department of Botany, Government College University, Faisalabad, 38000, Pakistan
| | - Muhammad Hamzah Saleem
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Sidra Aslam
- Department of Bioinformatics and Biotechnology, Government College University Allama Iqbal Road, 38000, Faisalabad, Pakistan
| | - Muzammal Rehman
- School of Agriculture, Yunnan University, Kunming, 650504, China
| | - Naeem Iqbal
- Department of Botany, Government College University, Faisalabad, 38000, Pakistan
| | - Ruqiyya Begum
- Department of Botany, Government College University, Faisalabad, 38000, Pakistan
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University Allama Iqbal Road, 38000, Faisalabad, Pakistan; Department of Biological Sciences and Technology, China Medical University, Taichung, 40402, Taiwan.
| | - Abdulaziz Abdullah Alsahli
- Department of Botany and Microbiology, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Mohammed Nasser Alyemeni
- Department of Botany and Microbiology, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Leonard Wijaya
- Department of Botany and Microbiology, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
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10
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Hayat K, Menhas S, Bundschuh J, Zhou P, Niazi NK, Hussain A, Hayat S, Ali H, Wang J, Khan AA, Ali A, Munis FH, Chaudhary HJ. Plant growth promotion and enhanced uptake of Cd by combinatorial application of Bacillus pumilus and EDTA on Zea mays L. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 22:1372-1384. [PMID: 32579378 DOI: 10.1080/15226514.2020.1780410] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In developing countries, Cd contamination is ubiquitous which limits agriculture productivity. The current study was designed to investigate the efficacy of plant-Bacillus pumilus-ethylene diamine tetraacetic acid (EDTA) and plant-microbe-chelator (PMC) synergy for enhanced plant growth and Cd-uptake potential of Zea mays in industrially contaminated and cadmium (Cd) spiked soil. A pot experiment was conducted by growing Z. mays seedlings either inoculated with B. pumilus or un-inoculated along with the application of 5 mM EDTA. Plants were exposed to two levels of Cd contamination for 45 days. An increase in Cd uptake was observed in Z. mays inoculated with B. pumilus followed by EDTA treatment as compared to non-inoculated and un-treated ones. Zea mays showed improved values with PMC approach for different growth parameters including root length (41%), shoot length (40%), fresh weight (59%), dry weight (49%), chlorophyll contents (49%), and relative water contents (30%). Higher tolerance index (117%) was observed for plants grown in soil spiked with 300 mg kg-1 Cd (S2). PMC application markedly enhanced Cd uptake potential of Z. mays up to 12% and 68.8%, respectively, in S1 and S2 soil. While the PMC application increased Cd accumulation capacity of Z. mays by 71.2% and 52.5% in S1 and S2 soil. The calculated bioaccumulation and translocation factor revealed that Z. mays possess Cd uptake potential, and this ability can be significantly enhanced with PMC application.
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Affiliation(s)
- Kashif Hayat
- Key Laboratory of Urban Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Faculty of Biological Sciences, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Saiqa Menhas
- Key Laboratory of Urban Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Faculty of Biological Sciences, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Jochen Bundschuh
- Faculty of Health, Engineering and Sciences, University of Southern Queensland, Toowoomba, Australia
- School of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba, Australia
| | - Pei Zhou
- Key Laboratory of Urban Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Nabeel Khan Niazi
- School of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba, Australia
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Amjad Hussain
- Faculty of Biological Sciences, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Sikandar Hayat
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
| | - Hazrat Ali
- Green & Environmental Chemistry, Ecotoxicology and Ecology Laboratory, Department of Zoology, University of Malakand, Khyber Pakhtunkhwa, Pakistan
| | - Juncai Wang
- Key Laboratory of Urban Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Amir Abdullah Khan
- Faculty of Biological Sciences, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
- Department of Plant Biology and Ecology, Nankai University, Tianjin, China
| | - Amjad Ali
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
| | - Farooq Hussain Munis
- Faculty of Biological Sciences, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Hassan Javed Chaudhary
- Faculty of Biological Sciences, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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11
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Alzahrani Y, Rady MM. Compared to antioxidants and polyamines, the role of maize grain-derived organic biostimulants in improving cadmium tolerance in wheat plants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 182:109378. [PMID: 31254855 DOI: 10.1016/j.ecoenv.2019.109378] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 06/07/2019] [Accepted: 06/20/2019] [Indexed: 05/07/2023]
Abstract
Recently, the strategy of seed soaking has been successfully applied using extracts from different plant parts for healthy growth of plant under different environmental stresses. Compared to antioxidants like ascorbic acid (AsA) and glutathione (GSH) or polyamines (PAs) like spermine (SPM), spermidine (SPD), and putrescine (PUT), the effects of seed soaking using maize grain extract (MGE) on the biomass, productivity, phytohormones, and antioxidant defense system and its different components were examined with Cd2+-stressed wheat plants. In a preliminary study, seed soaking using AsA + GSH or PUT + SPD + SPM was more effective in increasing shoot fresh and dry weights, SPAD chlorophyll, and grain yield, and reducing malondialdehyde (MDA) content than individuals. In addition, MGE at 2% was more efficient than other concentrations. Therefore, they were selected for the main study. In the main study, compared to the control, seed soaking in AsA + GSH, PUT + SPD + SPM or MGE had positive effects on plant growth, yield, photosynthetic efficiency, contents and redox states of AsA and GSH, contents of PAs and plant hormones to varying degrees. Proline content and its metabolism enzymes activity, contents of soluble protein, N-compounds, soluble sugars, and α-tocopherol (α-TOC), and activities of antioxidant enzymes were not affected. However, contents of MDA and hydrogen peroxide (H2O2) were significantly reduced under normal conditions. Under Cd2+ stress (1.2 mM), along with the detrimental increases in the contents of MDA, H2O2 and Cd2+, contents of N-compounds, soluble sugars, proline content and its metabolism enzymes activities, AsA and GSH and their redox states, and polyamines, and activities of antioxidant enzymes were increased. In contrast, plant growth and yield, photosynthetic efficiency, soluble protein, and plant hormones were significantly reduced compared to the control. However, all of these attributes were significantly improved to varying degrees along with reduced contents of Cd2+, MDA, and H2O2 by seed soaking in AsA + GSH, PUT + SPD + SPM or MGE compared to the Cd2+-stressed control. Compared to AsA + GSH or PUT + SPD + SPM, seed soaking in MGE at 2% conferred the best results. Therefore, it is recommended to soak wheat seeds using MGE to improve plant growth and productivity by restricting the inhibitory influences of oxidative stress induced by Cd2+ stress.
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Affiliation(s)
- Yahya Alzahrani
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
| | - Mostafa M Rady
- Botany Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514, Egypt.
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12
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Liang Y, Zhou C, Guo Z, Huang Z, Peng C, Zeng P, Xiao X, Xian Z. Removal of cadmium, lead, and zinc from multi-metal-contaminated soil using chelate-assisted Sedum alfredii Hance. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:28319-28327. [PMID: 31372951 DOI: 10.1007/s11356-019-06041-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Biodegradable chelator-assisted phytoextraction is an effective method to enhance remediation efficiency of heavy metals. A greenhouse experiment was conducted to investigate the effects of S,S-ethylenediamine disuccinic acid (EDDS), citric acid (CA), and oxalic acid (OA) application before planting on the biomass and physiological characteristics of hyperaccumulator Sedum alfredii Hance, and its cadmium (Cd), lead (Pb), and zinc (Zn) uptake. The results showed that EDDS and CA slightly inhibited the plant growth, while the 1.0 mmol kg-1 (OA-1) and 2.5 mmol kg-1 OA (OA-2.5) addition produced 55.3% and 35.2% greater shoot biomass compared with the control, which may be related to that OA can produce higher leaf chlorophyll and soluble protein contents, as well as lower concentrations of malondialdehyde. At the same time, the concentrations of Pb and Zn in leaf after OA-2.5 treatment significantly increased by 127% and 28.4%, and the Cd, Pb, and Zn uptake by shoot was obviously enhanced by 21.5%, 117%, and 44.9% for OA-1 addition and by 39.1%, 80.0%, and 58.3% for OA-2.5 addition, respectively, in comparison with the control (P < 0.05). The reductions in available contents of Cd, Pb, and Zn in soil were observed after phytoextraction by Sedum alfredii Hance when OA was treated. These findings imply that OA was suitable for facilitating Sedum alfredii Hance to remove Cd, Pb, and Zn in co-contaminated soil.
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Affiliation(s)
- Yuqin Liang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Cong Zhou
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Zhaohui Guo
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Zhongting Huang
- Hunan Province Environmental Monitoring Centre, Changsha, 410004, China
| | - Chi Peng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Peng Zeng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Xiyuan Xiao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - Zhenfen Xian
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
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13
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Anwar S, Khan S, Hussain I, Bashir R, Fahad S. Chelators induced uptake of cadmium and modulation of water relation, antioxidants, and photosynthetic traits of maize. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:17577-17590. [PMID: 31020535 DOI: 10.1007/s11356-019-05170-6] [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: 01/25/2019] [Accepted: 04/11/2019] [Indexed: 06/09/2023]
Abstract
The present study was aimed to reveal the effect of cadmium (Cd)-polluted soil on the activation of antioxidant enzymes, photosynthesis, pigments, water relation, and other biochemical traits and comparative effect of synthetic and organic chelators. A pot experiment was conducted using two maize varieties grown in Cd-contaminated (15 and 30 mg kg-1) soil and chelators (1 mM EDTA, and 1 mM citric acid). Cd decreased biomass and photosynthetic traits while increased malondialdehyde (MDA) contents, total proteins, and antioxidant enzyme activities. Addition of EDTA enhanced Cd uptake, antioxidative enzyme, and total proteins; however, it reduced the water, osmotic, and turgor potential as compared to Cd alone. Addition of citric acid has lessened the antioxidant enzyme activities and MDA contents and enhanced the plant biomass as compared to Cd alone. Increases in antioxidants and MDA content were found to be positively related to the Cd contents in shoot and root. The application of citric acid significantly alleviated the Cd-induced toxic effects, showing remarkable improvement in biomass. These results indicated that EDTA was more effective for mobilizing Cd from soil to the root and shoot than citric acid; however, the physiological traits and plant biomass were more strongly inhibited by EDTA than by the Cd. Our study implies that citric acid ameliorated the negative effect of Cd on physiological traits and biomass, and hence could be used effectively for Cd phytoextraction.
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Affiliation(s)
- Sumera Anwar
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China.
- Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan.
| | - Shahbaz Khan
- College of Agriculture, Shanxi Agricultural University, Taigu, China
| | - Iqbal Hussain
- Department of Botany, Government College University, Faisalabad, Pakistan
| | - Rohina Bashir
- Department of Botany, Government College University, Faisalabad, Pakistan
| | - Shah Fahad
- Department of Agriculture, University of Swabi, Khyber Pakhtunkhwa, Amber, Pakistan
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14
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Li X, Zhang X, Wang X, Yang X, Cui Z. Bioaugmentation-assisted phytoremediation of lead and salinity co-contaminated soil by Suaeda salsa and Trichoderma asperellum. CHEMOSPHERE 2019; 224:716-725. [PMID: 30851523 DOI: 10.1016/j.chemosphere.2019.02.184] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 02/21/2019] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
The combined application of plant Suaeda salsa and indigenous fungus Trichoderma asperellum on the treatment of a lead (Pb) and salinity (Na+ and Ca2+) co-contaminated soil was investigated by a flowerpot experiment. As demonstrated by plant growth and selected antioxidant parameters, S. salsa was able to tolerate and grow in the co-contaminated soil, especially bioaugmented with T. asperellum, which promoted plant growth (9-23% and 5-13% increases for plant height and fresh weight, respectively) and appeared to alleviate plant oxidative damage (7-85% and 7-49% decreases for plant malondialdehyde and peroxidase levels, respectively). The SDS-PAGE fingerprints indicated that the total protein contents of S. salsa were affected under Pb and salinity stresses. The interactions of Na+ and Ca2+ ions on the phytotoxicity of Pb remained hormesis phenomenon that low-dose alleviation and high-dose enhancement. The analysis of phytoextraction parameters and bioavailability demonstrated that Pb was mainly concentrated in plant roots and poorly translocated, indicating the phytostabilization served as a major repair pathway. On the contrary, the Na+ and Ca2+ ions were concentrated in plant by the following order: shoot > root. Moreover, bioaugmentation of planted soil with T. asperellum generally led to the 9-42%, 13-58%, and 19-30% decreases of plant Pb, Na+, and Ca2+ concentrations and translocations, respectively, as well as a 6-21% decrease of soil Pb bioavailability. This study provided a bioaugmentation-assisted phytoremediation technique to make up the deficiencies of the long-term remediation for heavy metals and salinity.
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Affiliation(s)
- Xinxin Li
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Xu Zhang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Xinlei Wang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Xiaoyong Yang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Zhaojie Cui
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China.
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15
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Tang C, Zhang R, Hu X, Song J, Li B, Ou D, Hu X, Zhao Y. Exogenous spermidine elevating cadmium tolerance in Salix matsudana involves cadmium detoxification and antioxidant defense. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:305-315. [PMID: 30648425 DOI: 10.1080/15226514.2018.1524829] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 08/25/2018] [Accepted: 08/27/2018] [Indexed: 06/09/2023]
Abstract
In this study, exogenous spermidine role on Salix matsudana tolerance to cadmium was evaluated. Spermidine and cadmium presented antagonistic effects on the biomass, copper and zinc concentrations in S. matsudana. cadmium mainly distributed in the cell wall of subcellular fraction; 46.97%-60.43% of cadmium existed in a sodium chloride-extracted form. Cadmium contents in roots, leaves, and twigs ranged from 2002.67 to 3961.00, 111.59 to 229.72, and 102.56 to 221.27 mg/kg, respectively. Spermidine application elevated cadmium concentrations in the roots, cuttings, and cell wall and the ratio of deionized water-extracted cadmium, but decreased cadmium levels in the twigs and leaves and the fractions of cadmium extracted by ethanol and sodium chloride, respectively. Putrescine and malondialdehyde were important indicators of cadmium-induced oxidative damage. Exogenous spermidine alleviated the accumulation of superoxide anion, hydrogen peroxide, malondialdehyde via promoting the levels of spermidine, soluble protein, superoxide dismutase, reductive ascorbate, glutathione reductase, and glutathione peroxidase in S. matsudana leaves under the corresponding cadmium stress. The results indicated that S. matsudana was a candidate for cadmium rhizoremediation and extraction in leaves; the spermidine application enhanced the cadmium tolerance of S. matsudana through promoting cadmium accumulation in roots, cell wall, and less bioactive chemical forms and the antioxidative ability.
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Affiliation(s)
- Chunfang Tang
- a College of Environmental Science and Engineering , Central South University of Forestry and Technology , Changsha , China
| | - Riqing Zhang
- b College of Forestry , Central South University of Forestry and Technology , Changsha , China
| | - Xinjiang Hu
- a College of Environmental Science and Engineering , Central South University of Forestry and Technology , Changsha , China
- c College of Life Science and Technology , Central South University of Forestry and Technology , Changsha , China
| | - Jinfeng Song
- a College of Environmental Science and Engineering , Central South University of Forestry and Technology , Changsha , China
| | - Bing Li
- a College of Environmental Science and Engineering , Central South University of Forestry and Technology , Changsha , China
| | - Danling Ou
- a College of Environmental Science and Engineering , Central South University of Forestry and Technology , Changsha , China
| | - Xi Hu
- a College of Environmental Science and Engineering , Central South University of Forestry and Technology , Changsha , China
| | - Yunlin Zhao
- c College of Life Science and Technology , Central South University of Forestry and Technology , Changsha , China
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16
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Noman A, Aqeel M. miRNA-based heavy metal homeostasis and plant growth. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:10068-10082. [PMID: 28229383 DOI: 10.1007/s11356-017-8593-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 02/07/2017] [Indexed: 05/27/2023]
Abstract
Plants have been naturally gifted with mechanisms to adjust under very high or low nutrient concentrations. Heavy metal toxicity is considered as a major growth and yield-limiting factor for plants. This stress includes essential as well as non-essential metals. MicroRNAs (miRNAs) are known for mediating post-transcriptional regulation by cleaving transcripts or translational inhibition. It is commonly agreed that an extensive understanding of plant miRNAs will significantly help in the induction of tolerance against environmental stresses. With the introduction of the latest technology like next generation sequencing (NGS), a growing figure of miRNAs has been productively recognized in several plants for their diverse roles. These miRNAs are well-known modulators of plant responses to heavy metal (HM) stress. Data regarding metal-responsive miRNAs point out the vital role of plant miRNAs in supplementing metal detoxification by means of transcription factors (TF) or gene regulation. Acting as systemic signals, miRNAs also synchronize different physiological processes for plant responses to metal toxicities. In contrast to practicing techniques, using miRNA is a greatly helpful, pragmatic, and feasible approach. The earlier findings point towards miRNAs as a prospective target to engineer heavy metal tolerance in plants. Therefore, there is a need to augment our knowledge about the orchestrated functions of miRNAs during HM stress. We reviewed the deterministic significance of plant miRNAs in heavy metal tolerance and their role in mediating plant responses to HM toxicities. This review also summarized the topical developments by identification and validation of different metal stress-responsive miRNAs.
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Affiliation(s)
- Ali Noman
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian Province, People's Republic of China.
| | - Muhammad Aqeel
- School of Life Sciences, Lanzhou University, Lanzhou, People's Republic of China
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