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Delias DS, Da-Silva CJ, Martins AC, de Oliveira DSC, do Amarante L. Iron toxicity increases oxidative stress and impairs mineral accumulation and leaf gas exchange in soybean plants during hypoxia. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:22427-22438. [PMID: 34791629 DOI: 10.1007/s11356-021-17397-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
Iron toxicity is a major challenge faced by plants in hypoxic soils; however, the consequences of such combined stress for soybean (Glycine max) remain to be determined. Here we assessed the physiological responses of soybean plants exposed to hypoxia and a high concentration of iron. Soil-grown plants cultivated in a greenhouse until the vegetative stage were transferred to a hydroponic system containing nutrient solution and subjected to two oxygen conditions (normoxia (6.2 mg L-1) and hypoxia (0.33 mg L-1)) and two iron concentrations (Fe-EDTA) (0.09 and 1.8 mM) for 72 h. During hypoxia, high concentrations of iron in the nutrient solution resulted in increased iron accumulation in roots and leaves. Under this condition, the concentrations of zinc, nitrogen, potassium, and calcium decreased in the roots, while the concentration of nitrogen and magnesium decreased in the leaves. Additionally, during hypoxia, the higher concentration of iron led to an increase in the activity of the antioxidant enzymes in roots and leaves, while decreased the levels of the photosynthetic pigments, leaf gas exchange, and plant growth. In conclusion, high iron concentration in the root medium results in a considerably more severe damage condition to soybean plants under hypoxia compared to plants grown under low iron availability.
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Affiliation(s)
- Dominique S Delias
- Departamento de Botânica, Universidade Federal de Pelotas, Capão do Leão, 96160-000, Brazil
| | | | - Angelita C Martins
- Departamento de Botânica, Universidade Federal de Pelotas, Capão do Leão, 96160-000, Brazil
| | - Denise S C de Oliveira
- Departamento de Botânica, Universidade Federal de Pelotas, Capão do Leão, 96160-000, Brazil
| | - Luciano do Amarante
- Departamento de Botânica, Universidade Federal de Pelotas, Capão do Leão, 96160-000, Brazil
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Lv Y, Li Y, Liu X, Xu K. Effect of soil sulfamethoxazole on strawberry (Fragaria ananassa): Growth, health risks and silicon mitigation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 286:117321. [PMID: 33975211 DOI: 10.1016/j.envpol.2021.117321] [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: 01/19/2021] [Revised: 03/29/2021] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
The negative impact of antibiotic pollution on the agricultural system and human health is a hot issue in the world. However, little information is available on the antibiotics toxicity mechanism and the role of silicon (Si) to alleviate the antibiotics toxicity. In this study, strawberry (Fragaria ananassa) showed excitatory response to low-dose SMZ (1 mg L-1), but strawberry root and photosynthetic efficiency were damaged under high level. When SMZ level exceeded 10 mg L-1, H202, O2-, MDA and relative conductivity increased, while SOD and CAT activities first increased and then decreased. SMZ accumulated more in roots and fruits, but less in stems, and the accumulation increased with the increase of SMZ-dose. Under 1 mg L-1 SMZ, the SMZ accumulation in fruits was 110.54 μg kg-1, which exceeded the maximum residue limit. SMZ can induce the expression of sul1, sul2 and intI1, and intI1 had the highest abundance. Exogenous application of Si alleviated the toxicity of SMZ, which is mainly related to the degradation of SMZ in soil and the reduction of SMZ absorption by strawberry. In addition, Si relieved root damage, promoted the increase of photosynthetic efficiency, and improved the antioxidant system to resist SMZ toxicity.
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Affiliation(s)
- Yao Lv
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong Taian, 271018, China; Key Laboratory of Biology of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Taian, 271018, China; State Key Laboratory of Crop Biology, Taian, 271018, China
| | - Yanyan Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
| | - Xiaohui Liu
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Kun Xu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong Taian, 271018, China; Key Laboratory of Biology of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Taian, 271018, China; State Key Laboratory of Crop Biology, Taian, 271018, China.
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Shalaby TA, Abd-Alkarim E, El-Aidy F, Hamed ES, Sharaf-Eldin M, Taha N, El-Ramady H, Bayoumi Y, Dos Reis AR. Nano-selenium, silicon and H 2O 2 boost growth and productivity of cucumber under combined salinity and heat stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 212:111962. [PMID: 33550082 DOI: 10.1016/j.ecoenv.2021.111962] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 05/04/2023]
Abstract
The production of cucumber under combined salinity and heat stress is a crucial challenge facing many countries particularly in arid environments. This challenge could be controlled through exogenous foliar application of some bio-stimulants or anti-stressors. This study was carried out to investigate the management and improving cucumber production under combined salinity and heat stress. Nano-selenium (nano-Se, 25 mg L-1), silicon (Si, 200 mg L-1) and hydrogen peroxide (H2O2, 20 mmol L-1) were foliar applied on cucumber plants as anti-stress compounds. The results revealed that studied anti-stressors improved growth and productivity of cucumber grown in saline soil regardless the kind of anti-stressor under heat stress. The foliar application of nano-Se (25 mg L-1) clearly improved cucumber growth parameters (plant height and leaf area) compared to other anti-stressor and control. Foliar Si application showed the greatest impact on enzymatic antioxidant capacities among the other anti-stressor treatments. This applied rate of Si also showed the greatest increase in marketable fruit yield and yield quality (fruit firmness and total soluble solids) compared to untreated plants. These increases could be due to increasing nutrient uptake particularly N, P, K, and Mg, as well as Se (by 40.2% and 43%) in leaves and Si (by 11.2% and 22.1% in fruits) in both seasons, respectively. The potential role of Si in mitigating soil salinity under heat stress could be referred to high Si content found in leaf which regulates water losses via transpiration as well as high nutrient uptake of other nutrients (N, P, K, Mg and Se). The distinguished high K+ content found in cucumber leaves might help stressed plants to tolerate studied stresses by regulating the osmotic balance and controlling stomatal opening, which support cultivated plants to adapt to soil salinity under heat stress. Further studies are needed to be carried out concerning the different response of cultivated plants to combined stresses.
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Affiliation(s)
- Tarek A Shalaby
- Horticulture Department, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh 33516, Egypt; Department of Arid Land Agriculture, College of Agricultural and Food Science, King Faisal University, P.O. 400, Al-Ahsa 31982, Saudi Arabia
| | - Emad Abd-Alkarim
- Horticulture Department, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh 33516, Egypt
| | - Farouk El-Aidy
- Horticulture Department, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh 33516, Egypt
| | - El-Samahy Hamed
- Vegetable crops Department, Horticulture Institute, Agriculture Research Center, Giza, Egypt
| | - Mohamed Sharaf-Eldin
- Horticulture Department, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh 33516, Egypt
| | - Naglaa Taha
- Plant Pathology Research Institute, Agriculture Research Center, 12619 Giza, Egypt
| | - Hassan El-Ramady
- Soil and Water Dept., Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Yousry Bayoumi
- Horticulture Department, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh 33516, Egypt; Physiology & Breeding of Horticultural Crops Laboratory, Horticulture Dept., Faculty of Agriculture, Kafrelsheikh University, Egypt
| | - André Rodrigues Dos Reis
- Department of Biosystems Engineering, School of Sciences and Engineering, São Paulo State University (UNESP), Tupã-SP 17602-496, Brazil.
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Gaur S, Kumar J, Kumar D, Chauhan DK, Prasad SM, Srivastava PK. Fascinating impact of silicon and silicon transporters in plants: A review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 202:110885. [PMID: 32650140 DOI: 10.1016/j.ecoenv.2020.110885] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 05/06/2023]
Abstract
Silicon (Si) is a metalloid which is gaining worldwide attention of plant scientists due to its ameliorating impact on plants' growth and development. The beneficial response of Si is observed predominantly under numerous abiotic and biotic stress conditions. However, under favorable conditions, most of the plant can grow without it. Therefore, Si has yet not been fully accepted as essential element rather it is being considered as quasi-essential for plants' growth. Si is also known to enhance resilience in plants by reducing the plant's stress. Besides its second most abundance on the earth crust, most of the soils lack plant available form of Si i.e. silicic acid. In this regard, understanding the role of Si in plant metabolism, its uptake from roots and transport to aerial tissues along with its ionomics and proteomics under different circumstances is of great concern. Plants have evolved a well-optimized Si-transport system including various transporter proteins like Low silicon1 (Lsi1), Low silicon2 (Lsi2), Low silicon3 (Lsi3) and Low silicon6 (Lsi6) at specific sub-cellular locations along with the expression profiling that creates precisely coordinated network among these transporters, which also facilitate uptake and accumulation of Si. Though, an ample amount of information is available pertinent to the solute specificity, active sites, transcriptional and post-transcriptional regulation of these transporter genes. Similarly, the information regarding transporters involved in Si accumulation in different organelles is also available particularly in silica cells occurred in poales. But in this review, we have attempted to compile studies related to plants vis à vis Si, its role in abiotic and biotic stress, its uptake in various parts of plants via different types of Si-transporters, expression pattern, localization and the solute specificity. Besides these, this review will also provide the compiled knowledge about the genetic variation among crop plants vis à vis enhanced Si uptake and related benefits.
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Affiliation(s)
- Shweta Gaur
- DD Pant Interdisciplinary Research Laboratory, Department of Botany, University of Allahabad, Prayagraj, U.P, 211002, India.
| | - Jitendra Kumar
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad, Prayagraj, U.P, 211002, India; Institute of Engineering and Technology, Dr. Shakuntla Misra National Rehabilitation University, Mohaan Road, Lucknow, U.P, 226017, India.
| | - Dharmendra Kumar
- DD Pant Interdisciplinary Research Laboratory, Department of Botany, University of Allahabad, Prayagraj, U.P, 211002, India
| | - Devendra Kumar Chauhan
- DD Pant Interdisciplinary Research Laboratory, Department of Botany, University of Allahabad, Prayagraj, U.P, 211002, India.
| | - Sheo Mohan Prasad
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad, Prayagraj, U.P, 211002, India.
| | - Prabhat Kumar Srivastava
- Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad, Prayagraj, U.P, 211002, India; Department of Botany, KS Saket PG College, Ayodhya U.P, 224123., India.
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