Heavy Metals in Vineyards and Orchard Soils

Brunetto, Gustavo; Ferreira, Paulo Ademar Avelar; Melo, G. W. B. de; Ceretta, Carlos Alberto; Toselli, Moreno

doi:10.1590/0100-29452017263

Cited by 36 publications

(30 citation statements)

References 61 publications

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“…High concentrations of heavy metals in plant may interfere with metabolic functions, including physiological and biochemical processes such as oxidative stress from production of reactive oxygen species (ROS), inhibition of photosynthesis, and respiration and degeneration of main cell organelles, even leading to death of plants [2,38,39]. Other specific response of plants to contact with heavy metals depends on the concentration and exposure to them, presenting some phytotoxicity traits as reduced growth (especially the root system is more affected), chlorosis and leaf necrosis followed by traces of senescence and abscission, which changes lead to lower nutrient uptake and interfere with the biomass acquired [40]. A visual symptom of metal toxicity to plant is presented in Figure 2.…”

Section: Plantmentioning

confidence: 99%

Phytoremediation of Polluted Waterbodies with Aquatic plants: Recent Progress on Heavy Metal and Organic Pollutants

Christian¹,

Beniah²

2019

Preprint

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Heavy metals and organic pollutants are ubiquitous environmental pollutants affecting the quality of soil, water and air. Over the past 5 decades, many strategies have been developed for the remediation of polluted water. Strategies involving aquatic plant use are preferable to conventional methods. In this study, an attempt was made to provide a brief review on recent progresses in research and practical applications of phytoremediation for water resources with the following objectives: (1) to discuss the toxicity of toxic chemicals pollution in water to plant, animals and human health (2) to summarise the physicochemical factors affecting removal of toxic chemicals such as heavy metals and organic contaminants in aqueous solutions by aquatic plants; (3) to summarise and compare the removal rates of heavy metals and organic contaminants in aqueous solutions by diverse aquatic plants; and (4) to summarise chemometric models for testing aquatic plant performance. More than 20 aquatic plants specie have been used extensively while duckweed (L. minor), water hyacinth (Eichhornia crassipes), water lettuce (P. stratiotes) are the most common. Overall, chemometrics for performance assessment reported include: Growth rate (GR), Growth rate inhibition (% Inhibition), Metal uptake (MU), translocation/transfer factor (TF), bioconcentration factor (BCF), Percent metal uptake (% MU), Removal capacity (RC) and Tolerance index (TI) while absorption rate have been studied using the sorption kinetics and isotherms models such as pseudo-first-order (PFO), pseudo-second-order (PSO), Freundlich, Langmuir and Temkin. Using modeling and interpretation of adsorption isotherms for performance assessment is particularly good and increases level of accuracy obtained from adsorption processes of contaminant on plant. Conclusion was drawn by highlighting the gap in knowledge and suggesting key future areas of research for scientists and policymakers.

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Section: Plantmentioning

confidence: 99%

Phytoremediation of Polluted Waterbodies with Aquatic plants: Recent Progress on Heavy Metal and Organic Pollutants

Christian¹,

Beniah²

2019

Preprint

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“…AgNO 3 is the salt of silver. As a heavy metal, it reportedly limits the apoplastic pathway and prevents the transfer of water into xylem, which is the first line of defense in plants to maintain survival against heavy metal stress (Chen et al, 2011;Gomes et al, 2012;Rucińska-Sobkowiak, 2016;Brunetto et al, 2017;Ricachenevsky et al, 2018;Nakamura and Grebe, 2018). As a result, thickening of Casparian strip and endodermis cell walls reduce the absorption and transfer of heavy metals to the shoots by limiting apoplastic pathway as well as providing a place for accumulation of these metals to avoid the transfer to the xylem and shoots (Gomes et al, 2011;Liu et al, 2018).…”

Section: Observation Of Roots Hypocotyls and Shoots Anatomymentioning

confidence: 99%

Effects of silver nitrate (AgNO3) on growth and anatomical structure of vegetative organs of liquorice (Glycyrrhiza glabra L.) under in vitro condition

et al. 2018

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Liquorice (Glycyrrhiza glabra L.) has been used worldwide as a medicine for a long time. In this research, the effect of silver nitrate (AgNO 3 ) as a growth regulator and anti-ethylene in in vitro culture was investigated on growth and anatomical structure of vegetative organs (root, hypocotyl, shoot, leaf) as well as the number of stomata and trichomes in the leaves of liquorice under vitro culture condition. The seeds were cultured in MS culture media containing different concentrations of AgNO 3 (0, 2, 4, 8, and 10 mg L -1 ). Investigations on 20-day seedlings after three replications showed a significant increase in length and growth of roots, hypocotyls and shoots, and decreased number of stomata and trichomes in the samples treated with AgNO 3 (P≤0.05). The effects of AgNO 3 on anatomical structures of the organs included the increased cell division in root and shoot tips, reduced vascular tissues and sclerenchyma-fiber (with lignified cell walls), increased thickness of Casparian strip and cell walls of endodermis, reduced thickness of epidermis and increased intercellular spaces in mesophyll. The leaf area was measured in the 4-month plantlets, showing a significant increase in the samples treated with AgNO 3 . Furthermore, there was significant difference in increased leaf area applying 10 mg L -1 treatment and other concentrations as well as between the concentrations of 2 and 8 mg L -1 . It seems that these results are due to the inhibitory effects of AgNO 3 on the production and function of ethylene and the plant strategy to increase the tolerance against silver metal.

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“…Moreover, synthetic pesticide use has been clearly linked to human health concerns such as increased incidence of respiratory disease and cancer [27]. There are also limitations on the use of sulphur and copper-based fungicides, considered to be more natural fungicides, in organic systems because sulphur can act as a nose and eye irritant [28] and because heavy metals like copper accumulate in soils with intensive copper fungicide use over time, resulting in phytotoxicity [29]. These issues are driving the development of biofungicides (fungicides comprising biological control agents and/or natural products) that are suitable for both organic and conventional growers, considered safer in terms of human health and which provide an environmentally benign option for durable disease control.…”

Section: Introductionmentioning

confidence: 99%

Fungicidal Activity of Soybean Oil against Powdery Mildew on Wheat

Wurms¹,

Chee²,

Sutherland³

2019

Soybean - Biomass, Yield and Productivity

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Products derived from soybean crops are not only global food staples, but are also used in pharmaceuticals, industry, and agriculture. Soybean oil (SBO) and other oils are often used as adjuvants in agricultural sprays to facilitate spread of the active ingredient (a.i.) across the plant surface. This chapter describes original research in which a natural fungicide (biofungicide) was formulated using SBO as the a.i. Antimicrobial activity of SBO against a powdery mildew (PM) pathogen, Blumeria graminis f. sp. tritici, was measured, as well as effects on plant health and yield of wheat plants. Results were compared with a conventional fungicide and another lipid biofungicide. The mode of action was investigated using scanning electron microscopy. Results showed that SBO provided PM control equal to the conventional fungicide when plants were adequately spaced and caused collapse of fungal structures and extrusion of cell contents. Commercialisation potential of SBO biofungicide is discussed.

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Heavy Metals in Vineyards and Orchard Soils

Cited by 36 publications

References 61 publications

Phytoremediation of Polluted Waterbodies with Aquatic plants: Recent Progress on Heavy Metal and Organic Pollutants

Phytoremediation of Polluted Waterbodies with Aquatic plants: Recent Progress on Heavy Metal and Organic Pollutants

Effects of silver nitrate (AgNO3) on growth and anatomical structure of vegetative organs of liquorice (Glycyrrhiza glabra L.) under in vitro condition

Fungicidal Activity of Soybean Oil against Powdery Mildew on Wheat

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