Lead toxicity in plants: Impacts and remediation

Zulfiqar, Usman; Farooq, Muhammad; Hussain, Saddam; Maqsood, Muhammad; Hussain, Mubshar; Ishfaq, Muhammad; Ahmad, Muhammad Sajid Aqeel; Anjum, Muhammad Zohaib

doi:10.1016/j.jenvman.2019.109557

Cited by 361 publications

(139 citation statements)

References 254 publications

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“…Generally, heavy metals dissolve easily in waterlogged soils. Pb was dissolved by acetic acid in highly impeded drainage soil (1.9 µg g −1 ) as compared to freely drained soils (0.1 µg g −1 ) in a region of slate bedrock [16].…”

Section: Soil Redox Potentialmentioning

confidence: 96%

“…Table 1 represents the various sources of lead contamination in agricultural soils, crops, and water in different countries/regions of the world. It is evidenced in Table 1 that the anthropogenic products and processes (such as industrial, oil-processing activities, agrochemicals, paint, smelting, mining, refining, informal recycling of lead, cosmetics, peeling window and door frames, jewelry, toys, ceramics, pottery, plumbing materials and alloys, water from old pipes, vinyl mini-blinds, stained glass, lead-glazed dishes, firearms with lead bullets, batteries, radiators for cars and trucks, and some colors of ink) are considered to be major sources of Pb contamination in the environment [14][15][16][17][18][19][20][21].…”

Section: Sources Of Pb Contamination In Soil Crops and Water Resourcesmentioning

confidence: 99%

“…In acidic soil (pH < 7), Pb exists as aqueous Pb(H 2 O 6 ) +2 , while in alkaline soil (pH > 7), Pb forms aqueous complexes with OH − (hydroxyl ions). Specific adsorption of Pb is directly proportional to soil pH [16,43]. At a low soil pH (3)(4)(5), adsorption is the dominant process, whereas at a high pH (6-7), precipitation is the dominant process [16,44].…”

Section: Soil Phmentioning

confidence: 99%

“…In Clay soils, heavy metal ions are adsorbed through ion exchange and specific adsorption mechanisms [45]. Pb adsorption also varies between types of clay minerals [16]. For example, the affinity between iolite and Pb is~32 times higher than montmorillonite [46].…”

Section: Soil Texturementioning

confidence: 99%

“…Soil minerals such as Mn and Fe affect Pb solubility in soils. Mn oxides have a high affinity towards Pb, thus they significantly decrease Pb uptake by plants grown in Pb contaminated soil [2,16,[48][49][50]. O'Reilly and Hochella [50] emphasized that microbial activity is responsible for Pb mobilization from oxides and carbonate.…”

Section: Soil Mineralsmentioning

confidence: 99%

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Lead Toxicity: Health Hazards, Influence on Food Chain, and Sustainable Remediation Approaches

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IJERPH

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Lead (Pb) toxicity has been a subject of interest for environmental scientists due to its toxic effect on plants, animals, and humans. An increase in several Pb related industrial activities and use of Pb containing products such as agrochemicals, oil and paint, mining, etc. can lead to Pb contamination in the environment and thereby, can enter the food chain. Being one of the most toxic heavy metals, Pb ingestion via the food chain has proven to be a potential health hazard for plants and humans. The current review aims to summarize the research updates on Pb toxicity and its effects on plants, soil, and human health. Relevant literature from the past 20 years encompassing comprehensive details on Pb toxicity has been considered with key issues such as i) Pb bioavailability in soil, ii) Pb biomagnification, and iii) Pb- remediation, which has been addressed in detail through physical, chemical, and biological lenses. In the review, among different Pb-remediation approaches, we have highlighted certain advanced approaches such as microbial assisted phytoremediation which could possibly minimize the Pb load from the resources in a sustainable manner and would be a viable option to ensure a safe food production system.

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Section: Soil Redox Potentialmentioning

confidence: 96%