Lead and Zinc Uptake and Toxicity in Maize and Their Management

Abedi, Tayebeh; Gavanji, Shahin; Mojiri, Amin

doi:10.3390/plants11151922

Cited by 37 publications

(32 citation statements)

References 158 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Among the possible means of degradation, the accumulation of metals, due to anthropogenic activities, stands out as one of the most harmful to human health [ 2 ]. In the agroecosystems, soil contamination through inappropriate practices, such as wastewater irrigation, the unsustainable use of pesticides and fertilizers, can induce the accumulation of metals [ 3 ] and their transfer to crops [ 4 ], creating a severe threat to the human food chain [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Soil Treatment with Nitric Oxide-Releasing Chitosan Nanoparticles Protects the Root System and Promotes the Growth of Soybean Plants under Copper Stress

Gomes

Debiasi

Pelegrino

et al. 2022

Plants

View full text Add to dashboard Cite

The nanoencapsulation of nitric oxide (NO) donors is an attractive technique to protect these molecules from rapid degradation, expanding, and enabling their use in agriculture. Here, we evaluated the effect of the soil application of chitosan nanoparticles containing S-nitroso-MSA (a S-nitrosothiol) on the protection of soybeans (Glycine max cv. BRS 257) against copper (Cu) stress. Soybeans were grown in a greenhouse in soil supplemented with 164 and 244 mg kg−1 Cu and treated with a free or nanoencapsulated NO donor at 1 mM, as well as with nanoparticles without NO. There were also soybean plants treated with distilled water and maintained in soil without Cu addition (control), and with Cu addition (water). The exogenous application of the nanoencapsulated and free S-nitroso-MSA improved the growth and promoted the maintenance of the photosynthetic activity in Cu-stressed plants. However, only the nanoencapsulated S-nitroso-MSA increased the bioavailability of NO in the roots, providing a more significant induction of the antioxidant activity, the attenuation of oxidative damage, and a greater capacity to mitigate the root nutritional imbalance triggered by Cu stress. The results suggest that the nanoencapsulation of the NO donors enables a more efficient delivery of NO for the protection of soybean plants under Cu stress.

show abstract

Section: Introductionmentioning

confidence: 99%

Soil Treatment with Nitric Oxide-Releasing Chitosan Nanoparticles Protects the Root System and Promotes the Growth of Soybean Plants under Copper Stress

Gomes

Debiasi

Pelegrino

et al. 2022

Plants

View full text Add to dashboard Cite

show abstract

“…Heavy metals are grouped into essential and non-essential classes. Essential metals, including Zn, are micronutrients but become toxic when taken in excess quantities [ 37 , 38 , 39 ]. Therefore, much attention has been paid to the development of various methods and technologies for cleaning and restoring zinc-contaminated areas, and among them is the phytoremediation method [ 13 ].…”

Section: Discussionmentioning

confidence: 99%

Effect of Zinc Excess in Substrate on Physiological Responses of Sinapis alba L.

Repkina

Nilova

Kaznina

2023

Plants

View full text Add to dashboard Cite

Zinc (Zn) is a fundamental micronutrient for plants’ metabolism, but in high concentrations, it is toxic. In this study, we investigated the physiological response of white mustard (Sinapis alba L. cv. Belgia) plants to the Zn excess concentrations (50, 100, and 150 mg kg−1) in the substrate. The results showed that sand Zn concentration of 50 mg kg−1 did not affect the physiological parameters of plants, despite to the high Zn accumulation in shoots. The growth, biomass accumulation, photosynthesis rate, and pigment amount were inhibited at Zn concentrations of 100 and 150 mg kg−1 in substrate. A slight increase in malondialdehyde (MDA) was also observed at zinc concentrations (100 and 150 mg kg−1) without changes in membrane permeability, which is partly connectedtoan increase in the proline content. The results suggested that white mustard tolerates Zn excess impact. S. alba is able to grow on Zn-contaminated substrates along with significant Zn accumulation in shoots, which supports its high potential for phytoremediation of Zn-polluted agricultural soils. It is also possible to propose the following recycling of white mustard plants for Zn fortification feedstuff.

show abstract

“…Lead stress negatively affects plant functioning ranging from seed germination to growth, physiological, biochemical, and molecular processes. − It negatively affects root growth, root number, and reduces water and nutrient uptake, therefore resulting in a substantial reduction in plant growth. − Further, it also causes inflated, abnormal, undersized, short roots with a higher number of secondary roots . High doses of Pb stress also decrease the photosynthetic rate, chlorophyll, plastoquinone, and carotenoid synthesis and damage the photosynthetic apparatus. − Besides this, Pb stress also stimulates the reactive oxygen species (ROS) production that damages the lipids, proteins, and membranes. − …”

Section: Introductionmentioning

confidence: 99%

Mitigation of Salinity Stress and Lead Toxicity in Maize by Exogenous Application of the Sorghum Water Extract

Rasool,

Alhaithloul,

Shahzad

et al. 2024

ACS Omega

View full text Add to dashboard Cite

The increased concentration of lead (Pb) in soils is a serious threat to human beings and plants all over the world. Salinity stress is also a major issue across the globe, which limits crop productivity. The use of allelochemicals has become an effective strategy to mitigate the toxic effects of abiotic stresses. Sorghum is an important crop grown across the globe, and it also possesses an appreciably allelopathic potential. Therefore, this study was planned to determine the impacts of the sorghum water extract (SWE) on improving maize growth under Pb and salinity stress. The experiment included different treatments; control, SWE (3%), and different levels of Pb and salinity stress; T 1 : control, T 2 : 50 mM NaCl, T 3 : 100 mM NaCl, T 4 : 250 μM Pb, and T 5 : 500 μM Pb. Lead and salinity stress reduced the maize growth by the genesis of reactive oxygen species (ROS), as evidenced by higher production of malondialdehyde (MDA: 39.1 and 32.28%) and hydrogen peroxide (H 2 O 2 : 20.62 and 17.81%). Spraying plants with SWE improved the maize growth by increasing antioxidant activities (ascorbate peroxidase: APX, catalase: CAT, peroxidase: POD and superoxide dismutase: SOD), photosynthetic pigments, relative water contents (RWC), osmolyte accumulation (proline, total soluble proteins: TSP, free amino acids: FAA), potassium accumulation, and decreasing MDA, H 2 O 2 , sodium, chloride, and Pb accumulation. In conclusion, the application of SWE mitigates adverse impacts of Pb and salinity stresses by improving chlorophyll synthesis and osmolyte accumulation, activating the antioxidant defense system, and preventing the entry of toxic ions.

show abstract

Lead and Zinc Uptake and Toxicity in Maize and Their Management

Cited by 37 publications

References 158 publications

Soil Treatment with Nitric Oxide-Releasing Chitosan Nanoparticles Protects the Root System and Promotes the Growth of Soybean Plants under Copper Stress

Soil Treatment with Nitric Oxide-Releasing Chitosan Nanoparticles Protects the Root System and Promotes the Growth of Soybean Plants under Copper Stress

Effect of Zinc Excess in Substrate on Physiological Responses of Sinapis alba L.

Mitigation of Salinity Stress and Lead Toxicity in Maize by Exogenous Application of the Sorghum Water Extract

Contact Info

Product

Resources

About