Heavy metal (loid)s phytotoxicity in crops and its mitigation through seed priming technology

Singhal, Rajesh Kumar; Kumar, Mahesh; Bose, Bandana; Mondal, Sananda; Srivastava, Sudhakar; Dhankher, Om Parkash; Tripathi, Rudra Deo

doi:10.1080/15226514.2022.2068502

Cited by 18 publications

(4 citation statements)

References 186 publications

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“…HMs play a significant role in plant growth and development, but when they exceed the prerequisite limit for normal plant growth, this exposure can lead to adverse morphological, metabolic, physiological, and molecular effects (Singhal et al, 2023). In this context, the current study investigated the possible effects of HMs on the germination and physiology of C. comosum seeds.…”

Section: Discussionmentioning

confidence: 99%

Effect of cadmium and lead on the morphology and protein profile of Calligonum comosum seeds

Alotaibi

2024

Front. Ecol. Evol.

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BackgroundSoils contaminated with heavy metals (HMs) pose a risk to human health via the food chain, as many edible plants absorb these metals. In turn, some of these plants could be used as phytoremediators for such soils. Calligonum comosum is an indigenous medicinal shrub that grows naturally in wide swaths of sandy soil in Saudi Arabia and has many advantages that render it a promising candidate for the treatment of HM-contaminated areas. But the impact of HM on this plant remains unknown, especially in the early stages of its development.ObjectiveThis investigation aimed to study the effects of lead (Pb) and cadmium (Cd) on the germination of C. comosum seeds under laboratory conditions, and assess the seeds’ response to these metals.MethodsThe C. comosum seed germination was monitored in Petri dishes containing Pb and Cd at increasing concentrations (25, 50, 75, and 100 µM) for up to 3 weeks. SDS-PAGE was used to examine the protein profile of germinated seeds and the western blot was used to assess the influence of HMs on the activities of the catalase enzyme and the beta subunit of ATP synthase (AtpB).ResultsThe germination rate and speed of C. comosum seeds were delayed by increasing concentrations of either Pb or Cd, but this effect was dose-dependent. SDS-PAGE analysis results revealed that exposure to both metals led to altered protein profiles as indicated by the resulting band intensities and disappearance of some proteins compared with the untreated controls. Further, the western blot analysis detected greater activity of catalase enzyme as well as AtpB in the Cd- and Pb-treated seeds.ConclusionC. comosum seeds treated with Cd or Pb enhance protein degradation and denaturation beside oxidative stress, leading to reduced seed viability. These results suggest oxidoreduction proteins and those involved in ATP synthesis are enhanced in C. comosum seeds in response to Cd and Pb stressors, which is a probable mechanism by which seeds may tolerate heavy metal stress.

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Section: Discussionmentioning

confidence: 99%

Effect of cadmium and lead on the morphology and protein profile of Calligonum comosum seeds

Alotaibi

2024

Front. Ecol. Evol.

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“…Iron excess in plants can displace cell redox balance into a pro‐oxidant state, which may produce cell death because of oxidative stress, reducing plant growth and crop productivity (Diedhiou et al, 2020). A high metal content in soil can lead to morphological, metabolic, physiological, and molecular aberration, such as chlorosis of leaves or enzymatic peroxidation of membranes (Singhal et al, 2022). However, no studies of iron uptake by crops has been carried out in the nearby intensive agricultural lands.…”

Section: Discussionmentioning

confidence: 99%

Monitoring sedimentary areas from mine waste products with Sentinel‐2 satellite images: A case study in theSEof Spain

Pereira

Alcalde-Aparicio

Ferrer-Juliá

et al. 2023

European J Soil Science

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Torrential rainfall regimes, among others, are the origin of accelerated soil erosion. The Spanish southeastern Mediterranean region is characterised by an arid climate regime affected by extreme erosion episodes with an important loss of sediments. Soil erosion effects are even more noticeable in areas where soil has been anthropically degraded, as in the mining district of Sierra Minera de Cartagena. The present research focuses on monitoring and mapping the changes in the sediment distribution of iron oxides and hydroxyl (OH−) bearing minerals caused by a cold drop known in Spanish as 'DANA' in September 2019 on the Rambla del Beal. This short rambla is fed by sediments from its drainage basin and by mining residues, irrigating a wide agricultural area. When discharges overflow the rambla channel, residues spread over its floodplain and reach the ecological protected coastal lagoon Mar Menor. The objective of the study was mapping the mineral distribution of the mining materials eroded from the source areas and sedimented in Rambla del Beal during a DANA. The study was carried out using a pre‐ and a post‐DANA image from the Sentinel‐2 satellite. After masking vegetation, urban areas and water bodies, different band ratios (B4/B3, B11/B12, B8A/B6) and a Spectral Angle Mapper (SAM) classification were applied. Sediment deposits were identified in wider areas after the DANA. Iron oxides increased their extension by 11.08% in the central area (B3/B4 with R2 of 0.84) and hydroxyl‐bearing minerals increased by 8.95% in the Rambla del Beal's headwaters (B11/B12 with R2 of 0.71). The SAM classification (with a 0.1 rad threshold and an overall accuracy of 87.33%) allowed the differentiation and classification of two ferric iron oxides (haematite and goethite) and one iron hydrous sulphate mineral (jarosite). Additionally, band ratio images were spatially overlaid with the soil land uses map layer of the cadastre in order to plot the land uses most affected by the transported sediments during the DANA. These results highlighted agricultural land as the areas (land uses) most affected by iron oxides deposition, as oxidation processes occur more rapidly in these areas. However, grassland and scrubland were the areas with the highest content of hydroxyl‐bearing minerals, as water is accumulated in these places, which favours hydrolysis reactions. Highlights Torrential events can relocate large volumes of contaminated sediments from former mining areas. Sentinel‐2 allows monitoring mine waste iron‐sulphate changes caused by weathering alteration. Spatial mineralogical pattern in sediments is controlled by geomorphology and flood dynamics. The proposed digital image analysis allows mapping short‐term evolution of mine waste sediments.

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“…So an alternative, practical, and affordable method called seed priming can increase the capacity of plants to withstand the effects of drought stress by promoting and advancing seed germination (Marthandan, et al, 2020). This method can also mitigate the phytotoxicity of metals and metalloids through strengthening antioxidant defense mechanism and seedling vigor during germination (Singhal et al, 2022). The bioaccumulation and bio magnification of these metal can be detrimental to living organism, soil as well as plant.…”

Section: Future Prospect Of Seed Primingmentioning

confidence: 99%

Seed Priming and Its Future Prospect: A Review

Dawadi,

Karki

2023

Review.food.agr.

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Production and productivity of crops is highly affected by uneven germination and poor crop establishment. The greater the germination percentage of the seed, the greater will be the productivity. Problems like low seed replacement rate, climate change, drought, low germination percentage, poor crop stand etc. are influencing the crop production. There might be the introduction of scientific tools and techniques in crop production like improved variety, resistance variety, etc. But each and every farmer is not capable and skilled enough to utilize advanced technology. In that case, seed priming can be a better alternative as well as a better solution to the problems. It is cost effective, ecofriendly and easily accessible to every farmer out there. It helps in better germination of seed, increases root vigor, improves crop establishment there by increasing yield. So, Seed priming has the capacity to close the gap between potential yield an actual yield.

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Heavy metal (loid)s phytotoxicity in crops and its mitigation through seed priming technology

Cited by 18 publications

References 186 publications

Effect of cadmium and lead on the morphology and protein profile of Calligonum comosum seeds

Effect of cadmium and lead on the morphology and protein profile of Calligonum comosum seeds

Monitoring sedimentary areas from mine waste products with Sentinel‐2 satellite images: A case study in theSEof Spain

Seed Priming and Its Future Prospect: A Review

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