The effects of selenium biofortification on mercury bioavailability and toxicity in the lettuce-slug food chain

Kavčič, Anja; Budič, Bojan; Vogel‐Mikuš, Katarina

doi:10.1016/j.fct.2019.110939

Cited by 10 publications

(5 citation statements)

References 58 publications

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“…In the available literature, there is no information on the effect of Fe on the maximum quantum yield of PS II. However, it is worth mentioning that in the studies of other authors, the biofortification of various vegetable species with iodine did not affect the Fv/Fm value [ 42 , 43 ]. Based on present research, it can be assumed, taking into account the downward trend in biomass production, that with the increase in the concentration of iron, the potential stress of plants could increase.…”

Section: Discussionmentioning

confidence: 93%

Microgreens Biometric and Fluorescence Response to Iron (Fe) Biofortification

Frąszczak

Kleiber

2022

IJMS

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Microgreens are foods with high nutritional value, which can be further enhanced with biofortification. Crop biofortification involves increasing the accumulation of target nutrients in edible plant tissues through fertilization or other factors. The purpose of the present study was to evaluate the potential for biofortification of some vegetable microgreens through iron (Fe) enrichment. The effect of nutrient solution supplemented with iron chelate (1.5, 3.0 mg/L) on the plant’s growth and mineral concentration of purple kohlrabi, radish, pea, and spinach microgreens was studied. Increasing the concentration of Fe in the medium increased the Fe content in the leaves of the species under study, except for radish. Significant interactions were observed between Fe and other microelements (Mn, Zn, and Cu) content in the shoots. With the increase in the intensity of supplementation with Fe, regardless of the species, the uptake of zinc and copper decreased. However, the species examined suggested that the response to Fe enrichment was species-specific. The application of Fe didn’t influence plant height or fresh and dry weight. The chlorophyll content index (CCI) was different among species. With increasing fertilisation intensity, a reduction in CCI only in peas resulted. A higher dose of iron in the medium increased the fluorescence yield of spinach and pea microgreens. In conclusion, the tested species, especially spinach and pea, grown in soilless systems are good targets to produce high-quality Fe biofortified microgreens.

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Section: Discussionmentioning

confidence: 93%

Microgreens Biometric and Fluorescence Response to Iron (Fe) Biofortification

Frąszczak

Kleiber

2022

IJMS

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“…Plants have the ability to alleviate these stresses using exogenous and endogenous anti-stressors or tools (through their defense system) such as plant growth-promoting rhizobacteria [167], silicon [168][169][170], nanoparticles of selenium, or silicon [171] and selenium [2]. Several studies have confirmed the identified role of Se in promoting cultivated plant growth under a variety of stresses [24,83,86,172,173]. There is a growing body of literature that shows the potential of Se-nanoparticles to promote plant growth under different conditions (Table 4), but this still needs more investigation, particularly under stressful conditions.…”

Section: Interaction Of Selenium and Nano-selenium With Environmental Conditionsmentioning

confidence: 99%

Selenium and Nano-Selenium Biofortification for Human Health: Opportunities and Challenges

et al. 2020

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Selenium is an essential micronutrient required for the health of humans and lower plants, but its importance for higher plants is still being investigated. The biological functions of Se related to human health revolve around its presence in 25 known selenoproteins (e.g., selenocysteine or the 21st amino acid). Humans may receive their required Se through plant uptake of soil Se, foods enriched in Se, or Se dietary supplements. Selenium nanoparticles (Se-NPs) have been applied to biofortified foods and feeds. Due to low toxicity and high efficiency, Se-NPs are used in applications such as cancer therapy and nano-medicines. Selenium and nano-selenium may be able to support and enhance the productivity of cultivated plants and animals under stressful conditions because they are antimicrobial and anti-carcinogenic agents, with antioxidant capacity and immune-modulatory efficacy. Thus, nano-selenium could be inserted in the feeds of fish and livestock to improvise stress resilience and productivity. This review offers new insights in Se and Se-NPs biofortification for edible plants and farm animals under stressful environments. Further, extensive research on Se-NPs is required to identify possible adverse effects on humans and their cytotoxicity.

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“…As illustrated in previous studies, , the Hg content in the roots of basil plants grown with the low-salinity effluents of shrimp aquaculture were 2–3 times those in the stems and leaves, but the roots, stems, and leaves of the lettuce plants had comparable Hg content (possibly due to considerably lower Hg levels at ∼0.016 mg/kg dry weight). While other researchers found that the Hg content in the lettuce roots was ∼18 times that in the stems and leaves . Thus, further analysis of Hg uptake by the edible parts and roots of the leafy vegetables at different growth periods is needed for exploring Hg uptake mechanisms.…”

Section: Resultsmentioning

confidence: 99%

“…As illustrated in previous studies, 22,23 While other researchers found that the Hg content in the lettuce roots was ∼18 times that in the stems and leaves. 50 Thus, further analysis of Hg uptake by the edible parts and roots of the leafy vegetables at different growth periods is needed for exploring Hg uptake mechanisms.…”

Section: Crossflow Filtration Performancementioning

confidence: 99%

Reclamation of Nutrient Solution from Membrane-Based Microalgal Harvesting Processes for Cultivation of Vegetables in Hydroponic Systems

et al. 2023

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This study investigates membrane-based microalgal harvesting processes for simultaneously concentrating microalgal cells and reclaiming liquid nutrients for cultivating vegetables in hydroponic systems. During both gravity-driven (with microfiltration and ultrafiltration membranes) and crossflow (with microfiltration membranes) filtration, it was found that cake layer fouling was predominant, regardless of microalgal solution properties, membrane type, and filtration condition. Although the gravity-driven membrane process offered lower operation cost, the water productivity was limited due to its lower fluxes (<1 L/m 2 h). During crossflow microfiltration of the microalgal solutions, increasing periodic water (50 °C) flushing frequency helped in alleviating both irreversible fouling and cake fouling development, especially with an extending filtration cycle. Under the same water productivity condition, optimal periodic water flushing (50 °C, 5 min duration per 15 min filtration) displayed more effectiveness in cake fouling control compared to periodic ultrasonication (60 s per 15 min filtration). As the collected permeate contained phosphorus and nitrogen, it was utilized as a potential cultivation solution to grow lettuce and basil in hydroponic systems. Both plants cultivated with the permeate grew slower than those with the commercial fertilizer solution, possibly associated with the lack of some essential microelements and possible uptake of certain heavy metals. The targeted hazard quotient (THQ) values of all examined heavy metals in the edible part (stem and leaves) of basil and lettuce were 0.79 and 1.58, respectively, and comparable to those with the fertilizer solution (0.81 for basil and 1.35 for lettuce). This implies that the basil cultivated with the reclaimed microalgal nutrient solution did not pose a potential adverse health effect on human consumption.

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The effects of selenium biofortification on mercury bioavailability and toxicity in the lettuce-slug food chain

Cited by 10 publications

References 58 publications

Microgreens Biometric and Fluorescence Response to Iron (Fe) Biofortification

Microgreens Biometric and Fluorescence Response to Iron (Fe) Biofortification

Selenium and Nano-Selenium Biofortification for Human Health: Opportunities and Challenges

Reclamation of Nutrient Solution from Membrane-Based Microalgal Harvesting Processes for Cultivation of Vegetables in Hydroponic Systems

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