Heavy Metals Accumulation in Lettuce and Cherry
Tomatoes Cultivated in Cities

Pérez-Figueroa, Carolina Esther; Moreno, Raquel Salazar; Fitz-Rodríguez, E.; López‐Cruz, Irineo L.; Schmidt, Uwe; Dannehl, Dennis

doi:10.15244/pjoes/157316

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…The accumulation of As, Cd, Pb, and Zn was evaluated using the BCF to assess the impact of elevated contents of other TEs in the soil on the accumulation of individual TEs in the lettuce. Particularly noteworthy was the case of Cd, where the BCF was >1 in the lettuce of the control, indicating efficient Cd transport from the soil to the lettuce biomass [26,30,31]. On the other hand, the BCF of Cd in the lettuce of the multicontamination group was <1, indicating the influence of interactions with other TEs in the soil and their bioavailability.…”

Section: Impact Of Toxic Element Multicontamination On Growth and Mor...mentioning

confidence: 96%

Multicontamination Toxicity Evaluation in the Model Plant Lactuca sativa L.

Zemanová,

Lhotská,

Novák

et al. 2024

Plants

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Many contaminated soils contain several toxic elements (TEs) in elevated contents, and plant–TE interactions can differ from single TE contamination. Therefore, this study investigated the impact of combined contamination (As, Cd, Pb, Zn) on the physiological and metabolic processes of lettuce. After 45 days of exposure, TE excess in soil resulted in the inhibition of root and leaf biomass by 40 and 48%, respectively. Oxidative stress by TE accumulation was indicated by markers—malondialdehyde and 5-methylcytosine—and visible symptoms of toxicity (leaf chlorosis, root browning) and morpho-anatomical changes, which were related to the change in water regime (water potential decrease). An analysis of free amino acids (AAs) indicated that TEs disturbed N and C metabolism, especially in leaves, increasing the total content of free AAs and their families. Stress-induced senescence by TEs suggested changes in gas exchange parameters (increase in transpiration rate, stomatal conductance, and intercellular CO2 concentration), photosynthetic pigments (decrease in chlorophylls and carotenoids), a decrease in water use efficiency, and the maximum quantum yield of photosystem II. These results confirmed that the toxicity of combined contamination significantly affected the processes of lettuce by damaging the antioxidant system and expressing higher leaf sensitivity to TE multicontamination.

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Section: Impact Of Toxic Element Multicontamination On Growth and Mor...mentioning

confidence: 96%

Multicontamination Toxicity Evaluation in the Model Plant Lactuca sativa L.

Zemanová,

Lhotská,

Novák

et al. 2024

Plants

View full text Add to dashboard Cite

show abstract

“…Exposure to heavy metal contamination can lead to oxidative stress, ecological toxicity, plant toxicity, morphological and biochemical effects, and cellular toxicity in the living organisms [ 66 ]. Moreover, increased levels of heavy metals in humans have been associated with numerous health hazards, including lower IQ in children, developmental obstacles, cancers, hypertension, weakened immune systems, cellular toxicity, oxidative damage, heart diseases, coronary artery disease, cerebrovascular disorders, and miscarriages and stillbirths, among others [ 72 , 73 ]. Recent incidents such as the lead tap water crisis in Flint, Michigan, highlight the critical need to be prepared for potential widespread heavy metal contaminations and the associated health risks, social consequences, and post-traumatic stress disorders [ 74 , 75 ].…”

Section: Application Of Nanosensors For the Detection Of Heavy Metalsmentioning

confidence: 99%

Revisiting the Role of Sensors for Shaping Plant Research: Applications and Future Perspectives

Tyagi,

Mir,

Ali

2024

Sensors

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Plant health monitoring is essential for understanding the impact of environmental stressors (biotic and abiotic) on crop production, and for tailoring plant developmental and adaptive responses accordingly. Plants are constantly exposed to different stressors like pathogens and soil pollutants (heavy metals and pesticides) which pose a serious threat to their survival and to human health. Plants have the ability to respond to environmental stressors by undergoing rapid transcriptional, translational, and metabolic reprogramming at different cellular compartments in order to balance growth and adaptive responses. However, plants’ exceptional responsiveness to environmental cues is highly complex, which is driven by diverse signaling molecules such as calcium Ca2+, reactive oxygen species (ROS), hormones, small peptides and metabolites. Additionally, other factors like pH also influence these responses. The regulation and occurrence of these plant signaling molecules are often undetectable, necessitating nondestructive, live research approaches to understand their molecular complexity and functional traits during growth and stress conditions. With the advent of sensors, in vivo and in vitro understanding of some of these processes associated with plant physiology, signaling, metabolism, and development has provided a novel platform not only for decoding the biochemical complexity of signaling pathways but also for targeted engineering to improve diverse plant traits. The application of sensors in detecting pathogens and soil pollutants like heavy metal and pesticides plays a key role in protecting plant and human health. In this review, we provide an update on sensors used in plant biology for the detection of diverse signaling molecules and their functional attributes. We also discuss different types of sensors (biosensors and nanosensors) used in agriculture for detecting pesticides, pathogens and pollutants.

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“…Lettuce (Lactuca sativa) occupies one of the leading places among the most widely consumed leafy vegetables worldwide. However, lettuce can easily incur different abiotic stress factors such as water deficit, pathogens, salinity, soil contamination with heavy metals (HMs), and the presence of pharmaceutical products in soil [1][2][3][4][5][6]. Lettuce is considered a valuable model plant species for phytotoxicity studies that include both single and multi-contaminants [7].…”

Section: Introductionmentioning

confidence: 99%

Correlation of Elemental Transfer, Bioactive Compounds and Antioxidant Activity on Lactuca sativa L. Grown in Soil with Functionalized CNT and HMs

Soran,

Lung,

Stegarescu

et al. 2023

Metabolites

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While heavy metals (HM) have been considered in recent decades to be the most common and problematic pollutants, the expansion of the list of pollutants due to the active use of carbon nanotubes (CNT) raises new questions about the benefit and harm of HM released to nature individually or fixed on CNT walls. A pot experiment was conducted to compare the effect of two classes of potential pollutants—metal salts of Pb, Mn, Cu, Zn, Cd, and Ni; and functionalized CNTs with COOH, MnO2, Fe3O4, and MnO2-Fe3O4—applied in soil, on the elemental transfer, the bioactive compounds accumulation, and the antioxidant activity in lettuce. While CNTs mainly increased the elemental transfer from soil to leaves, HM salts strongly obstructed it. In the presence of CNTs, the antioxidant activity in lettuce leaves correlated with the transfer of elements from soil to root and from root to leaves. The excess of HMs in soil induced a greater variation of the polyphenols quantity and antioxidant activity than the excess of CNTs. It might be assumed that lettuce perceived HMs as a more aggressive stressor than CNTs and more strongly activated the defense mechanism, showing the reduction of the element transfer and enhancing of total polyphenol production and antioxidant activity.

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Heavy Metals Accumulation in Lettuce and Cherry Tomatoes Cultivated in Cities

Cited by 6 publications

References 41 publications

Multicontamination Toxicity Evaluation in the Model Plant Lactuca sativa L.

Multicontamination Toxicity Evaluation in the Model Plant Lactuca sativa L.

Revisiting the Role of Sensors for Shaping Plant Research: Applications and Future Perspectives

Correlation of Elemental Transfer, Bioactive Compounds and Antioxidant Activity on Lactuca sativa L. Grown in Soil with Functionalized CNT and HMs

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