Heavy metals uptake and translocation by lettuce and spinach grown on a metal-contaminated soil

Abstract

Nowadays, using sewage wastewaters in the irrigated agriculture is commune creating hazardous environment impacts. Assessment of these negative effects is vital issue to prevent heavy metals to be introduced in the food chain. Field and laboratory studies were conducted at Arab-El-Madabegh village, Assiut Governorate, Egypt, in order to evaluate the heavy metals concentrations in the edible parts of lettuce and spinach plants which irrigated with sewage water (SW). The obtained results indicated that, the soils of the studied site were contaminated by heavy metals. Zinc, Cu, Pb, Cd and Ni concentrations in the edible portions of the studied vegetables plants ranged between 75-110, 15 -17, 2 -5, 1.0 -3.5 and 1.0 -2.5 mg kg −1 , respectively. The obtained results showed that the concentrations of Zn, Pb, Cd and Ni in the edible parts of the studied plants were higher than the permissible limit levels but those of Cu were within the safe limit levels. It is worthy to mention that the irrigated edible vegetable crops with SW should be avoided. This study highlights the potential hazard for human health due to the uptake of high concentrations of heavy metals especially Zn, Ni, Cd and Pb by the studied vegetable crops .

Trace Metals Accumulated in Pea Plant (Pisum sativum L.) as a Result of Irrigation with Wastewater

“…Also, Cu causes oxidative stress by the generation of ROS, Cd causes also delaying in seed germination, and Pb strongly affects the morphology and physiology of seeds. This finding is supported by many studies (Ahmed and Slima 2018;Eissa and Negim 2018;Khalilzadeh et al 2020;Shehata and Galal 2020).…”

Long-Term Effect of Heavy Metal–Polluted Wastewater Irrigation on Physiological and Ecological Parameters of Salicornia europaea L.

“…Based on observed results in response to higher concentrations of Cu-, Cd-, Pb-, and Ni-treated plant, the higher diameter of the branched area, shoot length, and shoot weight may be due to the sufficiency of Fe and Zn in the wastewater. In general, the root-shoot transfer of Zn and Cu was higher than that of Cd, Pb, and Ni (Eissa and Negim 2018). The gradual supply of plants with Zn, Fe, and other heavy metals occurred when plants exposed to the average term duration of wastewater at the flowering stage.…”

Effect of Exogenously Applied Jasmonic Acid and Kinetin on Drought Tolerance of Wheat Cultivars Based on Morpho-Physiological Evaluation

“…Crop water deficit arises from inadequate rainfall besides the diminution of soil water potential during the growing period, which acts as a limiting factor to sustain high crop yield (Vadez et al 2012;Eissa 2014Eissa , 2016 Moreover, the predicted climate change and global warming will promote the occurrence of drought and consequently lessen the productivity of agriculture crops (Trenberth et al 2014;Eissa et al 2014;El-Mahdy et al 2018;Eissa and Negim 2018), a matter that makes drought stress an extremely serious issue. The drought influences plant growth and development via hampering crop growth rate, thus adversely impacting biomass acquisition (Damalas 2019); it also impacts plants' water potential and turgor, possibly interfering with normal functions, leading to changes in physiological and morphological traits (Lata et al 2011;Vurukonda et al 2016).…”