Curcumin, a Secondary Metabolite, Activates the Defense System by Regulating Water Status, PSII Photochemistry, and Antioxidant Capacity in Lactuca sativa Exposed to Lead and/or Arsenic Stresses

Food and Energy Security, Journal Year: 2025, Volume and Issue: 14(1)

Published: Jan. 1, 2025

ABSTRACT Lead (Pb) and arsenic (As) pollution seriously affect the physiological biochemical processes of plants, reduce agricultural productivity, pose a serious threat to human health. Recently, there has been an increasing interest in studies aimed at mitigating these negative effects heavy metals. Curcumin is important secondary metabolite belonging polyphenol class that provides stress tolerance plants through its metal‐chelating activity. Therefore, our study, curcumin (Cur1; 50 μM Cur2; 100 μM) was applied lettuce ( Lactuca sativa L.) under lead (Pb; and/or (As; stress. It observed relative growth rate plant decreased by 12% Pb 27% As combined conditions (Pb + As) reduced water content 23%. Notably, significant increases parameters were following treatment. Furthermore, exogenous application effectively mitigated detrimental induced heavy‐metal On gas exchange photosynthetic parameters, Cur1 treatment resulted more than twofold increase carbon assimilation conditions. Due exposure, H 2 O increased 25% TBARS twofold. These elevations attenuated with enhanced antioxidant enzyme Compared Cur2 treatments 40% 24% SOD activity, respectively. contributed maintenance redox balance cell activity ascorbate–glutathione (AsA‐GSH) cycle. In conclusion, applications reduction ROS accumulation uptake, photosynthesis efficiency, capacity. findings suggest phenolic compounds like could be promising strategy practices enhance resistance stress, thereby improving productivity.

Language: Английский

Unveiling mechanisms of silicon-mediated resistance to chromium stress in rice using a newly-developed hierarchical system

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 207, P. 108368 - 108368

Published: Jan. 12, 2024

Language: Английский

Revitalization of Soil Contaminated by Petroleum Products Using Materials That Improve the Physicochemical and Biochemical Properties of the Soil

Molecules, Journal Year: 2024, Volume and Issue: 29(24), P. 5838 - 5838

Published: Dec. 11, 2024

One of the key challenges in environmental protection is reclamation soils degraded by organic pollutants. Effective revitalization such can contribute to improving climate and quality feed food, mainly eliminating harmful substances from food chain cultivating plants for energy purposes. To this end, research was carried out using two sorbents, vermiculite agrobasalt, detoxify contaminated with diesel oil unleaded gasoline, maize as an crop. The a pot experiment. level soil contamination petroleum products set at 8 cm3 16 kg−1 d.m. soil, dose revitalizing substances, i.e., 10 g soil. Their effect compared uncontaminated without sorbents. obtained results prove that both gasoline disrupt growth development Zea mays. Diesel destabilized plant more than gasoline. Both distorted activity oxidoreductases hydrolases, stimulating inhibiting. applied sorbents proved be useful process, they reduced negative effects pollutants on mays, increased enzymes, enhanced value biochemical indicator (BA), improved cation exchange capacity (CEC), sum exchangeable base cations (EBC), pH, Corg content. Agrobasalt demonstrated greater potential physicochemical properties, inducing average increase CEC EBC values 12% 23%, respectively, under G pressure, 16% 25% DO-contaminated

Language: Английский