Melatonin enhances metal oxide nanoparticles tolerance in rice seedlings through dual regulation of antioxidant defense and photosynthetic efficiency DOI
Ahmed Gharib, Yanze Su, Zhihao Zuo

et al.

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(6)

Published: Nov. 1, 2024

The growing utilization of metal oxide nanoparticles (MONPs) presents novel and potential hazards to plants. However, the impacts MONPs on plants mechanisms underlying their tolerance remain unclear. In this study, we demonstrated that both CuO ZnO hindered plant growth triggered oxidative damage in rice seedlings. role melatonin was elucidated through a comprehensive analysis OsCOMT mutant overexpression plants, which showed deficiency sufficiency, respectively. Our results revealed melatonin-deficient exhibited hypersensitivity MONPs, while melatonin-sufficient enhanced tolerance. Physiological assessments further indicated counteracted by increasing activities antioxidative enzymes, including superoxide dismutase, peroxidase, catalase, glutathione reductase. Moreover, found foster under MONP stress positively regulating maximum photochemical efficiency, reducing non-photochemical fluorescence quenching, promoting biosynthesis sucrose starch. These findings not only highlight hazardous effects but also underscore pivotal bolstering resilience against MONPs.

Language: Английский

A Review of Visible-Light-Active Zinc Oxide Photocatalysts for Environmental Application DOI Open Access

Alishay Baig,

Mohsin Siddique, Sandeep Panchal

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(2), P. 100 - 100

Published: Jan. 22, 2025

Zinc oxide (ZnO) photocatalysts have emerged as a promising material for environmental and energy applications due to their exceptional photocatalytic properties. Initially recognized efficiency under ultraviolet (UV) light, recent advancements focused on enhancing ZnO’s visible light activity (VLA) address its inherent limitations. This review provides an overview of structure, electronic properties, mechanisms. Various strategies modifying ZnO harness including metal non-metal doping, dye sensitization, semiconductor coupling, are discussed. Special emphasis is placed the mechanisms behind absorption reactive oxygen species (ROS) generation, deduced through physicochemical photoelectrochemical analyses. The in remediation comprehensively explored, particularly water treatment, disinfection, air purification. degradation pollutants, persistent organic compounds, pharmaceuticals, dyes, pesticides, using reviewed compared with conventional UV-activated materials. underscores potential efficient sustainable solution

Language: Английский

Citations

5
Revisiting Water Adsorption on TiO2 and ZnO Surfaces: An SCC-DFTB Molecular Dynamics Study DOI Creative Commons
Yarkın A. Çetin, Laura Escorihuela, Benjamí Martorell

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(5), P. 4449 - 4457

Published: Feb. 2, 2025

Metal oxides (MOs) are the key materials in applications of biomedicine industrial technologies due to their versatile features. Knowing possible toxicity level is crucial given some specific environments, particularly water. We have learned that reactivity almost depends on electronic structure surface MOs. Thus, a detailed understanding and its processes useful for determining MOs defining good descriptive parameters. simulated interaction ZnO TiO2 slab models with water checked geometric changes from bulk material interface. To this end, we used density functional tight binding theory coupled finite temperature molecular dynamics. observed MO terms parameters several conditions, such as temperature, hydrogenated or clean, exposed surface. In doing so, provide molecular-level insights into topographical surfaces besides finding critical points can explain initialization dissolution processes. reveal information about potential descriptors systematic analysis approach.

Language: Английский

Citations

0
Distribution and dynamics for the ecological assessment of Asan Wetland through periphyton -a water quality indicator DOI Creative Commons

Sazia Tabassum,

C. B. Kotnala,

Anoop K. Dobriyal

et al.

Frontiers in Environmental Chemistry, Journal Year: 2025, Volume and Issue: 6

Published: Feb. 5, 2025

The Asan Wetland is an important freshwater wetland in Uttarakhand’s Dehradun district. It known for its diverse flora and fauna as a stopover migratory birds. Periphyton, essential biological component of aquatic ecosystems, serves bioindicator water quality ecosystem integrity. This study fills gap our knowledge the Wetland’s ecological health by analyzing periphyton populations number physicochemical characteristics across three selected sites from November 2021 to October 2023. Selected named Site 1(S1), 2(S2), 3 (S3). Monthly variations parameters such temperature, pH, turbidity, transparency, total dissolved solids (TDS), electrical conductivity, oxygen (DO), hardness, alkalinity, demand (BOD), chemical (COD), nutrients were collected, identified assessed using Ms-excel Past software. Phosphorus levels indicated moderate high nutrient load , peaking August ( 1.20–1.25 mg/L ) all dropping their lowest January 0.35–0.65 ). Nitrate moderate, with highest concentrations December 1.40–1.55 July 0.25–0.35 ), showing similar seasonal patterns sites. was represented this 18 different periphytic taxa that belong classes. These classes include Bacillariophyceae (Cymbella, Navicula, Nitzschia, Fragilaria Meridion, Synedra, Gomphonema, Tabellaria, Diatoma), members Chlorophyceae Ulothrix, Spirogyra, Cosmarium, Microspora, Chlorella, Oedogomium, Zygnema, Cladophora are, while Phormidium member Cyanophyceae. peak density (individuals/cm 2 recorded 322.67 ± 89.08 × 10 January, exhibiting maximum values at S3, minimum 5.57 10³ August. annual percentage composition over years indicates constituted predominant group (89%–90%), succeeded (7%–9%) Cyanophyceae or Myxophyceae (1%–4%) canonical correspondence analysis (CCA) among during both suggested S3 more diverse, followed S1 S2, 64.93%, 35.07% variance eigenvalues 0.01794, 0.00968 respectively. PCA PC1 PC2 93.98% 6.015% 279.149 17.8675, respectively multivariate cluster showed similarity 2-year study. findings emphasize need targeted management strategies maintain Wetland.

Language: Английский

Citations

0
Functionalization-dependent toxicity of MIL-101 metal-organic frameworks to phytoplankton Chlamydomonas reinhardtii DOI
Meiyu Wang, Bin Xia, Zhengguo Cui

et al.

Aquatic Toxicology, Journal Year: 2025, Volume and Issue: 285, P. 107421 - 107421

Published: May 21, 2025

Language: Английский

Citations

0
Melatonin enhances metal oxide nanoparticles tolerance in rice seedlings through dual regulation of antioxidant defense and photosynthetic efficiency DOI
Ahmed Gharib, Yanze Su, Zhihao Zuo

et al.

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(6)

Published: Nov. 1, 2024

The growing utilization of metal oxide nanoparticles (MONPs) presents novel and potential hazards to plants. However, the impacts MONPs on plants mechanisms underlying their tolerance remain unclear. In this study, we demonstrated that both CuO ZnO hindered plant growth triggered oxidative damage in rice seedlings. role melatonin was elucidated through a comprehensive analysis OsCOMT mutant overexpression plants, which showed deficiency sufficiency, respectively. Our results revealed melatonin-deficient exhibited hypersensitivity MONPs, while melatonin-sufficient enhanced tolerance. Physiological assessments further indicated counteracted by increasing activities antioxidative enzymes, including superoxide dismutase, peroxidase, catalase, glutathione reductase. Moreover, found foster under MONP stress positively regulating maximum photochemical efficiency, reducing non-photochemical fluorescence quenching, promoting biosynthesis sucrose starch. These findings not only highlight hazardous effects but also underscore pivotal bolstering resilience against MONPs.

Language: Английский

Citations

0