Comparative investigation on chemical and green synthesized titanium dioxide nanoparticles against chromium (VI) stress eliciting differential physiological, biochemical, and cellular attributes in Helianthus annuus L.

Autor: Kumar D; Department of Botany, University of Delhi, New Delhi 110007, Delhi, India., Mariyam S; Department of Botany, University of Delhi, New Delhi 110007, Delhi, India., Gupta KJ; National Institute for Plant Genome Research, New Delhi 110067, Delhi, India., Thiruvengadam M; Department of Applied Bioscience, College of Life and Environmental Sciences, Konkuk University, Seoul 05029, Republic of Korea., Sampatrao Ghodake G; Department of Biological and Environmental Science, Dongguk University-Seoul, Ilsandong-gu, Goyang-si 10326, Gyeonggi-do, Republic of Korea., Xing B; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, USA., Seth CS; Department of Botany, University of Delhi, New Delhi 110007, Delhi, India. Electronic address: csseth52@gmail.com.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2024 Jun 20; Vol. 930, pp. 172413. Date of Electronic Publication: 2024 Apr 16.
DOI: 10.1016/j.scitotenv.2024.172413
Abstrakt: Nanotechnology is a new scientific area that promotes unique concepts to comprehend the optimal mechanics of nanoparticles (NPs) in plants under heavy metal stress. The present investigation focuses on effects of synthetic and green synthesized titanium dioxide nanoparticles (TiO 2 NPs and gTiO 2 NPs) against Cr(VI). Green TiO 2 NPs have been produced from plant leaf extract (Ricinus communis L.). Synthesis was confirmed employing an array of optical spectroscopic and electron microscopic techniques. Chromium strongly accelerated H 2 O 2 and MDA productions by 227 % and 266 % at highest chromium concentration (60 mg/kg of soil), respectively, and also caused DNA damage, and decline in photosynthesis. Additionally, anomalies were observed in stomatal cells with gradual increment in chromium concentrations. Conversely, foliar applications of TiO 2 NPs and gTiO 2 NPs considerably mitigated chromium stress. Sunflower plants treated with modest amounts of green TiO 2 NPs had significantly better growth index compared to chemically synthesized ones. Principal component analysis highlighted the variations among photosynthetic attributes, oxidative stress markers, and antioxidant defense systems. Notably, gTiO 2 supplementation to the Cr(VI) strained plants minimized PC 3 production which is a rare report so far. Conclusively, gTiO 2 NPs have been identified to be promising nano-based nutrition resource for farming applications.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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