Priming with gold nanoparticles leads to changes in the photosynthetic apparatus and improves the cold tolerance of wheat.

Autor: Venzhik Y; K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia. Electronic address: jul.venzhik@gmail.com., Deryabin A; K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia., Popov V; K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia., Dykman L; Institute of Biochemistry and Physiology of Plants and Microorganisms, Saratov Scientific Centre of the Russian Academy of Sciences, Saratov, Russia., Moshkov I; K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia.
Jazyk: angličtina
Zdroj: Plant physiology and biochemistry : PPB [Plant Physiol Biochem] 2022 Nov 01; Vol. 190, pp. 145-155. Date of Electronic Publication: 2022 Sep 13.
DOI: 10.1016/j.plaphy.2022.09.006
Abstrakt: Nanotechnologies provide a great platform for researching nanoparticles effects on living organisms including plants. This work shows the stimulating effect of seed priming with gold nanoparticles (AuNPs) on photosynthetic apparatus of Triticum aestivum seedlings. It was found using inductively coupled plasma-atomic emission and mass spectrometry that AuNPs (the average diameter of 15.3 nm, concentration of 20 μg ml -1 ) penetrated into the seeds, but were not found in seedling leaves. Ultrastructural changes in chloroplasts were found using transmission electron microscopy in plants grown from treated seeds: increases in the size of plastids, starch grains, grana in chloroplasts, and the number of thylakoids in grana. The intensity of photosynthesis, the content of chlorophylls, and the portion of unsaturated fatty acids in the composition of total leaf lipids were increased in treated AuNPs plants. This study demonstrates that revealed changes determined the increased tolerance of wheat to low temperature. The adaptive significance of these changes, possible mechanisms of the AuNPs effects on plants and future perspectives of study are discussed. This is the first report showing nanopriming with AuNPs as a new method to study the mechanisms of stress tolerance.
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.
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Databáze: MEDLINE
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