Name
Golubev Alexander Andreevich
Scholastic degree
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Academic rank
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Honorary rank
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Organization, job position
Institute of Biochemistry and Physiology of Plants and Microorganisms
Web site url
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Articles count: 1
The article presents experimental data on the research
of gold nanoparticles (GNPs) with mean diameter 15
nm and 50 nm effect on seeds germination and growth
of 3-day-old etiolated coleoptiles and roots. Compared
with distilled water (control) initial colloidal solution
of 15 nm and 50 nm GNPs (57 µg/ml) had no
significant impact on seeds germination and growth of
coleoptiles and roots. However, in both cases a weak
tendency to stimulation of the coleoptile growth and
root growth inhibition was observed. Reduction of 15
nm GNPs concentration down to 10 µg/ml and 1
µg/ml had not effect on the growth of the seedlings,
but stimulated seed germination up to twofold.
Similar concentrations of 50 nm GNPs exerted the
stimulating effect on seed germination (twofold) and
the growth of root and coleoptiles. Seedlings grew
especially intensive in colloidal GNPs solution with
Au concentration of 10 µg/ml. Temperature rise of 2
degrees (from 25°C to 27°C) resulted in growth
increase of control 3-day-old seedlings and opposite
effect of 50 nm GNPs: coleoptiles and roots growth
fell behind control seedlings growth by 16-17%.
However, on the 4th day, the relative growth
slowdown of control seedlings occurred at 27°C and
growth stimulation effect under the influence of 50
nm GNPs appeared again. Over time, the stimulating
effect of 50 nm GNPs decreased: at the end of October it weakened, and in November – beginning of
December, it was no observed for the roots, and there
was a decline in coleoptiles growth. However, in all
cases the effect of stimulation of seeds germination
persisted under the influence of 50 nm GNPs,
weakening by December. We hypothesize the
molecular mechanisms of biological action of GNPs