Synthesis of positively charged hybrid PHMB-stabilized silver nanoparticles: the search for a new type of active substances used in plant protection products

Modern agriculture calls for a decrease in pesticide application, particularly in order to decrease the negative impact on the environment. Therefore the development of new active substances and plant protection products (PPP) to minimize the chemical load on ecosystems is a very important problem....

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Bibliographic Details
Published in:Materials research express 2017-07, Vol.4 (7), p.75018
Main Authors: Krutyakov, Yurii A, Kudrinsky, Alexey A, Gusev, Alexander A, Zakharova, Olga V, Klimov, Alexey I, Yapryntsev, Alexey D, Zherebin, Pavel M, Shapoval, Olga A, Lisichkin, Georgii V
Format: Article
Language:English
Subjects:
growth stimulators
peroxidase
plant protection products
polyhexamethylene biguanide hydrochloride (PHMB)
reactive oxygen species
silver nanoparticles
toxicity
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Summary:Modern agriculture calls for a decrease in pesticide application, particularly in order to decrease the negative impact on the environment. Therefore the development of new active substances and plant protection products (PPP) to minimize the chemical load on ecosystems is a very important problem. Substances based on silver nanoparticles are a promising solution of this problem because of the fact that in correct doses such products significantly increase yields and decrease crop diseases while displaying low toxicity to humans and animals. In this paper we for the first time propose application of polymeric guanidine compounds with varying chain lengths (from 10 to 130 elementary links) for the design and synthesis of modified silver nanoparticles to be used as the basis of a new generation of PPP. Colloidal solutions of nanocrystalline silver containing 0.5 g l−1 of silver and 0.01-0.4 g l−1 of polyhexamethylene biguanide hydrochloride (PHMB) were obtained by reduction of silver nitrate with sodium borohydride in the presence of PHMB. The field experiment has shown that silver-containing solutions have a positive effect on agronomic properties of potato, wheat and apple. Also the increase in activity of such antioxidant system enzymes as peroxidase and catalase in the tissues of plants treated with nanosilver has been registered.
ISSN:2053-1591
2053-1591
DOI:10.1088/2053-1591/aa7a2e