Formation of Ag/AgCl nanoparticles in the matrix of the exopolysaccharide of a diazotrophic strain Azotobacter chroococcum XU1


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Abstract

A complex of Ag/AgCl nanoparticles was synthesized on the basis of the extracellular polysaccharide of Azotobacter chroococcum XU1 and 10 mM AgNO3 solution. The complex was characterized by UV spectroscopy, X-ray diffraction, and scanning electron microscopy. Colloidal solutions of the complex had absorption peaks at 260 and 420 nm, indicating the formation Ag/AgCl nanoparticles. The size of the nanoparticles varied from 6 to 50 nm. The nanobiocomposite consisting of the exopolysaccharide matrix and Ag/AgCl nanoparticles exhibited a fungicidal effect against such plant pathogens as Fusarium oxysporum f. sp. vasinfectum and Verticillium dahliae.

About the authors

B. A. Rasulov

Xinjiang Institute of Ecology and Geography; Institute of Genetics and Plants Experimental Biology

Author for correspondence.
Email: bakhtiyor_1980@mail.ru
China, Urumqi; Toshkent

K. D. Davranov

National University of Uzbekistan named after Mirzo Ulughbek

Email: bakhtiyor_1980@mail.ru
Uzbekistan, Tashkent city

Li Wen Jun

Xinjiang Institute of Ecology and Geography

Email: bakhtiyor_1980@mail.ru
China, Urumqi

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