Effect of selenium and arabinogalactan nanocomposite on viability of the phytopathogen Clavibacter michiganensis subsp. sepedonicus

Novel Nanobiocomposites Based on Natural Polysaccharides as Universal Trophic Low-Dose Micronutrients

“…(Lille Skensved, Denmark). Previously, we studied the effect of original polysaccharides on potatoes ( Solanum tuberosum L.) and bacteria, in which the polysaccharides did not have a negative effect on plants and even stimulated the growth of Cms colonies and rhizosphere bacteria [ 82 , 83 , 84 , 85 ]. NCs were synthesized according to the following procedures:…”

Copper-Containing Bionanocomposites Based on Natural Raw Arabinogalactan as Effective Vegetation Stimulators and Agents against Phytopathogens

“…In comparison with our previous results on similar nanosystems, we note that AGr-Cu did not have a pronounced effect on the development and growth of the photosynthetic part of plants, for example, in comparison with manganese-containing nanocomposites [ 4 , 12 ]. However, the AGr-Cu promoted the development of the root system and also had a pronounced effect on the germination of soybean seeds Glycine max L. With regard to the antibacterial activity, there was also significant suppression of the phytopathogen Cms , and the effect is comparable to selenium-, silver-, and manganese-containing nanocomposites [ 4 , 32 , 33 , 77 ]; moreover, AGr-Cu greatly reduced the dehydrogenase activity of Cms . Thus, the experiments conducted indicate that the use of Cu-containing NCs based on the natural polysaccharide AGrarepromising as a new potential multifunctional agent for agricultural plants, as well as in biotechnology for artificial nutrient media in the development of autonomous life support systems.…”

“…The AG was obtained from a polysaccharide of Siberian larch, Larixsibirica Ledeb. (Wood Chemistry Ltd., Irkutsk, Russia) [ 17 ].Earlier, we studied the effect of original polysaccharide on potatoes ( Solanum tuberosum L.) and bacteria, where the used polysaccharide did not have a negative effect on plants, and even stimulated the growth of the Cms colonies and rhizosphere bacteria [ 32 , 77 ].…”

“…Therefore, the search for an agent to regulate the number of this pathogen is extremely important. Previously, we demonstrated the success of using a number of nanocomposites based on natural polysaccharides with nanoparticles of chalcogens and metals [ 4 , 12 , 32 , 33 ]. Thus, promising results were obtained on the effect of similar composites with selenium-, manganese-, silver-, and sulfur-containing nanoparticles on potato vegetation and productivity both in field conditions as well as on biometric parameters of plants and resistance to biotic stress in laboratory experimental conditions, including biological activity composites on the inhabitants of the rhizosphere.…”