Effect of Natural Polysaccharide Matrix-Based Selenium Nanocomposites on and Rhizospheric Microorganisms.

We studied the effects of new chemically synthesized selenium (Se) nanocomposites (NCs) based on natural polysaccharide matrices arabinogalactan (AG), starch (ST), and kappa-carrageenan (CAR) on the viability of phytopathogen , rhizospheric bacteria, and potato productivity in the field experiment. Using transmission electron microscopy (TEM), it was shown that the nanocomposites contained nanoparticles varying from 20 to 180 nm in size depending on the type of NC. All three investigated NCs had a fungicidal effect even at the lowest tested concentrations of 50 µg/mL for Se/AG NC (3 µg/mL Se), 35 µg/mL for Se/ST NC (0.

Complete Genome Sequence of Rhodococcus qingshengii Strain VKM Ac-2784D, Isolated from Elytrigia repens Rhizosphere.

Rhizosphere bacteria are considered to be promising destructors of oil and its components. Bacterial species of the genus can degrade a variety of hydrocarbons and are widely used for the bioremediation of polluted environments. Here, we report the complete genome sequence of strain VKM Ac-2784D.