Free-Flowing Complex Bacterial Preparation for Crop and Efficiency of Its Use in Agroecosystems

Abstract

The present study investigated the influence of different nanomaterials on physiological and biochemical activity of the nitrogen-fixing bacteria Azotobacter vinelandii IMV V-7076 and phosphate mobilizing bacteria Bacillus subtilis IMV V-7023 for the development of high-efficient free-flowing bacterial complex for crop production. Among the studied nanomaterials, vermiculite stimulated the most effectively bacterial growth, synthesis of amino acids and phytohormones, dehydrogenase, catalase and peroxidase activities. Based on vermiculite and highly efficient strains of bacteria Azotobacter vinelandii IMV V-7076 and Bacillus subtilis IMV V-7023, a free-flowing bacterial complex preparation for crop production was created. The preparation was stable during storage, it improved the nitrogenous and phosphorus nutrition of plants stimulated their growth by biologically active substances and protected plants from lesion by phytopathogenic micromicetes and bacteria.

Effect of Different Combinations of Phosphorus and Nitrogen Fertilization on Arbuscular Mycorrhizal Fungi and Aphids in Wheat

“…Nitrogen is an essential macronutrient that promotes plant development and crop yield and quality [27][28][29][30]. Many studies have claimed that N is an essential element involved in the biosynthesis of chlorophyll [31], nucleic acids [32], amino acids [33], and enzymes [34], which are associated with the accumulation of plant nutrients [35,36].…”

Accumulation of Phytohormones by Soil Bacteria Azotobacter Vinelandii and Bacillus Subtilis Under the Influence of Nanomaterials

“…Thus, upon the cultivation of bacteria in the absence of dispersed materials in nutrient medium the 21.5 ng/mL of izopentyl adenine was detected (Tab 5). Vermiculite and silica dioxide particles addition to the nutrient medium of B. subtilis had resulted in a significant increase in cytokinin production (date was present early) (Kurdish et al, 2015). Besides, the addition of vermiculite to the nutrient medium of B. subtilis had stimulated the production of izopentyl adenine (Yanbo Wang et al, 2010), which are determined to this time is not enough, indicating the need for further research in this urgent scientific direction.…”

Interaction of Bacteria with Solid Materials and Nanomaterials as Basis New Biotechnologies

“…Важливим фактором стимулюючого впливу мікроорганізмів на ріст і розвиток рослин є синтез ними фітогормонів. Встановлено, що бактерії Bacillus subtilis ІМВ В-7023 і Azotobacter vinelandii ІМВ В-7076 здатні синтезувати ряд речовин фітогормональної природи [45]. За участі к.б.н.…”