Abstract Soil contamination by oil and petroleum products represents a serious environmental problem that requires effective remediation methods. In recent years, bioremediation using specialized biological products has proven to be a promising, environmentally safe, and cost-effective approach to addressing this issue. Modern studies demonstrate the high efficiency of bioproducts containing specialized bacterial strains in degrading petroleum hydrocarbons. The most commonly used microorganisms include representatives of the genera Pseudomonas, Rhodococcus, and Bacillus, which are capable of metabolizing various components of oil. Research shows that bioproducts can reduce the concentration of petroleum hydrocarbons in soil by 70-90% within several months, even under harsh climatic conditions and at low temperatures. For example, a new bioproduct developed for the arid conditions of Kazakhstan demonstrated the ability to degrade 70% of crude oil in soil contaminated with 10% oil over six months of field trials.
A. Uspabayeva, G. Rysbayeva, A. Sattarova et al.· Brazilian Journal of Biology· 0 citations
Abstract Greenhouse tomato cultivation faces challenges such as nutrient imbalance and declining soil health, requiring sustainable biostimulant strategies. Objective: This study aimed to evaluate the synergistic effects of humic acid (HA) and arbuscular mycorrhizal fungi (AMF) on tomato growth, yield, and nutritional quality. Tomato plants were subjected to four treatments: control, HA alone, AMF alone, and combined HA+AMF. Growth parameters, biochemical composition, and mineral content were analyzed. Results: The combined HA+AMF treatment significantly enhanced shoot length (+50.4%), root length (+32.1%), fruit yield (+415.2%), and lycopene content (+395.3%) compared to the control. Increases in proteins, sugars, flavonoids, and key minerals (K, P, Mg) were also observed. Molecular analysis confirmed upregulation of stress-related and nutrient transporter genes. The HA+AMF synergy markedly improves tomato productivity and fruit quality, offering an eco-efficient solution for sustainable agriculture in semi-arid conditions..
N. Tolepbayeva, B. Kedelbaev, A. Uspabayeva et al.· Brazilian Journal of Biology· 0 citations
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