![]() ![]() ![]() This article presents an overview of current trends and challenges on KSB, mechanisms and their role in plant growth promotion, and eventually gives some perspectives for research on K in agriculture. Hence, the production and management of biological fertilizers containing KSB can be an effective alternative to chemical fertilizers. KSB can dissolve silicate minerals and release K through the production of organic and inorganic acids, acidolysis, polysaccharides, complexolysis, chelation, and exchange reactions. KSB are usually present in all soils, although their number, diversity and ability for K solubilization vary depending upon the soil and climatic conditions. circulans have capacity to solubilize K minerals (e.g., biotite, feldspar, illite, muscovite, orthoclase, and mica). Many bacteria such as Acidothiobacillus ferrooxidans, Paenibacillus spp., Bacillus mucilaginosus, B. It is known that potassium solubilizing bacteria (KSB) can solubilize K-bearing minerals and convert the insoluble K to soluble forms of K available to plant uptake. Application of chemical fertilizers has a considerably negative impact on environmental sustainability. Naturally, soils contain K in larger amounts than any other nutrients however most of the K is unavailable for plant uptake. *Corresponding author: (K) is considered as an essential nutrient and a major constituent within all living cells. ![]() ![]() Alikhani 1ġ Department of Soil Science, Faculty of Agricultural Engineering & Technology, University College of Agriculture & Natural Resources, University of Tehran, Karaj- Iran. Potassium solubilizing bacteria (KSB): Mechanisms, promotion of plant growth, and future prospects A review ![]()
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