TY - JOUR
T1 - Perspectives of potassium solubilizing microbes in sustainable food production system
T2 - A review
AU - Sattar, Annum
AU - Naveed, Muhammad
AU - Ali, Mohsin
AU - Zahir, Zahir A.
AU - Nadeem, Sajid M.
AU - Yaseen, M.
AU - Meena, Vijay Singh
AU - Farooq, Muhammad
AU - Singh, Renu
AU - Rahman, Mahfuz
AU - Meena, Har Narayan
N1 - Funding Information:
The authors are grateful to Ms Lee Ann Moccaldi, West Virginia University, Morgantown, USA and Mrs. Sunita Kumari Meena, ICAR-Indian Agriculture Research Institute, New Delhi, India for editing the manuscript. We send thanks to the Editor-in-Chief, Applied Soil Ecology and anonymous reviewers for their constructive comments, who helped us to improve the manuscript.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/1
Y1 - 2019/1
N2 - Potassium is a major essential plant nutrient that plays a pivotal role in plant physiological and metabolic processes, and provides resistance against biotic and abiotic stresses. In order to feed an ever increasing world population, cultivation of high yielding varieties in an intensive production system during the last few decades caused depletion soil fertility status, especially potassium (K). As 90–98% K reserves in soil system are non-exchangeable mineral sources, efficient rhizospheric microbes (ERMs) are needed to effectively dissolve this mineral and make it available to plants. A diverse group of ERMs such as rhizobacteria (Bacillus edaphicus, B. mucilaginosus, Acidothiobacillus ferrooxidans, B. circulans, Paenibacillus sp.), fungal strains (Aspergillus terreus and Aspergillus sp.) and nitrogen fixing rhizobacteria (NFR) is involved in K mineral (orthoclase, muscovite, feldspar, biotite, mica, illite) solubilization. Mechanisms utilized by microbes for K dissolution are organic acid production, lowering soil pH, acidolysis, chelation, exchange reactions and complexation. These ERMs also contribute to other beneficial effects such as production of growth hormones, nitrogen (N) fixation, phosphorus (P) dissolution, enlargement of root system and antibiotic production. More specifically, potassium solubilizing microbes (KSMs) are being commercialized in the form of biofertilizer and inoculum to alleviate constraints of chemical fertilizers. This is an ecofriendly approach towards sustainable food production systems in many countries of the world. This report updates our current knowledge and potential for developing microbial based products.
AB - Potassium is a major essential plant nutrient that plays a pivotal role in plant physiological and metabolic processes, and provides resistance against biotic and abiotic stresses. In order to feed an ever increasing world population, cultivation of high yielding varieties in an intensive production system during the last few decades caused depletion soil fertility status, especially potassium (K). As 90–98% K reserves in soil system are non-exchangeable mineral sources, efficient rhizospheric microbes (ERMs) are needed to effectively dissolve this mineral and make it available to plants. A diverse group of ERMs such as rhizobacteria (Bacillus edaphicus, B. mucilaginosus, Acidothiobacillus ferrooxidans, B. circulans, Paenibacillus sp.), fungal strains (Aspergillus terreus and Aspergillus sp.) and nitrogen fixing rhizobacteria (NFR) is involved in K mineral (orthoclase, muscovite, feldspar, biotite, mica, illite) solubilization. Mechanisms utilized by microbes for K dissolution are organic acid production, lowering soil pH, acidolysis, chelation, exchange reactions and complexation. These ERMs also contribute to other beneficial effects such as production of growth hormones, nitrogen (N) fixation, phosphorus (P) dissolution, enlargement of root system and antibiotic production. More specifically, potassium solubilizing microbes (KSMs) are being commercialized in the form of biofertilizer and inoculum to alleviate constraints of chemical fertilizers. This is an ecofriendly approach towards sustainable food production systems in many countries of the world. This report updates our current knowledge and potential for developing microbial based products.
KW - K dynamics
KW - K solubilization
KW - Soil fertility
KW - Sustainable food production
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U2 - 10.1016/j.apsoil.2018.09.012
DO - 10.1016/j.apsoil.2018.09.012
M3 - Review article
AN - SCOPUS:85054451128
SN - 0929-1393
VL - 133
SP - 146
EP - 159
JO - Applied Soil Ecology
JF - Applied Soil Ecology
ER -