Efficacy of Potassium Solubilizing Fungi isolated from the Rhizospheric Soil of Paddy

Paper Details

Research Paper 08/09/2024
Views (19) Download (3)
current_issue_feature_image
publication_file

Efficacy of Potassium Solubilizing Fungi isolated from the Rhizospheric Soil of Paddy

R. Ranjitha, Alagappan Gandhi
Int. J. Biosci.25( 3), 166-171, September 2024.
Certificate: IJB 2024 [Generate Certificate]

Abstract

Improving soil fertility is essential for enhancing agricultural productivity, with potassium (K) being a crucial nutrient for plant growth. In soil, potassium is predominantly found in insoluble forms, making it unavailable to plants. This study aims to identify and evaluate fungal strains capable of solubilizing insoluble potassium sources to improve soil fertility. Soil samples were collected from paddy fields in Pudukkottai, Tamil Nadu, and potassium-solubilizing fungi were isolated using modified Aleksandrov agar and Potato Dextrose Agar media. Ten fungal isolates were screened for their ability to solubilize potassium, with KSF1 demonstrating the highest solubilization index (SI) of 1.51. Quantitative analysis revealed that KSF1, identified as Aspergillus niger, released the highest amount of potassium from mica (42.16 mg/25 ml) on the 10th day of incubation. This isolate showed superior solubilization capabilities compared to others. The findings suggest that Aspergillus niger KSF1 is a highly effective potassium solubilizer, offering a sustainable approach to enhancing soil fertility and supporting agricultural productivity.

VIEWS 7

Bagyalakshmi B. 2012. Influence of potassium solubilizing bacteria on crop productivity and quality of tea (Camellia sinensis). African Journal of Agricultural Reseearch 7(30), 4250–4259. https://doi.org/10.5897/ajar11.2459

Basak BB, Maity A, Ray P, Biswas DR, Roy S. 2022. Potassium supply in agriculture through biological potassium fertilizer: a promising and sustainable option for developing countries. Archives of Agronomy and Soil Science 68(1), 101–114. https://doi.org/10.1080/03650340.2020.1821191.

Barnett HL, Hunter BB. 1998. Illustrated Genera of Imperfect Fungi.4th ed., St. Paul Minnesota, APS Press.

Chandrashekar MA, Soumya Pai K, Raju NS. 2014. Fungal Diversity of Rhizosphere Soils in Different Agricultural fields of Nanjangud Taluk of Mysore District, Karnataka, India. International Journal of Current Microbiology and Applied Sciences 3(5), 559–566. http://eprints.uni-mysore.ac.in/16891

Etesami H, Emami S, Alikhani HA. 2017. Potassium solubilizing bacteria (KSB): Mechanisms, promotion of plant growth, and future prospects – a review. Journal of Soil Science and Plant Nutrition, 17(4), 897–911. https://doi.org/10.4067/S0718-95162017000400005

Gautam AKGA. 2013. Characterization of Aspergillus species associated with commercially stored triphala powder. Article in African Journal Of Biotechnology 11(104), 16814–16823. https://doi.org/10.5897/AJB11.2311

Gilman JC. 2008. A manual of soil fungi. Biotech books, Delhi, India.

Kang SC, Ha CG, Lee TG, Maheshwari DK. 2002. Solubilization of insoluble inorganic phosphates by a soil-inhabiting fungus Fomitopsis sp. PS 102 Current Science 82(4), 439–442.

Khandeparker L, Bhosle NB. 2004. Isolation and characterization of exopolysaccharides from the biofilm forming marine bacterium Pseudomonas nautica. Marine Biotechnology 6(3), 221-229. https://doi.org/10.1007/s10126-003-0012-6.

Lian B, Wang B, Pan M , Liu C, Teng HH. 2008. Microbial release of potassium from K-bearing minerals by thermophilic fungus Aspergillus fumigatus. Geochimica et Cosmochimica Acta, 72(1), 87–98. https://doi.org/10.1016/j.gca.2007.10.005

Lopes-Assad ML, Avansini SH, Rosa MM, de Carvalho JRP, Ceccato-Antonini SR. 2010. The solubilization of potassium-bearing rock powder by Aspergillus niger in small-scale batch fermentations. Canadian Journal of Microbiology 56(7), 598–605. https://doi.org/10.1139/W10-044

Masood S, Bano A. 2016 Mechanism of potassium solubilization in the agricultural soils by the help of soil microorganisms Potassium Solubilizing Microorganisms for Sustainable Agriculture ed VS Meena et al., (Springer) chapter 10 137–147 p.

Meena VS, Maurya BR, Verma JP, Meena RS. 2016. Potassium solubilizing microorganisms for sustainable agriculture. Potassium Solubilizing Microorganisms for Sustainable Agriculture, 1–331. https://doi.org/10.1007/978-81-322-2776-2.

Sugumaran P, Janarthanum B. 2014. Solubilization of Potassium containing minerals by bacteria and their effect of plant growth. World Journal of Agriculture Science 3(3), 350–355.

Ramesh A, Sharma SK, Sharma MP, Yadav N, Joshi OP. 2014. Inoculation of zinc solubilizing Bacillus aryabhattai strains for improved growth, mobilization and biofortification of zinc in soybean and wheat cultivated in Vertisols of central India. Applied Soil Ecology 73, 87–96. https://doi.org/10.1016/j.apsoil.2013.08.009

Sharma A, Shankhdhar D, Shankhdhar SC. 2016. Potassium-solubilizing microorganisms: Mechanism and their role in potassium solubilization and uptake. Page 203-219 in V.S. Meena et al., eds. Potassium Solubilizing Microorganisms for Sustainable Agriculture, Springer India.

Samah M, Youssef, Ahmed Shaaban AA, ARAET, Laila R, Abd Al Halim Laila A, Rabee KMA, RMMA, RA, KAH. 2023. Compost and Phosphorus/Potassium-Solubilizing Fungus Effectively Boosted Quinoa’s Physio-Biochemical Traits, Nutrient Acquisition, Soil Microbial Community, and Yield and Quality in Normal and Calcareous Soils.

Yaghoubi Khanghahi M, Pirdashti H, Rahimian H, Nematzadeh G, Ghajar Sepanlou M. 2018. Potassium solubilising bacteria (KSB) isolated from rice paddy soil: from isolation, identification to K use efficiency. Symbiosis 76(1), 13–23.  https://doi.org/10.1007/s13199-017-0533-0

Zhang C, Kong F. 2014. Isolation and identification of potassium-solubilizing bacteria from tobacco rhizospheric soil and their effect on tobacco plants. Applied Soil Ecology 82, 18–25. https://doi.org/10.1016/j.apsoil.2014.05.002