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Potential of Zinc Solubilising Micro-Organisms in Soil


Affiliations
1 Department of Soil Science and Agricultural Chemistry, Odisha University of Agriculture and Technology, Bhubaneswar (Odisha), India
     

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Zinc (Zn) is an essential element necessary for plant, humans and micro-organisms required relatively in small concentrations (5–100mg kg-1) in tissues for healthy growth and reproduction of plants. It is considered as one of the eight essential trace elements required for crop growth and production. It is present on earth’s crust in tune of 0.008 per cent and zinc has an important role in nutrition and metabolic activities of both eukaryotic and prokaryotic organisms and act as a cofactor or metal activator in various enzymatic systems. Plants absorb Zn as zinc ions (Zn2+). Since Zn does not have variable valence, it has no role in influencing oxidation-reduction (redox) processes directly.The worldwide prevalence of Zn deficiency in crop is due to low solubility of Zn, rather than low Zn availability in soil (Iqbal et al., 2010). The unavailable zinc can be reverted back to available form by application of bacterial strain capable of solubilizing it.
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  • Alexander, M. (1960). Introduction to soil microbiology, p. 312, 398–399. New York and London: John Wiley & Son . Di Simine, C,D., Sayer, J.A. and Gadd, G.M. (1998).

  • Solubilization of zinc phosphate by a strain of Pseudomonas fluorescens isolated from a forest soil. Biol Fert. Soils, 28 : 87-94.

  • Goteti, P.K., Emmanuel, L., Desai, S. and Shaik, M. (2013). Prospective zinc solubilising bacteria for enhanced nutrient uptake and growth promotion in maize (Zea mays L.), Internat. J. Microbiol., Article ID 869697, 1-7.

  • Iqbal, U., Jamil, N., Ali, I. and Hasnain, S. (2010). Effect of zinc-phosphate-solubilizing bacterial isolates on growth of Vignaradiata. Ann. Microbiol., 60 : 243–248.

  • Kumar, P., Dubey, R.C. and Maheshwari, D.K. (2012).Bacillus strains isolated from rhizosphere showed plant growth promoting and antagonistic activity against phytopathogens. Microbiol. Res., 167 : 493–499.

  • Ramesh, A., Sharma, S.K.,Yadav, M.P. and Joshi, N. (2014). Inoculation of zinc solubilizing Bacillus aryabhattai strains for improved growth, mobilization and biofortification of zinc in soybean and wheat cultivated invertisols of centralIndia. Appl. Soil Ecol., 73 : 87–96.

  • Venkatakrishnan, S.S.,Subramoniam, S.R. and Raj, S.A. (2003). Assessing in vitro solubilization potential of different zinc solubilizing bacterial (zsb) isolates, Brazilian J. Microbiol., 34 : 121-125.


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  • Potential of Zinc Solubilising Micro-Organisms in Soil

Abstract Views: 259  |  PDF Views: 0

Authors

Prava Kiran Dash
Department of Soil Science and Agricultural Chemistry, Odisha University of Agriculture and Technology, Bhubaneswar (Odisha), India

Abstract


Zinc (Zn) is an essential element necessary for plant, humans and micro-organisms required relatively in small concentrations (5–100mg kg-1) in tissues for healthy growth and reproduction of plants. It is considered as one of the eight essential trace elements required for crop growth and production. It is present on earth’s crust in tune of 0.008 per cent and zinc has an important role in nutrition and metabolic activities of both eukaryotic and prokaryotic organisms and act as a cofactor or metal activator in various enzymatic systems. Plants absorb Zn as zinc ions (Zn2+). Since Zn does not have variable valence, it has no role in influencing oxidation-reduction (redox) processes directly.The worldwide prevalence of Zn deficiency in crop is due to low solubility of Zn, rather than low Zn availability in soil (Iqbal et al., 2010). The unavailable zinc can be reverted back to available form by application of bacterial strain capable of solubilizing it.

References