Cyanobacteria as a Natural Biotechnological Tool for Bio-Reclamation of “Usar” Soils

Vivek Kumar Yadav¹ , D.V. Singh²

Section:Research Paper, Product Type: Journal-Paper
Vol.9 , Issue.5 , pp.57-61, Oct-2022

Online published on Oct 31, 2022

Copyright © Vivek Kumar Yadav, D.V. Singh . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Soil salinity is only of the best international challenging situations ‘Usar’ (Saline/Alkaline) soils. ‘Usar’ soil is widespread in eastern Utter Pradesh India and is either saline or alkaline. Such soils are unproductive, impermeable, hard, barren, and compact. ‘Usar’ soils restrict plant increase through bad water infiltration, enhanced mechanical resistance to root growth, water logging, and bad water availability with inside the soil profile. The experimentally studied soil sample has high pH, EC, Organic compound, high exchangeable Na+, and low Ca2+. The low amount of EC and Calcium in ‘Usar’ soil cannot support the conventional growth of plant species. Blue-green algae act pretty much as good plant food and will be used for reclamations of such soils. Heterocystous filamentous forms increase the N content of soil and area unit capable of solubilizing microorganism nutrients. The adhesive sheath of blue-green algae absorbs water and retains it. Comparatively, more growth of isolated cyanobacteria (Nostoc linckia Roth) in ‘Usar’ soils solution than in Allen-Arnon nutrient medium showed that the strain is alkalophilic and salt tolerant. The inhibition of sodium ion influx appears to be a major mechanism for the survival of cyanobacteria against salt stress and synthesis of salt-stress proteins have been found in cyanobacteria. Therefore, farmers will use blue-green algae to create their agricultural land and ‘Usar’ land nitrogen-rich and fertile economically and naturally.

Key-Words / Index Term :
Cyanobacteria, “Usar” soil, Reclamation, Heterocystous and Salinity.

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