Abstract
Five Azospirillum brasilense strains were isolated from the roots of finger millet (Eleusine coracana L.) plants grown in acid soils of Chhota Nagpur region of Bihar. These strains were characterized for their shape, size, motality, strain specific chemotaxis and nitrogen fixation ability in liquid medium containing different concentrations of AlCl3 and MnCl3 at different pH levels. These strains also showed cross-resistance to neomycin and penicillin but not to chloramphenicol and tetracyclin.
The use of various carbon substrate for N2-dependent growth and nitrogenase activity were also determined. Response of inoculation with these acid-tolerant strains was variable with different genotypes of finger millet in sterile acid soil. These results demonstrate that acid-tolerant strains may be most suitable for nitrogen economy, mineral uptake and plant growth in acid soils having various pH and associated factors of acidity.
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Rai, R. (1991). Isolation, characterization and associative N-fixation of acid-tolerant Azospirillum brasilense strains associated with Eleusine coracana in low pH-Al-rich acid soil. In: Wright, R.J., Baligar, V.C., Murrmann, R.P. (eds) Plant-Soil Interactions at Low pH. Developments in Plant and Soil Sciences, vol 45. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3438-5_75
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DOI: https://doi.org/10.1007/978-94-011-3438-5_75
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