Abstract
Seven endophytic bacterial isolates were finally recovered from native sugarcane varieties at hilly areas namely Berinag, Champawat and Didihat of Uttarakhand state in northern Himalayan region. New isolates and two standard cultures—Azospirillum brasilense and Gluconacetobacter diazotrophicus, were evaluated for their morphological, biochemical and molecular characteristics. Morphologically all were rod shaped, Gram-negative bacteria. Their plant growth promotory properties were also assessed which proved isolates RtBn and StBn as IAA producing. Except isolate StBn, all were phosphate solubilising and except RtBn all produced siderophores. Molecular characterisation of the isolates was performed using amplified 16S r-DNA restriction analysis. Similarity index in unweighted pair group method with arithmetic mean programme clustered the isolates according to their geographical distribution. Native isolates showed insignificant similarity with South American strains used as standards. nifH amplification was observed with all the isolates used in the study which again establish them as potential N-fixers.
Highlights
Indian green revolution started in mid 1960s which enabled the food autonomy in country
Seven endophytic bacterial isolates were recovered from native sugarcane varieties at hilly areas namely Berinag, Champawat and Didihat of Uttarakhand state in northern Himalayan region
The present study aims to characterise morphological, biochemical and plant growth promotory (PGP ) properties of the isolates
Summary
Indian green revolution started in mid 1960s which enabled the food autonomy in country. The present study aims to characterise morphological, biochemical and plant growth promotory (PGP ) properties of the isolates. Carbon source utilisation profiling was used for establishing phylogenetic relationship between isolates and the standard by unweighted pair group method with arithmetic mean (UPGMA), sub programme of online software http://genomes.
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