National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An investigation was carried out to isolate bacterial endophytes from small millets that have the ability to produce phytohormones like indole-3-acetic acid (IAA), gibberellic acid (GA), cytokinin and1-aminocyclopropane-1-carboxylate (ACC) deaminase. Thirty two bacterial endophytes are isolated from small millets and among thirty two isolates, twenty isolates produced indole-3-acetic acid (IAA) in the range of 96.70 μg to 254.95 μg and the isolate KMS1 produced significantly highest concentration of IAA (254.95 μg) followed by FMR3 (231.87μg). Out of thirty two isolates, only sixteen isolates produced gibberellic acid (GA) and the highest GA was recorded in isolate KMS5 (11.04μg). Twenty one isolates produced cytokinins and the maximum cytokinin production was observed in isolate KMS5 (8.66 µg). The bacterial endophytes were tested for 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity and eleven isolates viz., BMR5, BML1, FMR7, FMR9, FMS2, FML12, FTMS5, KMR4, KMS5, LMR1, LMR4, LMS1 and PML3 shown positive for production of ACC deaminase enzyme in the plate assay. This work revealed that some endophytic bacteria from small millets produced plant growth promoting hormones and enhanced drought tolerance by ACC production that would help in plant growth and further these endophytic bacteria can be used as bioinoculants.
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