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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

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

Int.J.Curr.Microbiol.App.Sci.2018.7(9): 3427-3437
DOI: https://doi.org/10.20546/ijcmas.2018.709.425


Phytohormone Production and Drought Tolerance Activity of Bacterial Endophytes Isolated from Small Millets
M. Raveendra Reddy, M.K. Shivaprakash, N. Earanna and B. Narayanaswamy
Department of Agricultural Microbiology, University of Agricultural Sciences, GKVK, Bangalore, Karnataka, India
*Corresponding author
Abstract:

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.


Keywords: Endophytic bacteria, Small millets, IAA, GA, Cytokinin, ACC
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How to cite this article:

Raveendra Reddy, M., M.K. Shivaprakash, N. Earanna and Narayanaswamy, B. 2018. Phytohormone Production and Drought Tolerance Activity of Bacterial Endophytes Isolated from Small Millets.Int.J.Curr.Microbiol.App.Sci. 7(9): 3427-3437. doi: https://doi.org/10.20546/ijcmas.2018.709.425