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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 2019 - IJCMAS--ICV 2019: 96.39 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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
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.2020.9(3): 1593-1604
DOI: https://doi.org/10.20546/ijcmas.2020.903.187


Isolation, Screening and Characterization of Efficient
Drought Stress Tolerant Fluorescent Pseudomonad Isolates from
Groundnut (Arachis hypogaea L.) Rhizosphere
Prasanna Kumar1*, N. Trimurtulu2, A. Vijaya Gopal2,Padma2 and P. Madhu Vani2
1Department of Agricultural Microbiology, APGC, ANGRAU, India
2Department of Soil Science, Regional Agricultural Research Station, ANGRAU,Lam, Guntur- 522 034, Andhra Pradesh, India
*Corresponding author
Abstract:

Fluorescent pseudomonad bacteria, a major constituent of Rhizobacteria, enhance the plant growth through diverse mechanisms. The association between plant and fluorescent pseudomonad bacteria contributes to the successful thriving of plants in extreme environments featured by moisture stress. The enzyme has been noticed in a few numbers of bacteria and which helps the plant growth and development during biotic and abiotic stress situations with the depletion of stress levels of ethylene production in plant system. Fluorescent pseudomonads drawn broad attention as production of secondary metabolites, phytohormones, siderophores, enzymes, antibiotics, HCN and volatile compounds. They can be promoted in low input sustainable agricultural practices. The present experiment revealed that fifty-one efficient bacterial isolates obtained from drought prone rhizosphere soils of groundnut. Isolated strains were also tested for further drought stress screening by poly ethylene glycol 6000 at 0 % (-0.05 MPa), 10 % (-0.65 MPa), 20 % (-1.57 MPa), 30 % (-2.17 MPa) and 40 % (-2.70 MPa). Thirty-seven bacterial isolates were further found to have an enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity which improved plant growth during stress conditions. Twelve isolates were found to be positive for IAA production. The positive isolates taken and screened for the presence of Fluorescent pseudomonads using King’s B media.


Keywords: Rhizobacteria, ACC deaminase, α-ketobutyrate, Abiotic stress, Biocontrol, Pseudomonads, Phytohormones
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How to cite this article:

Prasanna Kumar. B, N. Trimurtulu, A. Vijaya Gopal, V. Padma and Madhu Vani. P. 2020. Isolation, Screening and Characterization of Efficient Drought Stress Tolerant Fluorescent Pseudomonad Isolates from Groundnut (Arachis hypogaea L.) Rhizosphere. Int.J.Curr.Microbiol.App.Sci. 9(3): 1593-1604. doi: https://doi.org/10.20546/ijcmas.2020.903.187