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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.2018.7(1): 2824-2833
DOI: https://doi.org/10.20546/ijcmas.2018.701.337


Osmotolerant Plant Growth Promoting Bacterial Inoculation Enhances the Antioxidant Enzyme Levels of Tomato Plants Under Water Stress Conditions
Hema Bindu1, G. Selvakumar1*, K.S. Shivashankara1 and N. Sunil Kumar2
1ICAR- Indian Institute of Horticultural Research, Hesaraghatta Lake Post,Bengaluru-560089, Karnataka, India
2Gokaraju Rangaraju Institute of Engineering and Technology, Hyderabad, Telangana, India
*Corresponding author
Abstract:

Drought stress alters productivity of crops in general and horticultural crops in particular resulting in poor quality produce and reduced yields. When plants are exposed to severe water stress, they suffer from membrane destabilization and general nutrient imbalances that alter their physiology and defence mechanisms. The antioxidant enzyme system of plants plays an important role in the scavenging of Reactive Oxygen Species (ROS) that accumulate during stress, and is the first line of defence to counter the deleterious stress effects. In this study the effects of osmotolerant bacterial inoculation on the protein content, antioxidant enzymes viz., catalase (CAT), peroxidase (POX), superoxide dismutase (SOD), glutathione reductase (GR) and the proline content of tomato plants subjected to continued water stress for a period of 144 h, was determined. It was evident that across bacterial treatments, plants inoculated with osmotolerant rhizobacterial strains recorded elevated levels of antioxidant enzymes compared to the uninoculated plants. But the isolates showed variability in enhancing the levels of the different antioxidant enzymes studied. Under water stressed conditions plants inoculated with Enterobacter P-68, Enterobacter P-46, Enterobacter P-39 and Bacillus G-4 recorded the highest activities of peroxidase, superoxide dismutase, catalase and glutathione reductase respectively, while plants inoculated with Bacillus amyloliquefaciens P-72 recorded the highest levels of proline accumulation.


Keywords: Osmotolerant plant growth, Bacterial inoculation
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How to cite this article:

Hema Bindu, G., G. Selvakumar, K.S. Shivashankara and Sunil Kumar, N. 2018. Osmotolerant Plant Growth Promoting Bacterial Inoculation Enhances the Antioxidant Enzyme Levels of Tomato Plants Under Water Stress Conditions.Int.J.Curr.Microbiol.App.Sci. 7(1): 2824-2833. doi: https://doi.org/10.20546/ijcmas.2018.701.337