International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 6, Issue:11, November, 2017

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(11): 2692-2701

Plant Growth Promotion Efficacy of Indole Acetic Acid (IAA) Produced by a Mangrove Associated Fungi-Trichoderma viride VKF3
Nathan Vinod Kumar1*, K. Subha Rajam2 and Mary Esther Rani2
1National Institute of Oceanography-CSIR, Rgional Centre, Cochin 682018, Kerala, India
2Research Centre, Department of Botany and Microbiology, Lady Doak College,Madurai -625002, Tamil Nadu, India
*Corresponding author

The microorganisms have been widely used for phytohormone production and in bio-control of fungal pathogens. In the present study, T. viride VKF3, a mangrove isolate was used for production of auxin IAA under in vitro condition. T. viride VKF3 yielded a high IAA production of 115 µg mL-1 with 0.5% L-tryptophan. The IAA produced by the isolate was confirmed through Thin layer chromatography (TLC) and High performance liquid chromatographic (HPLC) analysis by comparison with standard IAA. The isolate was also capable of producing extracellular enzymes like cellulase, xylanase along with siderophore production which conditions soil and bioavailability of nutrients. The culture filtrate exhbibited plant growth promotional activity along with enhanced germination percentage. T. viride VKF3 exhibited a maximum inhibition of 82 and 94% was achieved by against fungal pathogens F. oxysporum and A. niger respectively. This report shows a high IAA production using T. viride VKF3 with bio-control potential.

Keywords: Indole acetic acid, Trichoderma viride, Fungi, Phytohormones, Antagonism.

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How to cite this article:

Nathan Vinod Kumar, K. Subha Rajam and Mary Esther Rani. 2017. Plant Growth Promotion Efficacy of Indole Acetic Acid (IAA) Produced by a Mangrove Associated Fungi-Trichoderma viride VKF3.Int.J.Curr.Microbiol.App.Sci. 6(11): 2692-2701. doi:
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