Pollution Research Paper

Vol 33, Issue 04, 2014 ; Page No.(695-702 )

ANTAGONISTIC ACTIVITY OF PLANT GROWTH PROMOTING NATIVE PSEUDOMONAS ISOLATES AGAINST SOIL BORNE FUNGAL PATHOGENS

BHARATHULA SARVANI AND RAVULA SUBHASH REDDY

Abstract

Plant growth promoting Rhizobacteria (PGPR) are beneficial bacteria that associate plant roots and enhance the plant growth by various mechanisms. Several bacteria thrive on abundant nutrients in the rhizosphere and some of these possess antagonistic action which safeguard the plant from pathogens and stimulate growth. In this context, it is important to investigate the natural presence of these microorganisms in the legumes viz., Groundnut and Red gram rhizosphere soils and propose a selective screening to find promising PGP strains. In this study, rhizosphere soils were obtained from different areas of Groundnut and Red gram crops in Rangareddy district. Fifteen bacteria were successfully characterized and identified as fluorescent Pseudomonas, based on their cultural, morphological and biochemical characteristics. The study was further preceded for in vitro screening of Plant growth promoting traits of the bacterial isolates viz., production of Indole Acetic acid (IAA), Ammonia, Hydrogen cyanide, Siderophores and Phosphate solubilization. All the isolates produced Ammonia and majority of the isolates showed positive results for the production of IAA, Siderophores and phosphorus solubilization. Few of the isolates displayed HCN (40%) production. The PGPR strains were also tested for in vitro antagonism against Rhizoctonia solani, Sclerotium rolfsii and Fusarium solani. Results revealed that all the Pseudomonas isolates inhibited Fusarium solani and 80% of the isolates controlled the mycelium growth of Rhizoctonia solani and Sclerotium rolfsii.

Enter your contact information below to receive full paper.
Your Name :
Email:
Phone:
City:
Cost of Full Paper: Rs.75 for Indian Nationals or $20 (USD) for international subscribers.
By clicking on Request Paper you Agree to pay the above mentioned cost per paper.
  
Journal Issues
Vol 39, Issue 1, 2020
Vol 39, Feb Suppl. Issue, 2020
Vol 38, Issue 4, 2019
Vol 38, November Suppl Issue
Vol 38, Issue 3, 2019
Vol 38, August Suppl Issue
Vol 38, Issue 2, 2019
Vol 38, March Suppl Issue
Vol 38, Issue 1, 2019
Vol 37, Issue 4, 2018
Vol 37, Issue 3, 2018
Vol 37, Issue 2, 2018
Vol 37, May Suppl. Issue 2018
Vol 37, Issue 1, 2018
Vol. 36, Issue 4, 2017
Vol. 36, Issue 3, 2017
Vol. 36, Issue 2, 2017
Vol. 36, Issue 1, 2017
Vol. 35, Issue 4, 2016
Vol. 35, Issue 3, 2016
Vol. 35, Issue 2, 2016
Vol. 35, Issue 1, 2016
Vol 34, Issue 4, 2015
Vol 34, Issue 3, 2015
Vol 34, Issue 2, 2015
Vol 34, Issue 1, 2015
Vol 33, Issue 04, 2014
Vol 33, Issue 03, 2014
Vol 33, Issue 02, 2014
Vol.33, Issue 01, 2014
Vol.32, Issue 04, 2013
Vol.32, Issue 03, 2013
Vol.32, Issue 02, 2013
Vol.32, Issue 1, 2013
Vol.31, Issue 04, 2012
Vol.31, Issue 3, 2012
Vol.31, Issue 2, 2012
Vol.31, Issue 1, 2012
Vol.30, Issue 4, 2011
Vol.30, Issue 3, 2011
Vol.30, Issue 2, 2011
Vol.30, Issue 1, 2011
Vol.29, Issue 4, 2010
Vol.29, Issue 3, 2010
Vol.29, Issue 2, 2010
Vol.29, Issue 1, 2010
Vol.26, Issue 3, 2007
Vol.20, Issue 02, 2001
Vol.20, Issue 01, 2001
Vol.19, Issue 03, 2000
Vol.19, Issue 01, 2000
Vol.18, Issue 02, 1999
Vol.17, Issue 04, 1998
Vol.17, Issue 03, 1998
Vol.17, Issue 01, 1998
Looking for Past Issues? Click here to get them!!