alexa New Method for Isolation of Plant Probiotic Fluorescent Pseudomonad and Characterization for 2,4-Diacetylphluoroglucinol Production under Different Carbon Sources and Phosphate Levels
ISSN: 2157-7471

Journal of Plant Pathology & Microbiology
Open Access

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Research Article

New Method for Isolation of Plant Probiotic Fluorescent Pseudomonad and Characterization for 2,4-Diacetylphluoroglucinol Production under Different Carbon Sources and Phosphate Levels

Sumant Chaubey, Malini Kotak and Archana G*

Department of Microbiology & Biotechnology Centre, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara-390 002, Gujarat, India

*Corresponding Author:
Archana G
Department of Microbiology and Biotechnology Centre
Faculty of Science, The Maharaja Sayajirao University of Baroda
Vadodara-390 002, Gujarat, India
Tel: 0091-265-2794396
Fax: 0091- 265-2792508;
E-mail: [email protected]

Received date: January 30, 2015; Accepted date: February 22, 2015; Published date: March 05, 2015

Citation:Chaubey S, Kotak M, Archana G (2015) New Method for Isolation of Plant Probiotic Fluorescent Pseudomonad and Characterization for 2,4-Diacetylphluoroglucinol Production under Different Carbon Sources and Phosphate Levels. J Plant Pathol Microb 6:253. doi: 10.4172/2157-7471.1000253

Copyright: © 2015 Chaubey S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

Abstract

Aims: Present work describes the new enrichment method for the isolation of effective root colonizing and rhizospheric competent strains of genus fluorescent Pseudomonad and study of metabolic regulation of 2,4-DAPG biosynthesis in them under carbon sources and Pi levels.

Methods and Results: Three rounds of plant assay was performed using root tip attached microorganism mixtures for the next round of root treatment followed by phonotypical separation of fluorescent colonies to isolate fluorescent pseudomonad strains from different crop and vegetables rhizospheres. Isolated strains were characterized for their Plant Growth Promoting Rhizobacteria (PGPR) traits viz phosphate solubilisation, production of siderophore, IAA, HCN, 1-aminocyclopropane-1-carboxylate /L-methionine utilization pathway and antifungal metabolites production. Isolated strains have shown high 2,4-diacetylphluoroglucinol production and strain G2 has shown 4.6 fold high production than Pf CHA0.

Conclusions: Strain G1 and G8 supported 2,4-DAPG production under sucrose and found to be suitable biocontrol for sucrose rich rhizosphere. Strain G1 and G2 showed good 2,4-DAPG production at high Pi and will perform well in phosphate fertilizer supplemented soils.

Significance of Study: Identification of factors favorable for bio-control will facilitate the targeted application of specific strains to plant rhizosphere/soil type/fertilizer supplemented suitable to their biocontrol activity i.e. “prescription” controls.

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