alexa Potential Plant Growth-Promoting Activity of Pseudomonas sp Isolated from Paddy Soil in Malaysia as Biocontrol Agent
ISSN: 2157-7471

Journal of Plant Pathology & Microbiology
Open Access

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Research Article

Potential Plant Growth-Promoting Activity of Pseudomonas sp Isolated from Paddy Soil in Malaysia as Biocontrol Agent

Mansoureh Sadat Sharifi Noori1* and Halimi Mohd Saud2

1Department of Agro-technology, Universiti Putra Malaysia, Malaysia

2Department of Agro-technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

*Corresponding Author:
Mansoureh Sadat Sharifi Noori
Department of Agrotechnology, Universiti Putra Malaysia, Malaysia
Tel: +603 8946 4172
Fax: +603 8946 4151
E-mail: [email protected]

Received date: April 23, 2012; Accepted date: May 21, 2012; Published date: May 23, 2012

Citation: Noori MSS, Saud HM (2012) Potential Plant Growth-Promoting Activity of Pseudomonas sp Isolated from Paddy Soil in Malaysia as Biocontrol Agent. J Plant Pathol Microb 3:120. doi:10.4172/2157-7471.1000120

Copyright: © 2012 Noori MSS. 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.



Pseudomonas fluorescens bacteria, a major constituent of Rhizobacteria, encourage the plant growth through their diverse mechanisms. In this investigation, 20 strains of Pseudomonads isolated from the rhizosphere soils of paddy areas in Malaysia and were screened for their plant growth promoting activity. All the 20 tested isolates of Pseudomonads were positive for the production of siderophores and HCN, while of the 20 antagonist bacteria strains, 15 strains (75%) showed positive for the production of plant growth-promoting hormone, IAA. Among the 20 isolates, 18 isolates (90%) produced phosphate solubilisation on NBRIP medium. All the twenty bacterial isolates (except DL21) inhibited the pathogen in the dual culture assay. Following API 20NE biochemical identification kit, of the 20 isolates, 15 strains were identified as Pseudomonas fluorescens, 3 isolates belong to the species of P.luteola, one isolates to the P.aeruginosa and a single isolate (TS14) showed a doubtful identification.


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