Home|Journals Follow on Twitter| Subscribe to List

Directory for Medical Articles
 

Open Access

Original Research

Egypt. J. Exp. Biol. (Bot.). 2011; 7(1): 49-57


INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat.

Abstract
Two strains of growth promoting rhizobacteria (PGPR), Pseudomonas putida MG4, and Pseudomonas fluorescens MG18 selected as inducers of systemic resistance, were tested for biological control of leaf spot caused by Alternaria solani and bacterial speck caused by Pseudomonas syringae in tomato. The two bacterial isolates afforded reduced disease intensity and elicited systemic protection against the two studied pathogens. The two PGPR stimulated a systemic response in tomato by inducing high rates of enzyme activity of phenylalanine ammonialyase (PAL), peroxidase (PO), polyphenol oxidase (PPO) and chitinase as well as the accumulation of high level of phenolics. The combined effect of these factors induced drastic decrease in the degree of infection of the two pathogens.

Key words: Tomato, systemic resistance, PAL, PO, PPO, Chitinase, phenolic compounds, biological control



Share this Article


Advertisement
Oxidants and Antioxidants in Medical Science

SUBMIT YOUR ARTICLE NOW


ScopeMed.com
BiblioMed Home
Follow ScopeMed on Twitter
Author Tools
eJPort Journal Hosting
About BiblioMed
License Information
Terms & Conditions
Privacy Policy
Contact Us

The articles in Bibliomed are open access articles licensed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
ScopeMed is a Database Service for Scientific Publications. Copyright ScopeMed Information Services.