E-ISSN 2090-0503 | ISSN 1687-7497
 
2023, Vol: 19, Issue: 2
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Original Research 


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


 
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Pubmed Style

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat. INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES. Egypt. J. Exp. Biol. (Bot.). 2011; 7(1): 49-57.

Web Style

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat. INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES. https://www.egyseb.net//?mno=186928 [Access: December 05, 2023].

AMA (American Medical Association) Style

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat. INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES. Egypt. J. Exp. Biol. (Bot.). 2011; 7(1): 49-57.


Vancouver/ICMJE Style

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat. INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES. Egypt. J. Exp. Biol. (Bot.). (2011), [cited December 05, 2023]; 7(1): 49-57.


Harvard Style

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat (2011) INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES. Egypt. J. Exp. Biol. (Bot.), 7 (1), 49-57.


Turabian Style

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat. 2011. INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 7 (1), 49-57.


Chicago Style

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat. "INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 7 (2011), 49-57.


MLA (The Modern Language Association) Style

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat. "INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 7.1 (2011), 49-57. Print.


APA (American Psychological Association) Style

Hanaa E. Ahmed Zienat K. Mohamed Mohamed E. ElDean Mohamed G. Farahat (2011) INDUCED SYSTEMIC PROTECTION AGAINST TOMATO LEAF SPOT (EARLY LEAF BLIGHT) AND BACTERIAL SPECK BY RHIZOBACTERIAL ISOLATES. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 7 (1), 49-57.


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