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Plant Pathology Journal
  Year: 2015 | Volume: 14 | Issue: 3 | Page No.: 130-135
DOI: 10.3923/ppj.2015.130.135
Use of Chitosan to Control Crown Gall Disease
A.F. Abd El- Rahman, H. Abd El- Ghany, Z. Moussa and Hanan A. Shaheen

Abstract:
The antibacterial activity of chitosan solution against Agrobacterium tumifaciens was investigated in this study. The in vitro antibacterial effect of chitosan against A. tumifaciens was affected by chitosan concentrations, pH value, concentration of acetic acid used to dissolve chitosan and incubation time. Chitosan concentrations 2.5 mg mL–1 and 5 mg mL–1 exhibited strong antibacterial activity at the pH 6.6 and 5.6, respectively. The gall diameter and gall weight of tomato seedlings at dipping time 10 and 20 min was significantly reduced by chitosan concentrations 2.5 and 5 mg mL–1 at pH 6.6 and 5.6, respectively. The viable bacterial counts after 8 h of incubation in chitosan concentration 5 mg mL–1 at pH 5.6 was 0.0 log CFU mL–1.
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How to cite this article:

A.F. Abd El- Rahman, H. Abd El- Ghany, Z. Moussa and Hanan A. Shaheen, 2015. Use of Chitosan to Control Crown Gall Disease. Plant Pathology Journal, 14: 130-135.

DOI: 10.3923/ppj.2015.130.135

URL: https://scialert.net/abstract/?doi=ppj.2015.130.135

 
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