The biological control of soft rot disease in melon caused by Erwinia carotovora subsp. carotovora using Pseudomonas fluorescens

The effect of Pseudomonas fluorescens on soft-rot formation in melon seedlings infected with a virulent strain of E.carotovora subsp. carotovora was evaluated. Pseudomonas fluorescens strain 346683 exhibited in vitro antibiosis towards E.carotovora subsp. carotovora strain 119a.Pretreatment of the c...

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Bibliographic Details
Published in:Microbiological research 1998-04, Vol.153 (1), p.55-60
Main Authors: El-Hendawy, Hoda H., Zeid, Ibrahim M., Mohamed, Zeinat K.
Format: Article
Language:English
Subjects:
Bacterial plant pathogens
Biological and medical sciences
biological control
Cucumis melo
Erwinia carotovora
Erwinia carotovora carotovora
Fundamental and applied biological sciences. Psychology
Generalities. Techniques. Transmission, epidemiology, ecology. Antibacterial substances, control
melon
Phytopathology. Animal pests. Plant and forest protection
Pseudomonas fluorescens
soft rot disease
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Summary:The effect of Pseudomonas fluorescens on soft-rot formation in melon seedlings infected with a virulent strain of E.carotovora subsp. carotovora was evaluated. Pseudomonas fluorescens strain 346683 exhibited in vitro antibiosis towards E.carotovora subsp. carotovora strain 119a.Pretreatment of the cotyledons with viable cells of P.fluorescens has been shown to reduce the infection up to 50% and was able to reduce the deleterious effect of E.carotovora subsp. carotovora on fresh and dry weight of melon seedlings.Also, pretreatment with P.fluorescens caused significant increases in total carbohydrates and total nitrogen.Levels of protein had increased in protected seedlings. These results suggest beneficial effects of pretreatment with P.fluorescens in addition to the control of soft rot disease.
ISSN:0944-5013
1618-0623
DOI:10.1016/S0944-5013(98)80021-9