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Usage of actinobacteria to control bacterial soft rot disease of potato [electronic resource].

By:

Gomah, A.A

Contributor(s):

Mahmoud, S.M

Language: English Summary language: Arabic Description: p.233-239Other title:

استخدام الأكتينوبكتيريا لمكافحة مرض العفن الطري البكتيري في البطاطس [Added title page title]

Uniform titles:

Annals of agricultural science, 2007 v. 52 (1) [electronic resource].

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In: Annals of Agricultural Science 2007.v.52(1)Summary: Bacterial soft rot disease caused by Erwinia carotovora subsp carotovora is a major limiting factor during production and exportation. It causes postharvest decay in many crops, since it causes very heavy losses in the field and stores. In present work, five potato cultivars named Daimant, Desiree, Nicola, Sponta and Valor were screened and evidence for their susceptibility to the disease. As will as preplant treatment of seed tubers with potent antagonistic rhizospheric isolates of actinobacteria belonging to streptomyces aiboniger, S. albus, S. antibioticus, S. flavidovirens and S. levendulae were evaluated for their effect on the disease. In vitro results, only five isolates from them were antagonistic to the pathogen. Results indicated that, when antagonistic isolates were used as tubers treatment, Streptromyces al-boniger was the most effective in reducing soft rot severity followed by S. levendulae, S antibioticus, S flavidovirens and S. albus, respectively.

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Bacterial soft rot disease caused by Erwinia carotovora subsp carotovora is a major limiting factor during production and exportation. It causes postharvest decay in many crops, since it causes very heavy losses in the field and stores. In present work, five potato cultivars named Daimant, Desiree, Nicola, Sponta and Valor were screened and evidence for their susceptibility to the disease. As will as preplant treatment of seed tubers with potent antagonistic rhizospheric isolates of actinobacteria belonging to streptomyces aiboniger, S. albus, S. antibioticus, S. flavidovirens and S. levendulae were evaluated for their effect on the disease. In vitro results, only five isolates from them were antagonistic to the pathogen. Results indicated that, when antagonistic isolates were used as tubers treatment, Streptromyces al-boniger was the most effective in reducing soft rot severity followed by S. levendulae, S antibioticus, S flavidovirens and S. albus, respectively.

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