Role of some soil bacteria and acyionomycetes in controlling cucumber root-rot disease
Egyptian Journal of Microbiology. 2003; 38 (3): 217-28
in English
| IMEMR
| ID: emr-61893
ABSTRACT
Twenty five isolates of N2-fixing bacteria and eleven actinomycetes were chosen from 117 microorganisms isolated from desert soils and different plant roots to study their effect on Rhizoctonia solani, the causative of the root-rot disease. The data revealed that Azotobacter Rf and Azospirillium Kc were the most active for nitrogen fixation [210 and 133 ppm], root colonization [61.3% and 65%] and antagonistic effect on the pathogenic fungus R. solani [15 and 17 mm]. The two strains were identified as Azotobacter chroococcum and Azospirillium lipoferum. The actinomycetes isolate, Streptomyces Ncu was the most active strain for root colonization ability [41.4%] and antagonistic effect against R. solani [22 mm]. This strain was completely identified as Streptomyces lydicus
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Plant Diseases
/
Rhizoctonia
/
Soil Microbiology
/
Streptomyces
/
Actinomycetales
/
Microscopy, Electron
/
Azospirillum
/
Nitrogen Fixation
Language:
English
Journal:
Egypt. J. Microbiol.
Year:
2003
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