Root surface-inhabiting bacteria and the expression of clubroot of radish in controlled environments

The effect of bacteria on the expression of clubroot of radish caused by the obligate parasite, Plasmodiophora brassicae, was studied. Inoculations with the bacterial strains isolated from roots of radish plants increased slightly, decreased slightly or did not change the number of root hairs coloni...

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Bibliographic Details
Published in:Soil biology & biochemistry 1984, Vol.16 (3), p.265-267
Main Authors: Kroll, T.K., Lacy, G.H., Moore, L.D.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Fungal plant pathogens
Pathology, epidemiology, host-fungus relationships. Damages, economic importance
Phytopathology. Animal pests. Plant and forest protection
Plasmodiophora brassicae
Raphanus sativus
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Summary:The effect of bacteria on the expression of clubroot of radish caused by the obligate parasite, Plasmodiophora brassicae, was studied. Inoculations with the bacterial strains isolated from roots of radish plants increased slightly, decreased slightly or did not change the number of root hairs colonized by P. brassicae in the root hair, i.e. primary phase of colonization. Five of six bacterial strains decreased the incidence of clubroot which was associated with a decrease in the extent of P. brassicae -colonization of the stele, i.e. secondary phase colonization. The role of root surface-inhabiting bacteria in clubroot disease development in radish under controlled environmental conditions is discussed.
ISSN:0038-0717
1879-3428
DOI:10.1016/0038-0717(84)90012-9