Bdellovibrio bacteriovorus Parasitizing Rhizobium in Western Australia |
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| Authors: | C A Parker Pamela L Grove |
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| Institution: | Department of Soil Science and Plant Nutrition, Institute of Agriculture, University of Western Australia, Nedlands, Western Australia |
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| Abstract: | S ummary . Bdellovibrio bacteriovorus strains which parasitize Rhizobium meliloti, R. trifolii, Agrobacterium tumefaciens and A. radiobacter have been found in Western Australian soils. Rhizobium lupini was not lysed by any strain. Some Bdellovibrio cells pass through 0·22 μm membrane filters, whilst the 0·45 μm filters allow several saprophytic soil bacteria to pass. The strength of the medium is shown to be of great importance for the detection or counting of Bdellovibrio cells. The Bdellovibrio strains are capable of destroying large numbers of rhizobia in the laboratory. |
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