Characteristics of aSerratia plymuthica isolate from plant rhizospheres |
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| Authors: | Sadhna Alström Berndt Gerhardson |
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| Institution: | (1) Department of Plant and Forest Protection, Swedish University of Agricultural Sciences, Box 7044, S-750 07 Uppsala, Sweden |
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| Abstract: | An isolate (G15) of a bacterium, frequently isolated from roots of various plant species, was identified asSerratia plymuthica. At low temperature (viz. 2–8°C), the studied isolated readily produced a red pigment which proved useful in recognizing the bacteria on reisolation.
In laboratory tests it exhibited strong antagonism againstBotrytis cinerea andGerlachia nivalis and moderate antagonism againstRhizoctonia solani, Fusarium culmorum andPythium sp. The bacterium significantly increased growth of lettuce plants when applied to the roots under non-sterile conditions
in greenhouse tests. Various strains ofSerratia plymuthica are supposed to be common as rhizosphere bacteria under Swedish conditions. |
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| Keywords: | antagonism growth promotion lettuce plant-pathogenic fungi rhizosphere Serratia plymuthica |
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