Host Restriction and Transduction in Rhizobium meliloti.
A host restriction difference exists between Rhizobium meliloti Rm41 and SU47 exists as indicated by the reduce plating efficiency of transducing phage PhiM12h1. Restriction can be attenuated by incubating cells at 42 degrees C for 3 h; this procedure overcomes a block to transduction from SU47 to Rm41.
Williams
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Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.
Klein
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Signer
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