[A LuxR family regulator, ExpR regulates the expression of motC operon from Sinorhizobium meliloti].

Abstract excerpt

In Sinorhizobium meliloti strain Rm1021, ExpR+ mutation results in the overproduction of EPS II, which is required for efficient invasion of root nodules on the host plant alfalfa. When rhizobia were grown in LB/MC medium for 36-hour then placed at room temperature, most of ExpR+ mutant (Rm8530) cells aggregated at the bottom of the tubes, but ExpR+ sinR double mutant Rm11528 and wild type Rm1021 did not. The...

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