Mutation of Lon protease differentially affects the expression of Pseudomonas syringae type III secretion system genes in rich and minimal media and reduces pathogenicity.

Abstract excerpt

The bacterial Lon protease participates in a variety of biological processes. In Pseudomonas syringae, mutation of lon is known to activate hrpL and a few hrpL-regulated genes in rich medium. The elevated expression of hrpL and hrpL-regulated genes results from increased stability of HrpR, the transcriptional activator of hrpL, in the lon mutant. Here, we conducted a microarray analysis to identify genes that are...

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