Abstract: With the completion of full genomic sequences of many bacterial phytopathogens, the development of microarray profiling technology provides new insights into the study of pathogen-host interactions. Using DNA microarray technology to detect the transcriptional profiles of bacterial pathogens under different conditions (especially during in vivo infection) could identify pathogenicity-related genes and their regulatory networks. These would gain helpful information to understand the gene function and pathogenic mechanisms of pathogens. Microarrays therefore provide new ideas for the prevention of plant pathogenic bacteria. Here we will review the latest application of DNA microarray technology in the transcriptional profile study of plant pathogenic bacteria.

Key words: DNA microarray, plant pathogenic bacteria, gene expression profiling, pathogen-host interactions, pathogenic mechanisms