Related Experiment Videos
A single promoter sequence recognized by a newly identified alternate sigma factor directs expression of
1Department of Botany, University of Maryland, College Park 20742.
Journal of Bacteriology
|May 1, 1994
Abstract:
A conserved sequence motif associated with transcription of avr genes was identified in the promoter regions of six Pseudomonas syringae pv. syringae Pss61 hrp operons. A 34-bp fragment carrying this motif was cloned from the HrpZ promoter region and was shown to confer HrpL-dependent promoter activity. Expression of pathogenicity and host range determinants in P. syringae strains is thus directed by the apparent alternate sigma factor HrpL.