GacA, the response regulator of a two-component system, acts as a master regulator in Pseudomonas syringae pv. tomato DC3000 by controlling regulatory RNA, transcriptional activators, and alternate sigma factors
Molecular Plant-Microbe Interactions (2003) - Comment
pubmed: 14651344  doi: 10.1094/mpmi.2003.16.12.1106  issn: 0894-0282  issn: 1943-7706 

Asita Chatterjee, Yaya Cui, Hailian Yang, Alan Collmer, James R. Alfano, Arun K. Chatterjee