Proposed model for regulation of mangotoxin biosynthesis inP. syringaepv. syringae. In this model, GacS/GacA two-component regulatory system activates directly or indirectly the transcription of the mgo operon. And the mgo operon could synthetize a positive regulator of the mbo operon transcription. The mbo operon produces mangotoxin which acts as virulence factor.
Carrión et al. BMC Microbiology 2014 14:46 doi:10.1186/1471-2180-14-46