These bacteria cause small, moist, dark lesions, appearing from various wounds and scars and spreading rapidly above and below the surface . Eventually, milky bacterial exudates can be observed at the points of epidermal rupture (Figure 1). Tissues liquefy quickly, and gas bubbles are sometimes seen. These symptoms can occur both during cultivation and after harvest, during storage. Note that they can also over-contaminate lesions caused by other pathogenic microorganisms.

* Some of them are relatively confidential and do not pose a significant threat to tomato production. This is particularly true of certain pectinolytic strain Pseudomonas fluorescens causing rot less rapidly changing as the Pectobacterium ( Erwinia spp.) It is the same for a few Bacillus , the bacteria "lactic" Gram, and Leuconostoc mesenteroides subsp. mesenteroides , occasionally causing some damage.