These include Ralstonia solanacearum, Erwinia carotovora subsp. carotovora and E. carotovora subsp. atroseptica, Erwinia chrysanthemi, Phoma exigua var. foveata, as well as large populations of saprophytic bacteria.
Il s’agit entre autres de Ralstonia solanacearum, d’Erwinia carotovora ssp. carotovora et d’E. carotovora ssp. atroseptica, d’Erwinia chrysanthemi, de Phoma exigua var. foveata, ainsi que de vastes populations de bactéries saprophytes.