Análise ultraestrutural da intera？？o de Curtobacterium flaccumfaciens pv. flaccumfaciens em genótipos de feijoeiro

transmission electron microscopy for observations of stem cells of bean (phaseolus vulgaris l.), inoculated with curtobacterium flaccumfaciens pv. flaccumfaciens (cff) showed some alterations in the xylen vessels of highly resistant genotypes with formation of estruture like tyloses and occurrence of fibrillas envolving the bacterial cells. in susceptible genotypes, cff colonized xylem vessels as well as vascular parenchyma cells and metaxylem vessels.