Scanning electron microscopy investigations on the relationships between bacteria and plant tissues. II. Investigations on the initial processes of Pseudomonas solanacearum pathogenesis.
In xylem vessels of tomato seedlings 2 modes of growth were seen: the pathogen adhered to the vessel walls or completely invaded the lumen. In tobacco leaves, P. solanacearum tended to adhere polarly to the cell surfaces and subsequently to become localized at preferential sites in the mesophyll. In both cases, the coating of the bacterial cells was of particular interest.