Fig. 4From: Role of the type VI secretion systems during disease interactions of Erwinia amylovora with its plant hostInfluence of the T6SS mutations on cell motility. The wild-type and T6SS mutants were spotted on a motility agar and the diameters of the bacterial movement halos were assessed after 2Â days post inoculation. (1) WT, (2) T6-d1, (3) T6-d3, (4) T6-d1d3Back to article page