FIG. 3.

TH activity in extracts of different R. solanacearum strains, determined at different SDS concentrations. •, R3; ▴ and ▵, R3-337⁻; ▪, R3-1501⁻; ⧫, R3-1530⁻. The solid symbols indicate activities measured at pH 5; the open symbols indicate activities measured at pH 7.