Fig. 5

Identification and characterization of the metabolite with antagonistic activity against Xoo in the ethyl acetate extracts of the NB culture of HSW2009. a HPLC analysis of the active fractions derived from the preparative HPLC analysis of the crude ethyl acetate extract. b Relative antagonistic activities of the separated fractions. c Relative antagonistic activities of the 10- and 100-fold diluted fractions. d HPLC analysis of the compound in fractions 16 and 17. e MS analysis of the purified compound in fractions 16 and 17. mAU, milli absorbance unit; CE, crude extracts; ME, methanol