Ethyl β-d-glucoside: a novel chemoattractant of <i>Ralstonia solanacearum</i> isolated from tomato root exudates by a bioassay-guided fractionation

<p>A chemoattractant of <i>Ralstonia solanacearum</i> isolated from the activated charcoal-adsorbed fraction of tomato root exudates was identified as ethyl β-d-glucopyranoside by instrumental analyses and comparison with synthetic preparations. Ethyl β-D-glucopyranoside showed unambiguous activity at above 1 µmol/disc. Its stereoisomers and D-glucose were inactive.</p> <p>Structure of chemoattractant for Ralstonia solanacearum isolated from tomato root exudates with the guidance of bioassay was identified as ethyl β-D-glucopyranoside.</p>