The Stimulation of Indigenous Bacterial Antagonists by γ-Glutamyl- S -Allyl- l -Cysteine Increases Soil Suppressiveness to Fusarium Wilt

-allyl-l-cysteine, a unique dipeptide synthesized by Welsh onion, to soil enhances Fusarium wilt suppressiveness by increasing the relative abundance of indigenous antagonistic bacteria irrespective of the soil type. This finding will facilitate research supporting the development of environmentally friendly control measures for soilborne diseases.