An Apoplastic Defensin of Wheat Elicits the Production of Extracellular Polysaccharides in Snow Mold.

TAD1 ( defensin 1) is a plant defensin specifically induced by low temperature in winter wheat. In this study, we demonstrated that TAD1 accumulated in the apoplast during cold acclimation and displayed antifungal activity against the pink snow mold fungi . When was treated with TAD1, Congo red-stainable extracellular polysaccharides (EPS) were produced.