Secretion of XET-active enzymes from haustoria of <i>C</i>. <i>reflexa</i>.

<p>The localization of secreted XTHs is shown by fluorescence indicating the site-specific incorporation of XyGO-SR into xyloglucan. (a) Position of non-induced (left) and far-red light-induced (right) <i>Cuscuta</i> shoots on the XET test paper. (b) Fluorescence image of the XET test paper in (a) after incubation with parasite shoots and de-staining of background. Arrows point to single haustoria.