Ascocarp Dehiscence and Ascospore Discharge in<i>Uncinula necator</i>

Abstract

In this study, we describe some of the anatomical, cytological, and physiological changes that precede deshiscence of cleistothecia of U.n., we report on cytoplasmic water potential and strength of the ascocarp wall during overwintering, and report the effects of temperature and wetting upon the mechanism of ascocarp dehiscence and ascospore discharge under controlled conditions and in vineyards