sentences:  The oospore can overwinter in the soil, and in the spring it produces zoospores which will encyst on the surface of spinach leaves in the presence of water and germinate.Asexual propagation of "Albugo occidentalis" occurs via the production of sporangia on sporangiophores.These sporangia disperse and form zoospores, which complete the asexual cycle by re-infecting or infecting a new spinach leaf.