Sclerospora

Sclerospora is a genus of downy mildews belonging to the family Peronosporaceae. These organisms are chromists that act as parasites on various grasses. A key characteristic of Sclerospora is the presence of thick-walled resting spores, which are united with the walls of the oogonia. This genus is related to sclerotium, which is a persistent, vegetative resting spore found in certain fungi and can vary in size. Some plant diseases are caused by fungi of the genus Sclerotium, or by diseases in which sclerotia are formed. Other related organisms, like those in the phylum Plasmodiophoromycota, are endoparasitic slime molds that can be significant plant pathogens.1234