Few microorganisms match the impact that the oomycetes have had on mankind. This distinct lineage of eukaryotes is wellknown for its most notorious member, Phytophthora infestans, the agent of the nineteenth century Irish potato famine, and several other devastating pathogens of cultivated and wild plants [1]. Indeed, more than 60% of oomycete species infect plants [2]. Less known is the fact t...

Some oomycetes species are severe pathogens of fish or crops. As such, they are responsible for important losses in the aquaculture industry as well as in agriculture. Saprolegnia parasitica is a major concern in aquaculture as there is currently no method available for controlling the diseases caused by this microorganism. The cell wall is an extracellular matrix composed essentially of polysa...

Oomycetes have long been considered as a separate class within the kingdom Fungi, but they are in fact closer to brown algae. They are currently classified in the Stramenopile eukaryotic kingdom, which includes heterokont algae and water molds. The major cell wall polysaccharides in Oomycetes are β-(1 3) and β-(1 6)-glucans, as well as cellulose, which has never been reported in any fungal spec...

This study will look for the fungus Saprolegnia parasitica from fish in several lakes Wasit Province that are associated with farming (carp). Sixty samples were collected organs, including gills, skin, and eyes. Which bears following signs (skin blisters, gills have turned dark gray necrosis, a blow to eyes led) during period (October 2021- December 2021). It might take lot of time effort isola...