Pythium debaryanum

{{Short description|Species of single-celled organism}}

{{One source|date=May 2022}}

{{Speciesbox

|image=Parasitism of pythium debaryanum hesse on the potato tuber 412.jpg

|image_alt=Photographs enlarged from portions of a motion photomicrograph, showing the method of cell wall penetration by Pythium hyphae.

|image_caption=Photographs enlarged from portions of a motion photomicrograph, showing the method of cell wall penetration by Pythium hyphae.

A. — Shows hypha growing toward the potato cell wall.

B. — Shows hypha attached to wall and about to penetrate.

C. — The tip has just broken through the wall.

D. — The penetration is complete. Note the black line at the point where the hypha penetrates the wall. This may be due to a rolling up of the potato cell wall about the hypha or to a difference in refraction caused by compression of the wall.

|genus=Pythium

| species = debaryanum

| authority = R. Hesse (1874)

| synonyms =

Eupythium debaryanum (R. Hesse) Nieuwl., (1916)

}}

Pythium debaryanum is a species of water mould in the family Pythiaceae. It is known as a plant pathogen on many kinds of wild and cultivated plants, including peanut, beet, eucalyptus, tobacco, and pine trees. The plants develop damping off, a disease state.[http://www.plantwise.org/KnowledgeBank/Datasheet.aspx?dsid=46146 Pythium debaryanum.] Plantwise.