Pythiaceae

Pythiaceae
	Egg fungi - Phytophthora forms ; A: Sporangium . B: zoospore . C: chlamydospore . D: Oospore
Systematics
	Diaphoreticks
	Sar
	Stramenopiles (stramenopiles)
	Egg fungi (Peronosporomycetes)
Order :	Peronosporales
Family :	Pythiaceae
Scientific name
	Pythiaceae
	J. Schröt. , 1893

The Pythiaceae are a family of egg mushrooms . This family includes: a. the species of the genus Pythium which cause serious diseases in plants and animals . The family was described by the German mycologist Joseph Schröter in 1893 .

Systematics

The following genera are described:

Aquaperonospora WHKo, 2010 - 1 item

Cystosiphon Roze & Cornu - 5 species

Diasporangium Höhnk - 1 item

Elongisporangium Uzuhashi, Tojo & Kakish. - 5 types

Globisporangium Uzuhashi, Tojo & Kakish. - 67 species

Lagenidium Schenk - 19 species

Lucidium Lohde - 1 item
Myzocytium Schenk - 8 species
Nozemia - 1 Art
Ovipoculum ZLYang & R.Kirschner, 2010 - 1 item
Paralagenidium - 1 type
Peronophythora CCChen ex WHKo, HSChang, HJSu, CCChen & LSLeu
Phytopythium Abad, de Cock, Bala, Robideau & Levesque, 2010 - 20 species
Pilasporangium - 1 type
Pythium Pringsh. - 184 species; Type genus
Salilagenidium MWDick - 5 species
Trachysphaera Tabor & Bunting - 1 item

Life cycle

The representatives of the family live on land ( terrestrial ) or in water ( aquatic ) or in both habitat types ( amphibious ). Among the species that live on land, there are parasites that can cause deadly diseases in plants and animals.

The diploid stage dominates the life cycle. After a brief haplophase initiated by sexual and asexual reproduction ( homothallism dominates within the family), the gametes fuse and the diploid phase continues.

The sporangia can grow out through a germ tube or release mobile zoospores . This varies from species to species, but it also depends on the environmental conditions.

Economical meaning

Some Pythium species cause seedling, root, stem and cob rot in young plants (seedlings). In the case of crops, damage is to be expected.

Individual evidence

↑ Pythiaceae - Published in: in Engler & Prantl, Nat. Plant family (Leipzig), part. I 1: 104 (1893) . In: GBIF Backbone Taxonomy . Global Biodiversity Information Facility . Retrieved July 10, 2019.

Other sources

Constantine J. Alexopolous, Charles W. Mims, M. Blackwell: Introductory Mycology , 4th Edition, John Wiley and Sons, Hoboken NJ 1996, ISBN 0-471-52229-5 .

[1] Pythiaceae - Published in: in Engler & Prantl, Nat. Plant family (Leipzig), part. I 1: 104 (1893) . In: GBIF Backbone Taxonomy . Global Biodiversity Information Facility . Retrieved July 10, 2019.