Uredo glyceriae
| Uredo glyceriae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Uredo glyceriae | ||||||||||||
| Lind |
Uredo glyceriae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Glyceria maritima . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in Northern Europe. Since only its secondary crop shape is knownso far, it is classified in the genus Uredo .
features
Macroscopic features
Uredo glyceriae can only be recognized with the naked eye by means of the spore beds protruding on the surface of the host. They grow in nests that appear as yellowish to brown spots and pustules on the leaf surfaces.
Microscopic features
The mycelium of Uredo glyceriae grows as with all Uredo TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The spermogonia and aecia of the species are not known. The uredia of the fungus growing on the upper side of the host leaves are golden yellow and uncovered early on, they have paraphyses . Their hyaline to yellowish uredospores are on average 21–30 × 18–22 µm in size, mostly approximately spherical to broadly ellipsoidal and smooth. The parts of the species are unknown.
distribution
The known distribution area of Uredo glyceriae includes Northern Europe .
ecology
The host plant of Uredo glyceriae is Glyceria maritima . The fungus feeds on the nutrients present in the storage tissue of the plants, its spore beds later break through the leaf surface and release spores. The species goes through a presumably macrocyclical development cycle with Spermogonia, Aecien, Uredien and Telien. Due to the lack of aecia and spermogonia, it is not possible to determine whether it changes host .
literature
- Ernst Gäumann: The rust fungi of Central Europe. With special consideration of Switzerland . In: Contributions to the cryptogam flora in Switzerland . tape 12 . Commission publisher Buchdruckerei Büchler & Co, Bern 1959.