Puccinia ammophilae
| Puccinia ammophilae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Puccinia ammophilae | ||||||||||||
| Guyot |
Puccinia ammophilae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Ammophila arenaria . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in Europe .
features
Macroscopic features
Puccinia ammophilae 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 Puccinia ammophilae grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Aecia or spermogonia of the species are not known. The cinnamon-brown uredia of the fungus grow on the top of the host leaves. Its light yellow to golden uredospores are 28–34 × 20–25 µm in size, mostly broadly ellipsoidal to ovoid and finely spiky. The bilateral growing parts of the species are black-brown and long covered. The light hazelnut-brown teliospores are two-celled, usually oblong to long and narrowly club-shaped and 38–60 × 15–19 µm in size. Their surface is finely prickly. Their stalk is brown and up to 12 µm long.
distribution
The known distribution area of Puccinia ammophilae covers large parts of Europe .
ecology
The host plant of Puccinia ammophilae is Ammophila arenaria . 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 has a development cycle of which only Telien and Uredien and their host are known; Spermogonia and aecia could not be assigned to the fungus.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .