Puccinia sinica
| Puccinia sinica | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Puccinia sinica | ||||||||||||
| Sydow |
Puccinia sinica is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Muhlenbergia longistolon . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to China .
features
Macroscopic features
Puccinia sinica 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 sinica 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 yellowish uredia of the fungus grow on the underside of the host leaves. Their hyaline to yellowish uredospores are 14–19 × 12–13 µm in size, spherical to ovoid and finely spiky. The parts of the species growing underneath the leaves are blackish, powdery and exposed early. The hazelnut-brown teliospores are two-celled, ovate to elongated and 26–38 × 12–17 µm in size. Its stem is colorless and 170 µm long.
distribution
The known distribution area of Puccinia sinica only includes China .
ecology
The host plant of Puccinia sinica is Muhlenbergia longistolon . 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 et al. 1971, ISBN 3-540-05336-0 .