Puccinia morigera
| Puccinia morigera | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia morigera | ||||||||||||
| Cummins |
Puccinia mori screened is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of an unspecified Eragrostis - sweet grass . 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 morigera 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 mori screened 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 underside of the host leaves. Their golden to light cinnamon brown uredospores are 19–26 × 18–23 µm in size, mostly spherical to broadly ellipsoidal and warty. The parts of the species growing underneath the leaves are black-brown, powdery and exposed early. The chestnut-brown teliospores are two-celled, usually club-shaped to broadly ellipsoidal and 30–46 × 21–24 µm in size. Their stalk is brownish and up to 90 µm long.
distribution
The known distribution area of Puccinia morigera only includes the Chinese Guizhou .
ecology
The host plant of Puccinia morigera is an indeterminate Eragrostis species. 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 their host are known; Uredien, Spermogonia and Aecien 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 .