Puccinia tepperi
| Puccinia tepperi | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia tepperi | ||||||||||||
| Ludwig |
Puccinia tepperi is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Phragmites communis . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Australia .
features
Macroscopic features
Puccinia tepperi 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 tepperi 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 same applies to the uredia of the mushroom. Their dark cinnamon - brown uredospores are pear-shaped to elliptical, 27–30 × 20–23 µm in size and finely spiky. The parts of the species are chocolate brown, exposed early and compact. The golden to hazel-brown teliospores are two-celled, usually ellipsoid to club-shaped ellipsoid and 47–64 × 20–23 µm in size; their stalk is brownish and up to 180 µm long.
distribution
The known distribution area of Puccinia tepperi only includes Australia .
ecology
The host plant of Puccinia tepperi is Phragmites communis . 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 B. Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .