Puccinia enneapogonis
| Puccinia enneapogonis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia enneapogonis | ||||||||||||
| Korbonskaya |
Puccinia enneapogonis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Enneapogon persicus . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Tajikistan .
features
Macroscopic features
Puccinia enneapogonis 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 enneapogonis 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 . Their uredospores are broadly ellipsoidal to ovate, 25–33 × 18–22 µm in size and finely spiky. The parts of the species growing on leaves and stems are black-brown and uncovered early. Their light brown teliospores are two- to four-celled, usually broadly ellipsoidal to club-shaped and 40–50 × 248 µm in size. Their stem is colorless and up to 100 µm long.
distribution
The known distribution area of Puccinia enneapogonis only includes Tajikistan .
ecology
The host plant of Puccinia enneapogonis is Enneapogon persicus . 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 .