Puccinia danthoniae
| Puccinia danthoniae | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia danthoniae | ||||||||||||
| Korbonskaya |
Puccinia danthoniae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Danthonia forsskalii . 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 danthoniae 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 danthoniae 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 fungus. Their uredospores are 26–28 × 26–28 µm in size, spherical and finely warty. The leaves of the species growing underneath the leaves are black-brown, compact and exposed early. They grow in groups or rows. The teliospores are two-celled, club-shaped to broadly ellipsoid and 37–53 × 18–32 µm in size. Their stem is up to 155 µm long.
distribution
The known distribution area of Puccinia danthoniae only includes Tajikistan .
ecology
The host plant of Puccinia danthoniae is Danthonia forsskalii . 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 et al. 1971, ISBN 3-540-05336-0 .