Puccinia miscanthicola
| Puccinia miscanthicola | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia miscanthicola | ||||||||||||
| Tai & Cheo |
Puccinia miscanthicola is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Miscanthus sacchariflorus . 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 miscanthicola 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 miscanthicola 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 uredia of the fungus or its uredospores. The round to elongated, mostly underside growing parts of the species are black-brown, powdery and up to 1 mm long. The chestnut-brown teliospores are two- to four-celled, approximately spindle-shaped to long ellipsoid and 32–55 × 15–24 µm in size. Their stalk is yellowish and up to 190 µm long.
distribution
The known distribution area of Puccinia miscanthicola only includes the Chinese Shaanxi .
ecology
The host plant of Puccinia miscanthicola is Miscanthus sacchariflorus . 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 .