Puccinia triseticola
| Puccinia triseticola | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia triseticola | ||||||||||||
| Tranzschel |
Puccinia triseticola is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the golden oat Trisetum sibiricum . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It isnative tothe Far East .
features
Macroscopic features
Puccinia triseticola 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 triseticola 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 yellowish uredia of the species usually grow on the topside of the leaves of the host plant. Their yellow uredospores are approximately spherical to ellipsoidal, 19–22 × 16–17.5 µm in size and finely spiky. The mostly underside of the leaf growing parts are black-brown, uncovered early and compact. The teliospores are two-celled, usually club-shaped to sub-cylindrical and 35–48.5 × 13.5–18 µm in size; her stem short.
distribution
The known distribution area of Puccinia triseticola includes the Far Eastern Russia .
ecology
The host plant of Puccinia triseticola is the golden oat Trisetum sibiricum . 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 Uredien and their host are known; Spermogonia and aecia could not be assigned to the fungus. Culture experiments indicate that the Christopher herbs Actaea pachypoda (formerly A. alba ) and A. dahurica could be the haplont hosts of the species.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .