Puccinia achnatheri-sibirici
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| Puccinia achnatheri-sibirici | ||||||||||||
| Wang |
Puccinia achnatheri-sibirici is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Stipa sibirica . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in China .
features
Macroscopic features
Puccinia achnatheri-sibirici can only be recognized with the naked eye from 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 achnatheri-sibirici 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 parts of the species growing on both sides of the leaves, mostly underneath the leaves and on cladding tubes, are blackish, powdery and covered for a certain time. The yellow-brown teliospores are two-celled, elongated to long club-shaped and 35–58 × 15–20 µm in size. Their stem is brownish and short.
distribution
The known distribution area of Puccinia achnatheri-sibirici includes the Chinese provinces of Heilongjiang and Henan .
ecology
The host plant of Puccinia achnatheri-sibirici is Stipa sibirica . 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 .