Puccinia longirostroides
| Puccinia longirostroides | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia longirostroides | ||||||||||||
| Jørstad |
Puccinia longirostroides is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Stipa mongholica . 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 longirostroides 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 longirostroides 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 that grow on the upper side of the leaves are black-brown, powdery, uncovered early and up to 5 mm long. The golden to light chestnut brown teliospores are two-celled, usually spindle-shaped, lobed or fingered at the tip and 60–110 × 16–24 µm in size. Their stem is colorless and up to 150 µm long.
distribution
The known distribution area of Puccinia longirostroides only includes the Chinese Hebei .
ecology
The host plant of Puccinia longirostroides is Stipa mongholica . 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 .