Puccinia diplachnicola
| Puccinia diplachnicola | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia diplachnicola | ||||||||||||
| Dietel |
Puccinia diplachnicola is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite belonging to the sweet grass genus Cleistogenes . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in East Asia .
features
Macroscopic features
Puccinia diplachnicola 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 diplachnicola 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 pale yellow uredia of the fungus mostly grow on the underside of the host leaves. Their hyaline uredospores are 15–18 × 12–14 µm in size, spherical to ovoid and finely spiky. The parts of the species that grow on both or mainly underside of the leaf are black-brown, powdery and exposed early. The hazel-brown teliospores are two-celled, ellipsoidal to broadly ellipsoidal and 27–38 × 14–19 µm in size. Their stem is colorless and up to 90 µm long.
distribution
The known distribution area of Puccinia diplachnicola includes China , Japan and the Korean Peninsula .
ecology
The host plants of Puccinia diplachnicola are different Cleistogenes species. 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.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .