Puccinia saltensis
| Puccinia saltensis | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Puccinia saltensis | ||||||||||||
| Cummins |
Puccinia saltensis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of awl grasses ( Stipa spp.) And Nassella species. 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 saltensis can only be recognized with the naked eye by means of the spore beds emerging 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 saltensis 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 uredia are small and cinnamon brown and grow on the top of the leaves. Their dark cinnamon - brown uredospores are ellipsoidal to broadly ellipsoidal, 18-25 × 16-20 µm in size and finely spiky. The upper-side growing parts are black-brown, uncovered early and compact. The hazelnut-brown teliospores are two-celled, usually club-ellipsoidal to long-ellipsoidal and 33–45 × 16–19 µm in size; their stem is yellow to golden and up to 55 µm long.
distribution
The known distribution area of Puccinia saltensis includes South America from Argentina to Ecuador .
ecology
The host plants of Puccinia saltensis are various awl grasses ( Stipa spp.) And Nassella 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 .